/**
 * ============================================================================
 * APPLE LIQUID GLASS DESIGN SYSTEM — CORE STYLES & TOKENS
 * ============================================================================
 * True optical meta-material implementation featuring:
 * 1. Snell's Law Optical Refraction via SVG Displacement Mapping
 * 2. Tri-Channel Chromatic Dispersion (RGB Fringe)
 * 3. Double-Bezel Concentric Squircle Geometry
 * 4. Dynamic Cursor & Device Specular Parallax
 * 5. Micro-Dither Anti-Banding Layer
 * ============================================================================
 */

:root {
  /* Canvas Backgrounds */
  --lg-canvas-bg: #F2F2F0;
  --lg-canvas-text: #111114;
  --lg-canvas-text-muted: #6E6E73;

  /* Glass Base Colors (Light Mode) */
  --lg-glass-primary: rgba(255, 255, 255, 0.45);
  --lg-glass-secondary: rgba(255, 255, 255, 0.25);
  --lg-glass-elevated: rgba(255, 255, 255, 0.65);
  --lg-glass-interactive: rgba(255, 255, 255, 0.55);
  --lg-glass-pressed: rgba(240, 240, 242, 0.85);
  --lg-glass-border: rgba(255, 255, 255, 0.65);
  --lg-glass-border-subtle: rgba(0, 0, 0, 0.06);

  /* Optical Physics */
  --lg-blur-sm: 12px;
  --lg-blur-md: 24px;
  --lg-blur-lg: 40px;
  --lg-blur-xl: 64px;
  --lg-saturate: 160%;
  --lg-contrast: 104%;
  --lg-refract-scale: 32;

  /* Dynamic Specular Highlights & Shadows */
  --lg-light-x: -50px;
  --lg-light-y: -80px;
  --lg-specular-color: rgba(255, 255, 255, 0.75);
  --lg-specular-ambient: rgba(0, 0, 0, 0.12);
  --lg-shadow-ambient: 0 20px 48px -12px rgba(0, 0, 0, 0.08);
  --lg-shadow-crisp: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --lg-shadow-rim: inset 0 1px 1px 0 rgba(255, 255, 255, 0.8), inset 0 -1px 1px 0 rgba(0, 0, 0, 0.04);

  /* Geometry & Bezel */
  --lg-bezel-outer-radius: 36px;
  --lg-bezel-padding: 6px;
  --lg-bezel-inner-radius: calc(var(--lg-bezel-outer-radius) - var(--lg-bezel-padding));

  /* Motion & Spring */
  --lg-spring-fluid: cubic-bezier(0.32, 0.72, 0, 1);
  --lg-spring-snappy: cubic-bezier(0.18, 0.89, 0.32, 1.28);
  --lg-spring-viscous: cubic-bezier(0.2, 0.9, 0.1, 1);
  --lg-duration-normal: 480ms;
  --lg-duration-fast: 220ms;

  /* Universal Accessibility & State Tokens */
  --lg-focus-ring: #0071E3;
  --lg-focus-ring-offset: 3px;
  --lg-error-border: #FF3B30;
  --lg-success-border: #34C759;

  /* Educational & Spatial Classroom Tokens (v5.1 Addendum) */
  --lg-palette-bg: rgba(255, 255, 255, 0.62);
  --lg-palette-border: rgba(255, 255, 255, 0.75);
  --lg-palette-shadow: 0 16px 40px -8px rgba(0, 0, 0, 0.16), 0 0 0 1px rgba(255, 255, 255, 0.4);
  --lg-halo-glow-speaking: 0 0 0 3px rgba(52, 199, 89, 0.45), 0 0 24px rgba(52, 199, 89, 0.35);
  --lg-halo-glow-queue: 0 0 0 3px rgba(255, 159, 10, 0.45), 0 0 24px rgba(255, 159, 10, 0.35);
  --lg-voice-queue-amber: #FF9F0A;
  --lg-voice-queue-green: #34C759;

  /* Assessment & Attendance Tokens (Items 116, 117, 118) */
  --lg-quiz-active: #0071E3;
  --lg-quiz-correct: #34C759;
  --lg-quiz-wrong: #FF3B30;
  --lg-attendance-present: #34C759;
  --lg-attendance-absent: #FF3B30;
  --lg-attendance-tardy: #FF9F0A;
  --lg-attendance-excused: #5856D6;

