@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  --bg: #0c0f1a;
  --card: #12182a;
  --panel: #0f1424;
  --accent: #4ade80;
  --accent-2: #60a5fa;
  --text: #e8edf7;
  --muted: #98a2b3;
  --border: #1f2a44;
  --shadow: 0 20px 60px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(120% 120% at 20% 20%, rgba(96,165,250,0.08), transparent 45%), radial-gradient(140% 140% at 80% 10%, rgba(74,222,128,0.08), transparent 40%), var(--bg);
  color: var(--text);
  font-family: "Manrope", "Noto Sans JP", system-ui, -apple-system, sans-serif;
}
a { color: var(--accent-2); text-decoration: none; }
h1,h2,h3 { margin: 0; }
p { margin: 0; }

.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px clamp(16px, 3vw, 32px);
  background: rgba(12,15,26,0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.topnav .brand { font-weight: 700; letter-spacing: 0.02em; }
.topnav .links { display: flex; gap: 14px; flex-wrap: wrap; }
.topnav .links a { color: var(--muted); font-size: 14px; padding: 8px 10px; border-radius: 8px; }
.topnav .links a:hover, .topnav .links a.active { color: var(--text); background: rgba(255,255,255,0.08); }

.hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  padding: 56px clamp(24px, 4vw, 56px);
}
.only-top { margin-top: 12px; }
.hero__content { display: flex; flex-direction: column; gap: 16px; }
.hero__viz {
  background: linear-gradient(145deg, rgba(96,165,250,0.12), rgba(74,222,128,0.15));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.badge {
  display: inline-block;
  background: rgba(255,255,255,0.06);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
  letter-spacing: 0.08em;
}
.viz-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.viz-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}
.viz-row span { color: var(--muted); }
.viz-row strong { font-size: 20px; color: var(--accent); }

.eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
}
.lede { color: #d7dce9; max-width: 520px; line-height: 1.6; }

.hero__actions { display: flex; gap: 12px; margin-top: 8px; }
.button {
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255,255,255,0.04);
  cursor: pointer;
  transition: 0.15s ease;
}
.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: #0b1020;
  font-weight: 700;
}
.button.ghost:hover, .button.primary:hover { transform: translateY(-1px); opacity: 0.95; }
.button:active { transform: translateY(0); }

.layout { padding: 0 clamp(20px, 4vw, 48px) 48px; display: flex; flex-direction: column; gap: 28px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.section-page { display: block; }
.hidden { display: none !important; }
.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.grid { display: grid; gap: 16px; }
.grid.stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid.two-col { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.three-col { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.stat-card, .list-card, .form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
}
.stat-card strong { font-size: 26px; display: block; margin-top: 6px; }
.stat-card p { color: var(--muted); }

.concept-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.concept-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.concept-card ul { padding-left: 16px; color: var(--muted); display: grid; gap: 6px; margin: 0; }
.concept-card.match { border-color: rgba(96,165,250,0.45); }
.concept-card.tournament { border-color: rgba(96,165,250,0.35); }
.concept-card.league { border-color: rgba(74,222,128,0.45); }
.concept-card.glossary { border-color: rgba(255,255,255,0.08); }
.pill {
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12px;
}
.pill.alt { background: rgba(255,255,255,0.06); }
.glossary-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px 18px; }

.list-card__header { display: flex; justify-content: space-between; align-items: center; color: var(--muted); margin-bottom: 8px; }
.list-card ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.list-card li { padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: rgba(255,255,255,0.03); }
.list-card strong { color: var(--text); }
.list-card small { color: var(--muted); }
.list-actions { display: flex; gap: 8px; align-items: center; }
.list-actions input[type="search"] {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--text);
  font-size: 13px;
  min-width: 160px;
}

.form-card { display: flex; flex-direction: column; gap: 10px; }
.form-card__header p { color: var(--muted); margin-top: 4px; }
.form-card label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
.form-card input, .form-card select, .form-card textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
}
.form-card input:focus, .form-card select:focus, .form-card textarea:focus {
  outline: 1px solid var(--accent-2);
}
.form-status { min-height: 18px; font-size: 13px; color: var(--muted); }

.footer {
  padding: 28px clamp(20px, 4vw, 48px) 40px;
  color: var(--muted);
  text-align: center;
}
.muted { color: var(--muted); }
.compact { list-style: disc; padding-left: 16px; color: var(--muted); display: grid; gap: 6px; }
.clickable { cursor: pointer; text-decoration: underline; text-decoration-color: rgba(255,255,255,0.4); }
.detail-panel { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 10px; color: var(--muted); }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .hero__viz { order: -1; }
  .topnav { position: sticky; }
}