/* ===== Modern, playful edu theme ===== */

/* Font & tokens */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap");

:root{
  --bg: #f7faff;
  --text: #1b2559;
  --muted: #6070a0;
  --card: #ffffff;
  --line: #e9eef9;
  --accent: #5b8cff;
  --accent-2: #27c1a5;
  --accent-3: #ffb02e;
  --danger: #ff6b6b;

  --radius-xl: 20px;
  --radius-lg: 14px;
  --shadow-sm: 0 4px 12px rgba(25, 35, 80, 0.08);
  --shadow-md: 0 8px 24px rgba(25, 35, 80, 0.12);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#0c1021;
    --text:#eef2ff;
    --muted:#aab4dd;
    --card:#121734;
    --line:#1d2450;
    --accent:#6aa9ff;
    --accent-2:#2bd3b6;
    --accent-3:#ffc562;
    --danger:#ff7e7e;
    --shadow-sm: 0 4px 14px rgba(0,0,0,.25);
    --shadow-md: 0 10px 26px rgba(0,0,0,.35);
  }
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, rgba(91,140,255,.15), transparent 60%),
              radial-gradient(900px 500px at 100% 0%, rgba(39,193,165,.14), transparent 60%),
              var(--bg);
  color: var(--text);
}

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

.container{ max-width:1100px; margin:0 auto; padding:20px; }

.site-header{
  position: sticky; top:0; z-index: 50;
  backdrop-filter: saturate(180%) blur(8px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--line);
}
.brand a{ font-weight:800; font-size:20px; color:var(--text); letter-spacing:.2px; }
.nav a{
  margin-left:6px; font-weight:600; color:var(--text);
  padding:8px 12px; border-radius:12px; transition: all .18s ease;
}
.nav a:hover{ background: var(--line); text-decoration:none; }
.nav .primary{
  background: linear-gradient(135deg, var(--accent), #7eb1ff);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.nav .primary:hover{ transform: translateY(-1px); box-shadow: var(--shadow-md); }
.nav .danger{ color: var(--danger); }

.hero{
  padding: 28px 0 18px;
  display:grid; grid-template-columns: 1.1fr .9fr; gap:24px; align-items:center;
}
.hero h1{
  margin: 0 0 10px; font-size: clamp(28px, 4.5vw, 44px); line-height: 1.05; font-weight: 800;
}
.hero p{ margin: 0 0 16px; color: var(--muted); font-size: 16px; }
.cta{ display:flex; gap:12px; flex-wrap:wrap; margin-top:10px; }
.btn{
  display:inline-flex; align-items:center; gap:8px; padding:12px 16px;
  border-radius: 14px; text-decoration:none; border: 1px solid var(--line);
  background:#fff; color: var(--text); box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, background .2s;
}
.btn:hover{ transform: translateY(-1px); box-shadow: var(--shadow-md); text-decoration:none; }
.btn-primary{
  background: linear-gradient(135deg, var(--accent), #7eb1ff);
  color:#fff; border: none;
}
.badges{ display:flex; gap:10px; flex-wrap:wrap; margin-top:12px; }
.badge{
  font-size:12px; font-weight:600; color:#fff; padding:6px 10px; border-radius:999px;
  box-shadow: var(--shadow-sm);
}
.badge.mint{ background: linear-gradient(135deg, var(--accent-2), #47e0c6); }
.badge.sun{ background: linear-gradient(135deg, var(--accent-3), #ffd37a); }

.search{
  display:flex; gap:10px; margin-top: 16px;
}
.search input{
  flex:1; padding:12px 14px; border-radius:14px; border:1px solid var(--line);
  background:#fff; color:var(--text); outline:none; box-shadow: var(--shadow-sm);
}
.search button{
  padding:12px 16px; border-radius:14px; border:none;
  background: linear-gradient(135deg, var(--accent), #7eb1ff);
  color:#fff; font-weight:700; cursor:pointer; box-shadow: var(--shadow-sm);
}

.grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap:18px; margin-top: 8px; }
.card{
  background: var(--card); border:1px solid var(--line); border-radius: var(--radius-xl);
  padding:16px; box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover{ transform: translateY(-3px); box-shadow: var(--shadow-md); }
.card h3{ margin:0 0 6px; font-size:18px; }
.card .meta{ color: var(--muted); font-size: 12px; margin: 2px 0 10px; }
.card .tags{ display:flex; flex-wrap:wrap; gap:8px; margin: 6px 0 10px; }
.tag{
  font-size:11px; padding:6px 8px; border-radius: 999px; background: #f1f6ff; border:1px solid var(--line);
}
@media (prefers-color-scheme: dark){ .tag{ background:#121a3c; } }

.button{
  display:inline-block; padding:10px 14px; border-radius:12px;
  background: #fff; border: 1px solid var(--line); color: var(--text); text-decoration:none;
}
.button.primary{
  background: linear-gradient(135deg, var(--accent), #7eb1ff); color:#fff; border:none;
}
.button.small{ font-size:12px; padding:6px 8px; }

.form label{ display:block; margin:12px 0; font-weight:600; }
.form input[type=text],
.form input[type=email],
.form input[type=password],
.form textarea,
.form select,
.form input[type=file]{
  width:100%; padding:12px 14px; border-radius:14px; border:1px solid var(--line);
  background:#fff; color:var(--text);
}
.form button{
  padding:12px 16px; border-radius:14px; border:none; cursor:pointer; font-weight:700;
  background: linear-gradient(135deg, var(--accent), #7eb1ff); color:#fff;
}

.hint{ color: var(--muted); font-size:12px; }
.errors{
  background: #ffe9ed; border:1px solid #ffc3cd; padding:12px; border-radius:14px; color:#8a1b2b;
}
.flash{ padding:12px; margin:10px 0; border-radius:14px; }
.flash.info{ background:#eaf2ff; border:1px solid #cfe0ff; }
.flash.success{ background:#eafff7; border:1px solid #b7f1e3; }

.profile{ display:grid; grid-template-columns: 1fr 2fr; gap:18px; }
.list{ list-style:none; padding:0; margin:0; }
.list li{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:10px 0; border-bottom:1px dashed var(--line);
}
.muted{ color: var(--muted); font-size:12px; }

.site-footer{
  margin-top: 28px; border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
}
.site-footer p{ color: var(--muted); font-size:13px; }