/* ==========================================================================
   App Screen Generator - Clean & Spacious Studio Styling
   ========================================================================== */

:root, [data-theme="dark"] {
  --bg-app: #0b0f19;
  --bg-sidebar: #111827;
  --bg-card: #1f2937;
  --bg-card-hover: #374151;
  --border-subtle: #1f2937;
  --border-strong: #374151;
  --input-bg: #090d16;
  --dock-bg: #090d16;
  --canvas-stage-bg: radial-gradient(circle at 50% 50%, #172033 0%, #090d16 100%);

  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-secondary: #0ea5e9;
  --accent-success: #10b981;
  --accent-danger: #f43f5e;
  --accent-warning: #f59e0b;

  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 10px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.35);
}

/* Light Theme */
[data-theme="light"] {
  --bg-app: #f1f5f9;
  --bg-sidebar: #ffffff;
  --bg-card: #f8fafc;
  --bg-card-hover: #e2e8f0;
  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  --input-bg: #ffffff;
  --dock-bg: #f8fafc;
  --canvas-stage-bg: radial-gradient(circle at 50% 50%, #ffffff 0%, #e2e8f0 100%);

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 10px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
}

/* Midnight Blue Theme */
[data-theme="midnight"] {
  --bg-app: #030712;
  --bg-sidebar: #0b1329;
  --bg-card: #152238;
  --bg-card-hover: #1e293b;
  --border-subtle: #1e293b;
  --border-strong: #334155;
  --input-bg: #070d1e;
  --dock-bg: #070d1e;
  --canvas-stage-bg: radial-gradient(circle at 50% 50%, #1e1b4b 0%, #030712 100%);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 10px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.35);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Plus Jakarta Sans', Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Google Material Symbols Font Styling */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined', 'Material Icons', sans-serif;
  font-weight: normal;
  font-style: normal;
  font-size: 20px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-feature-settings: 'liga';
  -moz-font-feature-settings: 'liga';
  font-feature-settings: 'liga';
  user-select: none;
  vertical-align: middle;
}

/* Header */
.app-header {
  height: 64px;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 50;
  flex-shrink: 0;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-glow);
}

.brand-text h1 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.brand-badge {
  font-size: 11px;
  font-weight: 700;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(52, 211, 153, 0.4);
  letter-spacing: 0.02em;
}

[data-theme="light"] .brand-badge {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  border-color: rgba(16, 185, 129, 0.35);
}

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

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.header-left .header-project-input { min-width: 120px; max-width: 320px; }

.zoom-btn.zoom-btn:disabled { opacity: 0.35; cursor: default; background: transparent; }

.zoom-btn.header-icon-btn {
  width: 38px;
  height: 38px;
  font-size: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
}

/* Export menu (native <details>) */
.export-menu { position: relative; }
.export-menu > summary { list-style: none; cursor: pointer; user-select: none; }
.export-menu > summary::-webkit-details-marker { display: none; }
.export-menu.busy > summary { pointer-events: none; opacity: 0.7; }
.export-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 230px;
  padding: 6px;
  background: var(--bg-sidebar);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  z-index: 100;
}
.export-menu-panel button {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 12px;
  background: none;
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}
.export-menu-panel button:hover, .export-menu-panel button:focus-visible { background: var(--bg-card-hover); outline: none; }
.export-menu-panel button small { color: var(--text-muted); font-size: 12px; }
.export-menu-panel hr.export-divider {
  border: 0;
  border-top: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  margin: 4px 6px;
}

/* Settings dialog (native <dialog>) */
.settings-dialog {
  width: min(400px, calc(100vw - 32px));
  padding: 24px;
  margin: auto;
  background: var(--bg-sidebar);
  color: var(--text-main);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.settings-dialog::backdrop { background: rgba(0, 0, 0, 0.5); }
.settings-title { font-size: 17px; font-weight: 700; margin-bottom: 16px; }
.settings-actions { display: flex; justify-content: flex-end; margin-top: 8px; }

/* Studio Layout: Dock + Drawer + Viewport + Right Inspector */
.studio-main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* 1. Left Dock (Slim Navigation Column) */
.left-nav-dock {
  width: 72px;
  background: var(--dock-bg, #090d16);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
  gap: 12px;
  z-index: 40;
  flex-shrink: 0;
}

.dock-tab-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.18s ease;
}

.dock-tab-btn:hover {
  background: var(--bg-card);
  color: var(--text-main);
}

.dock-tab-btn.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.4);
  color: #818cf8;
}

.dock-tab-icon {
  font-size: 20px;
}

.dock-tab-label {
  font-size: 10px;
  font-weight: 600;
}

/* 2. Left Quick Drawer (Spacious Content Panel) */
.left-quick-drawer {
  width: 340px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s ease;
  z-index: 35;
  overflow: hidden;
  flex-shrink: 0;
}

.left-quick-drawer.collapsed {
  width: 0;
  border-right: none;
}

.drawer-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.drawer-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.drawer-collapse-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.drawer-collapse-btn:hover {
  background: var(--bg-card);
  color: var(--text-main);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.drawer-section {
  display: flex;
  flex-direction: column;
}

