/* ==========================================================================
   OPENHEART — ULTRA-MODERN STUDIO (2026 PRECISION DEVELOPER INTERFACE)
   Inspired by Linear, Raycast, Vercel, and Apple Developer Tools.
   Clean Glassmorphism, 12-Column Responsive Workspace, Floating Micro-Cards.
   ========================================================================== */

:root {
  /* ── Modern Neutral Canvas ── */
  --bg-app: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F1F5F9;
  --bg-muted: #E2E8F0;
  
  /* ── Precision Faded Borders ── */
  --border-light: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-focus: #0F172A;
  
  /* ── High-Contrast Typography ── */
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-faint: #94A3B8;
  --text-inverse: #FFFFFF;

  /* ── Modern Accent Accents ── */
  --accent-red: #EF4444;
  --accent-red-subtle: #FEF2F2;
  --accent-blue: #3B82F6;
  --accent-blue-subtle: #EFF6FF;
  --accent-emerald: #10B981;
  --accent-emerald-subtle: #ECFDF5;
  --accent-indigo: #6366F1;

  /* ── Elevation Shadows ── */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
  --shadow-card: 0 4px 16px -2px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.03);
  --shadow-modal: 0 20px 40px -8px rgba(15, 23, 42, 0.12), 0 8px 16px -4px rgba(15, 23, 42, 0.06);

  /* ── Radii ── */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* ── Typography ── */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

/* ── Ultra-Sleek Precision Dark Mode Theme ── */
body.dark-theme, [data-theme="dark"] {
  --bg-app: #0B0F19;
  --bg-surface: #111827;
  --bg-subtle: #1F2937;
  --bg-muted: #374151;

  --border-light: #1F2937;
  --border-medium: #374151;
  --border-focus: #60A5FA;

  --text-main: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-faint: #6B7280;
  --text-inverse: #0F172A;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 4px 16px -2px rgba(0, 0, 0, 0.5);
  --shadow-modal: 0 20px 40px -8px rgba(0, 0, 0, 0.7);
}

body.dark-theme .app-header {
  background: rgba(17, 24, 39, 0.95);
}

body.dark-theme .interactive-canvas-container {
  background-color: #0B0F19;
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.08) 1.2px, transparent 1.2px),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

/* ── Reset & Core ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}

/* ── App Shell Layout ── */
.app-shell {
  display: grid;
  grid-template-rows: 60px 1fr 34px;
  height: 100vh;
  width: 100vw;
  background: var(--bg-app);
}

/* ── Top Header Navigation ── */
.app-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
}

.header-left-col {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-icon-box {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-glyph {
  width: 28px;
  height: 28px;
  background: var(--text-main);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 14px;
}

.brand-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border-light);
}

/* GitHub Repository Import Bar */
.repo-import-bar {
  display: flex;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  padding: 3px 6px 3px 12px;
  width: 360px;
  transition: all 0.15s ease;
}

.repo-import-bar:focus-within {
  background: var(--bg-surface);
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.repo-import-icon {
  color: var(--text-faint);
  margin-right: 8px;
  font-size: 14px;
}

.repo-import-input {
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-main);
  width: 100%;
  outline: none;
}

.repo-import-input::placeholder {
  color: var(--text-faint);
}

.btn-analyze-pill {
  background: var(--text-main);
  color: var(--text-inverse);
  border: none;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.12s ease;
}

.btn-analyze-pill:hover {
  background: #1E293B;
  transform: scale(1.02);
}

/* Preset Repository Chips */
.preset-chips-box {
  display: flex;
  align-items: center;
  gap: 6px;
}

.preset-chip {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.12s ease;
}

.preset-chip:hover {
  background: var(--bg-subtle);
  border-color: var(--border-medium);
  color: var(--text-main);
}

/* Header Right Actions */
.header-right-col {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-emerald-subtle);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #065F46;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.live-pulse {
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
}

.btn-header-action {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-xs);
  transition: all 0.12s ease;
}

.btn-header-action:hover {
  background: var(--bg-subtle);
  border-color: var(--border-medium);
}

/* ── Main Workspace 12-Column Grid ── */
.workspace-grid {
  display: grid;
  grid-template-columns: 280px 1fr 380px;
  gap: 14px;
  padding: 14px 18px;
  height: calc(100vh - 94px);
  overflow: hidden;
}

/* Left Sidebar Rail */
.sidebar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 14px 10px;
}

.sidebar-category-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 8px 10px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-nav-list {
  list-style: none;
}

.sidebar-tab-btn {
  width: 100%;
  padding: 8px 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  margin-bottom: 2px;
  transition: all 0.12s ease;
}

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

.sidebar-tab-btn.active {
  background: var(--accent-red-subtle);
  border-color: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  font-weight: 600;
}

