/* ═══════════════════════════════════════════════
   StudentAssist · Theme System
   Vibrant + Gamified Dark Theme
═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Core Palette */
  --bg:        #080811;
  --surface:   #0f0f1e;
  --surface2:  #171728;
  --surface3:  #1e1e35;
  --border:    #252545;
  --border2:   #32326a;

  /* Text */
  --text:      #eeeeff;
  --text-2:    #b0b0d0;
  --muted:     #6a6a9a;
  --dim:       #2a2a50;

  /* Semantic Colors */
  --green:     #22c55e;
  --green-glow: rgba(34, 197, 94, 0.3);
  --red:       #f43f5e;
  --red-glow:  rgba(244, 63, 94, 0.3);
  --amber:     #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.3);
  --purple:    #a855f7;
  --purple-glow: rgba(168, 85, 247, 0.3);
  --blue:      #3b82f6;

  /* Module Accent (updated dynamically by JS) */
  --module-color: #00d4ff;
  --module-glow:  rgba(0, 212, 255, 0.25);

  /* Card-level color (set inline per hub-card) */
  --card-color: #00d4ff;

  /* Layout */
  --radius:    16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --topbar-h:  52px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.6);
}

/* ─── Base ─── */
html {
  font-family: 'Plus Jakarta Sans', 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 15px;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

* { box-sizing: border-box; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ─── Typography ─── */
h1 { font-size: 2rem; font-weight: 900; margin: 0; letter-spacing: -0.03em; }
h2 { font-size: 1.5rem; font-weight: 800; margin: 0 0 0.5rem 0; letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; font-weight: 700; margin: 0 0 0.5rem 0; }
p  { margin: 0 0 0.5rem 0; }

a {
  color: var(--module-color);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9em;
}

.mono { font-family: 'JetBrains Mono', monospace; }

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes bounceIn {
  0%   { opacity: 0; transform: scale(0.3); }
  50%  { transform: scale(1.08); }
  70%  { transform: scale(0.96); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.12); }
  100% { transform: scale(1); }
}

@keyframes xpGain {
  0%   { opacity: 1; transform: translateY(0) scale(1); }
  80%  { opacity: 1; transform: translateY(-28px) scale(1.1); }
  100% { opacity: 0; transform: translateY(-36px) scale(0.9); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 8px var(--module-glow); }
  50%       { box-shadow: 0 0 20px var(--module-glow), 0 0 40px var(--module-glow); }
}

@keyframes shimmer {
  from { background-position: -200% 0; }
  to   { background-position: 200% 0; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-6px); }
  75%       { transform: translateX(6px); }
}

@keyframes cardReveal {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}