/* ══════════════════════════════════════════════════════════
   DESIGN TOKENS
══════════════════════════════════════════════════════════ */
:root {
  --font: 'Inter',  sans-serif;
  --canvas-font: 'IBM Plex Sans',  sans-serif;
  --canvas-font-size: 18px;
  --font-ink: 'Caveat', 'Kalam', 'Architects Daughter', 'Comic Sans MS', cursive;

  /* Chrome */
  --chrome-bg: #111827;
  --chrome-surface: #1f2937;
  --chrome-border: rgba(255,255,255,0.08);
  --chrome-border-strong: rgba(255,255,255,0.15);

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent */
  --accent: #4f6bed;
  --accent-hover: #6b84f5;
  --accent-light: rgba(79,107,237,0.15);

  /* Type colors */
  --goal-fill: #ffffff;
  --goal-stroke: #334155;
  --goal-text: #0f172a;
  --asset-fill: #2664A0;
  --asset-stroke: #1A4570;
  --asset-text: #ffffff;
  --threat-fill: #DC322F;
  --threat-stroke: #991B1B;
  --threat-text: #ffffff;

  /* Canvas */
  --canvas-bg: #f0f4f8;
  --canvas-grid: rgba(99,120,160,0.15);
  --canvas-axis: #475569;

  /* Toolbar */
  --toolbar-h: 52px;
  --status-h: 26px;
  --sidebar-w: 250px;

  /* Radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;

  /* Shadow */
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);

  /* Transitions */
  --t: 0.15s ease;
  --t-slow: 0.3s ease;
}

/* ══════════════════════════════════════════════════════════
   RESET & BASE
══════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  background: var(--chrome-bg);
  color: var(--text-primary);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

button {
  font-family: var(--font);
  font-size: 12px;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--chrome-border-strong);
  border-radius: var(--r-sm);
  padding: 7px 10px;
  width: 100%;
  outline: none;
  transition: border-color var(--t);
  resize: vertical;
}

input:focus, textarea:focus {
  border-color: var(--accent);
  background: rgba(79,107,237,0.08);
}

label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ══════════════════════════════════════════════════════════
   APP LAYOUT
══════════════════════════════════════════════════════════ */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

#main-layout {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* ══════════════════════════════════════════════════════════
   TOOLBAR
══════════════════════════════════════════════════════════ */
#toolbar {
  height: var(--toolbar-h);
  background: var(--chrome-bg);
  border-bottom: 1px solid var(--chrome-border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 8px;
  flex-shrink: 0;
  z-index: 100;
  box-shadow: 0 1px 0 var(--chrome-border);
}

.toolbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-right: 8px;
  flex-shrink: 0;
}

.brand-icon {
  width: 24px;
  height: 24px;
}

.toolbar-groups {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  overflow: visible;
  scrollbar-width: none;
}
.toolbar-groups::-webkit-scrollbar { display: none; }

.tool-group {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.toolbar-divider {
  width: 1px;
  height: 28px;
  background: var(--chrome-border-strong);
  margin: 0 4px;
  flex-shrink: 0;
}

/* ── Tool Buttons ── */
.tool-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 32px;
  padding: 0 10px;
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  transition: background var(--t), color var(--t);
  white-space: nowrap;
  position: relative;
}

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

.tool-btn:hover {
  background: rgba(255,255,255,0.07);
  color: var(--text-primary);
}

.tool-btn.active {
  background: var(--accent-light);
  color: var(--accent-hover);
}

.tool-btn.icon-only {
  width: 32px;
  padding: 0;
  justify-content: center;
}

.tool-btn:disabled {
  opacity: 0.35;
  pointer-events: none;
}

.tool-btn.accent {
  background: var(--accent);
  color: white;
  font-weight: 600;
}
.tool-btn.accent:hover {
  background: var(--accent-hover);
}

/* Add element buttons */
.tool-btn.add-btn {
  gap: 6px;
}
.type-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.zoom-display {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  min-width: 36px;
  text-align: center;
  letter-spacing: 0.02em;
}

/* ── Dropdown ── */
.dropdown-wrap {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: #1e2d3d;
  border: 1px solid var(--chrome-border-strong);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  min-width: 160px;
  z-index: 200;
  overflow: hidden;
  animation: fadeDown 0.12s ease;
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--text-primary);
  transition: background var(--t);
}
.dropdown-item:hover { background: rgba(255,255,255,0.07); }
.dropdown-item svg { width: 14px; height: 14px; opacity: 0.7; flex-shrink: 0; }

