/* ============================================================
   Renzo Chart Studio — Visual Editor Styles
   ============================================================ */

/* Overlay */
.cs-overlay {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg, #0a0e1a); color: var(--text, #e2e8f0);
  font-family: Inter, system-ui, sans-serif;
  display: flex; flex-direction: column;
  opacity: 0; transform: scale(0.98);
  transition: opacity 0.2s, transform 0.25s cubic-bezier(0.32, 0.72, 0, 1);
}
.cs-overlay.cs-open { opacity: 1; transform: scale(1); }
[data-theme="light"] .cs-overlay { background: #f8fafc; color: #1e293b; }

/* Shell */
.cs-shell { display: flex; flex-direction: column; height: 100%; }

/* Toolbar */
.cs-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px; border-bottom: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
  flex-shrink: 0;
}
.cs-tb-left, .cs-tb-center, .cs-tb-right { display: flex; align-items: center; gap: 8px; }
.cs-tb-brand { font-size: 13px; font-weight: 700; color: var(--primary-light, #818cf8); display: flex; align-items: center; gap: 6px; }
.cs-tb-brand .lucide { width: 16px; height: 16px; }
.cs-tb-file { font-size: 12px; color: var(--text-muted); }
.cs-tb-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 7px 12px; border-radius: 7px; font-size: 11px; font-weight: 500;
  border: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
  background: transparent; color: var(--text-muted); cursor: pointer;
  transition: all 0.12s;
}
.cs-tb-btn:hover { border-color: var(--primary); color: var(--primary-light); background: color-mix(in srgb, var(--primary) 5%, transparent); }
.cs-tb-btn .lucide { width: 14px; height: 14px; }
.cs-tb-close { border: none; }
.cs-tb-close:hover { color: #ef4444; }

/* Main area */
.cs-main { display: flex; flex: 1; overflow: hidden; }

/* Canvas */
.cs-canvas { flex: 1; padding: 16px; overflow-y: auto; display: grid; gap: 12px; align-content: start; }
.cs-grid-1x1 { grid-template-columns: 1fr; }
.cs-grid-2x1 { grid-template-columns: 1fr 1fr; }
.cs-grid-1x2 { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
.cs-grid-2x2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
.cs-grid-3x1 { grid-template-columns: 1fr 1fr 1fr; }

/* Tile */
.cs-tile {
  border: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
  border-radius: 12px; overflow: hidden; display: flex; flex-direction: column;
  background: color-mix(in srgb, var(--text) 2%, transparent);
  transition: border-color 0.15s, box-shadow 0.15s;
  min-height: 200px;
}
.cs-tile:hover { border-color: color-mix(in srgb, var(--primary) 30%, transparent); }
.cs-tile-selected { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary), 0 4px 16px color-mix(in srgb, var(--primary) 12%, transparent); }
[data-theme="light"] .cs-tile { background: #fff; }

.cs-tile-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-bottom: 1px solid color-mix(in srgb, var(--text) 4%, transparent);
}
.cs-tile-title { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.3px; }
.cs-tile-actions { display: flex; gap: 4px; opacity: 0; transition: opacity 0.12s; }
.cs-tile:hover .cs-tile-actions { opacity: 1; }
.cs-tile-act { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 2px; border-radius: 4px; }
.cs-tile-act:hover { color: #ef4444; background: rgba(239,68,68,0.1); }
.cs-tile-act .lucide { width: 13px; height: 13px; }

.cs-tile-body { flex: 1; padding: 8px; position: relative; min-height: 150px; }
.cs-tile-body canvas { width: 100% !important; height: 100% !important; }

.cs-tile-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100%; gap: 8px; cursor: pointer; color: var(--text-muted); opacity: 0.5;
  transition: opacity 0.15s;
}
.cs-tile-empty:hover { opacity: 1; color: var(--primary-light); }
.cs-tile-empty .lucide { width: 32px; height: 32px; }
.cs-tile-empty span { font-size: 11px; font-weight: 500; }

/* Drop zones */
.cs-drop-zones { display: none; gap: 6px; padding: 8px 12px; border-top: 1px solid color-mix(in srgb, var(--text) 4%, transparent); }
.cs-drop {
  flex: 1; padding: 8px; border: 2px dashed color-mix(in srgb, var(--primary) 30%, transparent);
  border-radius: 6px; text-align: center; font-size: 10px; font-weight: 600;
  color: var(--primary-light); text-transform: uppercase; letter-spacing: 0.5px;
  transition: background 0.12s;
}
.cs-drop:hover, .cs-drop.dragover { background: color-mix(in srgb, var(--primary) 8%, transparent); border-color: var(--primary); }