/* 3. Center Canvas Viewport */
.canvas-viewport-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--canvas-stage-bg);
  overflow: hidden;
  position: relative;
}

.viewport-top-bar {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 10;
}

.header-project-input {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 700;
  padding: 4px 8px;
  outline: none;
  transition: all 0.15s ease;
}

.header-project-input:hover {
  background: var(--bg-card);
  border-color: var(--border-strong);
}

.header-project-input:focus {
  background: var(--input-bg);
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.canvas-zoom-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 3px 8px;
}

.zoom-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.zoom-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.zoom-level-text {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 44px;
  text-align: center;
}

.canvas-stage-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  align-items: safe center;
  justify-content: safe center;
  overflow: auto;
  padding: 40px;
  position: relative;
  box-sizing: border-box;
}

#main-app-canvas {
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  margin: auto;
  flex-shrink: 0;
  display: block;
  user-select: none;
}

#main-app-canvas.drag-over {
  outline: 4px dashed #6366f1;
  outline-offset: 8px;
}

/* 4. Bottom Screen Strip */
.bottom-screen-strip {
  height: 124px;
  background: var(--bg-sidebar);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 20px;
  overflow-x: auto;
  z-index: 20;
  flex-shrink: 0;
}

/* 5. Right Inspector Sidebar */
.studio-inspector-sidebar {
  width: 300px;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 20px;
  flex-shrink: 0;
  z-index: 30;
}

/* Utilities */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.pt-3 { padding-top: 12px; }
.p-3 { padding: 12px; }
.p-4 { padding: 16px; }
.gap-2 { gap: 8px; }
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.text-xs { font-size: 12px; }
.text-sm { font-size: 14px; }
.text-slate-300 { color: var(--text-main); }
.text-slate-400 { color: var(--text-muted); }
.text-white { color: var(--text-main); }
.border-slate-700 { border-color: var(--border-subtle) !important; }
.border-slate-800 { border-color: var(--border-subtle) !important; }
.bg-slate-900 { background-color: var(--bg-card) !important; }
.text-rose-400 { color: #fb7185; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
/* Utilities referenced by inspector / drawer markup */
.text-center { text-align: center; }
.text-\[11px\] { font-size: 11px; }
.min-w-0 { min-width: 0; }
.gap-1\.5 { gap: 6px; }
.gap-3 { gap: 12px; }
.p-2\.5 { padding: 10px; }
.p-6 { padding: 24px; }
.py-2\.5 { padding-top: 10px; padding-bottom: 10px; }
.mt-0\.5 { margin-top: 2px; }
.mt-1 { margin-top: 4px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 4px; }
.mb-1\.5 { margin-bottom: 6px; }
.rounded-xl { border-radius: var(--radius-md); }
.border { border: 1px solid var(--border-strong); }
.border-t { border-top: 1px solid var(--border-subtle); }
.border-indigo-500\/20 { border-color: rgba(99, 102, 241, 0.2); }
.border-indigo-500\/30 { border-color: rgba(99, 102, 241, 0.3); }
.bg-indigo-500\/10 { background-color: rgba(99, 102, 241, 0.1); }
.bg-slate-800\/40 { background-color: var(--bg-card); }
.cursor-pointer { cursor: pointer; }

/* All-screens overview */
.overview-container {
  --overview-thumb-h: 520px;
  flex: 1;
  overflow: auto;
  padding: 32px;
}
.overview-row {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  width: max-content;
  margin: 0 auto;
}
.overview-card {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.overview-frame {
  height: var(--overview-thumb-h);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid transparent;
  box-shadow: var(--shadow-lg);
  transition: transform 0.15s, border-color 0.15s;
}
.overview-card:hover .overview-frame { transform: translateY(-4px); border-color: var(--border-strong); }
.overview-card.active .overview-frame { border-color: var(--accent-primary); box-shadow: var(--shadow-glow); }
.overview-canvas { height: 100%; width: auto; display: block; }
.overview-label { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); }
.overview-index {
  width: 22px; height: 22px; border-radius: var(--radius-full);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-card-hover); color: var(--text-main); font-weight: 700; font-size: 11px;
}
.overview-card.active .overview-index { background: var(--accent-primary); color: #fff; }
.overview-error { height: 100%; aspect-ratio: 9 / 16; display: flex; align-items: center; justify-content: center; color: var(--accent-danger); font-size: 12px; }
.overview-size { display: flex; align-items: center; gap: 8px; }
#overview-size-range { width: 140px; }
.settings-dialog .form-group { margin-bottom: 14px; }
#viewport-hint { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.viewport-top-bar > .flex { min-width: 0; }
#btn-toggle-overview { white-space: nowrap; flex-shrink: 0; }
.settings-section { border: 1px solid var(--border-strong); border-radius: var(--radius-md); padding: 12px 14px 14px; margin: 4px 0 12px; }
.settings-section legend { padding: 0 6px; margin: 0; }
.ai-status { font-size: 12px; min-height: 16px; margin-bottom: 8px; color: var(--text-muted); }
.ai-status[data-kind="ok"] { color: var(--accent-success); }
.ai-status[data-kind="error"] { color: var(--accent-danger); }
.ai-needed { padding: 10px; border: 1px dashed var(--border-strong); border-radius: var(--radius-sm); }