.badge {
  margin-left: auto;
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--chrome-border);
  border-radius: 3px;
  padding: 1px 5px;
}

/* ══════════════════════════════════════════════════════════
   SIDEBARS
══════════════════════════════════════════════════════════ */
.sidebar {
  width: var(--sidebar-w);
  background: var(--chrome-surface);
  border-right: 1px solid var(--chrome-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: width var(--t-slow);
}

.sidebar.collapsed { width: 36px; }
.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .sidebar-footer,
.sidebar.collapsed #viewpoints-list,
.sidebar.collapsed .properties-content {
  display: none !important;
}
.sidebar.collapsed .sidebar-header {
  padding: 10px 0;
  justify-content: center;
}

.sidebar-right {
  border-right: none;
  border-left: 1px solid var(--chrome-border);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--chrome-border);
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.sidebar-toggle-btn {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  color: var(--text-muted);
  font-size: 14px;
  transition: background var(--t), color var(--t);
}
.sidebar-toggle-btn:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }

.sidebar-footer {
  padding: 10px;
  border-top: 1px solid var(--chrome-border);
  flex-shrink: 0;
}

/* ── Viewpoints list ── */
.viewpoints-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.viewpoint-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--chrome-border);
  border-radius: var(--r-md);
  padding: 10px 10px 8px;
  cursor: pointer;
  transition: border-color var(--t), background var(--t);
  user-select: none;
}
.viewpoint-card:hover {
  border-color: var(--chrome-border-strong);
  background: rgba(255,255,255,0.07);
}
.viewpoint-card.active {
  border-color: var(--accent);
  background: var(--accent-light);
}

.vp-card-header {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 4px;
}

.vp-drag-handle {
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 1px;
  cursor: grab;
  flex-shrink: 0;
}

.vp-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  line-height: 1.3;
}
.viewpoint-card.active .vp-title {
  border-bottom: 1px dashed rgba(255, 255, 255, 0.25);
  cursor: pointer;
  padding-bottom: 2px;
  transition: border-color var(--t), background var(--t);
}
.viewpoint-card.active .vp-title:hover {
  border-bottom-color: var(--accent);
  background: rgba(255, 255, 255, 0.04);
}

.vp-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.vp-actions {
  display: flex;
  gap: 4px;
  margin-top: 8px;
}

.vp-btn {
  flex: 1;
  height: 24px;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 500;
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  transition: background var(--t), color var(--t);
}
.vp-btn:hover { background: rgba(255,255,255,0.12); color: var(--text-primary); }
.vp-btn.goto { background: var(--accent-light); color: var(--accent-hover); }
.vp-btn.goto:hover { background: rgba(79,107,237,0.25); }
.vp-btn.del:hover { background: rgba(220,50,47,0.2); color: #ff6b6b; }

.vp-annotation {
  font-size: 11px;
  line-height: 1.4;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.2);
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: var(--r-sm);
  padding: 6px 8px;
  margin-top: 6px;
  margin-bottom: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  cursor: text;
  transition: border-color var(--t), background var(--t);
}
.vp-annotation:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.3);
}

.vp-btn.active-ink,
.vp-btn.active-text {
  background: var(--accent) !important;
  color: #fff !important;
  font-weight: 600;
}
.vp-btn.active-ink:hover,
.vp-btn.active-text:hover {
  background: var(--accent-hover) !important;
}

[contenteditable="true"] {
  outline: none;
  background: rgba(255, 255, 255, 0.08) !important;
  border: 1px solid var(--accent) !important;
  border-radius: var(--r-sm);
  box-shadow: 0 0 0 2px rgba(79, 107, 237, 0.25);
  cursor: text;
}
.vp-title[contenteditable="true"] {
  padding: 2px 4px;
}

/* ── Ink options ── */
.ink-options {
  border-top: 1px solid var(--chrome-border);
  padding: 12px;
  flex-shrink: 0;
}
.ink-section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.ink-color-palette {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
  margin-bottom: 14px;
}

.ink-swatch {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--r-sm);
  border: 2px solid transparent;
  transition: transform var(--t), border-color var(--t);
}
.ink-swatch:hover { transform: scale(1.1); }
.ink-swatch.active { border-color: white; box-shadow: 0 0 0 1px rgba(255,255,255,0.5); }

