@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  color-scheme: light;

  /* Palette: Sophisticated neutral with blue-steel accent */
  --bg: #f8f9fb;
  --bg-subtle: #f1f3f6;
  --bg-elevated: #ffffff;

  --ink: #111827;
  --ink-secondary: #374151;
  --ink-tertiary: #4b5563;
  --muted: #6b7280;
  --faint: #9ca3af;

  --border: #e5e7eb;
  --border-subtle: #f0f1f3;
  --border-hover: #d1d5db;
  --border-active: #9ca3af;

  /* Accent: Deep indigo-slate for enterprise feel */
  --accent: #1e293b;
  --accent-hover: #334155;
  --accent-soft: #f1f5f9;
  --accent-fg: #ffffff;

  /* Brand accent for highlights */
  --brand: #3b82f6;
  --brand-hover: #2563eb;
  --brand-soft: #eff6ff;
  --brand-muted: #93c5fd;

  --panel: #ffffff;
  --panel-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --panel-shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
  --panel-shadow-xl: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);

  /* Semantic Colors - muted, professional */
  --success: #059669;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;

  --warning: #d97706;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;

  --error: #dc2626;
  --error-bg: #fef2f2;
  --error-border: #fecaca;

  --focus-ring: 0 0 0 3px rgba(59, 130, 246, 0.15);

  /* Radius */
  --radius-sm: 4px;
  --radius: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition: 200ms ease;
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  overflow: auto;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

/* ─── Sidebar ─────────────────────────────────────────── */
.sidebar {
  width: 78px;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 0 22px;
  gap: 22px;
  z-index: 100;
  position: relative;
}

.sidebar::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(0, 0, 0, 0.08);
}

.sidebar__header {
  width: 100%;
  display: flex;
  justify-content: center;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar__logo {
  width: 42px;
  height: 42px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(59, 130, 246, 0.18));
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 0 12px;
}

.sidebar__tab {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 0;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
}

.sidebar__tab:hover {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.8);
}

.sidebar__tab--active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.sidebar__tab--active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  background: var(--brand);
  border-radius: 0 3px 3px 0;
}

.sidebar__icon {
  width: 22px;
  height: 22px;
  opacity: 0.9;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  line-height: 1;
}

.sidebar__label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── Subtle Backdrop ─────────────────────────────────── */
.backdrop {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: -2;
}

/* ─── App Layout ──────────────────────────────────────── */
.app-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow: auto;
}

/* ─── Header ──────────────────────────────────────────── */
.warehouse-analyzer {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  z-index: 10;
}

.analyzer__content {
  flex: 1;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.analyzer__title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.analyzer__subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--faint);
  font-weight: 400;
}

.analyzer__actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

/* ─── Main Content Split ──────────────────────────────── */
.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 480px 1fr;
  gap: 0;
  overflow: auto;
}

.right-panel {
  display: flex;
  flex-direction: column;
  overflow: auto;
  background: var(--bg);
}

/* ─── Left Panel (Chat / Tabs) ────────────────────────── */
.chat-panel {
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tab-content {
  display: none;
}

.tab-content.is-active {
  display: flex !important;
}

.chat-panel__header {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.chat-panel__header h2 {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.chat-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

/* ─── Analyzer Panel ──────────────────────────────────── */
.analyzer-panel {
  padding: 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
  flex: 1;
}

.analyzer-panel .vision-uploader {
  margin: 0;
  background: var(--bg-elevated);
}

/* ─── Projects Grid ───────────────────────────────────── */
.projects-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.projects-segmented {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  width: fit-content;
  max-width: 100%;
}

.projects-segmented__tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--faint);
  border-radius: 9px;
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}

.projects-segmented__tab:hover {
  color: var(--ink);
  background: rgba(148, 163, 184, 0.08);
}

.projects-segmented__tab.is-active {
  background: var(--brand-soft);
  color: var(--brand);
  box-shadow: inset 0 0 0 1px var(--brand-muted);
}

.projects-resource-panel {
  display: none;
  flex-direction: column;
  gap: 14px;
}

.projects-resource-panel.is-active {
  display: flex;
}

.projects-toolbar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
}

.projects-toolbar__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}

.projects-toolbar__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 8px;
  align-items: center;
}

.projects-toolbar__input {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink);
  padding: 10px 12px;
  font-size: 13px;
}

.projects-toolbar__input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.14);
}

.projects-toolbar__status {
  margin: 0;
  min-height: 16px;
  font-size: 12px;
  color: var(--faint);
}

.projects-toolbar__status.is-error {
  color: var(--error);
}

.projects-toolbar__status.is-success {
  color: var(--success);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--panel-shadow-lg);
  transform: translateY(-1px);
}

.project-card--new {
  border-style: dashed;
  border-color: var(--border);
  align-items: center;
  justify-content: center;
  min-height: 160px;
  color: var(--faint);
}

.project-card--new:hover {
  color: var(--brand);
  border-color: var(--brand-muted);
  background: var(--brand-soft);
}

.project-card__icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  line-height: 1;
}

.project-card__thumbnail {
  width: 100%;
  height: 100px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.project-thumb {
  position: relative;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 18% 18%, rgba(59, 130, 246, 0.09), transparent 55%),
    radial-gradient(circle at 82% 18%, rgba(14, 165, 233, 0.06), transparent 58%),
    linear-gradient(180deg, rgba(248, 250, 252, 0.95), rgba(241, 245, 249, 0.98));
}

.project-thumb__svg {
  display: block;
  width: 100%;
  height: 100%;
}

.project-thumb__overlay {
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 6px;
  padding: 3px 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(203, 213, 225, 0.9);
  color: var(--ink);
  font-size: 10px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.project-thumb--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  color: var(--faint);
  background:
    radial-gradient(circle at 22% 20%, rgba(148, 163, 184, 0.12), transparent 55%),
    linear-gradient(180deg, rgba(248, 250, 252, 0.95), rgba(241, 245, 249, 0.98));
}

.project-thumb--empty .bi {
  font-size: 20px;
  line-height: 1;
}

.project-thumb__empty-label {
  font-size: 11px;
  font-weight: 600;
}

.project-card__info h3 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.project-card__date {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--faint);
}

.project-card--saved {
  cursor: default;
  min-height: 170px;
}

.project-card--saved.is-linked {
  border-color: var(--brand-muted);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.15);
}

.project-card--saved:hover {
  transform: none;
}

.project-card__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.project-card__name {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
  word-break: break-word;
}

.project-card__id {
  font-size: 11px;
  color: var(--faint);
}

.project-card__subtext {
  margin: 0;
  font-size: 11px;
  color: var(--ink-secondary);
}

.project-card__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: auto;
}

.project-card__button-row {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex-shrink: 0;
}

.project-card__confirm {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.project-card__confirm-text {
  font-size: 11px;
  font-weight: 600;
  color: var(--error);
}

.project-card__empty {
  grid-column: 1 / -1;
  background: var(--bg-elevated);
  border: 1px dashed var(--border);
  color: var(--faint);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  font-size: 12px;
}

.project-card.is-loading {
  opacity: 0.7;
  pointer-events: none;
}

.app-toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1200;
  pointer-events: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 160ms ease, transform 200ms ease;
  background: rgba(6, 78, 59, 0.96);
  color: #ecfdf5;
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(6, 78, 59, 0.25);
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
}

.app-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 700px) {
  .projects-segmented {
    width: 100%;
  }

  .projects-segmented__tab {
    flex: 1;
    text-align: center;
  }

  .projects-toolbar__row {
    grid-template-columns: 1fr;
  }

  .app-toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }
}

/* ─── Settings ────────────────────────────────────────── */
.settings-section {
  margin-bottom: 32px;
}

.settings-section h3 {
  margin: 0 0 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.settings-row:last-child {
  border-bottom: none;
}

.settings-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-secondary);
}

.settings-row--actions {
  align-items: flex-start;
}

.settings-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(220px, 100%);
  margin-left: auto;
}

.settings-actions .button {
  width: 100%;
  justify-content: center;
}

.settings-row input[type="number"],
.settings-row select {
  width: auto;
  min-width: 120px;
}

/* ─── Layout Panel ────────────────────────────────────── */
.layout-panel {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.layout-panel__header {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.layout-panel__header h2 {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.layout-panel__actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.layout-panel__agent-tools {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.layout-panel__agent-tools .button[hidden] {
  display: none;
}

.layout-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ─── Summary Cards (KPI) ─────────────────────────────── */
.layout-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.summary-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: box-shadow var(--transition);
}

.summary-card:hover {
  box-shadow: var(--panel-shadow-lg);
}

.summary-card__label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--faint);
  font-weight: 600;
}

.summary-card__value {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
}

/* ─── Forms & Inputs ──────────────────────────────────── */
select,
input[type="number"],
input[type="text"],
textarea {
  appearance: none;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-family: "Inter", sans-serif;
  font-size: 13px;
  color: var(--ink);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

textarea {
  width: 100%;
  height: 200px;
  resize: none;
}

input[type="file"] {
  font-size: 12px;
  color: var(--ink-tertiary);
}

select {
  padding-right: 32px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708'/%3E%3C/svg%3E");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: var(--focus-ring);
}

.tuning-textarea {
  min-height: 160px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  background: var(--bg);
  border-radius: var(--radius);
}

input[type="checkbox"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border-hover);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  position: relative;
  cursor: pointer;
  transition: all var(--transition-fast);
}

input[type="checkbox"]:checked {
  background: var(--brand);
  border-color: var(--brand);
}

input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

input[type="checkbox"]:focus {
  box-shadow: var(--focus-ring);
}

/* ─── Buttons ─────────────────────────────────────────── */
.button {
  background: var(--primary);
  color: var(--accent-fg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  font-family: "Inter", sans-serif;
  cursor: pointer;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition),
    transform 120ms ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
  letter-spacing: 0.01em;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
}

.button:hover:not(:disabled) {
  background: var(--accent-hover);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.button:active:not(:disabled) {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring), 0 1px 2px rgba(0, 0, 0, 0.06);
}