/* Properties panel */
.cs-props {
  width: 280px; flex-shrink: 0; border-left: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
  display: flex; flex-direction: column; overflow-y: auto;
}
[data-theme="light"] .cs-props { background: #f9fafb; }
.cs-props-header { padding: 12px 16px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); border-bottom: 1px solid color-mix(in srgb, var(--text) 4%, transparent); }
.cs-props-body { padding: 12px 16px; flex: 1; }
.cs-props-empty { text-align: center; padding: 40px 16px; font-size: 12px; color: var(--text-muted); opacity: 0.6; }

.cs-prop-section { margin-bottom: 16px; }
.cs-prop-label { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 6px; }
.cs-prop-select {
  width: 100%; padding: 7px 10px; border-radius: 6px; font-size: 12px;
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  background: color-mix(in srgb, var(--text) 3%, transparent); color: var(--text);
  font-family: inherit;
}
.cs-prop-select:focus { outline: none; border-color: var(--primary); }
.cs-prop-input {
  width: 100%; padding: 7px 10px; border-radius: 6px; font-size: 12px;
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  background: color-mix(in srgb, var(--text) 3%, transparent); color: var(--text);
  font-family: inherit; box-sizing: border-box;
}
.cs-prop-input:focus { outline: none; border-color: var(--primary); }

/* Data panel (bottom) */
.cs-data {
  border-top: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
  flex-shrink: 0;
}
.cs-data-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px; font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--text-muted);
}
.cs-data-toggle { background: none; border: none; color: var(--text-muted); cursor: pointer; }
.cs-data-toggle .lucide { width: 14px; height: 14px; }
.cs-data-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 16px 12px; }

.cs-chip {
  padding: 5px 10px; border-radius: 6px; font-size: 11px; font-weight: 500;
  cursor: grab; transition: all 0.12s; user-select: none;
}
.cs-chip:active { cursor: grabbing; transform: scale(0.95); }
.cs-chip-meas { background: color-mix(in srgb, #8b5cf6 12%, transparent); color: #a78bfa; border: 1px solid color-mix(in srgb, #8b5cf6 20%, transparent); }
.cs-chip-dim { background: color-mix(in srgb, #6366f1 12%, transparent); color: #818cf8; border: 1px solid color-mix(in srgb, #6366f1 20%, transparent); }
.cs-chip-date { background: color-mix(in srgb, #22c55e 12%, transparent); color: #4ade80; border: 1px solid color-mix(in srgb, #22c55e 20%, transparent); }

/* Preview mode */
.cs-preview-mode .cs-toolbar,
.cs-preview-mode .cs-props,
.cs-preview-mode .cs-data { display: none; }
.cs-preview-mode .cs-canvas { padding: 24px; }
.cs-preview-mode .cs-tile-actions { display: none; }
.cs-preview-mode .cs-drop-zones { display: none !important; }

/* Responsive */
@media (max-width: 1024px) {
  .cs-main { flex-direction: column; }
  .cs-props { width: 100%; max-height: 200px; border-left: none; border-top: 1px solid color-mix(in srgb, var(--text) 6%, transparent); }
}
@media (max-width: 768px) {
  .cs-canvas { grid-template-columns: 1fr !important; }
  .cs-toolbar { flex-wrap: wrap; gap: 8px; }
  .cs-tb-center { flex-wrap: wrap; }
}


/* ============================================================
   MODULE 1: THEME PICKER
   ============================================================ */
.cs-theme-picker {
  position: fixed; z-index: 10010;
  background: var(--bg-card, rgba(22,32,56,0.95)); border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-radius: 10px; padding: 12px; min-width: 200px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4); backdrop-filter: blur(12px);
}
[data-theme="light"] .cs-theme-picker { background: #fff; box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.cs-theme-picker-title { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 8px; }
.cs-theme-opt {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 10px; border: 1px solid transparent; border-radius: 7px;
  background: transparent; color: var(--text); cursor: pointer; font-size: 12px;
  transition: all 0.12s; font-family: inherit;
}
.cs-theme-opt:hover { background: color-mix(in srgb, var(--primary) 8%, transparent); border-color: color-mix(in srgb, var(--primary) 20%, transparent); }
.cs-theme-active { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 10%, transparent); }
.cs-theme-swatches { display: flex; gap: 3px; }
.cs-theme-swatch { width: 14px; height: 14px; border-radius: 3px; }
.cs-theme-name { font-weight: 500; }

/* Theme-driven tile background */
.cs-canvas { --cs-tile-bg: rgba(255,255,255,0.03); --cs-tile-text: #e2e8f0; }
.cs-tile { background: var(--cs-tile-bg); }
.cs-tile-title { color: var(--cs-tile-text); opacity: 0.7; }