  /* Universal Well, Pill & Interactive Tokens (Theme-Adaptive) */
  --lg-well-bg: rgba(0, 0, 0, 0.035);
  --lg-well-border: rgba(0, 0, 0, 0.08);
  --lg-pill-bg: rgba(0, 0, 0, 0.05);
  --lg-pill-border: rgba(0, 0, 0, 0.08);
  --lg-pill-text: var(--lg-canvas-text);
  --lg-tab-active-bg: rgba(255, 255, 255, 0.95);
  --lg-tab-active-text: #111114;
  --lg-tab-active-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --lg-cta-primary-bg: #0071E3;
  --lg-cta-primary-text: #FFFFFF;
  --lg-cta-primary-shadow: 0 8px 24px -4px rgba(0, 113, 227, 0.35);
  --lg-action-card-bg: var(--lg-glass-secondary);
  --lg-action-card-border: var(--lg-glass-border);
}

/* Dark Mode Tokens */
@media (prefers-color-scheme: dark) {
  :root {
    --lg-canvas-bg: #0A0A0C;
    --lg-canvas-text: #F5F5F7;
    --lg-canvas-text-muted: #86868B;

    --lg-glass-primary: rgba(30, 30, 35, 0.55);
    --lg-glass-secondary: rgba(20, 20, 24, 0.40);
    --lg-glass-elevated: rgba(38, 38, 46, 0.70);
    --lg-glass-interactive: rgba(45, 45, 55, 0.60);
    --lg-glass-pressed: rgba(55, 55, 68, 0.80);
    --lg-glass-border: rgba(255, 255, 255, 0.15);
    --lg-glass-border-subtle: rgba(255, 255, 255, 0.05);

    --lg-saturate: 180%;
    --lg-specular-color: rgba(255, 255, 255, 0.35);
    --lg-specular-ambient: rgba(0, 0, 0, 0.65);
    --lg-shadow-ambient: 0 24px 64px -16px rgba(0, 0, 0, 0.55);
    --lg-shadow-crisp: 0 1px 3px 0 rgba(0, 0, 0, 0.35);
    --lg-shadow-rim: inset 0 1px 1px 0 rgba(255, 255, 255, 0.25), inset 0 -1px 1px 0 rgba(0, 0, 0, 0.45);

    --lg-focus-ring: #0A84FF;
    --lg-error-border: #FF453A;
    --lg-success-border: #30D158;

    --lg-palette-bg: rgba(28, 28, 30, 0.72);
    --lg-palette-border: rgba(255, 255, 255, 0.18);
    --lg-palette-shadow: 0 20px 48px -8px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.12);

    --lg-quiz-active: #0A84FF;
    --lg-quiz-correct: #30D158;
    --lg-quiz-wrong: #FF453A;
    --lg-attendance-present: #30D158;
    --lg-attendance-absent: #FF453A;
    --lg-attendance-tardy: #FF9F0A;
    --lg-attendance-excused: #5E5CE6;

    --lg-well-bg: rgba(0, 0, 0, 0.35);
    --lg-well-border: rgba(255, 255, 255, 0.08);
    --lg-pill-bg: rgba(255, 255, 255, 0.08);
    --lg-pill-border: rgba(255, 255, 255, 0.12);
    --lg-pill-text: var(--lg-canvas-text);
    --lg-tab-active-bg: rgba(255, 255, 255, 0.16);
    --lg-tab-active-text: #FFFFFF;
    --lg-tab-active-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --lg-cta-primary-bg: #0A84FF;
    --lg-cta-primary-text: #FFFFFF;
    --lg-cta-primary-shadow: 0 8px 24px -4px rgba(10, 132, 255, 0.45);
    --lg-action-card-bg: rgba(255, 255, 255, 0.05);
    --lg-action-card-border: rgba(255, 255, 255, 0.14);
  }
}

/* Explicit Mode Classes */
.theme-dark {
  --lg-canvas-bg: #0A0A0C;
  --lg-canvas-text: #F5F5F7;
  --lg-canvas-text-muted: #86868B;
  --lg-glass-primary: rgba(30, 30, 35, 0.55);
  --lg-glass-secondary: rgba(20, 20, 24, 0.40);
  --lg-glass-elevated: rgba(38, 38, 46, 0.70);
  --lg-glass-interactive: rgba(45, 45, 55, 0.60);
  --lg-glass-pressed: rgba(55, 55, 68, 0.80);
  --lg-glass-border: rgba(255, 255, 255, 0.15);
  --lg-glass-border-subtle: rgba(255, 255, 255, 0.05);
  --lg-specular-color: rgba(255, 255, 255, 0.35);
  --lg-shadow-ambient: 0 24px 64px -16px rgba(0, 0, 0, 0.55);
  --lg-shadow-rim: inset 0 1px 1px 0 rgba(255, 255, 255, 0.25), inset 0 -1px 1px 0 rgba(0, 0, 0, 0.45);