.button--ghost {
  background: var(--bg-elevated);
  color: var(--ink-secondary);
  border: 1px solid var(--border);
  box-shadow: none;
}

.button--ghost:hover:not(:disabled) {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transform: translateY(-1px);
}

.button--ghost:active:not(:disabled) {
  background: var(--border);
  transform: translateY(0) scale(0.97);
  box-shadow: none;
}

.button--ghost:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: var(--brand-muted);
}

.button--emphasis {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-hover) 100%);
  color: #fff;
  border: 1px solid transparent;
  box-shadow: 0 1px 3px rgba(59, 130, 246, 0.25), 0 1px 2px rgba(59, 130, 246, 0.15);
}

.button--emphasis:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--brand-hover) 0%, #1d4ed8 100%);
  box-shadow: 0 3px 10px rgba(59, 130, 246, 0.3), 0 1px 3px rgba(59, 130, 246, 0.2);
  transform: translateY(-1px);
}

.button--emphasis:active:not(:disabled) {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 1px 3px rgba(59, 130, 246, 0.2);
}

.button--emphasis:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3), 0 1px 3px rgba(59, 130, 246, 0.2);
}

.button--danger {
  background: var(--error);
  color: #fff;
  border: 1px solid transparent;
  box-shadow: 0 1px 3px rgba(220, 38, 38, 0.2);
}

.button--danger:hover:not(:disabled) {
  background: #b91c1c;
  box-shadow: 0 3px 10px rgba(220, 38, 38, 0.25);
  transform: translateY(-1px);
}

.button--small {
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius);
}

.button--icon-only {
  padding: 7px;
  min-width: 32px;
  min-height: 32px;
}

.button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
  transform: none;
}

.button svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.button .bi {
  font-size: 15px;
  line-height: 1;
  flex-shrink: 0;
}

/* ─── Panel Body & Structure ──────────────────────────── */
.panel__body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel__footer {
  padding: 0 24px 24px;
}

.panel--input .panel__header,
.panel--input .panel__footer,
.panel--input #status,
.panel--input .generator,
.panel--input #inputJson {
  display: none;
}

.panel--input .panel__body {
  align-items: center;
  padding-top: 32px;
}

/* ─── Generator & Controls ────────────────────────────── */
.generator {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.generator__row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.generator label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-secondary);
}

.generator__note {
  font-size: 11px;
  color: var(--faint);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.generator__toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
}

/* ─── Status & Indicators ─────────────────────────────── */
@keyframes statusSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes statusIconBounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

.status {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: -0.01em;
  color: var(--ink);
  background: linear-gradient(135deg, #f0f4ff 0%, #e8eeff 50%, #f0f4ff 100%);
  border-radius: 14px;
  padding: 16px 22px 16px 20px;
  border: 1.5px solid rgba(59, 130, 246, 0.25);
  border-left: 5px solid var(--brand);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow:
    0 2px 8px rgba(59, 130, 246, 0.08),
    0 1px 3px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  animation: statusSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
}

.status:hover {
  box-shadow:
    0 4px 14px rgba(59, 130, 246, 0.12),
    0 2px 4px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transform: translateY(-1px);
}

/* Shimmer overlay for depth & polish */
.status::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255, 255, 255, 0.6) 30%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 100%
  );
  pointer-events: none;
}

/* Decorative indicator dot */
.status::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 12px;
  transform: translateY(-50%);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 6px rgba(59, 130, 246, 0.4);
  animation: statusPulse 2.5s ease-in-out infinite;
}

.status--success {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #ecfdf5 100%);
  border-color: rgba(5, 150, 105, 0.3);
  border-left-color: var(--success);
  color: #064e3b;
  box-shadow:
    0 2px 8px rgba(5, 150, 105, 0.1),
    0 1px 3px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--success::after {
  background: var(--success);
  box-shadow: 0 0 6px rgba(5, 150, 105, 0.45);
}

.status--success:hover {
  box-shadow:
    0 4px 14px rgba(5, 150, 105, 0.15),
    0 2px 4px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--error {
  background: linear-gradient(135deg, #fef2f2 0%, #fde8e8 50%, #fef2f2 100%);
  border-color: rgba(220, 38, 38, 0.3);
  border-left-color: var(--error);
  color: #7f1d1d;
  box-shadow:
    0 2px 8px rgba(220, 38, 38, 0.1),
    0 1px 3px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--error::after {
  background: var(--error);
  box-shadow: 0 0 6px rgba(220, 38, 38, 0.45);
  animation: statusIconBounce 1.5s ease-in-out infinite;
}

.status--error:hover {
  box-shadow:
    0 4px 14px rgba(220, 38, 38, 0.15),
    0 2px 4px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--warning {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 50%, #fffbeb 100%);
  border-color: rgba(217, 119, 6, 0.3);
  border-left-color: var(--warning);
  color: #713f12;
  box-shadow:
    0 2px 8px rgba(217, 119, 6, 0.1),
    0 1px 3px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--warning::after {
  background: var(--warning);
  box-shadow: 0 0 6px rgba(217, 119, 6, 0.45);
}

.status--warning:hover {
  box-shadow:
    0 4px 14px rgba(217, 119, 6, 0.15),
    0 2px 4px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--loading {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #eff6ff 100%);
  border-color: rgba(59, 130, 246, 0.35);
  border-left-color: var(--brand);
  color: var(--ink);
  box-shadow:
    0 2px 10px rgba(59, 130, 246, 0.12),
    0 1px 3px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.status--loading::after {
  /* Override dot with animated spinner stripe */
  width: auto;
  height: auto;
  top: auto;
  left: auto;
  transform: none;
  border-radius: 0;
  background: none;
  animation: none;
  box-shadow: none;
}

/* Animated loading stripe */
@keyframes statusLoadingStripe {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes statusLoadingGlow {
  0%, 100% { box-shadow: 0 2px 10px rgba(59, 130, 246, 0.12), 0 1px 3px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.7); }
  50% { box-shadow: 0 3px 16px rgba(59, 130, 246, 0.2), 0 1px 3px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.7); }
}

.status--loading {
  animation: statusSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) both,
             statusLoadingGlow 2s ease-in-out infinite;
}

/* Top progress bar for loading */
.status--loading::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(59, 130, 246, 0.3) 20%,
    var(--brand) 50%,
    rgba(59, 130, 246, 0.3) 80%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: statusLoadingStripe 1.8s ease-in-out infinite;
  border-radius: 3px 3px 0 0;
}

.status--small {
  font-size: 13px;
  padding: 14px 18px 14px 24px;
}

/* ─── Floorplan Details ───────────────────────────────── */
.floorplan-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.floorplan-details__title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}

.floorplan-details__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.floorplan-details__list li {
  margin: 4px 0;
  line-height: 1.35;
}

.floorplan-details__row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
}

.floorplan-details__zoom {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.floorplan-details__zoom canvas {
  width: 120px;
  height: 120px;
  display: block;
}

.floorplan-details__prompt {
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
}

.floorplan-details__select {
  min-width: 160px;
}

/* ─── Floorplan Upload ────────────────────────────────── */
.vision-uploader {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.vision-uploader__header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.vision-uploader__header h3 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.vision-uploader__header p {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.vision-uploader__controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

/* Analyzer action buttons — pill-shaped with inline icons */
.vision-uploader__controls .button {
  border-radius: 999px;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  gap: 7px;
}

.vision-uploader__controls .button--ghost {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--ink-secondary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.vision-uploader__controls .button--ghost:hover:not(:disabled) {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
  color: var(--ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.vision-uploader__controls .button--ghost:active:not(:disabled) {
  transform: translateY(0) scale(0.96);
  box-shadow: none;
}

/* "Detect boundary" — primary action gets brand gradient */
.vision-uploader__controls .button:not(.button--ghost) {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-hover) 100%);
  color: #fff;
  border: 1px solid transparent;
  box-shadow:
    0 1px 3px rgba(59, 130, 246, 0.3),
    0 1px 2px rgba(59, 130, 246, 0.15);
}

.vision-uploader__controls .button:not(.button--ghost):hover:not(:disabled) {
  background: linear-gradient(135deg, var(--brand-hover) 0%, #1d4ed8 100%);
  box-shadow:
    0 4px 12px rgba(59, 130, 246, 0.35),
    0 1px 3px rgba(59, 130, 246, 0.2);
  transform: translateY(-2px);
}

.vision-uploader__controls .button:not(.button--ghost):active:not(:disabled) {
  transform: translateY(0) scale(0.96);
  box-shadow: 0 1px 3px rgba(59, 130, 246, 0.2);
}

.vision-uploader__controls .button:disabled {
  opacity: 0.35;
  box-shadow: none;
  transform: none;
}

.vision-uploader__controls .button[aria-pressed="true"] {
  border-color: var(--brand);
  color: var(--brand);
  background: rgba(59, 130, 246, 0.1);
}

.vision-uploader__preview {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 4px;
  overflow: hidden;
}

.vision-uploader__stage {
  position: relative;
  width: 100%;
}

#floorplanCanvas {
  width: 100%;
  height: 800px;
  display: block;
  cursor: default;
  touch-action: none;
  border-radius: var(--radius);
}

#floorplanCanvas.is-panning {
  cursor: grabbing;
}

#floorplanCanvas.is-pan-mode {
  cursor: grab;
}

#floorplanOverlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: block;
}

/* ─── Floorplan Prompt Overlay ────────────────────────── */
.floorplan-prompt {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  max-width: min(420px, 90%);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
  display: none;
  flex-direction: column;
  gap: 10px;
  z-index: 2;
}

.floorplan-prompt.is-visible {
  display: flex;
}

.floorplan-prompt__title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
}

.floorplan-prompt__text {
  font-size: 14px;
  line-height: 1.45;
  font-weight: 500;
}

.floorplan-prompt__options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.floorplan-prompt__options button {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    transform 100ms ease,
    box-shadow var(--transition-fast);
  backdrop-filter: blur(4px);
}

