/* css/design-system.css */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fcf4ff; --surface: var(--bg);
  --surface-lo: #f8edff; --surface-c: #f2e2ff;
  --surface-ch: #eedcff; --surface-chh: #e9d5ff;
  --surface-dim: #e3caff; --surface-0: #ffffff;
  --primary: #b60051; --primary-c: #ff7198; --primary-dim: #a00047;
  --on-primary: #ffeff0; --on-primary-c: #4d001e;
  --secondary: #006571; --secondary-c: #26e6ff; --on-secondary-c: #004f59;
  --tertiary: #6d5a00; --tertiary-c: #fdd400; --on-tertiary-c: #594a00;
  --on-bg: #37274d; --on-surface: #37274d; --on-surface-v: #66547d;
  --outline: #826f9a; --outline-v: #baa4d3;
  --shadow-ambi: 0 20px 40px -10px rgba(182,0,81,0.12);
  --shadow-card: 0 8px 24px -4px rgba(182,0,81,0.10);
  --font: 'Plus Jakarta Sans', sans-serif;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--surface-c); }
::-webkit-scrollbar-thumb { background: var(--outline-v); border-radius: 99px; }

body { font-family: var(--font); background: var(--bg); color: var(--on-bg); overflow-x: hidden; }

/* Buttons */
.btn-primary, .btn-primary-sm {
  background: var(--primary); color: var(--on-primary);
  border: none; cursor: pointer; font-family: var(--font); font-weight: 700;
  border-radius: 999px; text-decoration: none; display: inline-block;
  box-shadow: inset 0 -4px 0 var(--primary-dim), var(--shadow-ambi);
  transition: box-shadow .1s, transform .1s, background .2s;
}
.btn-primary { font-size: 1.05rem; padding: .95rem 2.4rem; }
.btn-primary-sm { font-size: .85rem; padding: .55rem 1.4rem; box-shadow: inset 0 -3px 0 var(--primary-dim); }
.btn-primary:hover, .btn-primary-sm:hover { background: #c8005a; }
.btn-primary:active, .btn-primary-sm:active { box-shadow: none; transform: translateY(3px); }
.btn-ghost-arrow {
  background: none; border: none; cursor: pointer; font-family: var(--font);
  font-weight: 600; font-size: .98rem; color: var(--on-surface-v);
  display: inline-flex; align-items: center; gap: .4rem; text-decoration: none;
  transition: color .2s; padding: 0;
}
.btn-ghost-arrow:hover { color: var(--primary); }
.btn-ghost-arrow .arrow { transition: transform .22s cubic-bezier(0.34,1.56,0.64,1); }
.btn-ghost-arrow:hover .arrow { transform: translateX(5px); }

/* Logo */
.logo {
  font-size: 1.45rem; font-weight: 800; letter-spacing: -0.03em;
  color: var(--on-bg); text-decoration: none;
  display: inline-flex; align-items: center; gap: .5rem;
}
.logo-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); flex-shrink: 0; }

/* Chip */
.chip {
  background: var(--surface-c); color: var(--on-surface);
  border: none; cursor: pointer; font-family: var(--font); font-weight: 600; font-size: .875rem;
  padding: .52rem 1.25rem; border-radius: 999px;
  transition: background .18s, color .18s, transform .15s cubic-bezier(0.34,1.56,0.64,1);
  display: inline-flex; align-items: center; gap: .4rem;
}
.chip:hover { transform: scale(1.07); background: var(--surface-ch); }
.chip.active { background: var(--primary); color: var(--on-primary); }

/* Badge */
.badge {
  position: absolute; top: -11px; right: 14px; z-index: 3;
  font-size: .62rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  padding: .28rem .75rem; border-radius: 999px;
}
.badge-hot  { background: var(--primary);    color: var(--on-primary); }
.badge-new  { background: var(--tertiary-c); color: var(--on-tertiary-c); }
.badge-top  { background: var(--secondary-c); color: var(--on-secondary-c); }

/* Thumb color themes */
.th-galaxy { background: linear-gradient(135deg, #1a0a2e 0%, #2d0b7a 45%, #6b21a8 100%); }
.th-jelly  { background: linear-gradient(135deg, #4ade80 0%, #22d3ee 50%, #818cf8 100%); }
.th-karts  { background: linear-gradient(135deg, #f97316 0%, #dc2626 100%); }
.th-ninja  { background: linear-gradient(135deg, #16a34a 0%, #0d5627 100%); }
.th-burger { background: linear-gradient(135deg, #fbbf24 0%, #ea580c 100%); }
.th-beat   { background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%); }
.th-puzzle { background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%); }
.th-tower  { background: linear-gradient(135deg, #84cc16 0%, #15803d 100%); }
.th-sky    { background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%); }

/* Animations */
@keyframes reveal-up { from { opacity:0; transform:translateY(28px); } to { opacity:1; transform:translateY(0); } }
.reveal { animation: reveal-up .6s cubic-bezier(0.16,1,0.3,1) both; }
.d-1{animation-delay:.05s} .d-2{animation-delay:.15s} .d-3{animation-delay:.25s}
.d-4{animation-delay:.35s} .d-5{animation-delay:.45s} .d-6{animation-delay:.55s}

/* ── Shared Nav ── */
nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(252,244,255,0.88); backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(186,164,211,0.25);
}
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { text-decoration: none; color: var(--on-surface-v); font-weight: 500; font-size: 0.92rem; transition: color .2s; }
.nav-links a:hover { color: var(--primary); }

/* ── Shared Footer ── */
footer { background: var(--surface-c); padding: 3.5rem 3rem 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 2.5rem; }
.footer-brand p { color: var(--on-surface-v); font-size: .88rem; margin-top: .9rem; max-width: 280px; line-height: 1.65; }
.footer-col h4 { font-weight: 700; font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--on-bg); margin-bottom: 1.1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .65rem; }
.footer-col a { text-decoration: none; color: var(--on-surface-v); font-size: .88rem; transition: color .18s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 1.5rem; border-top: 1px solid rgba(186,164,211,.35); font-size: .8rem; color: var(--on-surface-v); }

@media (max-width: 768px) {
  nav { padding: .875rem 1.5rem; }
  .nav-links { display: none; }
  footer { padding: 2.5rem 1.5rem 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 480px) {
  nav { padding: .75rem 1rem; }
  footer { padding: 2rem 1rem 1.5rem; }
  .footer-bottom { flex-direction: column; gap: .5rem; text-align: center; }
}

/* Game page layout helpers */
.hidden { display: none !important; }

/* ── Game pages: responsive ── */
@media (max-width: 700px) {
  .game-layout {
    grid-template-columns: 1fr !important;
    padding: 1rem !important;
  }
  .sidebar { display: none !important; }
  .game-center { padding: 0 !important; justify-content: center; }
}