/* =========================================================
   VISION EDUCATION — ABSOLUTE THEME ENGINE v3
   Strict Dark Mode - Light Mode Purged
   ========================================================= */

:root {
  /* Core Backgrounds - Force Dark */
  --bg: #05080f;
  --bg-card: #0d1117;
  --bg-card-hover: #111827;
  --bg-sidebar: #080b12;
  --bg-input: rgba(255, 255, 255, 0.05);
  --bg-hero: #07090f;
  --bg-header: rgba(5, 8, 15, 0.85);

  /* Brand Colors */
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-dim: rgba(99, 102, 241, 0.12);
  --gold: #fbbf24;
  --indigo: #6366f1;
  --emerald: #10b981;
  --red: #f87171;

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

  /* Borders & Interactive */
  --border: rgba(255, 255, 255, 0.07);
  --border-bright: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(99, 102, 241, 0.35);
  --border-input: rgba(255, 255, 255, 0.12);

  /* Status */
  --success: #22c55e;
  --error: #f87171;
  --warning: #f59e0b;

  /* Spacing & Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --font-main: "Outfit", sans-serif;

  /* Shadows - Deep Depth */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.7);
  --shadow-premium: 0 20px 60px rgba(0, 0, 0, 0.8);

  --brand-accent: #818cf8;
}

/* Global Reset to Force Dark */
html, body {
  background-color: var(--bg) !important;
  color: var(--text-primary) !important;
}

/* YouTube Brand Utility */
.social-youtube {
  color: var(--text-secondary);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.social-youtube:hover {
  color: #ff0000 !important; /* Official YouTube Red */
  transform: translateY(-1px);
  filter: drop-shadow(0 0 8px rgba(255, 0, 0, 0.3));
}

/* Light Mode Purged - No Overrides Allowed */