  --lg-well-bg: rgba(0, 0, 0, 0.35);
  --lg-well-border: rgba(255, 255, 255, 0.08);
  --lg-pill-bg: rgba(255, 255, 255, 0.08);
  --lg-pill-border: rgba(255, 255, 255, 0.12);
  --lg-pill-text: var(--lg-canvas-text);
  --lg-tab-active-bg: rgba(255, 255, 255, 0.16);
  --lg-tab-active-text: #FFFFFF;
  --lg-tab-active-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --lg-cta-primary-bg: #0A84FF;
  --lg-cta-primary-text: #FFFFFF;
  --lg-cta-primary-shadow: 0 8px 24px -4px rgba(10, 132, 255, 0.45);
  --lg-action-card-bg: rgba(255, 255, 255, 0.05);
  --lg-action-card-border: rgba(255, 255, 255, 0.14);
}

.theme-light {
  --lg-canvas-bg: #F2F2F0;
  --lg-canvas-text: #111114;
  --lg-canvas-text-muted: #6E6E73;
  --lg-glass-primary: rgba(255, 255, 255, 0.45);
  --lg-glass-secondary: rgba(255, 255, 255, 0.25);
  --lg-glass-elevated: rgba(255, 255, 255, 0.65);
  --lg-glass-interactive: rgba(255, 255, 255, 0.55);
  --lg-glass-pressed: rgba(240, 240, 242, 0.85);
  --lg-glass-border: rgba(255, 255, 255, 0.65);
  --lg-glass-border-subtle: rgba(0, 0, 0, 0.06);
  --lg-specular-color: rgba(255, 255, 255, 0.75);
  --lg-shadow-ambient: 0 20px 48px -12px rgba(0, 0, 0, 0.08);
  --lg-shadow-rim: inset 0 1px 1px 0 rgba(255, 255, 255, 0.8), inset 0 -1px 1px 0 rgba(0, 0, 0, 0.04);

  --lg-well-bg: rgba(0, 0, 0, 0.035);
  --lg-well-border: rgba(0, 0, 0, 0.08);
  --lg-pill-bg: rgba(0, 0, 0, 0.05);
  --lg-pill-border: rgba(0, 0, 0, 0.08);
  --lg-pill-text: var(--lg-canvas-text);
  --lg-tab-active-bg: rgba(255, 255, 255, 0.95);
  --lg-tab-active-text: #111114;
  --lg-tab-active-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --lg-cta-primary-bg: #0071E3;
  --lg-cta-primary-text: #FFFFFF;
  --lg-cta-primary-shadow: 0 8px 24px -4px rgba(0, 113, 227, 0.35);
  --lg-action-card-bg: var(--lg-glass-secondary);
  --lg-action-card-border: var(--lg-glass-border);
}

/* ============================================================================
 * COMPONENT ATOMS & UTILITIES
 * ============================================================================ */

/* 1. DOUBLE-BEZEL SHELL (The Outer Protective Floating Glass Ring) */
.lg-shell {
  position: relative;
  border-radius: var(--lg-bezel-outer-radius);
  padding: var(--lg-bezel-padding);
  background: var(--lg-glass-secondary);
  backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate)) contrast(var(--lg-contrast));
  -webkit-backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate)) contrast(var(--lg-contrast));
  border: 1px solid var(--lg-glass-border);
  box-shadow: var(--lg-shadow-ambient), var(--lg-shadow-crisp), var(--lg-shadow-rim);
  transition: transform var(--lg-duration-normal) var(--lg-spring-fluid),
              box-shadow var(--lg-duration-normal) var(--lg-spring-fluid),
              border-color var(--lg-duration-fast) ease;
  overflow: hidden;
  box-sizing: border-box;
  -webkit-mask-image: -webkit-radial-gradient(white, black);
  contain: paint;
}