.ink-width-options {
  display: flex;
  gap: 6px;
}
.ink-width-btn {
  flex: 1;
  height: 36px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--chrome-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t), border-color var(--t);
}
.ink-width-btn:hover { background: rgba(255,255,255,0.1); }
.ink-width-btn.active { border-color: var(--accent); background: var(--accent-light); }
.width-line {
  width: 60%;
  background: var(--text-primary);
  border-radius: 2px;
}

/* ══════════════════════════════════════════════════════════
   CANVAS AREA
══════════════════════════════════════════════════════════ */
#middle-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--chrome-bg);
}

#viewpoint-title-display {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--chrome-surface);
  border-bottom: 1px solid var(--chrome-border);
  padding: 10px 16px;
  flex-shrink: 0;
  animation: slideDown 0.2s ease-out;
}

#viewpoint-title-display .label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--accent);
  text-transform: uppercase;
}

#viewpoint-title-display .title-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

#viewpoint-desc-display {
  background: var(--chrome-surface);
  border-top: 1px solid var(--chrome-border);
  padding: 10px 16px;
  flex-shrink: 0;
  max-height: 80px;
  overflow-y: auto;
  animation: slideUp 0.2s ease-out;
}

#viewpoint-desc-text {
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--text-secondary);
  white-space: pre-wrap;
  max-width: 900px;
  margin: 0;
}

@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

#canvas-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--canvas-bg);
}

#map-canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
  font-family: var(--canvas-font);
}

/* cursor modes */
#canvas-wrapper.mode-select    #map-canvas { cursor: default; }
#canvas-wrapper.mode-draw      #map-canvas { cursor: crosshair; }
#canvas-wrapper.mode-ink       #map-canvas { cursor: crosshair; }
#canvas-wrapper.mode-arrow     #map-canvas { cursor: crosshair; }
#canvas-wrapper.mode-text      #map-canvas { cursor: cell; }
#canvas-wrapper.mode-pan       #map-canvas { cursor: grab; }
#canvas-wrapper.mode-panning   #map-canvas { cursor: grabbing; }
#canvas-wrapper.mode-move      #map-canvas { cursor: move; }

/* Overlays Removed */

/* ══════════════════════════════════════════════════════════
   PROPERTIES PANEL
══════════════════════════════════════════════════════════ */
.properties-content {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  color: var(--text-muted);
  padding: 24px 16px;
}
.empty-state svg { width: 40px; height: 40px; opacity: 0.3; }
.empty-state p { font-size: 12px; }
.empty-state .hint { font-size: 11px; opacity: 0.7; }

/* Properties sections */
.prop-section {
  margin-bottom: 16px;
}

.prop-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.prop-input {
  width: 100%;
  padding: 6px 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--chrome-border-strong);
  border-radius: var(--r-sm);
  color: var(--text-primary);
  font-size: 12px;
  outline: none;
  transition: border-color var(--t);
}
.prop-input:focus { border-color: var(--accent); }

.type-selector {
  display: flex;
  gap: 4px;
}
.type-btn {
  flex: 1;
  height: 28px;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 500;
  border: 1.5px solid transparent;
  transition: border-color var(--t), opacity var(--t);
  opacity: 0.5;
}
.type-btn.active { opacity: 1; }
.type-btn.goal  { background: #fff; color: #333; border-color: #ccc; }
.type-btn.goal.active  { border-color: #333; }
.type-btn.asset { background: #2664A0; color: #fff; }
.type-btn.asset.active  { border-color: #fff; }
.type-btn.threat{ background: #DC322F; color: #fff; }
.type-btn.threat.active { border-color: #fff; }

.movement-selector {
  display: flex;
  gap: 4px;
}
.movement-btn {
  flex: 1;
  height: 28px;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 500;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--chrome-border-strong);
  transition: background var(--t), border-color var(--t);
  opacity: 0.5;
}
.movement-btn.active { opacity: 1; border-color: var(--accent); background: var(--accent-light); color: var(--accent-hover); }

.prop-slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.prop-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  outline: none;
}
.prop-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}
.prop-val {
  font-size: 11px;
  color: var(--text-muted);
  min-width: 22px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Z-order section */
.zorder-row {
  display: flex;
  gap: 4px;
}
.zorder-btn {
  flex: 1;
  height: 26px;
  border-radius: var(--r-sm);
  font-size: 11px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--chrome-border);
  color: var(--text-secondary);
  transition: background var(--t), color var(--t);
}
.zorder-btn:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }

.delete-btn {
  width: 100%;
  height: 30px;
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 500;
  background: rgba(220,50,47,0.1);
  border: 1px solid rgba(220,50,47,0.3);
  color: #ff6b6b;
  transition: background var(--t), border-color var(--t);
}
.delete-btn:hover { background: rgba(220,50,47,0.2); border-color: rgba(220,50,47,0.5); }

