/* ===================================================
   Lavee Design System
   Import this file first in every page/template.
   =================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Space+Mono:wght@400;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ===================================================
   CSS Custom Properties — Dark Mode (default)
   =================================================== */
:root {
  /* Surfaces */
  --bg:        #1a1a2e;
  --surface:   #16213e;
  --surface2:  #0f3460;
  --surface3:  #0a2240;
  --border:    #1e3060;

  /* Accents */
  --accent:    #f0c040;   /* gold — primary CTA */
  --accent-h:  #ffd060;   /* gold hover */
  --accent2:   #ff6b8a;   /* pink — speed category */
  --accent3:   #5af0d0;   /* teal — memory category */
  --accent4:   #b45aff;   /* purple — puzzle category */
  --accent5:   #60c0ff;   /* blue — info / links */

  /* Text */
  --text:      #ffffff;
  --text-dim:  #c0c8e0;
  --muted:     #a0aec0;

  /* Semantic */
  --success:   #4caf7d;
  --danger:    #ff5566;
  --warning:   #f0c040;

  /* Layout */
  --radius:    8px;
  --radius-lg: 16px;
  --topnav-h:  56px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.6);

  /* Fonts */
  --font-display: 'Bebas Neue', sans-serif;
  --font-mono:    'Space Mono', monospace;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Transitions */
  --transition: 0.2s ease;
  --transition-theme: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  transition: var(--transition-theme);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  transition: var(--transition-theme);
}

a {
  color: var(--accent5);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

/* ===================================================
   Typography
   =================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  color: var(--text);
  line-height: 1.1;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }

p { color: var(--text-dim); max-width: 65ch; }

.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.score-display {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

/* ===================================================
   Layout Helpers
   =================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-sm {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-body {
  padding-top: calc(var(--topnav-h) + 32px);
  padding-bottom: 60px;
  min-height: 100vh;
}

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.gap-4 { gap: 32px; }

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

/* ===================================================
   Top Nav
   =================================================== */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topnav-h);
  background: rgba(26,26,46,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  z-index: 1000;
  gap: 12px;
  transition: background var(--transition), border-color var(--transition);
}


.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo:hover { color: var(--accent-h); }

.nav-sep {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
}

.nav-game {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav-link:hover { color: var(--text); background: var(--surface2); }
.nav-link.active { color: var(--accent); }

/* Theme Toggle Button */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: var(--surface2);
  transform: rotate(15deg);
}

/* ===================================================
   Buttons
   =================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: #1a1a2e;
  box-shadow: 0 0 20px rgba(240,192,64,0.3);
}
.btn-primary:hover {
  background: var(--accent-h);
  box-shadow: 0 0 30px rgba(240,192,64,0.5);
  color: #1a1a2e;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: transparent; }

.btn-ghost {
  background: transparent;
  color: var(--muted);
}
.btn-ghost:hover { color: var(--text); background: var(--surface); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-sm { padding: 6px 14px; font-size: 0.75rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }

/* ===================================================
   Cards
   =================================================== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 20px rgba(240,192,64,0.1);
  transform: translateY(-2px);
}

/* Game Card */
.game-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  display: flex;
  flex-direction: column;
}
.game-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 20px rgba(240,192,64,0.1);
  transform: translateY(-3px);
}

.game-card-icon {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface2);
  font-size: 3rem;
}

.game-card-body {
  padding: 16px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.game-card-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.05em;
  color: var(--text);
}

.game-card-sub {
  font-size: 0.82rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

.game-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: auto;
  width: fit-content;
}
.tag-memory  { background: rgba(90,240,208,0.15); color: var(--accent3); }
.tag-speed   { background: rgba(255,107,138,0.15); color: var(--accent2); }
.tag-puzzle  { background: rgba(180,90,255,0.15);  color: var(--accent4); }
.tag-strategy{ background: rgba(240,192,64,0.15);  color: var(--accent); }

/* ===================================================
   Forms
   =================================================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.form-input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(240,192,64,0.15);
}
.form-input::placeholder { color: var(--muted); }


.form-error {
  font-size: 0.82rem;
  color: var(--danger);
  font-family: var(--font-mono);
}

/* ===================================================
   Alerts / Banners
   =================================================== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  border-left: 3px solid;
}
.alert-success { background: rgba(76,175,125,0.1); border-color: var(--success); color: var(--success); }
.alert-danger   { background: rgba(255,85,102,0.1);  border-color: var(--danger);  color: var(--danger); }
.alert-warning  { background: rgba(240,192,64,0.1);  border-color: var(--warning); color: var(--warning); }