/* 2. CONCENTRIC INNER CORE */
.lg-core {
  position: relative;
  border-radius: var(--lg-bezel-inner-radius);
  background: var(--lg-glass-primary);
  border: 1px solid var(--lg-glass-border-subtle);
  padding: 1.5rem;
  overflow: hidden;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* 3. DYNAMIC SPECULAR GLEAM (Follows Cursor Vector) */
.lg-specular-gleam {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(
    circle 320px at calc(50% + var(--lg-light-x, 0px)) calc(50% + var(--lg-light-y, 0px)),
    var(--lg-specular-color) 0%,
    rgba(255, 255, 255, 0.05) 55%,
    transparent 100%
  );
  mix-blend-mode: overlay;
  opacity: 0.65;
  transition: opacity var(--lg-duration-fast) ease;
}

/* 4. OPTICAL REFRACTION FILTER ATTACHMENT (Snell's Law) */
.lg-refract {
  backdrop-filter: url(#apple-liquid-refraction) blur(var(--lg-blur-sm)) saturate(var(--lg-saturate));
  -webkit-backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate)); /* Safari fallback */
}

/* 5. CHROMATIC ABERRATION PRISM FILTER */
.lg-chromatic {
  backdrop-filter: url(#apple-chromatic-glass) blur(var(--lg-blur-sm)) saturate(var(--lg-saturate));
  -webkit-backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate)); /* Safari fallback */
}

/* 6. BUTTON-IN-BUTTON INTERACTIVE PILL */
.lg-pill-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  padding: 0 8px 0 20px;
  border-radius: 9999px;
  background: var(--lg-glass-interactive);
  backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate));
  -webkit-backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate));
  border: 1px solid var(--lg-glass-border);
  box-shadow: var(--lg-shadow-ambient), var(--lg-shadow-rim);
  color: var(--lg-canvas-text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.015em;
  cursor: pointer;
  outline: none;
  text-decoration: none;
  transition: transform var(--lg-duration-fast) var(--lg-spring-snappy),
              background var(--lg-duration-fast) ease,
              box-shadow var(--lg-duration-fast) ease;
  user-select: none;
}

.lg-pill-button:hover {
  transform: translateY(-1.5px) scale(1.015);
  background: var(--lg-glass-elevated);
  box-shadow: 0 24px 50px -10px rgba(0, 0, 0, 0.12), var(--lg-shadow-rim);
}

.lg-pill-button:active {
  transform: translateY(0.5px) scale(0.985);
  background: var(--lg-glass-pressed);
}

/* Trailing button-in-button circular action badge */
.lg-pill-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid var(--lg-glass-border-subtle);
  transition: transform var(--lg-duration-fast) var(--lg-spring-fluid),
              background var(--lg-duration-fast) ease;
}

.theme-dark .lg-pill-badge {
  background: rgba(255, 255, 255, 0.10);
}

.lg-pill-button:hover .lg-pill-badge {
  transform: translateX(2px) scale(1.08);
  background: rgba(0, 0, 0, 0.08);
}

.theme-dark .lg-pill-button:hover .lg-pill-badge {
  background: rgba(255, 255, 255, 0.18);
}

/* 7. FLOATING ISLAND NAVIGATION */
.lg-floating-island {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border-radius: 9999px;
  background: var(--lg-glass-secondary);
  backdrop-filter: blur(var(--lg-blur-lg)) saturate(var(--lg-saturate));
  -webkit-backdrop-filter: blur(var(--lg-blur-lg)) saturate(var(--lg-saturate));
  border: 1px solid var(--lg-glass-border);
  box-shadow: var(--lg-shadow-ambient), var(--lg-shadow-rim);
}

/* 8. WHITEBOARD & ANNOTATION FLOATING PALETTE (iPadOS / Freeform Inspired) */
.lg-whiteboard-palette {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--squircle-pill, 9999px);
  background: var(--lg-glass-elevated);
  backdrop-filter: blur(var(--lg-blur-lg)) saturate(var(--lg-saturate));
  -webkit-backdrop-filter: blur(var(--lg-blur-lg)) saturate(var(--lg-saturate));
  border: 1px solid var(--lg-glass-border);
  box-shadow: var(--lg-shadow-ambient), var(--lg-shadow-rim);
  transition: transform var(--lg-duration-fast) var(--lg-spring-fluid);
}
.lg-palette-tool {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--squircle-r-md, 14px);
  border: 1px solid transparent;
  background: transparent;
  color: var(--lg-canvas-text);
  font-size: 15px;
  cursor: pointer;
  transition: all var(--lg-duration-fast) ease;
}
.lg-palette-tool:hover {
  background: var(--lg-glass-interactive);
}
.lg-palette-tool.active {
  background: var(--lg-glass-pressed);
  border-color: rgba(0, 122, 255, 0.4);
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.2);
}

