* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0e1a;
  --bg-2: #0f1526;
  --surface: #141b2d;
  --surface-2: #1c2440;
  --border: #2a3352;
  --text: #e8ecf5;
  --muted: #8892b0;
  --neon-green: #00ff9d;
  --neon-blue: #00d4ff;
  --neon-orange: #ff9500;
  --neon-red: #ff4466;
  --gold: #ffd700;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

.bg-grid {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(circle at 20% 10%, rgba(0,212,255,0.08), transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0,255,157,0.08), transparent 50%),
    linear-gradient(var(--bg), var(--bg-2));
}
.bg-grid::before {
  content:''; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(42,51,82,0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,51,82,0.3) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* Navbar */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  background: rgba(15,21,38,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.logo { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; }
.logo-icon { font-size: 28px; filter: drop-shadow(0 0 8px var(--neon-green)); }
.logo-text em { color: var(--neon-green); font-style: normal; font-size: 14px; font-weight: 500; letter-spacing: 2px; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--neon-green); }
.wallet-box { display: flex; align-items: center; gap: 12px; }
.twitter-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text); text-decoration: none; transition: all 0.2s;
}
.twitter-btn:hover { border-color: var(--neon-blue); color: var(--neon-blue); transform: translateY(-2px); }
.wallet-info { display: flex; align-items: center; gap: 10px; background: var(--surface-2); padding: 8px 14px; border-radius: 10px; border: 1px solid var(--border); }
.wallet-addr { font-family: monospace; font-size: 13px; color: var(--neon-blue); }
.wallet-bal { font-weight: 700; color: var(--neon-green); font-size: 14px; }
.wallet-info.hidden, .hidden { display: none !important; }

/* Buttons */
.btn {
  padding: 11px 22px; border: none; border-radius: 10px; font-weight: 600;
  cursor: pointer; font-family: inherit; font-size: 14px;
  transition: all 0.2s; text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--neon-green), var(--neon-blue));
  color: #001018; box-shadow: 0 4px 20px rgba(0,255,157,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0,255,157,0.5); }
.btn-ghost, .btn-ghost-link { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--neon-blue); color: var(--neon-blue); }
.btn-danger { background: linear-gradient(135deg, var(--neon-red), #cc2244); color: white; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; margin-top: 10px; }

/* Hero */
.hero {
  padding: 100px 40px 80px;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}
.hero-content { max-width: 900px; }
.access-banner {
  display: inline-block;
  padding: 12px 26px;
  background: linear-gradient(90deg, rgba(255,215,0,0.12), rgba(0,255,157,0.12));
  border: 1px solid var(--gold);
  border-radius: 50px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  box-shadow: 0 0 25px rgba(255, 215, 0, 0.2);
}
.access-banner b { color: var(--neon-green); font-size: 16px; }

.token-gate {
  padding: 80px 40px;
  display: flex;
  justify-content: center;
}
.gate-card {
  max-width: 560px;
  width: 100%;
  background: linear-gradient(135deg, var(--surface), var(--surface-2));
  border: 2px solid var(--gold);
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: 0 0 60px rgba(255, 215, 0, 0.15);
}
.gate-icon { font-size: 64px; margin-bottom: 14px; filter: drop-shadow(0 0 20px var(--gold)); }
.gate-card h2 {
  font-size: 32px; margin-bottom: 10px;
  background: linear-gradient(90deg, var(--gold), var(--neon-green));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.gate-sub { color: var(--muted); margin-bottom: 28px; }
.gate-requirement {
  padding: 20px;
  background: var(--bg-2);
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 24px;
}
.gate-requirement span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.gate-requirement b {
  font-size: 36px; color: var(--neon-green); font-weight: 800;
  display: block;
}
.gate-requirement em {
  font-style: normal; color: var(--gold); font-size: 20px; font-weight: 600;
}
.gate-perks {
  list-style: none; text-align: left; margin-bottom: 28px;
  display: grid; gap: 10px;
}
.gate-perks li {
  padding: 10px 14px; background: var(--bg-2);
  border-radius: 8px; font-size: 14px;
  border-left: 3px solid var(--neon-green);
}
.tag {
  display: inline-block; padding: 8px 18px;
  background: rgba(0,255,157,0.1); border: 1px solid var(--neon-green);
  border-radius: 50px; color: var(--neon-green);
  font-size: 13px; font-weight: 600; margin-bottom: 24px;
}
h1 { font-size: 68px; line-height: 1.1; font-weight: 800; letter-spacing: -1px; }
.gradient {
  background: linear-gradient(90deg, var(--neon-green), var(--neon-blue), var(--neon-orange));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.subtitle { font-size: 18px; color: var(--muted); margin: 24px auto; max-width: 650px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-top: 32px; }
.stats { display: flex; justify-content: center; gap: 60px; margin-top: 60px; }
.stat { text-align: center; }
.stat b { display: block; font-size: 32px; color: var(--neon-green); font-weight: 800; }
.stat span { color: var(--muted); font-size: 13px; }