.floorplan-prompt__options button:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.floorplan-prompt__options button:active {
  transform: translateY(0) scale(0.96);
  box-shadow: none;
}

.floorplan-prompt__counter {
  font-size: 11px;
  opacity: 0.5;
}

/* ─── Hidden Config ───────────────────────────────────── */
.hidden-config {
  display: none;
}

/* ─── LLM / Chat ─────────────────────────────────────── */
.llm {
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}

.llm__modes {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.llm__modes .button {
  flex: 1;
  text-align: center;
  border: none;
  border-radius: var(--radius);
  font-size: 12px;
  padding: 7px 14px;
  background: transparent;
  color: var(--muted);
  font-weight: 500;
  box-shadow: none;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform 100ms ease;
}

.llm__modes .button:hover {
  color: var(--ink);
  background: var(--bg-elevated);
}

.llm__modes .button:active {
  transform: scale(0.97);
}

.llm__modes [aria-pressed="true"] {
  background: var(--bg-elevated) !important;
  color: var(--ink) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  font-weight: 600;
}

/* ─── Viewer / Canvas ─────────────────────────────────── */
.canvas-workspace {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.canvas-tool-rail {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--panel-shadow);
}

.canvas-tool-button {
  width: 100%;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.canvas-tool-button:hover {
  color: var(--ink);
  border-color: var(--border-hover);
}

.canvas-tool-button[aria-pressed="true"] {
  color: var(--ink);
  background: var(--bg-subtle);
  border-color: var(--brand);
  box-shadow: inset 0 0 0 1px rgba(24, 94, 84, 0.15);
}

.canvas-tool-button .bi {
  font-size: 16px;
  line-height: 1;
}

.canvas-stage {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.component-palette {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px;
  box-shadow: var(--panel-shadow);
}

.component-palette__button {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.component-palette__button:hover {
  color: var(--ink);
  border-color: var(--border-hover);
}

.component-palette__button[aria-pressed="true"] {
  color: var(--ink);
  border-color: var(--brand);
  background: var(--brand-soft);
}

.component-palette__button--action {
  margin-left: 4px;
}

.component-palette__button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.component-palette__button:disabled:hover {
  color: var(--muted);
  border-color: var(--border);
}

.canvas-stage__hud {
  margin-left: auto;
  display: inline-flex;
  gap: 14px;
  align-items: center;
  color: var(--faint);
  font-size: 12px;
  font-weight: 600;
}

.viewer {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px;
  position: relative;
  flex-shrink: 0;
  box-shadow: var(--panel-shadow);
}

#layoutCanvas {
  width: 100%;
  height: 800px;
  display: block;
  border-radius: var(--radius-md);
  border: none;
  background: var(--bg);
  cursor: default;
}

#layoutCanvas.is-tool-pan {
  cursor: grab;
}

#layoutCanvas.is-tool-pan.is-dragging {
  cursor: grabbing;
}

#layoutCanvas.is-tool-measure {
  cursor: crosshair;
}

#layoutCanvas.is-tool-boxselect {
  cursor: crosshair;
}

#layoutCanvas.is-tool-boxselect.is-dragging {
  cursor: crosshair;
}

#layoutCanvas.is-tool-component-place,
#layoutCanvas.is-tool-paste {
  cursor: crosshair;
}

#layoutCanvas.is-tool-select.is-dragging {
  cursor: move;
}

/* ─── Placement Prompt ────────────────────────────────── */
.placement-prompt {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: min(320px, 90%);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--panel-shadow-xl);
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.placement-prompt.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.placement-prompt__title {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin-bottom: 8px;
}

.placement-prompt__text {
  font-size: 13px;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.5;
}

.placement-prompt__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 180px;
  overflow-y: auto;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--muted);
}

.placement-prompt__item {
  padding: 6px 10px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border-subtle);
}

.placement-prompt__actions {
  display: flex;
  justify-content: flex-end;
}

/* ─── Placement Editor ────────────────────────────────── */
/* ─── Metrics Cards ───────────────────────────────────── */
.metrics {
  display: none;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.metrics__block {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  border: 1px solid var(--border);
}

.metrics__block h3 {
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--faint);
}

.metrics__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 8px;
}

.metrics__row:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.metrics__row span {
  font-size: 13px;
  color: var(--muted);
}

.metrics__row strong {
  color: var(--ink);
  font-weight: 600;
  font-feature-settings: "tnum";
}

/* ─── Tabs ────────────────────────────────────────────── */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  background: var(--bg);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.tab {
  border: 1px solid transparent;
  background: transparent;
  padding: 5px 12px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  color: var(--muted);
  transition: all var(--transition-fast);
}

.tab:hover {
  color: var(--ink);
  background: var(--bg-subtle);
}

.tab.active {
  background: var(--bg-elevated);
  color: var(--ink);
  border-color: var(--border);
  font-weight: 600;
  box-shadow: var(--panel-shadow);
}

/* ─── LLM Chat ────────────────────────────────────────── */
.llm__agent,
.llm__chat {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.llm[data-mode="agent"] .llm__chat {
  display: flex;
}

.llm[data-mode="chat"] .llm__agent {
  display: none;
}

.llm__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.llm__suggestion {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 12px;
  font-weight: 500;
  background: var(--bg-elevated);
  cursor: pointer;
  color: var(--ink-tertiary);
  transition:
    border-color var(--transition),
    color var(--transition),
    background var(--transition),
    box-shadow var(--transition),
    transform 120ms ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.llm__suggestion:hover {
  border-color: var(--brand-muted);
  color: var(--brand-hover);
  background: var(--brand-soft);
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.1);
  transform: translateY(-1px);
}

.llm__suggestion:active {
  transform: translateY(0) scale(0.97);
  box-shadow: none;
}

.llm__chat-log {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  background: var(--bg);
  flex: 0 0 auto;
  height: 677px;
  max-height: 677px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Custom scrollbar for chat */
.llm__chat-log::-webkit-scrollbar {
  width: 6px;
}

.llm__chat-log::-webkit-scrollbar-track {
  background: transparent;
}

.llm__chat-log::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 3px;
}

.llm__chat-log::-webkit-scrollbar-thumb:hover {
  background: var(--border-active);
}

.llm__bubble {
  padding: 10px 14px;
  border-radius: var(--radius-lg);
  font-size: 13px;
  line-height: 1.6;
  max-width: 88%;
}

.llm__metric-cards {
  display: grid;
  gap: 8px;
  margin-top: 0;
}

.llm__metric-card {
  display: grid;
  gap: 8px;
}

.llm__metric-card-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted-foreground);
}

.llm__metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.llm__metric-pill {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  display: grid;
  gap: 4px;
  min-width: 0;
}

.llm__metric-pill-label {
  font-size: 10px;
  line-height: 1.2;
  color: var(--muted-foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.llm__metric-pill-value {
  font-size: 16px;
  line-height: 1.1;
  font-weight: 700;
  color: var(--foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-feature-settings: "tnum";
}

.llm__metric-pill[data-tone="primary"] .llm__metric-pill-value {
  color: var(--primary);
}

.llm__metric-pill[data-tone="success"] .llm__metric-pill-value {
  color: #10b981;
}

.llm__metric-pill[data-tone="warning"] .llm__metric-pill-value {
  color: #f59e0b;
}

.llm__metric-pill[data-tone="danger"] .llm__metric-pill-value {
  color: #ef4444;
}

.llm__metric-summary {
  margin: 8px 0 0;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}

.llm__metric-summary p {
  margin: 0;
}

.llm__metric-body {
  margin-top: 8px;
}

@media (max-width: 640px) {
  .llm__metric-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.llm__bubble h1,
.llm__bubble h2,
.llm__bubble h3,
.llm__bubble h4 {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.llm__bubble p {
  margin: 0 0 6px;
}

.llm__bubble p:last-child {
  margin-bottom: 0;
}

.llm__bubble ul,
.llm__bubble ol {
  margin: 0 0 6px 16px;
  padding: 0;
}

.llm__bubble li {
  margin-bottom: 3px;
}

.llm__bubble code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 11.5px;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
}

.llm__bubble pre {
  margin: 0 0 6px;
  padding: 12px 14px;
  background: #1e293b;
  border: none;
  border-radius: var(--radius-md);
  overflow-x: auto;
  color: #e2e8f0;
}

.llm__bubble pre code {
  border: none;
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: 12px;
}

.llm__table-wrap {
  margin: 8px 0 6px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  overflow-x: auto;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.llm__table {
  width: 100%;
  min-width: 440px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 12px;
  line-height: 1.35;
  color: var(--foreground);
}

.llm__table th,
.llm__table td {
  padding: 9px 10px;
  vertical-align: top;
  border-bottom: 1px solid var(--border-subtle);
}

.llm__table th + th,
.llm__table td + td {
  border-left: 1px solid var(--border-subtle);
}

.llm__table thead th {
  background: color-mix(in srgb, var(--muted) 82%, white);
  color: var(--muted-foreground);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.llm__table tbody td {
  background: rgba(255, 255, 255, 0.84);
}

.llm__table tbody tr:nth-child(even) td {
  background: color-mix(in srgb, var(--muted) 28%, white);
}

.llm__table tbody tr:last-child td {
  border-bottom: none;
}

.llm__bubble--user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border: none;
  border-bottom-right-radius: var(--radius-sm);
}

.llm__bubble--user code {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.llm__bubble--assistant {
  align-self: flex-start;
  background: var(--bg-elevated);
  color: var(--ink);
  border: 1px solid var(--border);
  border-bottom-left-radius: var(--radius-sm);
}

.llm__bubble--system {
  align-self: center;
  background: transparent;
  color: var(--faint);
  font-style: italic;
  font-size: 12px;
  border: none;
  padding: 4px 12px;
}

/* ─── Feedback Buttons ────────────────────────────────── */
.llm__message-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.llm__message-implement-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 0 10px;
}

.llm__message-implement-btn svg {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
}

.llm__feedback {
  margin-top: 8px;
  display: flex;
  gap: 6px;
}

.llm__feedback-btn {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 11px;
  line-height: 1.3;
  font-weight: 500;
  background: var(--bg-elevated);
  color: var(--faint);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast),
    transform 100ms ease;
}