/* 9. SPATIAL ROUNDTABLE POD (Breakout Collaboration Cluster) */
.lg-roundtable-pod {
  display: flex;
  flex-direction: column;
  padding: 14px;
  border-radius: var(--squircle-r-lg, 24px);
  background: var(--lg-glass-secondary);
  backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate));
  -webkit-backdrop-filter: blur(var(--lg-blur-md)) saturate(var(--lg-saturate));
  border: 1px solid var(--lg-glass-border);
  box-shadow: var(--lg-shadow-ambient), var(--lg-shadow-rim);
  position: relative;
  overflow: hidden;
}
.lg-pod-halo {
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  border: 2px solid rgba(52, 211, 153, 0.35);
  pointer-events: none;
  animation: pulse-halo 2.8s infinite ease-in-out;
}
@keyframes pulse-halo {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.02); }
}

/* 10. DYNAMIC ISLAND VOICE QUEUE CAPSULE STATE */
.island-voice-queue-state {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 4px 14px;
}
.island-voice-queue-state.active {
  display: flex;
}
.queue-avatar-ring {
  width: 24px;
  height: 24px;
  border-radius: 9999px;
  border: 2px solid #f59e0b;
  overflow: hidden;
}

/* ============================================================================
 * ACCESSIBILITY & FALLBACK HARNESS
 * ============================================================================ */

/* Reduced Transparency Mode: Replaces glass with crisp opaque high-contrast surface */
@media (prefers-reduced-transparency: reduce) {
  .lg-shell, .lg-pill-button, .lg-floating-island {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    filter: none !important;
    background: var(--lg-canvas-bg) !important;
    border-color: rgba(120, 120, 128, 0.4) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15) !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .lg-shell, .lg-pill-button, .lg-floating-island {
    border-width: 2px !important;
    border-color: currentColor !important;
  }
}

/* Reduced Motion Mode */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================================================================
 * YOUTUBE 1,000+ VIDEO INTELLIGENCE AUDIT UPGRADES (v5.2)
 * ============================================================================
 * Codified directly from the Top 50 global creators and reverse-engineered
 * Figma/VisionOS/Three.js masterclasses.
 * ============================================================================ */

/* 1. Planar Hardware Font Antialiasing (Bans Chromium 3D Resampling Blur) */
.glass-antialiased {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transform: translateZ(0);
  backface-visibility: hidden;
  text-rendering: optimizeLegibility;
}

/* 2. Top-Tier Reverse-Engineered Figma Recipe */
.figma-glass-elite {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.02) 100%), rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(40px) saturate(160%);
  -webkit-backdrop-filter: blur(40px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 20px 48px -12px rgba(0, 0, 0, 0.12), inset 0 1px 1px 0 rgba(255, 255, 255, 0.25);
  border-radius: var(--lg-bezel-outer-radius);
}

/* 3. Pointer-Tracking Dynamic Specular Highlight (Mouse Parallax Shimmer) */
.glass-shimmer {
  position: relative;
  overflow: hidden;
}
.glass-shimmer::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle 350px at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.18), transparent 70%);
  opacity: 0;
  transition: opacity 250ms ease;
  z-index: 2;
  border-radius: inherit;
}
.glass-shimmer:hover::before {
  opacity: 1;
}

/* 4. Tabular Numeral Baseline (Bans Live Metric Layout Jitter) */
.tabular-nums, .font-tabular {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* ============================================================================
 * MODULAR COMPONENT ARMORY & PRIMITIVES (v5.3 Universal Drop-In Architecture)
 * ============================================================================
 * Token-based, 100% theme-adaptive (Light & Dark Mode invariant)
 * Strict zero-inline-style mandate for external project interoperability.
 * ============================================================================ */

/* --- A. Common Building Blocks --- */
.lg-recessed-box {
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-md, 18px);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.06);
  color: var(--lg-canvas-text);
  box-sizing: border-box;
}

.lg-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  background: var(--lg-pill-bg);
  border: 1px solid var(--lg-pill-border);
  color: var(--lg-canvas-text);
  font-size: 11.5px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  user-select: none;
}

.lg-tab-group {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 6px;
  padding: 4px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-md, 16px);
  box-sizing: border-box;
}