/* ============================================================
   MODULE 2: EXPORT DROPDOWN
   ============================================================ */
.cs-export-dropdown {
  position: fixed; z-index: 10010;
  background: var(--bg-card, rgba(22,32,56,0.95)); border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-radius: 10px; padding: 6px; min-width: 160px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4); backdrop-filter: blur(12px);
}
[data-theme="light"] .cs-export-dropdown { background: #fff; box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.cs-export-opt {
  display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 9px 12px; border: none; border-radius: 6px;
  background: transparent; color: var(--text); cursor: pointer; font-size: 12px;
  font-family: inherit; transition: background 0.12s;
}
.cs-export-opt:hover { background: color-mix(in srgb, var(--primary) 10%, transparent); }
.cs-export-opt .lucide { width: 14px; height: 14px; color: var(--text-muted); }

/* ============================================================
   MODULE 3: ANNOTATIONS UI
   ============================================================ */
.cs-annotations { border-top: 1px solid color-mix(in srgb, var(--text) 6%, transparent); padding-top: 12px; margin-top: 8px; }
.cs-ann-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 8px; margin-bottom: 4px; border-radius: 5px;
  background: color-mix(in srgb, #f59e0b 8%, transparent);
  border: 1px solid color-mix(in srgb, #f59e0b 20%, transparent);
}
.cs-ann-label { font-size: 11px; color: #f59e0b; font-weight: 500; }
.cs-ann-del { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 2px; border-radius: 3px; }
.cs-ann-del:hover { color: #ef4444; }
.cs-ann-del .lucide { width: 12px; height: 12px; }
.cs-ann-add { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.cs-ann-btn {
  display: flex; align-items: center; justify-content: center; gap: 4px;
  padding: 6px 10px; border-radius: 6px; font-size: 11px; font-weight: 600;
  border: 1px solid color-mix(in srgb, #f59e0b 30%, transparent);
  background: color-mix(in srgb, #f59e0b 8%, transparent); color: #f59e0b;
  cursor: pointer; font-family: inherit; transition: all 0.12s;
}
.cs-ann-btn:hover { background: color-mix(in srgb, #f59e0b 15%, transparent); border-color: #f59e0b; }
.cs-ann-btn .lucide { width: 12px; height: 12px; }

/* ============================================================
   MODULE 4: AI MINI-CHAT
   ============================================================ */
.cs-ai-fab {
  position: absolute; bottom: 80px; right: 24px; z-index: 10;
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none; color: #fff; font-size: 18px; cursor: pointer;
  box-shadow: 0 4px 16px rgba(99,102,241,0.4);
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex; align-items: center; justify-content: center;
}
.cs-ai-fab:hover { transform: scale(1.1); box-shadow: 0 6px 24px rgba(99,102,241,0.5); }

.cs-ai-chat {
  position: absolute; bottom: 130px; right: 24px; z-index: 10;
  width: 320px; max-height: 400px;
  background: var(--bg-card, rgba(22,32,56,0.95)); border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-radius: 14px; display: flex; flex-direction: column;
  box-shadow: 0 12px 48px rgba(0,0,0,0.4); backdrop-filter: blur(16px);
  overflow: hidden; animation: csFadeIn 0.2s ease;
}
[data-theme="light"] .cs-ai-chat { background: #fff; box-shadow: 0 12px 48px rgba(0,0,0,0.12); }
@keyframes csFadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.cs-ai-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
  font-size: 12px; font-weight: 700; color: var(--primary-light, #818cf8);
}
.cs-ai-close { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 2px; }
.cs-ai-close .lucide { width: 14px; height: 14px; }

.cs-ai-messages { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; max-height: 260px; }
.cs-ai-msg { padding: 8px 12px; border-radius: 10px; font-size: 12px; line-height: 1.5; max-width: 90%; word-wrap: break-word; }
.cs-ai-bot { background: color-mix(in srgb, var(--primary) 8%, transparent); color: var(--text); align-self: flex-start; border-bottom-left-radius: 3px; }
.cs-ai-user { background: var(--primary, #6366f1); color: #fff; align-self: flex-end; border-bottom-right-radius: 3px; }

.cs-ai-input-wrap {
  display: flex; gap: 6px; padding: 10px 12px;
  border-top: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
}
.cs-ai-input {
  flex: 1; padding: 8px 12px; border-radius: 8px; font-size: 12px;
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  background: color-mix(in srgb, var(--text) 3%, transparent); color: var(--text);
  font-family: inherit; outline: none;
}
.cs-ai-input:focus { border-color: var(--primary); }
.cs-ai-send {
  width: 32px; height: 32px; border-radius: 8px; border: none;
  background: var(--primary, #6366f1); color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.12s;
}
.cs-ai-send:hover { background: var(--primary-dark, #4f46e5); }
.cs-ai-send .lucide { width: 14px; height: 14px; }

/* ============================================================
   MODULE 5: UNDO/REDO (no extra CSS needed — uses toast)
   ============================================================ */