.llm__feedback-btn:hover:not(:disabled) {
  border-color: var(--border-hover);
  color: var(--ink-tertiary);
  background: var(--bg-subtle);
  transform: translateY(-1px);
}

.llm__feedback-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.llm__feedback-btn.is-selected {
  border-color: var(--brand);
  color: var(--brand);
  background: var(--brand-soft);
  font-weight: 600;
}

.llm__feedback-btn:disabled {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}

/* ─── Chat Input ──────────────────────────────────────── */
.llm__chat-input {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.llm__input {
  width: 100%;
  min-height: 72px;
  max-height: 200px;
  resize: vertical;
  font-family: "Inter", sans-serif;
  font-size: 13px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: 1.5;
}

.llm__input::placeholder {
  color: var(--faint);
}

.llm__input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: var(--focus-ring);
}

/* ─── Progress & Todo ─────────────────────────────────── */
.llm__progress {
  margin-top: 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
  background: var(--bg);
  display: none;
  position: relative;
  overflow: hidden;
}

.llm__progress::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--brand);
}

.llm__progress.is-visible {
  display: block;
}

.llm__todo {
  margin-top: 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 14px 16px;
  font-size: 13px;
  background: var(--bg-elevated);
  color: var(--ink);
  display: none;
}

.llm__todo.is-visible {
  display: block;
}

.llm__todo-title {
  font-weight: 600;
  font-size: 12px;
  margin-bottom: 10px;
  color: var(--ink-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.llm__todo-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.llm__todo-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
  font-size: 13px;
}

.llm__todo-item.is-done {
  color: var(--faint);
  text-decoration: line-through;
}

.llm__todo-check {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-hover);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.llm__todo-item.is-done .llm__todo-check {
  border-color: var(--success);
  background: var(--success);
}

/* ─── Responsive ──────────────────────────────────────── */
@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .canvas-workspace {
    grid-template-columns: 1fr;
  }

  .canvas-tool-rail {
    flex-direction: row;
  }

  .canvas-stage__hud {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .chat-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .sidebar {
    width: 100%;
    flex-direction: row;
    padding: 8px 16px;
    height: auto;
  }

  .sidebar::after {
    display: none;
  }

  .sidebar__header {
    border-bottom: none;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 0;
    padding-right: 16px;
  }

  .sidebar__nav {
    flex-direction: row;
    padding: 0;
  }

  .sidebar__tab--active::before {
    display: none;
  }

  body {
    flex-direction: column;
  }
}

/* ─── Utilities ───────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ─── Text selection ──────────────────────────────────── */
::selection {
  background: rgba(59, 130, 246, 0.18);
  color: inherit;
}

/* ─── Smooth scrolling ────────────────────────────────── */
.chat-panel__body,
.layout-panel__body,
.right-panel {
  scrollbar-width: thin;
  scrollbar-color: var(--border-hover) transparent;
}

.chat-panel__body::-webkit-scrollbar,
.layout-panel__body::-webkit-scrollbar,
.right-panel::-webkit-scrollbar {
  width: 6px;
}

.chat-panel__body::-webkit-scrollbar-track,
.layout-panel__body::-webkit-scrollbar-track,
.right-panel::-webkit-scrollbar-track {
  background: transparent;
}

.chat-panel__body::-webkit-scrollbar-thumb,
.layout-panel__body::-webkit-scrollbar-thumb,
.right-panel::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 3px;
}

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS & KEYFRAMES
   ═══════════════════════════════════════════════════════════ */

/* Chat bubble entrance */
@keyframes bubbleInLeft {
  from {
    opacity: 0;
    transform: translateX(-12px) translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateX(0) translateY(0);
  }
}

@keyframes bubbleInRight {
  from {
    opacity: 0;
    transform: translateX(12px) translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateX(0) translateY(0);
  }
}

@keyframes bubbleInCenter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.llm__bubble--assistant {
  animation: bubbleInLeft 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.llm__bubble--user {
  animation: bubbleInRight 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.llm__bubble--system {
  animation: bubbleInCenter 0.3s ease-out both;
}

/* Suggestion chip entrance */
@keyframes chipIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.llm__suggestion {
  animation: chipIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.llm__suggestion:nth-child(1) { animation-delay: 0ms; }
.llm__suggestion:nth-child(2) { animation-delay: 60ms; }
.llm__suggestion:nth-child(3) { animation-delay: 120ms; }
.llm__suggestion:nth-child(4) { animation-delay: 180ms; }
.llm__suggestion:nth-child(5) { animation-delay: 240ms; }

/* Typing indicator dots */
@keyframes dotBounce {
  0%, 80%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  40% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

.llm__typing-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  margin-right: 8px;
  vertical-align: middle;
}

.llm__typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  animation: dotBounce 1.2s ease-in-out infinite;
}

.llm__typing-dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.llm__typing-dots span:nth-child(3) {
  animation-delay: 0.3s;
}

/* Progress shimmer */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.llm__progress.is-loading {
  background: linear-gradient(
    90deg,
    var(--bg) 0%,
    var(--brand-soft) 25%,
    var(--bg) 50%,
    var(--brand-soft) 75%,
    var(--bg) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2.5s ease-in-out infinite;
}

/* Todo item entrance */
@keyframes todoSlideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.llm__todo-item {
  animation: todoSlideIn 0.25s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.llm__todo-item:nth-child(1) { animation-delay: 0ms; }
.llm__todo-item:nth-child(2) { animation-delay: 50ms; }
.llm__todo-item:nth-child(3) { animation-delay: 100ms; }
.llm__todo-item:nth-child(4) { animation-delay: 150ms; }
.llm__todo-item:nth-child(5) { animation-delay: 200ms; }
.llm__todo-item:nth-child(6) { animation-delay: 250ms; }

/* Checkmark bounce */
@keyframes checkBounce {
  0% { transform: scale(0); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

.llm__todo-item.is-done .llm__todo-check {
  animation: checkBounce 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* Metrics block entrance */
@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.metrics__block {
  animation: fadeSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.metrics__block:nth-child(1) { animation-delay: 0ms; }
.metrics__block:nth-child(2) { animation-delay: 80ms; }
.metrics__block:nth-child(3) { animation-delay: 160ms; }
.metrics__block:nth-child(4) { animation-delay: 240ms; }

/* KPI value update flash */
@keyframes kpiPop {
  0% {
    transform: scale(1);
    color: var(--ink);
  }
  40% {
    transform: scale(1.08);
    color: var(--brand);
  }
  100% {
    transform: scale(1);
    color: var(--ink);
  }
}

.summary-card__value.is-updated {
  animation: kpiPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Canvas new-layout pulse */
@keyframes canvasPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.15);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.08);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
  }
}

.viewer.is-fresh {
  animation: canvasPulse 0.8s ease-out;
}

/* Button ripple */
@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.25;
  }
  100% {
    transform: scale(2.5);
    opacity: 0;
  }
}

.button {
  position: relative;
  overflow: hidden;
}

.button__ripple {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  width: 40px;
  height: 40px;
  margin-left: -20px;
  margin-top: -20px;
  pointer-events: none;
  animation: ripple 0.5s ease-out forwards;
  opacity: 0.15;
}

/* Focus ring animation */
@keyframes focusRingIn {
  from {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
  }
  to {
    box-shadow: var(--focus-ring);
  }
}

input:focus,
select:focus,
textarea:focus {
  animation: focusRingIn 0.2s ease-out forwards;
}

/* ═══════════════════════════════════════════════════════════
   WELCOME CARD — First-run onboarding in chat
   ═══════════════════════════════════════════════════════════ */

@keyframes welcomeFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes welcomePulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

.welcome-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 48px 32px 36px;
  gap: 20px;
  animation: welcomeFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.welcome-card.is-leaving {
  opacity: 0;
  transform: translateY(-12px) scale(0.97);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

/* Animated warehouse illustration (CSS-only geometric shapes) */
.welcome-card__illustration {
  width: 120px;
  height: 80px;
  position: relative;
  margin-bottom: 4px;
}

.welcome-card__building {
  position: absolute;
  bottom: 0;
  border-radius: 4px 4px 0 0;
  background: var(--border);
  transition: background 0.3s ease;
}

.welcome-card__building--main {
  left: 20px;
  width: 80px;
  height: 50px;
  background: linear-gradient(180deg, var(--brand-soft) 0%, var(--border) 100%);
}

.welcome-card__building--left {
  left: 0;
  width: 30px;
  height: 35px;
}

.welcome-card__building--right {
  right: 0;
  width: 25px;
  height: 40px;
}

.welcome-card__building--door {
  left: 48px;
  bottom: 0;
  width: 24px;
  height: 20px;
  background: var(--brand);
  border-radius: 4px 4px 0 0;
  opacity: 0.6;
  animation: welcomePulse 2s ease-in-out infinite;
}

.welcome-card__building--roof {
  left: 15px;
  bottom: 50px;
  width: 90px;
  height: 8px;
  background: var(--ink);
  border-radius: 3px;
  opacity: 0.15;
}

.welcome-card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin: 0;
}

.welcome-card__subtitle {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
  max-width: 320px;
  line-height: 1.5;
}

.welcome-card__actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 340px;
  margin-top: 8px;
}

.welcome-card__action {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  font-family: "Inter", sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-secondary);
}

.welcome-card__action:hover {
  border-color: var(--brand-muted);
  background: var(--brand-soft);
  color: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: var(--panel-shadow-lg);
}

.welcome-card__action-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--brand);
}

.welcome-card__action-icon svg {
  width: 16px;
  height: 16px;
}

.welcome-card__action-icon .bi {
  font-size: 16px;
  line-height: 1;
}

.welcome-card__action span {
  flex: 1;
}

/* Staggered entrance for action buttons */
.welcome-card__action:nth-child(1) { animation: chipIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both; }
.welcome-card__action:nth-child(2) { animation: chipIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both; }
.welcome-card__action:nth-child(3) { animation: chipIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both; }