/* Feature graphic dialog */
.fg-list { list-style: none; margin: 0 0 8px; padding: 0; display: flex; flex-direction: column; gap: 6px; max-height: 260px; overflow-y: auto; }
.fg-row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 10px; background: var(--bg-card);
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  font-size: 13px; color: var(--text-main);
}
.fg-row:focus-visible { outline: 2px solid var(--accent-secondary); outline-offset: 1px; }
.fg-row.is-off .fg-thumb, .fg-row.is-off .fg-name { opacity: 0.4; }
.fg-row.dragging { opacity: 0.5; }
.fg-row.drop-above { box-shadow: 0 -2px 0 0 var(--accent-primary); }
.fg-row.drop-below { box-shadow: 0 2px 0 0 var(--accent-primary); }
.fg-row input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent-primary); cursor: pointer; }
.fg-thumb { width: 27px; height: 48px; object-fit: cover; border-radius: 4px; background: var(--bg-card-hover); }
.fg-name { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.layer-btn:disabled { opacity: 0.3; cursor: default; }

/* Feature graphic card in the screen strip: wider card so the landscape preview fits inside it */
.screen-thumb-card.feature-thumb-card { width: 170px; }
.feature-thumb-card .feature-mini-preview { display: flex; align-items: center; justify-content: center; padding-top: 0; }
.feature-mini-preview span { font-size: 10px; font-weight: 700; color: rgba(255, 255, 255, 0.85); }

/* ==========================================================================
   Rulers & Draggable Guides (Origin at Artboard Top-Right)
   ========================================================================== */
.canvas-viewport-container.has-rulers .canvas-stage-wrapper {
  margin-top: 24px;
  margin-left: 24px;
}

.ruler-container {
  position: absolute;
  top: 50px; /* Below viewport-top-bar */
  left: 0;
  right: 0;
  bottom: 124px; /* Above bottom-screen-strip */
  pointer-events: none;
  z-index: 15;
  overflow: hidden;
}

.ruler-corner {
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  background: #0f172a;
  border-right: 1px solid #334155;
  border-bottom: 1px solid #334155;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  pointer-events: auto;
  user-select: none;
  z-index: 18;
}

.ruler-corner-icon {
  font-size: 12px;
  font-weight: 800;
  color: #38bdf8;
  line-height: 1;
}

.ruler-corner:hover {
  background: #1e293b;
}

.ruler-canvas {
  position: absolute;
  pointer-events: auto;
  user-select: none;
  background: #111827;
}

.ruler-h {
  top: 0;
  left: 24px;
  right: 0;
  width: calc(100% - 24px);
  height: 24px;
  cursor: row-resize;
  z-index: 17;
}

.ruler-v {
  top: 24px;
  left: 0;
  bottom: 0;
  width: 24px;
  height: calc(100% - 24px);
  cursor: col-resize;
  z-index: 17;
}

/* Guides Overlay */
.guides-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 16;
}

.guide-line {
  position: absolute;
  pointer-events: auto;
  z-index: 16;
  user-select: none;
}

.guide-line-h {
  left: 0;
  right: 0;
  width: 100%;
  height: 11px;
  margin-top: -5px;
  cursor: row-resize;
}

.guide-line-h::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 0;
  right: 0;
  height: 1px;
  background: #38bdf8;
  box-shadow: 0 0 4px rgba(56, 189, 248, 0.7);
}

.guide-line-v {
  top: 0;
  bottom: 0;
  height: 100%;
  width: 11px;
  margin-left: -5px;
  cursor: col-resize;
}

.guide-line-v::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: #38bdf8;
  box-shadow: 0 0 4px rgba(56, 189, 248, 0.7);
}

.guide-line:hover::before,
.guide-line.active::before {
  background: #f43f5e;
  box-shadow: 0 0 6px rgba(244, 63, 94, 0.9);
}

.guide-badge {
  position: absolute;
  display: none;
  background: #0f172a;
  color: #38bdf8;
  border: 1px solid #38bdf8;
  border-radius: 3px;
  font-size: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 600;
  padding: 1px 4px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 20;
}

.guide-line-h .guide-badge {
  top: 7px;
  left: 20px;
}

.guide-line-v .guide-badge {
  left: 7px;
  top: 20px;
}

.guide-line:hover .guide-badge {
  display: block;
}

/* Floating Tooltip */
.ruler-guide-tooltip {
  position: fixed;
  background: rgba(15, 23, 42, 0.95);
  color: #38bdf8;
  border: 1px solid #38bdf8;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  z-index: 9999;
  transform: translate(5px, 5px);
}