.lg-tab-btn {
  padding: 8px 12px;
  border-radius: var(--squircle-r-sm, 12px);
  border: none;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  color: var(--lg-canvas-text-muted);
  transition: all 180ms ease;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.lg-tab-btn:hover {
  color: var(--lg-canvas-text);
}
.lg-tab-btn.active {
  background: var(--lg-tab-active-bg);
  color: var(--lg-tab-active-text);
  box-shadow: var(--lg-tab-active-shadow);
}

.lg-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: var(--squircle-r-md, 16px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: var(--lg-cta-primary-bg);
  color: var(--lg-cta-primary-text);
  font-size: 14px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: var(--lg-cta-primary-shadow);
  transition: all 200ms var(--lg-spring-fluid);
  user-select: none;
  text-decoration: none;
}
.lg-cta-btn:hover:not(:disabled) {
  transform: translateY(-1.5px) scale(1.01);
  filter: brightness(1.06);
}
.lg-cta-btn:active:not(:disabled) {
  transform: translateY(0.5px) scale(0.99);
}
.lg-cta-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.lg-secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: var(--squircle-r-sm, 12px);
  border: 1px solid var(--lg-glass-border);
  background: var(--lg-glass-interactive);
  color: var(--lg-canvas-text);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 160ms ease;
  user-select: none;
}
.lg-secondary-btn:hover {
  background: var(--lg-glass-pressed);
  transform: translateY(-1px);
}

/* --- B. Golden Anchor Primitives --- */

/* 1. GlassActionCard */
.lg-action-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border-radius: var(--squircle-r-lg, 24px);
  background: var(--lg-action-card-bg);
  border: 1px solid var(--lg-action-card-border);
  color: var(--lg-canvas-text);
  min-height: 200px;
  overflow: hidden;
  box-sizing: border-box;
  transform: perspective(1800px) rotateX(0deg) rotateY(0deg);
  transition: transform 250ms var(--lg-spring-fluid), box-shadow 250ms ease;
}
.lg-action-card:hover {
  transform: perspective(1800px) rotateX(0.8deg) rotateY(-0.8deg);
  box-shadow: 0 24px 56px -12px rgba(0, 0, 0, 0.2);
}
.lg-action-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  min-width: 0;
}
.lg-action-card-category {
  font-size: 11px;
  font-weight: 600;
  color: var(--lg-canvas-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.lg-action-card-title {
  margin: 0 0 8px 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--lg-canvas-text);
  line-height: 1.35;
}
.lg-action-card-desc {
  margin: 0;
  font-size: 13px;
  color: var(--lg-canvas-text-muted);
  line-height: 1.55;
}
.lg-action-card-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 16px;
}

/* 2. GlassMinimalTable */
.lg-minimal-table-container {
  width: 100%;
  border-radius: var(--squircle-r-lg, 24px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  overflow: hidden;
  box-sizing: border-box;
}
.lg-minimal-table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 13px;
  color: var(--lg-canvas-text);
}
.lg-minimal-table th {
  padding: 14px 18px;
  background: var(--lg-well-bg);
  color: var(--lg-canvas-text-muted);
  font-size: 11.5px;
  font-weight: 600;
  border-bottom: 1px solid var(--lg-glass-border-subtle);
  user-select: none;
}
.lg-minimal-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--lg-glass-border-subtle);
  font-variant-numeric: tabular-nums;
  transition: background 120ms ease;
}
.lg-minimal-table tr:last-child td {
  border-bottom: none;
}
.lg-minimal-table tr:hover td {
  background: var(--lg-glass-interactive);
}

/* 3. GlassMetricStrip */
.lg-metric-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  padding: 16px 20px;
  border-radius: var(--squircle-r-lg, 24px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  align-items: center;
  box-sizing: border-box;
}
.lg-metric-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 12px;
  min-width: 0;
}
.lg-metric-cell:not(:last-child) {
  border-left: 1px solid var(--lg-glass-border-subtle);
}
[dir="rtl"] .lg-metric-cell:not(:last-child) {
  border-left: none;
  border-right: 1px solid var(--lg-glass-border-subtle);
}
.lg-metric-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--lg-canvas-text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.lg-metric-label {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--lg-canvas-text-muted);
  margin-top: 4px;
}