/* ═══════════════════════════════════════════════════════════
   UPLOAD DROPZONE — Drag-and-drop floorplan upload
   ═══════════════════════════════════════════════════════════ */

.upload-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 160px;
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius-lg);
  background: var(--bg);
  padding: 32px 24px;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
}

.upload-dropzone:hover {
  border-color: var(--brand-muted);
  background: var(--brand-soft);
}

.upload-dropzone--active {
  border-color: var(--brand);
  background: rgba(59, 130, 246, 0.06);
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08);
}

@keyframes dropzoneBounce {
  0% { transform: scale(1.01); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

.upload-dropzone--dropped {
  animation: dropzoneBounce 0.3s ease-out;
}

.upload-dropzone__icon {
  width: 40px;
  height: 40px;
  color: var(--faint);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  line-height: 1;
}

.upload-dropzone:hover .upload-dropzone__icon,
.upload-dropzone--active .upload-dropzone__icon {
  color: var(--brand);
}

.upload-dropzone__text {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-align: center;
}

.upload-dropzone__text strong {
  color: var(--brand);
  font-weight: 600;
}

.upload-dropzone__browse {
  font-size: 12px;
  font-weight: 500;
  color: var(--brand);
  background: none;
  border: 1px solid var(--brand-muted);
  border-radius: 999px;
  padding: 6px 16px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: "Inter", sans-serif;
}

.upload-dropzone__browse:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.upload-dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Hide dropzone when floorplan image is loaded */
.upload-dropzone.is-hidden {
  display: none;
}

/* ═══════════════════════════════════════════════════════════
   SEND BUTTON — Enhanced chat send
   ═══════════════════════════════════════════════════════════ */

.llm__chat-input .button--send {
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: var(--radius-lg);
  padding: 8px 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 13px;
  transition: all var(--transition);
  align-self: flex-end;
}

.llm__chat-input .button--send:hover:not(:disabled) {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
}

.llm__chat-input .button--send:active:not(:disabled) {
  transform: scale(0.97);
}

.llm__chat-input .button--send:disabled {
  background: var(--border-hover);
  color: var(--faint);
}

.llm__chat-input .button--send svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.llm__chat-input .button--send .bi {
  font-size: 16px;
  line-height: 1;
  transition: transform var(--transition);
}

.llm__chat-input .button--send:hover:not(:disabled) svg {
  transform: translateX(2px);
}

.llm__chat-input .button--send:hover:not(:disabled) .bi {
  transform: translateX(2px);
}

/* Send button spinner */
@keyframes sendSpin {
  to { transform: rotate(360deg); }
}

.button--send .send-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: sendSpin 0.7s linear infinite;
  display: none;
}

.button--send.is-loading .send-spinner {
  display: block;
}

.button--send.is-loading svg {
  display: none;
}

.button--send.is-loading .bi {
  display: none;
}

.button--send.is-loading {
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   FLOORPLAN EMPTY STATE
   ═══════════════════════════════════════════════════════════ */

.vision-uploader__preview.is-empty {
  position: relative;
}

.vision-uploader__preview.is-empty::after {
  content: "";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border-radius: var(--radius-md);
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   ENHANCED CHAT INPUT FOCUS STATE
   ═══════════════════════════════════════════════════════════ */

.llm__chat-input {
  transition: border-color var(--transition), box-shadow var(--transition);
}

.llm__chat-input:focus-within {
  border-top-color: var(--brand-muted);
}

.llm__chat-input:focus-within .llm__input {
  box-shadow: var(--focus-ring), 0 2px 8px rgba(59, 130, 246, 0.06);
}

/* ═══════════════════════════════════════════════════════════
   SIDEBAR HOVER GLOW
   ═══════════════════════════════════════════════════════════ */

.sidebar__tab::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: var(--radius-md);
  background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.sidebar__tab:hover::after {
  opacity: 1;
}

/* ═══════════════════════════════════════════════════════════
   KEYBOARD SHORTCUT HINT
   ═══════════════════════════════════════════════════════════ */

.llm__input-hint {
  font-size: 11px;
  color: var(--faint);
  display: flex;
  align-items: center;
  gap: 4px;
  align-self: flex-end;
}

.llm__input-hint kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1px 5px;
  font-family: "Inter", sans-serif;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  line-height: 1.4;
}

/* ═══════════════════════════════════════════════════════════
   TAB CONTENT CROSSFADE
   ═══════════════════════════════════════════════════════════ */

.tab-content {
  opacity: 0;
  transition: opacity 0.2s ease;
}

.tab-content.is-active {
  opacity: 1;
}

/* ==========================================================
   AUTOCAD DARK THEME
   ========================================================== */

:root {
  /* AutoCAD Dark Palette */
  --background: #1A1A1A;
  --card: #252526;
  --border: #3F3F46;
  --foreground: #E0E0E0;
  --muted: #2D2D30;
  --muted-foreground: #9E9E9E;
  --primary: #00BFFF;
  --primary-light: rgba(0, 191, 255, 0.12);
  --sidebar-active: rgba(0, 191, 255, 0.12);
  --sidebar-active-text: #00BFFF;
  --radius-m: 0px;
  --radius-l: 0px;
  --radius-pill: 0px;
  --chat-sidebar-width: 450px;
  --topbar-height: 32px;
  --ribbon-height: 73px;

  /* AutoCAD specific */
  --bg-canvas: #0A0A14;
  --bg-darkest: #1A1A1A;
  --bg-dark: #252526;
  --bg-medium: #2D2D30;
  --bg-ribbon: #333337;
  --accent-cyan: #00BFFF;
  --accent-cyan-dim: #007ACC;
  --accent-orange: #FF8C00;
  --text-primary: #E0E0E0;
  --text-secondary: #9E9E9E;
  --text-dim: #6E6E6E;
  --border-dark: #3F3F46;
  --border-subtle: #2A2A2E;
  --status-green: #22C55E;
  --status-yellow: #FACC15;
  --error: #EF4444;
  --warning: #F59E0B;
  --success: #22C55E;

  /* Legacy aliases */
  --bg: var(--bg-darkest);
  --bg-subtle: var(--bg-medium);
  --bg-elevated: var(--bg-dark);
  --ink: var(--text-primary);
  --ink-secondary: #C0C0C0;
  --ink-tertiary: #A0A0A0;
  --faint: var(--text-secondary);
  --border-hover: #505058;
  --panel: var(--bg-dark);
  --panel-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  --panel-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.4);
  --panel-shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.5);
  --brand: var(--accent-cyan);
  --brand-hover: #00A0D6;
  --brand-soft: rgba(0, 191, 255, 0.08);
  --brand-muted: rgba(0, 191, 255, 0.3);
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-sm: 0px;
  --radius: 0px;
  --accent: var(--accent-cyan);
  --accent-fg: #fff;
  --accent-hover: #00A0D6;
  --focus-ring: 0 0 0 2px rgba(0, 191, 255, 0.3);
}

/* ─── Global Dark Theme ─────────────────────────────── */
* {
  font-family: "Arial", "SFMono-Regular", Consolas, monospace;
}

body {
  background: var(--bg-darkest);
  color: var(--text-primary);
}

.backdrop {
  background: var(--bg-darkest);
}

::selection {
  background: rgba(0, 191, 255, 0.25);
  color: #fff;
}

/* ─── Title Bar ─────────────────────────────────────── */
.warehouse-analyzer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--topbar-height);
  height: var(--topbar-height);
  flex-shrink: 0;
  padding: 0 12px;
  background: var(--bg-darkest);
  border-bottom: none;
}

.analyzer__content {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.analyzer__icon {
  display: block;
  width: 18px;
  height: 18px;
  object-fit: contain;
  flex-shrink: 0;
}

.analyzer__title {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0;
  text-transform: none;
}

.analyzer__subtitle {
  display: none;
}

.analyzer__actions {
  display: none;
}

/* ─── Ribbon Tabs Row ─────────────────────────────── */
.ribbon-tabs {
  display: flex;
  align-items: stretch;
  height: 28px;
  min-height: 28px;
  flex-shrink: 0;
  padding: 0 12px;
  background: var(--bg-medium);
  border-bottom: 1px solid var(--border-dark);
  gap: 0;
}

.ribbon-tabs__tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-top: 2px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  padding: 0 16px;
  border-radius: 0;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}

.ribbon-tabs__tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.ribbon-tabs__tab.is-active {
  background: var(--bg-ribbon);
  color: var(--accent-cyan);
  font-weight: 600;
  border-top-color: var(--accent-cyan);
  box-shadow: none;
}

/* Legacy workspace-switcher (backward compat) */
.workspace-switcher { display: none; }
.workspace-switcher__tab { display: none; }

/* ─── Sidebar (hidden in AutoCAD mode — tabs are in title bar) ── */
.sidebar {
  width: 0;
  min-width: 0;
  max-width: 0;
  padding: 0;
  border: none;
  overflow: hidden;
  display: none;
}

/* ─── Main Layout ───────────────────────────────────── */
.app-layout {
  background: var(--bg-darkest);
  min-height: 100vh;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.main-content {
  display: flex;
  flex: 1;
  height: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--bg-darkest);
  position: relative;
}

.right-panel {
  order: 2;
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: transparent;
  display: flex;
  flex-direction: column;
}

.tab-content {
  order: 1;
  width: var(--chat-sidebar-width);
  max-width: var(--chat-sidebar-width);
  min-width: var(--chat-sidebar-width);
  height: 100%;
  transition:
    width 220ms ease,
    max-width 220ms ease,
    min-width 220ms ease,
    opacity 220ms ease;
}

/* ─── Chat / AI Panel (left sidebar) ────────────────── */
.chat-panel {
  border-left: none;
  border-right: 1px solid var(--border-dark);
  background: var(--bg-dark);
  height: 100%;
  min-height: 0;
}

.chat-panel__header {
  min-height: 44px;
  height: 44px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-medium);
  border-bottom: 1px solid var(--border-dark);
  flex-shrink: 0;
}

