:root {
  /* v2: jungle palette (matches play.html) */
  --bg-1: #e7fbe0;
  --bg-2: #fff4d6;
  --bg-3: #ffe0f0;
  --bg-base: #f4fff0;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --card: #ffffff;
  --ink: #112619;
  --ink-soft: #4a6655;
  --line: rgba(34, 110, 60, 0.16);
  --line-strong: rgba(34, 110, 60, 0.32);
  --pink: #ec4899;
  --pink-soft: #fce0ee;
  --purple: #16a34a;
  --purple-soft: #d6f5dd;
  --blue: #14b8a6;
  --blue-soft: #cdf5ee;
  --gold: #facc15;
  --green: #22c55e;
  --red: #ef4444;
  --shadow-sm: 0 2px 10px rgba(20, 90, 50, 0.12);
  --shadow-md: 0 10px 30px rgba(20, 90, 50, 0.20);
  --shadow-lg: 0 28px 80px rgba(20, 90, 50, 0.28);
  --grad-primary: linear-gradient(135deg, #ec4899 0%, #16a34a 55%, #facc15 100%);
  --grad-warm: linear-gradient(135deg, #ec4899 0%, #16a34a 100%);
  --ring: 0 0 0 4px rgba(22, 163, 74, 0.25);
}
html[data-theme="dark"] {
  --bg-1: #0f2a18;
  --bg-2: #2a2510;
  --bg-3: #2a142a;
  --bg-base: #07140d;
  --panel: rgba(18, 30, 22, 0.78);
  --panel-strong: rgba(18, 30, 22, 0.94);
  --card: #122019;
  --ink: #e8ffe8;
  --ink-soft: #8fb39a;
  --line: rgba(120, 200, 140, 0.16);
  --line-strong: rgba(120, 200, 140, 0.32);
  --pink-soft: #3a1530;
  --purple-soft: #133e22;
  --blue-soft: #0d3a36;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.6);
  --ring: 0 0 0 4px rgba(120, 200, 140, 0.30);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Nunito', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 800px at 10% 0%, var(--bg-1) 0%, transparent 60%),
    radial-gradient(1000px 700px at 90% 10%, var(--bg-2) 0%, transparent 55%),
    radial-gradient(1200px 900px at 50% 100%, var(--bg-3) 0%, transparent 60%),
    var(--bg-base);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
body::before {
  content: "";
  position: fixed; inset: -10%;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(600px 400px at 20% 30%, rgba(255, 93, 143, 0.10), transparent 60%),
    radial-gradient(700px 500px at 80% 70%, rgba(139, 92, 246, 0.10), transparent 60%);
  animation: bgDrift 18s ease-in-out infinite alternate;
}
@keyframes bgDrift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-3%, 2%) scale(1.08); }
}

::selection { background: rgba(139, 92, 246, 0.28); color: var(--ink); }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--line-strong), var(--line));
  border-radius: 99px;
  border: 3px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--purple); background-clip: padding-box; }

a { color: var(--purple); text-decoration: none; font-weight: 700; transition: color .15s ease; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
button:focus-visible, a:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 12px; }

input, textarea, select {
  font: inherit; color: inherit;
  background: var(--card);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 11px 14px;
  width: 100%;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
input:hover, textarea:hover, select:hover { border-color: var(--purple); }
input:focus, textarea:focus, select:focus {
  border-color: var(--purple);
  box-shadow: var(--ring);
}

.container { max-width: 1100px; margin: 0 auto; padding: 24px; }

.site-header {
  position: sticky; top: 12px; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px;
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--line);
  border-radius: 20px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s ease, background .2s ease;
}
.site-header:hover { box-shadow: var(--shadow-md); }
.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: 'Fredoka', sans-serif;
  font-weight: 700; font-size: 1.4rem;
  color: var(--ink);
  padding: 4px 8px; margin: -4px -8px;
  border-radius: 14px;
  transition: transform .15s ease, background .15s ease;
}
.brand:hover { text-decoration: none; background: var(--panel-strong); transform: translateY(-1px); }
.brand:hover .logo { transform: rotate(-8deg) scale(1.05); }
.brand .logo {
  width: 38px; height: 38px;
  background: var(--grad-warm);
  border-radius: 12px;
  display: grid; place-items: center;
  box-shadow: 0 6px 18px rgba(139, 92, 246, 0.35);
  transition: transform .2s cubic-bezier(.2,.9,.3,1.4);
}
.brand .logo svg { width: 26px; height: 26px; }
.site-nav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.site-nav a, .site-nav .nav-btn {
  position: relative;
  padding: 9px 14px;
  border-radius: 11px;
  font-weight: 700;
  color: var(--ink-soft);
  border: 1px solid transparent;
  font-size: 0.92rem;
  transition: color .15s ease, background .15s ease, border-color .15s ease;
}
.site-nav a:hover, .site-nav .nav-btn:hover {
  color: var(--ink);
  background: var(--panel-strong);
  border-color: var(--line);
  text-decoration: none;
}
.site-nav a.active {
  color: white;
  background: var(--grad-warm);
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(139, 92, 246, 0.35);
}
.site-nav a.active:hover { color: white; background: var(--grad-warm); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px;
  border-radius: 12px;
  font-weight: 800;
  background: var(--card);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  transition: transform .12s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .55s ease;
  pointer-events: none;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--purple); }
.btn:hover::after { transform: translateX(120%); }
.btn:active { transform: translateY(0); }
.btn.primary {
  background: var(--grad-warm);
  color: white; border-color: transparent;
  box-shadow: 0 10px 26px rgba(139, 92, 246, 0.38);
}
.btn.primary:hover { box-shadow: 0 14px 32px rgba(139, 92, 246, 0.50); border-color: transparent; }
.btn.danger { color: var(--red); border-color: var(--red); }
.btn.danger:hover { background: var(--red); color: white; }
.btn.full { width: 100%; }
.btn:disabled { opacity: 0.55; transform: none; box-shadow: none; cursor: not-allowed; }
.btn:disabled:hover { transform: none; box-shadow: none; }
.btn:disabled::after { display: none; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { box-shadow: var(--shadow-md); border-color: var(--line-strong); }

h1 { font-family: 'Fredoka', sans-serif; font-weight: 700; font-size: 2.2rem; margin-bottom: 6px; }
h2 { font-family: 'Fredoka', sans-serif; font-weight: 700; font-size: 1.4rem; margin-bottom: 10px; }
.muted { color: var(--ink-soft); font-weight: 600; }

.announcement {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 16px 20px;
  background:
    linear-gradient(135deg, rgba(255, 93, 143, 0.10), rgba(139, 92, 246, 0.10) 50%, rgba(56, 189, 248, 0.10));
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}
.announcement::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--grad-warm);
}
.announcement .icon { font-size: 1.5rem; line-height: 1; }
.announcement .body { flex: 1; }
.announcement .meta { font-size: 0.78rem; color: var(--ink-soft); font-weight: 700; margin-top: 2px; }

.toast-wrap {
  position: fixed; right: 16px; bottom: 16px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 100; pointer-events: none;
}
.toast {
  background: var(--panel-strong);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  padding: 11px 16px;
  box-shadow: var(--shadow-md);
  font-weight: 700;
  animation: tIn .3s cubic-bezier(.2,.9,.3,1.4);
}
@keyframes tIn {
  from { transform: translateY(14px) scale(0.96); opacity: 0; }
  to { transform: none; opacity: 1; }
}

@media (max-width: 700px) {
  .container { padding: 14px; }
  .site-header { padding: 10px 12px; flex-wrap: wrap; gap: 10px; top: 8px; }
  h1 { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}