/* 4. GlassTactileForm */
.lg-tactile-form {
  padding: 24px;
  border-radius: var(--squircle-r-lg, 24px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  box-sizing: border-box;
}
.lg-form-group {
  margin-bottom: 16px;
}
.lg-form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--lg-canvas-text-muted);
  margin-bottom: 6px;
}
.lg-form-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--squircle-r-sm, 14px);
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  color: var(--lg-canvas-text);
  font-size: 13.5px;
  font-family: inherit;
  box-sizing: border-box;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}
.lg-form-input:focus {
  border-color: var(--lg-focus-ring);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.2);
}

/* 5. GlassDynamicIsland */
.lg-dynamic-island {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  z-index: 1000;
  user-select: none;
}
.lg-island-capsule {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 16px;
  border-radius: 9999px;
  background: var(--lg-glass-elevated);
  border: 1px solid var(--lg-glass-border);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  box-shadow: var(--lg-shadow-ambient), var(--lg-shadow-rim);
  cursor: pointer;
  color: var(--lg-canvas-text);
  transition: all 240ms var(--lg-spring-fluid);
}
.lg-island-capsule:hover {
  transform: scale(1.02);
}
.lg-island-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.lg-island-dot.live {
  background: #34C759;
  box-shadow: 0 0 8px #34C759;
}
.lg-island-dot.idle {
  background: #0071E3;
  box-shadow: 0 0 8px #0071E3;
}
.lg-island-dot.warning {
  background: #FF9500;
  box-shadow: 0 0 8px #FF9500;
}
.lg-island-text {
  font-size: 12.5px;
  font-weight: 600;
  font-family: inherit;
}
.lg-island-drawer {
  margin-top: 10px;
  width: 100%;
  min-width: 340px;
  max-width: 440px;
  padding: 16px;
  border-radius: var(--squircle-r-md, 18px);
  background: var(--lg-glass-elevated);
  border: 1px solid var(--lg-glass-border);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  box-shadow: var(--lg-shadow-ambient);
  animation: lg-drawer-appear 200ms var(--lg-spring-fluid);
}
@keyframes lg-drawer-appear {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* --- C. Domain-Specific Ecosystem Components --- */

/* 1. GlassPaymentCheckout */
.lg-payment-checkout {
  padding: 24px;
  border-radius: var(--squircle-r-xl, 28px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  color: var(--lg-canvas-text);
  max-width: 440px;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.lg-checkout-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.lg-checkout-merchant {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
}
.lg-checkout-timer {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  background: var(--lg-pill-bg);
  border: 1px solid var(--lg-pill-border);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.lg-checkout-amount-box {
  text-align: center;
  padding: 20px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-md, 20px);
  margin-bottom: 20px;
}
.lg-checkout-amount-label {
  font-size: 11.5px;
  color: var(--lg-canvas-text-muted);
  margin-bottom: 6px;
}
.lg-checkout-amount-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--lg-canvas-text);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.lg-checkout-amount-unit {
  font-size: 14px;
  font-weight: 600;
  color: var(--lg-canvas-text-muted);
}
.lg-checkout-amount-subtext {
  font-size: 11.5px;
  color: var(--lg-canvas-text-muted);
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}
.lg-checkout-crypto-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-sm, 14px);
  margin-bottom: 20px;
  gap: 10px;
  min-width: 0;
}
.lg-checkout-meta-row {
  display: flex;
  justify-content: space-between;
  padding: 0 4px;
  margin-bottom: 20px;
  font-size: 11.5px;
  color: var(--lg-canvas-text-muted);
  font-variant-numeric: tabular-nums;
}

/* 2. GlassClassroomLive */
.lg-classroom-live {
  padding: 20px;
  border-radius: var(--squircle-r-xl, 32px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  color: var(--lg-canvas-text);
  max-width: 680px;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.lg-classroom-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  min-width: 0;
  gap: 12px;
}
.lg-classroom-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--squircle-r-lg, 24px);
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.lg-classroom-dock {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-md, 18px);
  gap: 10px;
  flex-wrap: wrap;
}
.lg-classroom-dock-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lg-classroom-dock-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--lg-glass-border);
  background: var(--lg-glass-interactive);
  color: var(--lg-canvas-text);
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 160ms ease;
}
.lg-classroom-dock-btn:hover {
  background: var(--lg-glass-pressed);
  transform: scale(1.05);
}
.lg-classroom-dock-btn.muted {
  background: rgba(255, 59, 48, 0.15);
  border-color: rgba(255, 59, 48, 0.4);
  color: #FF3B30;
}