.chat-panel__header-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-panel__header-icon {
  font-size: 14px;
  line-height: 1;
}

.chat-panel__header-icon--cyan {
  color: var(--accent-cyan);
}

.chat-panel__header h2 {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.chat-panel__toggle {
  width: 24px;
  height: 24px;
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-dark);
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 120ms ease;
}

.chat-panel__toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: var(--bg-medium);
}

.chat-panel__toggle .bi {
  font-size: 14px;
  line-height: 1;
}

.main-content.chat-collapsed .tab-content {
  width: 0;
  min-width: 0;
  max-width: 0;
  opacity: 0;
  pointer-events: none;
}

.main-content.chat-collapsed .chat-panel {
  border-right: none;
}

.chat-sidebar-open {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 20;
  display: none;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border-dark);
  background: var(--bg-dark);
  color: var(--accent-cyan);
  border-radius: 0;
  padding: 6px 10px;
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  box-shadow: var(--panel-shadow-lg);
}

.chat-sidebar-open .bi {
  font-size: 14px;
  line-height: 1;
}

.chat-sidebar-open.is-visible {
  display: inline-flex;
}

.chat-panel__body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
}

/* ─── LLM Chat Dark Theme ──────────────────────────── */
.llm {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

.llm__chat,
.llm__agent {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

.llm[data-mode="chat"] .llm__agent { display: none; }
.llm[data-mode="agent"] .llm__chat { display: flex; }
.llm[data-mode="agent"] .llm__agent { order: 0; flex: 0 0 auto; }
.llm[data-mode="agent"] .llm__chat { order: 1; }

.llm__modes {
  margin-bottom: 8px;
  border: 1px solid var(--border-dark);
  background: var(--bg-medium);
  border-radius: 0;
}

.llm__modes .button {
  border-radius: 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  background: transparent;
}

.llm__modes .button:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.llm__modes [aria-pressed="true"] {
  background: var(--bg-dark) !important;
  color: var(--accent-cyan) !important;
  box-shadow: none;
}

.llm__modes .button.is-hidden { display: none; }

.llm__chat-log {
  border: none;
  background: transparent;
  border-radius: 0;
  padding: 0 0 8px;
  height: auto;
  max-height: none;
  min-height: 0;
  flex: 1;
}

.llm__bubble {
  border-radius: 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
}

.llm__bubble--assistant {
  background: var(--bg-medium);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 0;
  animation: none;
}

.llm__bubble--user {
  background: var(--accent-cyan-dim);
  color: #fff;
  border-radius: 0;
  animation: none;
}

.llm__bubble--system {
  color: var(--text-dim);
}

.llm__bubble code {
  background: var(--bg-darkest);
  border-color: var(--border-dark);
  color: var(--accent-cyan);
}

.llm__bubble pre {
  background: #0D1117;
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.llm__chat-input {
  margin-top: 8px;
  border-top: 1px solid var(--border-dark);
  padding-top: 8px;
}

.llm__chat-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.llm__input {
  min-height: 36px;
  height: 36px;
  border-radius: 0;
  border: 1px solid var(--border-dark);
  background: var(--bg-darkest);
  color: var(--text-primary);
  padding: 8px 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
}

.llm__input::placeholder {
  color: var(--text-dim);
}

.llm__input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 1px rgba(0, 191, 255, 0.2);
}

.llm__chat-input .button--send {
  width: 36px;
  height: 36px;
  min-width: 36px;
  padding: 0;
  border-radius: 0;
  font-size: 0;
  background: var(--accent-cyan);
  border: none;
}

.llm__chat-input .button--send:hover:not(:disabled) {
  background: var(--accent-cyan-dim);
}

.llm__chat-input .button--send .bi {
  font-size: 16px;
  color: #fff;
}

.llm__chat-input .llm__chat-action-button {
  min-height: 32px;
  height: 32px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  color: var(--text-secondary);
  border-radius: 0;
}

.llm__chat-input .llm__chat-stop-button {
  color: var(--error);
}

.llm__chat-input .llm__chat-stop-button:hover:not(:disabled) {
  color: #fff;
  background: var(--error);
  border-color: var(--error);
}

.llm__input-hint { display: none; }

/* ─── Suggestions ──────────────────────────────────── */
.llm__suggestion {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
  color: var(--text-secondary);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
}

.llm__suggestion:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 191, 255, 0.06);
}

/* ─── Agent Mode Dark ──────────────────────────────── */
.agent-mode {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  gap: 10px;
}

.agent-mode__form {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
  padding: 12px;
}

.agent-mode__input {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-darkest);
  color: var(--text-primary);
  font-family: "JetBrains Mono", monospace;
  margin-bottom: 10px;
}

.agent-mode__field-label {
  color: var(--text-secondary);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 10px;
}

.agent-mode__result {
  display: none;
  border-radius: 0;
  border: 1px solid var(--border-dark);
  background: var(--bg-medium);
  color: var(--text-primary);
}

.agent-mode__result.is-visible { display: block; }

.agent-mode__result[data-state="success"] {
  border-color: rgba(0, 191, 255, 0.4);
  background: rgba(0, 191, 255, 0.06);
}

.agent-mode__result[data-state="error"] {
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.06);
}

.agent-mode__result[data-state="loading"] {
  border-color: rgba(0, 191, 255, 0.3);
  background: rgba(0, 191, 255, 0.04);
}

.agent-mode__decision {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-dark);
}

.agent-mode__decision-btn {
  border-radius: 0;
  border: 1px solid var(--border-dark);
  background: var(--bg-medium);
  color: var(--text-primary);
}

.agent-mode__decision-btn--yes {
  border-color: rgba(34, 197, 94, 0.45);
  color: var(--status-green);
}

.agent-mode__decision-btn--no {
  border-color: var(--border-dark);
  color: var(--text-secondary);
}

/* ─── Analyzer Panel Dark ─────────────────────────── */
.analyzer-panel {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg-darkest);
}

/* ─── Layout Panel Dark ───────────────────────────── */
.layout-panel {
  background: transparent;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.layout-panel__header {
  display: none;
}

.layout-panel__header h2 {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  font-size: 10px;
  font-weight: 600;
}

.layout-panel__body {
  padding: 0;
  gap: 0;
  min-height: 0;
  overflow: hidden;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.layout-summary { display: none; }

/* ─── Canvas Workspace Dark ──────────────────────── */
.canvas-workspace {
  display: flex;
  flex-direction: column;
  gap: 0;
  align-items: stretch;
  padding: 0;
  min-height: 0;
  flex: 1;
}

/* ─── Ribbon Strip (tool rail becomes ribbon) ───── */
.canvas-tool-rail {
  width: 100%;
  min-height: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--border-dark);
  padding: 4px 8px;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 0;
  background: var(--bg-ribbon);
  box-shadow: none;
}

.canvas-tool-button {
  width: auto;
  min-width: 48px;
  height: auto;
  border-radius: 0;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 4px 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 120ms ease;
}

.canvas-tool-button:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: transparent;
}

.canvas-tool-button[aria-pressed="true"],
.canvas-tool-button.is-active {
  background: rgba(0, 191, 255, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 191, 255, 0.3);
  box-shadow: none;
}

.canvas-tool-button .bi {
  font-size: 18px;
  line-height: 1;
}

/* ─── Ribbon Group Divider ──────────────────────── */
.ribbon-divider {
  width: 1px;
  align-self: stretch;
  margin: 8px 6px;
  background: var(--border-dark);
}

.ribbon-group-label {
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 8px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  pointer-events: none;
}

.ribbon-group {
  position: relative;
  display: flex;
  align-items: stretch;
  gap: 2px;
  padding-bottom: 12px;
}

/* ─── Ribbon Input Tool (inline dimension fields in toolbar) ─── */
.ribbon-input-tool {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
}
.ribbon-input-tool label {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}
.ribbon-input-tool input {
  width: 52px;
  height: 26px;
  padding: 2px 6px;
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-darkest);
  color: var(--text-primary);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  text-align: center;
}
.ribbon-input-tool input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 1px rgba(0, 191, 255, 0.2);
  outline: none;
}
.ribbon-input-tool__unit {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── Component Palette Dark ────────────────────── */
.canvas-stage {
  border: none;
  border-radius: 0;
  overflow: hidden;
  background: var(--bg-darkest);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.component-palette {
  display: none; /* Merged into ribbon */
}

.canvas-stage__hud {
  display: none; /* Moved to status bar */
}

/* ─── Canvas Viewer Dark ────────────────────────── */
.viewer {
  background: var(--bg-canvas);
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  min-height: 0;
  flex: 1;
  position: relative;
  overflow: hidden;
}

#layoutCanvas {
  background: var(--bg-canvas);
  border-radius: 0;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

/* ─── Status Bar (AutoCAD style) ─────────────────── */
.layout-status-bar {
  height: 24px;
  margin: 0;
  padding: 0 12px;
  border: none;
  border-top: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.layout-status-bar__left {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.layout-status-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.layout-status-item__label {
  font-size: 10px;
  font-family: "JetBrains Mono", monospace;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.layout-status-item__value {
  font-size: 10px;
  font-family: "JetBrains Mono", monospace;
  color: var(--accent-cyan);
  font-weight: 600;
}

.layout-status-bar__right {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0;
}

/* Status bar badges (SNAP, GRID, ORTHO) */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 9px;
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border: 1px solid var(--border-dark);
  background: var(--bg-dark);
  cursor: pointer;
  transition: all 120ms ease;
}

.status-badge:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.status-badge.is-active {
  color: #fff;
  border-color: var(--accent-cyan-dim);
  background: var(--accent-cyan-dim);
}