.separator { height: 1px; background: var(--chrome-border); margin: 12px 0; }

/* Global properties (no selection) */
.map-title-input {
  font-size: 14px;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--chrome-border-strong);
  border-radius: var(--r-sm);
  padding: 7px 10px;
  width: 100%;
  color: var(--text-primary);
  outline: none;
  margin-bottom: 10px;
}
.map-title-input:focus { border-color: var(--accent); }

.axis-edit-btn {
  width: 100%;
  height: 30px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--chrome-border);
  color: var(--text-secondary);
  font-size: 12px;
  transition: background var(--t);
}
.axis-edit-btn:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }

/* ══════════════════════════════════════════════════════════
   STATUS BAR
══════════════════════════════════════════════════════════ */
#status-bar {
  height: var(--status-h);
  background: var(--chrome-bg);
  border-top: 1px solid var(--chrome-border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 20px;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}
#status-bar span { white-space: nowrap; }
#status-hint { margin-left: auto; opacity: 0.6; }

/* ══════════════════════════════════════════════════════════
   DIALOGS
══════════════════════════════════════════════════════════ */
dialog {
  position: fixed;
  inset: 0;
  width: auto;
  height: auto;
  margin: auto;
  border: none;
  background: none;
  padding: 0;
  max-width: 95vw;
}

dialog::backdrop {
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
}

.dialog-card {
  background: #1a2332;
  border: 1px solid var(--chrome-border-strong);
  border-radius: var(--r-lg);
  padding: 24px;
  min-width: 340px;
  max-width: 560px;
  box-shadow: var(--shadow-lg);
  animation: dialogIn 0.2s ease;
}

@keyframes dialogIn {
  from { opacity: 0; transform: scale(0.95) translateY(-10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.dialog-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.dialog-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.form-group { margin-bottom: 14px; }

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

/* DPI Options */
.dpi-options {
  display: flex;
  gap: 10px;
  margin-bottom: 4px;
}
.dpi-option { flex: 1; }
.dpi-option input[type=radio] { display: none; }
.dpi-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 8px;
  border: 2px solid var(--chrome-border-strong);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: border-color var(--t), background var(--t);
  gap: 2px;
}
.dpi-card:hover { border-color: var(--accent); background: var(--accent-light); }
.dpi-option input[type=radio]:checked + .dpi-card { border-color: var(--accent); background: var(--accent-light); }
.dpi-val { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.dpi-unit { font-size: 10px; color: var(--text-muted); }
.dpi-name { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }

/* Axis dialog grid */
.axis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 4px;
}

/* ══════════════════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════════════════ */
.btn {
  height: 34px;
  padding: 0 16px;
  border-radius: var(--r-sm);
  font-size: 13px;
  font-weight: 500;
  transition: background var(--t), border-color var(--t);
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  border-color: var(--chrome-border-strong);
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.btn-danger {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
}
.btn-danger:hover {
  background: #dc2626;
}
.full-width { width: 100%; }

/* ══════════════════════════════════════════════════════════
   SCROLLBAR STYLING
══════════════════════════════════════════════════════════ */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ══════════════════════════════════════════════════════════
   VIEWPOINT CARD DRAG ANIMATION
══════════════════════════════════════════════════════════ */
.viewpoint-card.dragging {
  opacity: 0.5;
  border-style: dashed;
}
.viewpoint-card.drag-over-above {
  position: relative;
}
.viewpoint-card.drag-over-above::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent, #4f6bed);
  border-radius: 2px;
  box-shadow: 0 0 6px var(--accent, #4f6bed);
  z-index: 10;
}
.viewpoint-card.drag-over-below {
  position: relative;
}
.viewpoint-card.drag-over-below::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent, #4f6bed);
  border-radius: 2px;
  box-shadow: 0 0 6px var(--accent, #4f6bed);
  z-index: 10;
}

/* ══════════════════════════════════════════════════════════
   TOAST NOTIFICATIONS
   ══════════════════════════════════════════════════════════ */
#toast-container {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  background: rgba(220, 50, 47, 0.25);
  border: 1px solid rgba(220, 50, 47, 0.45);
  color: #fca5a5;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 20px;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 320px;
  max-width: 450px;
  animation: toast-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards, toast-out 0.3s cubic-bezier(0.16, 1, 0.3, 1) 4.7s forwards;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0; transform: scale(0.95); }
}