/* 3. GlassResourceDropzone */
.lg-resource-dropzone {
  padding: 24px;
  border-radius: var(--squircle-r-xl, 28px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  color: var(--lg-canvas-text);
  max-width: 520px;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.lg-dropzone-well {
  border: 2px dashed var(--lg-glass-border);
  border-radius: var(--squircle-r-md, 18px);
  padding: 28px 18px;
  text-align: center;
  cursor: pointer;
  background: var(--lg-well-bg);
  transition: all 180ms ease;
}
.lg-dropzone-well:hover, .lg-dropzone-well.dragging {
  border-color: var(--lg-focus-ring);
  background: var(--lg-glass-interactive);
}
.lg-dropzone-icon {
  font-size: 32px;
  margin-bottom: 8px;
}
.lg-dropzone-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--lg-canvas-text);
  margin-bottom: 4px;
}
.lg-dropzone-subtext {
  font-size: 11px;
  color: var(--lg-canvas-text-muted);
}
.lg-dropzone-progress {
  margin-top: 14px;
}
.lg-progress-track {
  height: 6px;
  width: 100%;
  background: var(--lg-well-bg);
  border-radius: 9999px;
  overflow: hidden;
  border: 1px solid var(--lg-well-border);
}
.lg-progress-fill {
  height: 100%;
  background: var(--lg-cta-primary-bg);
  border-radius: 9999px;
  transition: width 150ms ease;
}

/* 4. GlassRoleAccessMatrix */
.lg-role-matrix {
  padding: 24px;
  border-radius: var(--squircle-r-xl, 28px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  color: var(--lg-canvas-text);
  max-width: 580px;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.lg-matrix-role-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 4px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-sm, 14px);
  margin-bottom: 16px;
}
.lg-matrix-role-btn {
  padding: 8px 4px;
  border: none;
  border-radius: var(--squircle-r-sm, 10px);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  color: var(--lg-canvas-text-muted);
  transition: all 160ms ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.lg-matrix-role-btn.active {
  background: var(--lg-tab-active-bg);
  color: var(--lg-tab-active-text);
  box-shadow: var(--lg-tab-active-shadow);
}
.lg-matrix-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.lg-matrix-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-sm, 12px);
  font-size: 12.5px;
  color: var(--lg-canvas-text);
}
.lg-matrix-toggle {
  width: 42px;
  height: 24px;
  border-radius: 9999px;
  background: var(--lg-glass-border);
  position: relative;
  cursor: pointer;
  border: none;
  transition: background 200ms ease;
}
.lg-matrix-toggle.active {
  background: #34C759;
}
.lg-matrix-toggle-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #FFFFFF;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 200ms ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}
[dir="rtl"] .lg-matrix-toggle-thumb {
  left: auto;
  right: 2px;
}
.lg-matrix-toggle.active .lg-matrix-toggle-thumb {
  transform: translateX(18px);
}
[dir="rtl"] .lg-matrix-toggle.active .lg-matrix-toggle-thumb {
  transform: translateX(-18px);
}

/* 5. GlassOutreachQueue */
.lg-outreach-queue {
  padding: 24px;
  border-radius: var(--squircle-r-xl, 28px);
  background: var(--lg-glass-secondary);
  border: 1px solid var(--lg-glass-border);
  color: var(--lg-canvas-text);
  max-width: 580px;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.lg-outreach-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}
.lg-outreach-channels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}
.lg-outreach-channel-btn {
  padding: 10px;
  border-radius: var(--squircle-r-sm, 14px);
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  color: var(--lg-canvas-text-muted);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  font-weight: 600;
  transition: all 160ms ease;
}
.lg-outreach-channel-btn.active {
  background: var(--lg-tab-active-bg);
  color: var(--lg-tab-active-text);
  border-color: transparent;
  box-shadow: var(--lg-tab-active-shadow);
}
.lg-outreach-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}
.lg-outreach-metric-box {
  padding: 12px;
  background: var(--lg-well-bg);
  border: 1px solid var(--lg-well-border);
  border-radius: var(--squircle-r-sm, 12px);
  text-align: center;
}
.lg-outreach-metric-num {
  font-size: 18px;
  font-weight: 800;
  color: var(--lg-canvas-text);
  font-variant-numeric: tabular-nums;
}
.lg-outreach-metric-title {
  font-size: 11px;
  color: var(--lg-canvas-text-muted);
  margin-top: 4px;
}