.metrics { display: none !important; }

/* ─── Canvas Header (tab bar + inline metrics) ──── */
.canvas-header {
  display: flex;
  align-items: center;
  height: 44px;
  min-height: 44px;
  background: var(--bg-medium);
  border-bottom: 1px solid var(--border-dark);
  padding: 0 8px;
  gap: 0;
}
.canvas-header__tab {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 100%;
  padding: 0 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}
.canvas-header__tab:hover {
  color: var(--text-primary);
}
.canvas-header__tab.is-active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}
.canvas-header__metrics {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
  padding-right: 4px;
}
.canvas-header__metric {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.canvas-header__metric-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 400;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.canvas-header__metric-value {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* ─── Status Bar Coords & Zoom ──────────────────── */
.layout-status-bar__coords {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 0.04em;
  white-space: pre;
}
.layout-status-bar__measure {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-left: 16px;
  white-space: nowrap;
}
.layout-status-bar__zoom {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-left: 16px;
}

/* ─── AI Chat Avatar ────────────────────────────── */
.llm__msg-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.llm__msg-row--user {
  flex-direction: row-reverse;
}
.llm__avatar {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-cyan-dim);
  color: #fff;
  font-size: 12px;
  border-radius: 2px;
  margin-top: 2px;
}
.llm__msg-row .llm__bubble {
  flex: 1;
  min-width: 0;
}

/* ─── Buttons Dark ──────────────────────────────── */
.button {
  border-radius: 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--bg-medium);
  color: var(--text-primary);
  border: 1px solid var(--border-dark);
}

.button:hover:not(:disabled) {
  background: var(--bg-ribbon);
  border-color: var(--border-hover);
  transform: none;
  box-shadow: none;
}

.button--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-dark);
}

.button--ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: none;
  box-shadow: none;
}

.button--emphasis {
  background: var(--accent-cyan);
  color: #000;
  border: 1px solid transparent;
}

.button--emphasis:hover:not(:disabled) {
  background: var(--accent-cyan-dim);
  color: #fff;
  transform: none;
  box-shadow: none;
}

.button--danger {
  background: var(--error);
  color: #fff;
}

.button--small {
  padding: 4px 10px;
  font-size: 10px;
}

/* ─── Forms Dark ────────────────────────────────── */
select,
input[type="number"],
input[type="text"],
textarea {
  background-color: var(--bg-darkest);
  border: 1px solid var(--border-dark);
  border-radius: 0;
  color: var(--text-primary);
  font-family: "JetBrains Mono", monospace;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 1px rgba(0, 191, 255, 0.2);
  animation: none;
}

input[type="checkbox"]:checked {
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* ─── Welcome Card Dark ─────────────────────────── */
.welcome-card {
  padding: 32px 24px;
}

.welcome-card__illustration {
  display: none;
}

.welcome-card__title {
  color: var(--accent-cyan);
  font-size: 16px;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.04em;
}

.welcome-card__subtitle {
  color: var(--text-secondary);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
}

.welcome-card__action {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
  color: var(--text-secondary);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
}

.welcome-card__action:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 191, 255, 0.06);
  color: var(--accent-cyan);
  transform: none;
  box-shadow: none;
}

.welcome-card__action-icon {
  border-radius: 0;
  background: var(--bg-darkest);
  color: var(--accent-cyan);
}

/* ─── Upload Dropzone Dark ──────────────────────── */
.upload-dropzone {
  border: 2px dashed var(--border-dark);
  border-radius: 0;
  background: var(--bg-darkest);
}

.upload-dropzone:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 191, 255, 0.04);
}

.upload-dropzone__icon {
  color: var(--text-dim);
}

.upload-dropzone:hover .upload-dropzone__icon {
  color: var(--accent-cyan);
}

.upload-dropzone__text {
  color: var(--text-secondary);
}

.upload-dropzone__text strong {
  color: var(--accent-cyan);
}

/* ─── Vision Uploader Dark ──────────────────────── */
.vision-uploader {
  background: var(--bg-dark);
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.vision-uploader__header h3 {
  color: var(--text-primary);
}

.vision-uploader__preview {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-darkest);
}

/* ─── Status Messages Dark ──────────────────────── */
.status {
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0;
  color: var(--text-primary);
  box-shadow: none;
}

.status::before,
.status::after {
  display: none;
}

.status:hover {
  box-shadow: none;
  transform: none;
}

.status--success {
  background: rgba(34, 197, 94, 0.06);
  border-color: var(--border-dark);
  border-left-color: var(--status-green);
  color: var(--status-green);
}

.status--error {
  background: rgba(239, 68, 68, 0.06);
  border-color: var(--border-dark);
  border-left-color: var(--error);
  color: #FCA5A5;
}

.status--warning {
  background: rgba(245, 158, 11, 0.06);
  border-color: var(--border-dark);
  border-left-color: var(--status-yellow);
  color: var(--status-yellow);
}

.status--loading {
  background: rgba(0, 191, 255, 0.06);
  border-color: var(--border-dark);
  border-left-color: var(--accent-cyan);
  color: var(--text-primary);
  animation: none;
}

/* ─── Floorplan Prompt Dark ──────────────────────── */
.floorplan-prompt {
  background: rgba(10, 10, 20, 0.95);
  border-radius: 0;
  border: 1px solid var(--border-dark);
}

.floorplan-prompt__options button {
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  border-radius: 0;
  color: var(--text-primary);
}

.floorplan-prompt__options button:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ─── Placement Prompt Dark ──────────────────────── */
.placement-prompt {
  background: rgba(10, 10, 20, 0.95);
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.placement-prompt__title {
  color: var(--text-dim);
}

.placement-prompt__text {
  color: var(--text-primary);
}

.placement-prompt__item {
  background: var(--bg-medium);
  border: 1px solid var(--border-subtle);
  border-radius: 0;
}

/* ─── Progress & Todo Dark ──────────────────────── */
.llm__progress {
  background: var(--bg-darkest);
  border: 1px solid var(--border-dark);
  border-radius: 0;
  color: var(--text-secondary);
}

.llm__progress::before {
  background: var(--accent-cyan);
}

.llm__todo {
  background: var(--bg-dark);
  border: 1px solid var(--border-dark);
  border-radius: 0;
  color: var(--text-primary);
}

.llm__todo-title {
  color: var(--text-dim);
}

.llm__todo-check {
  border: 1.5px solid var(--border-hover);
  border-radius: 0;
}

.llm__todo-item.is-done .llm__todo-check {
  border-color: var(--status-green);
  background: var(--status-green);
}

/* ─── Metric Pills Dark ──────────────────────────── */
.llm__metric-pill {
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.llm__metric-pill-label {
  color: var(--text-dim);
}

.llm__metric-pill-value {
  color: var(--text-primary);
}

.llm__table-wrap {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
}

.llm__table thead th {
  background: var(--bg-darkest);
  color: var(--text-dim);
}

.llm__table tbody td {
  background: var(--bg-medium);
  color: var(--text-primary);
  border-bottom-color: var(--border-subtle);
}

.llm__table th + th,
.llm__table td + td {
  border-left-color: var(--border-subtle);
}

.llm__table tbody tr:nth-child(even) td {
  background: var(--bg-dark);
}

/* ─── Feedback Buttons Dark ──────────────────────── */
.llm__feedback-btn {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
  color: var(--text-dim);
}

.llm__feedback-btn:hover:not(:disabled) {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-ribbon);
}

.llm__feedback-btn.is-selected {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 191, 255, 0.08);
}

/* ─── Tabs Dark ──────────────────────────────────── */
.tabs {
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.tab {
  border-radius: 0;
  color: var(--text-dim);
}

.tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.tab.active {
  background: var(--bg-dark);
  color: var(--accent-cyan);
  border-color: var(--border-dark);
}

/* ─── Projects Panel Dark ─────────────────────────── */
.projects-segmented {
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.projects-segmented__tab {
  border-radius: 0;
  color: var(--text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.projects-segmented__tab.is-active {
  background: var(--bg-dark);
  color: var(--accent-cyan);
}

.project-card {
  background: var(--bg-medium);
  border: 1px solid var(--border-dark);
  border-radius: 0;
}

.project-card:hover {
  border-color: var(--border-hover);
}

.project-card__empty {
  background: var(--bg-darkest);
  border: 1px dashed var(--border-dark);
  border-radius: 0;
  color: var(--text-dim);
}

/* ─── Settings Dark ──────────────────────────────── */
.settings-section h3 {
  color: var(--text-dim);
  border-bottom-color: var(--border-dark);
}

.settings-row {
  border-bottom-color: var(--border-subtle);
}

.settings-row label {
  color: var(--text-secondary);
}

/* ─── Toast Dark ─────────────────────────────────── */
.app-toast {
  background: rgba(0, 191, 255, 0.9);
  color: #000;
  border: 1px solid var(--accent-cyan);
  border-radius: 0;
}

/* ─── Scrollbar Dark ──────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-darkest);
}

::-webkit-scrollbar-thumb {
  background: var(--border-dark);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ─── Override color declarations ──────────────── */
.vision-uploader__header p,
.llm__modes .button,
.canvas-tool-button,
.component-palette__button,
.component-palette__button:disabled:hover,
.placement-prompt__list,
.metrics__row span,
.tab,
.llm__progress,
.welcome-card__subtitle,
.upload-dropzone__text,
.llm__input-hint kbd {
  color: var(--text-secondary);
}

/* ─── Rack Builder Dark ──────────────────────────── */
.rack-builder-panel {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-darkest);
  position: relative;
}

.rack-builder-panel__header {
  min-height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border-dark);
  background: var(--bg-medium);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.rack-builder-panel__header h2 {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rack-builder-panel__title-icon {
  font-size: 16px;
  line-height: 1;
  color: var(--text-dim);
  flex-shrink: 0;
}

.rack-builder-panel__actions {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#rackBuilderAddShelf {
  background: var(--accent-cyan);
  color: #000;
  border: none;
  border-radius: 0;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: none;
}

#rackBuilderAddShelf:hover:not(:disabled) {
  background: var(--accent-cyan-dim);
  color: #fff;
  box-shadow: none;
  transform: none;
}

.rack-add-popover {
  position: absolute;
  top: 0;
  right: 16px;
  z-index: 50;
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-dark);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  padding: 12px;
}

.canvas-header--rack + .rack-add-popover {
  top: 28px;
}

.rack-add-popover__label {
  color: var(--text-dim);
}

.rack-add-popover__input {
  background: var(--bg-darkest);
  border: 1px solid var(--border-dark);
  color: var(--text-primary);
  border-radius: 0;
}