/* ===================================================
   Filter Tabs (game hub)
   =================================================== */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  padding: 7px 18px;
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover  { border-color: var(--accent); color: var(--accent); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #1a1a2e; }

/* ===================================================
   Stats / Dashboard Widgets
   =================================================== */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ===================================================
   Leaderboard Table
   =================================================== */
.lb-table {
  width: 100%;
  border-collapse: collapse;
}
.lb-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.lb-table td {
  padding: 12px;
  border-bottom: 1px solid rgba(30,48,96,0.5);
  color: var(--text-dim);
  font-size: 0.9rem;
}
.lb-table tr:hover td { background: var(--surface2); }
.lb-rank {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--muted);
}
.lb-rank.gold   { color: #f0c040; }
.lb-rank.silver { color: #c0c0c0; }
.lb-rank.bronze { color: #cd7f32; }

/* ===================================================
   Achievement Badges
   =================================================== */
.achievement {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.achievement.unlocked { border-color: var(--accent); }
.achievement-icon { font-size: 2rem; }
.achievement-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}
.achievement-desc { font-size: 0.78rem; color: var(--muted); }

/* ===================================================
   Overlays / Modals
   =================================================== */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(26,26,46,0.93);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 20px;
}


.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

/* ===================================================
   Hero Section (landing page)
   =================================================== */
.hero {
  padding: calc(var(--topnav-h) + 80px) 20px 80px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: 0.06em;
  line-height: 1;
}

.hero-title span { color: var(--accent); }

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 520px;
  text-align: center;
}

/* ===================================================
   Section
   =================================================== */
.section {
  padding: 60px 0;
}

.section-header {
  margin-bottom: 32px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  letter-spacing: 0.05em;
}

/* ===================================================
   Streak Badge
   =================================================== */
.streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(240,192,64,0.12);
  border: 1px solid rgba(240,192,64,0.3);
  border-radius: 99px;
  padding: 4px 14px 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
}

/* ===================================================
   Divider
   =================================================== */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

/* ===================================================
   Utility
   =================================================== */
.hidden  { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.text-accent  { color: var(--accent); }
.text-muted   { color: var(--muted); }
.text-center  { text-align: center; }
.text-mono    { font-family: var(--font-mono); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* ===================================================
   Avatar
   =================================================== */
.avatar {
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  flex-shrink: 0;
  user-select: none;
  line-height: 1;
}
.avatar-sm  { width: 32px;  height: 32px;  font-size: 14px; }
.avatar-md  { width: 48px;  height: 48px;  font-size: 20px; }
.avatar-lg  { width: 72px;  height: 72px;  font-size: 30px; }
.avatar-xl  { width: 96px;  height: 96px;  font-size: 40px; }

.avatar-gold   { background: rgba(240,192,64,0.18);  color: #f0c040; border: 2px solid rgba(240,192,64,0.4); }
.avatar-teal   { background: rgba(90,240,208,0.18);  color: #5af0d0; border: 2px solid rgba(90,240,208,0.4); }
.avatar-pink   { background: rgba(255,107,138,0.18); color: #ff6b8a; border: 2px solid rgba(255,107,138,0.4); }
.avatar-purple { background: rgba(180,90,255,0.18);  color: #b45aff; border: 2px solid rgba(180,90,255,0.4); }
.avatar-blue   { background: rgba(96,192,255,0.18);  color: #60c0ff; border: 2px solid rgba(96,192,255,0.4); }
.avatar-green  { background: rgba(77,255,145,0.18);  color: #4dff91; border: 2px solid rgba(77,255,145,0.4); }
.avatar-red    { background: rgba(255,85,102,0.18);  color: #ff5566; border: 2px solid rgba(255,85,102,0.4); }
.avatar-orange { background: rgba(255,160,80,0.18);  color: #ffa050; border: 2px solid rgba(255,160,80,0.4); }

/* Swatch picker (settings page) */
.avatar-swatch {
  width: 40px; height: 40px;
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid transparent;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 16px;
  text-transform: uppercase;
  transition: transform 0.15s, border-color 0.15s;
}
.avatar-swatch:hover    { transform: scale(1.12); }
.avatar-swatch.selected { border-color: var(--text); transform: scale(1.15); }

/* ===================================================
   Scrollbar
   =================================================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ===================================================
   Responsive
   =================================================== */
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .hero { padding-top: calc(var(--topnav-h) + 40px); }
  .page-body { padding-top: calc(var(--topnav-h) + 20px); }
  .modal { padding: 24px; }
  .topnav { padding: 0 14px; }
}

@media (max-width: 480px) {
  .nav-links .nav-link:not(.nav-link-important) { display: none; }
  .grid-auto { grid-template-columns: 1fr 1fr; gap: 12px; }
}