.phase-chip {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  padding: 2px 6px;
  background: var(--bg-subtle);
  color: var(--text-faint);
  border-radius: var(--radius-pill);
}

.sidebar-tab-btn.active .phase-chip {
  background: rgba(239, 68, 68, 0.1);
  color: var(--accent-red);
}

/* Center Canvas Viewport */
.canvas-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.canvas-floating-toolbar {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  z-index: 10;
}

.hud-status-capsule {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-main);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-card);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hud-action-controls {
  display: flex;
  gap: 6px;
  pointer-events: auto;
}

.hud-round-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-xs);
  transition: all 0.12s ease;
}

.hud-round-btn:hover {
  background: var(--bg-subtle);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

#interactive-canvas {
  width: 100%;
  height: 100%;
  background-color: #FAFCFE;
  background-image: radial-gradient(circle, #CBD5E1 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Right Inspector Panel */
.inspector-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Inspector Tab Switcher ── */
.inspector-nav-tabs {
  display: flex;
  background: #F8FAFC;
  border-bottom: 1px solid var(--border-light);
  padding: 4px 6px 0;
  gap: 4px;
}

.inspector-tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 8px 12px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.12s ease;
}

.inspector-tab-btn:hover {
  color: var(--text-main);
}

.inspector-tab-btn.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  background: #FFFFFF;
  border-top-left-radius: var(--radius-xs);
  border-top-right-radius: var(--radius-xs);
}

.badge-count {
  font-size: 9.5px;
  background: #E2E8F0;
  color: #475569;
  padding: 1px 5px;
  border-radius: 10px;
  font-weight: 700;
}

/* ── VS Code / Android Studio File Tree ── */
.tree-explorer-header {
  padding: 6px 12px;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  background: #F8FAFC;
  border-bottom: 1px solid var(--border-light);
}

.file-tree-scroll-container {
  max-height: 180px;
  overflow-y: auto;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 0;
}

.tree-folder-header {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  cursor: pointer;
  user-select: none;
  color: #334155;
  font-weight: 600;
  font-size: 11px;
}

.tree-folder-header:hover {
  background: #F1F5F9;
}

.tree-arrow {
  font-size: 8px;
  color: #64748B;
  width: 10px;
  display: inline-block;
}

.tree-folder-icon {
  font-size: 11px;
}

.tree-folder-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-file-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  cursor: pointer;
  color: #1E293B;
  font-size: 11px;
  user-select: none;
}

.tree-file-row:hover {
  background: #F1F5F9;
}

.tree-file-row.active {
  background: #EFF6FF;
  color: #1D4ED8;
  font-weight: 600;
  border-left: 2.5px solid #2563EB;
}

.tree-badge {
  font-size: 8.5px;
  font-weight: 800;
  padding: 1px 4px;
  border-radius: 3px;
  display: inline-block;
  line-height: 1;
}

.badge-c {
  background: #DBEAFE;
  color: #1D4ED8;
}

.badge-i {
  background: #DCFCE7;
  color: #15803D;
}

.badge-a {
  background: #F3E8FF;
  color: #7E22CE;
}

.tree-file-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inspector-card-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-surface);
}

.inspector-headline-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.inspector-sub-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
}

.inspector-data-body {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-surface);
}

.data-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  padding: 4px 0;
}

.data-label {
  color: var(--text-muted);
  font-weight: 500;
}

.data-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

.monaco-editor-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  overflow: hidden;
}

.monaco-breadcrumb-bar {
  padding: 6px 14px;
  background: #F1F5F9;
  border-bottom: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  overflow-x: auto;
}

.breadcrumb-root {
  color: #475569;
  font-weight: 600;
}

.breadcrumb-divider {
  color: #94A3B8;
  font-weight: 400;
}

.breadcrumb-pkg {
  color: #2563EB;
  font-weight: 600;
}

.breadcrumb-file {
  color: #0F172A;
  font-weight: 700;
}

.monaco-tab-bar {
  padding: 8px 14px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sync-status-pill {
  font-size: 10px;
  color: var(--accent-emerald);
  background: var(--accent-emerald-subtle);
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  font-weight: 700;
}

#monaco-container {
  flex: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* ── Modern Footer Status Bar ── */
.app-footer {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
}

/* ── Pan Sensitivity Slider Control ── */
.pan-sensitivity-slider-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  padding: 3px 10px;
  margin-right: 6px;
}

.pan-slider-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  color: #334155;
  white-space: nowrap;
}

#pan-sensitivity-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 75px;
  height: 4px;
  border-radius: 2px;
  background: #CBD5E1;
  outline: none;
  cursor: pointer;
}

#pan-sensitivity-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2563EB;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
  transition: transform 0.15s ease;
}

#pan-sensitivity-slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}

#pan-sensitivity-val {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: #2563EB;
  min-width: 32px;
}