.rack-builder-panel__body {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(200px, 260px) 1fr;
  gap: 0;
  padding: 0;
}

.rack-builder-sidebar {
  min-height: 0;
  background: var(--bg-dark);
  border: none;
  border-right: 1px solid var(--border-dark);
  border-radius: 0;
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 12px;
  box-shadow: none;
  overflow-y: auto;
}

.rack-builder-sidebar__section h3 {
  color: var(--text-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.rack-builder-sidebar__section--compliance {
  border: 1px solid var(--border-dark);
  background: var(--bg-darkest);
  padding: 10px;
  display: grid;
  gap: 8px;
}

.rack-compliance-field {
  display: grid;
  gap: 4px;
}

.rack-compliance-field > span {
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.rack-compliance-input {
  width: 100%;
  height: 30px;
  border: 1px solid var(--border-dark);
  background: var(--bg-dark);
  color: var(--text-primary);
  font-size: 12px;
  padding: 4px 8px;
}

.rack-compliance-summary {
  border: 1px solid var(--border-dark);
  background: var(--bg-medium);
  padding: 8px;
  display: grid;
  gap: 5px;
  font-size: 10px;
  line-height: 1.35;
}

.rack-compliance-summary__row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--text-dim);
}

.rack-compliance-summary__value {
  color: var(--text-primary);
}

.rack-compliance-summary__warning {
  color: #fca5a5;
}

.rack-compliance-summary__ok {
  color: #86efac;
}

.rack-dimension-field span {
  font-size: 10px;
  color: var(--text-dim);
}

.rack-dimension-field input {
  height: 30px;
  padding: 4px 8px;
  border-radius: 0;
  border: 1px solid var(--border-dark);
  background: var(--bg-darkest);
  color: var(--text-primary);
  font-size: 12px;
}

.rack-view-toggle {
  background: var(--bg-medium);
  border-radius: 0;
  border: 1px solid var(--border-dark);
}

.rack-view-toggle__button {
  border-radius: 0;
  color: var(--text-dim);
  font-family: "JetBrains Mono", monospace;
}

.rack-view-toggle__button.is-active {
  border-color: var(--border-dark);
  background: var(--bg-dark);
  color: var(--accent-cyan);
}

.rack-builder-sidebar__hint {
  color: var(--text-dim);
  font-size: 11px;
}

.rack-shelf-list {
  border: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-darkest);
}

.rack-shelf-list__empty {
  color: var(--text-dim);
}

.rack-shelf-item {
  border: 1px solid var(--border-subtle);
  border-radius: 0;
  background: var(--bg-medium);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 8px;
}

.rack-shelf-item:hover {
  border-color: var(--border-dark);
  background: var(--bg-ribbon);
  box-shadow: none;
}

.rack-shelf-item__handle {
  border-radius: 0;
  background: var(--bg-dark);
  border: 1px solid var(--border-dark);
  color: var(--text-dim);
}

.rack-shelf-item__title {
  color: var(--text-primary);
}

.rack-shelf-item__height {
  color: var(--text-dim);
}

.rack-shelf-item__details {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.rack-shelf-item__capacity {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  align-items: center;
}

.rack-shelf-item__capacity-input {
  width: 100%;
  height: 26px;
  border: 1px solid var(--border-dark);
  background: var(--bg-dark);
  color: var(--text-primary);
  padding: 2px 6px;
  font-size: 11px;
}

.rack-shelf-item__capacity-label {
  color: var(--text-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.rack-shelf-item__height::before {
  background: var(--border-dark);
}

/* ─── Rack Builder Stage (fill stage-wrap) ───────── */
.rack-builder-stage-wrap {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
  overflow: hidden;
}

.rack-builder-stage {
  border: none;
  border-radius: 0;
  background: var(--bg-canvas);
  box-shadow: none;
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
}

#rackBuilderCanvas {
  background: var(--bg-canvas);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.rack-builder-3d-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.rack-builder-3d-container canvas {
  border-radius: 0;
  width: 100% !important;
  height: 100% !important;
}

/* ─── Rack View Mode Bar (above canvas) ──────────── */
.rack-view-bar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  height: 34px;
  min-height: 34px;
  padding: 0 12px;
  background: var(--bg-medium);
  border-bottom: 1px solid var(--border-dark);
}

.rack-view-bar__toggle {
  display: inline-flex;
  border: 1px solid var(--border-dark);
  overflow: hidden;
}

.rack-view-bar__btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  background: var(--bg-dark);
  border: none;
  cursor: pointer;
  transition: all 150ms ease;
}

.rack-view-bar__btn:not(:first-child) {
  border-left: 1px solid var(--border-dark);
}

.rack-view-bar__btn:hover {
  color: var(--text-primary);
  background: var(--bg-ribbon);
}

.rack-view-bar__btn.is-active {
  color: var(--accent-cyan);
  background: rgba(0, 191, 255, 0.1);
  box-shadow: inset 0 -2px 0 var(--accent-cyan);
}

.rack-view-bar__btn .bi {
  font-size: 13px;
  line-height: 1;
}

.rack-view-bar__action {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border: 1px solid var(--border-dark);
  color: var(--text-dim);
  background: var(--bg-dark);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 150ms ease;
}

.rack-view-bar__action:hover {
  color: var(--text-primary);
  background: var(--bg-ribbon);
}

.rack-view-bar__action[aria-pressed="true"] {
  color: var(--accent-cyan);
  background: rgba(0, 191, 255, 0.1);
  border-color: var(--accent-cyan);
}

.rack-view-bar__action .bi {
  font-size: 13px;
  line-height: 1;
}

.rack-view-bar__hint {
  flex: 1 1 auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--text-dim);
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rack-builder-status {
  border: none;
  border-top: 1px solid var(--border-dark);
  border-radius: 0;
  background: var(--bg-medium);
  color: var(--text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
}

.rack-builder-status::before {
  background: var(--text-dim);
}

/* ─── Responsive ──────────────────────────────────── */
@media (max-width: 1100px) {
  body {
    flex-direction: column;
  }

  .sidebar {
    display: none;
  }

  .main-content {
    flex-direction: column;
    overflow: auto;
    height: auto;
  }

  .tab-content {
    width: 100%;
    max-width: none;
    min-width: 0;
    height: auto;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--border-dark);
    order: 1;
  }

  .main-content.chat-collapsed .tab-content {
    width: 100%;
    max-width: none;
    min-width: 0;
    opacity: 1;
    pointer-events: auto;
  }

  .right-panel {
    order: 2;
    min-height: 60vh;
  }

  .chat-panel__toggle,
  .chat-sidebar-open,
  .properties-sidebar-open {
    display: none !important;
  }

  .warehouse-analyzer {
    padding: 0 8px;
  }

  .ribbon-tabs {
    flex-wrap: wrap;
  }

  .rack-builder-panel__body {
    grid-template-columns: 1fr;
  }

  .rack-dimensions-grid {
    grid-template-columns: 1fr;
  }

  #rackBuilderCanvas {
    min-height: 360px;
  }
}

/* ═══════════════════════════════════════════════════════════
   PROPERTIES PANEL (right overlay)
   ═══════════════════════════════════════════════════════════ */
.properties-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 240px;
  min-width: 240px;
  max-width: 240px;
  height: auto;
  background: var(--bg-dark);
  border-left: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 24;
  box-shadow: var(--panel-shadow-lg);
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 220ms ease, opacity 220ms ease;
}

.properties-panel.is-visible {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.properties-sidebar-open {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 25;
  display: none;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border-dark);
  background: var(--bg-dark);
  color: var(--accent-cyan);
  border-radius: 0;
  padding: 6px 10px;
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  box-shadow: var(--panel-shadow-lg);
}

.properties-sidebar-open .bi {
  font-size: 14px;
  line-height: 1;
}

.properties-sidebar-open:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: var(--bg-medium);
}

.properties-sidebar-open.is-visible {
  display: inline-flex;
}

.properties-panel__header {
  min-height: 36px;
  height: 36px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-medium);
  border-bottom: 1px solid var(--border-dark);
  flex-shrink: 0;
  gap: 8px;
}

.properties-panel__header-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.properties-panel__header-icon {
  font-size: 14px;
  line-height: 1;
  color: var(--text-secondary);
}

.properties-panel__title {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-primary);
}

.properties-panel__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0;
  font-size: 12px;
  line-height: 1;
  border-radius: 2px;
  transition: color 120ms ease, background 120ms ease;
}

.properties-panel__close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.properties-panel__body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.properties-panel__body::-webkit-scrollbar {
  width: 4px;
}
.properties-panel__body::-webkit-scrollbar-track {
  background: transparent;
}
.properties-panel__body::-webkit-scrollbar-thumb {
  background: var(--border-dark);
  border-radius: 2px;
}

.properties-panel__section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.properties-panel__section-title {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.properties-panel__section-title--accent {
  color: var(--accent-cyan);
}

.properties-panel__divider {
  width: 100%;
  height: 1px;
  background: var(--border-dark);
}

.properties-panel__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.properties-panel__label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-dim);
}

.properties-panel__value {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-primary);
}

.properties-panel__value--bold {
  font-weight: 600;
}

.properties-panel__value--green {
  font-weight: 700;
  color: var(--status-green);
}

/* ─── File Sidebar Menu ───────────────────────────── */
.assistant-file-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.assistant-file-menu__button {
  width: 100%;
  justify-content: flex-start;
  gap: 8px;
}

/* ─── Floorplan Empty Upload State ────────────────── */
.vision-uploader__actions {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.vision-uploader--empty {
  min-height: min(72vh, 760px);
  justify-content: center;
}

.vision-uploader--empty .vision-uploader__header {
  width: 100%;
  justify-content: center;
}

.vision-uploader--empty .vision-uploader__controls {
  width: min(680px, 100%);
  justify-content: center;
}

.vision-uploader--empty .upload-dropzone {
  width: 100%;
  min-height: 280px;
}