/* How */
.how { padding: 80px 40px; max-width: 1200px; margin: 0 auto; }
.how h2, .history-section h2, .leaderboard-section h2 {
  text-align: center; font-size: 36px; margin-bottom: 40px; font-weight: 700;
}
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--border);
  padding: 28px; border-radius: 16px; transition: all 0.3s;
}
.card:hover { border-color: var(--neon-green); transform: translateY(-4px); }
.card-icon { font-size: 36px; margin-bottom: 14px; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14px; }

/* Game */
.game-section { padding: 40px; max-width: 1500px; margin: 0 auto; }
.game-panel {
  display: grid; grid-template-columns: 280px 1fr 280px; gap: 20px;
}
.side-panel { display: flex; flex-direction: column; gap: 16px; }

.player-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px; transition: all 0.3s;
}
.player-card.active { border-color: var(--neon-green); box-shadow: 0 0 30px rgba(0,255,157,0.2); }
.player-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.stone-black, .stone-white {
  width: 36px; height: 36px; border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.stone-black { background: radial-gradient(circle at 30% 30%, #555, #000); }
.stone-white { background: radial-gradient(circle at 30% 30%, #fff, #aaa); }
.player-name { font-weight: 700; font-size: 15px; }
.player-addr { font-family: monospace; font-size: 12px; color: var(--muted); }
.player-stat {
  display: flex; justify-content: space-between; padding: 8px 0;
  border-top: 1px solid var(--border); font-size: 13px;
}
.player-stat span { color: var(--muted); }
.player-stat b { color: var(--neon-green); }
.turn-badge {
  margin-top: 10px; padding: 6px 12px; background: rgba(0,255,157,0.15);
  color: var(--neon-green); border-radius: 8px; font-size: 12px;
  text-align: center; font-weight: 600; animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

.bet-config {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px;
}
.bet-config h4 { margin-bottom: 14px; font-size: 15px; }
.bet-config label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 6px; }
.bet-config input, .bet-config select {
  width: 100%; padding: 10px 12px; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: 8px; color: var(--text);
  font-family: inherit; font-size: 14px;
}
.bet-config input:focus, .bet-config select:focus { outline: none; border-color: var(--neon-green); }

/* Board */
.board-wrap {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 20px;
}
.board-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px;
}
.status { font-weight: 600; color: var(--neon-blue); font-size: 15px; }
.timer { font-family: monospace; color: var(--neon-orange); font-size: 15px; }
.board-container {
  position: relative; display: flex; justify-content: center;
  background: linear-gradient(135deg, #d9a860, #b8873d);
  border-radius: 10px; padding: 20px;
  box-shadow: inset 0 0 60px rgba(0,0,0,0.3);
}
#goBoard { cursor: pointer; display: block; max-width: 100%; height: auto; }
.board-footer {
  display: flex; justify-content: space-between; margin-top: 14px; font-size: 14px;
}
.streak b { color: var(--neon-orange); }
.pool b { color: var(--gold); }

.result-overlay {
  position: absolute; inset: 0;
  background: rgba(10,14,26,0.92); backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px; animation: fadeIn 0.3s;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.result-card { text-align: center; padding: 40px; }
.result-icon { font-size: 80px; margin-bottom: 16px; animation: bounce 0.6s; }
@keyframes bounce { 0%,100% { transform: scale(1); } 50% { transform: scale(1.2); } }
.result-card h2 { font-size: 36px; margin-bottom: 10px; }
.result-amount { font-size: 28px; color: var(--neon-green); font-weight: 800; margin: 16px 0 24px; }

/* Tx log */
.tx-log { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.tx-log h4 { margin-bottom: 14px; font-size: 15px; }
.tx-list { max-height: 500px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.tx-item {
  padding: 10px 12px; background: var(--bg-2); border-radius: 8px;
  font-size: 12px; border-left: 3px solid var(--neon-blue);
  font-family: monospace;
}
.tx-item.win { border-color: var(--neon-green); }
.tx-item.lose { border-color: var(--neon-red); }
.tx-item.muted { color: var(--muted); border-color: var(--border); }

/* History / Leaderboard */
.history-section, .leaderboard-section { padding: 60px 40px; max-width: 1200px; margin: 0 auto; }
.history-table, .leaderboard {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
}
.history-head, .lb-head, .history-row, .lb-row {
  display: grid; padding: 14px 20px; align-items: center;
}
.history-head, .history-row { grid-template-columns: 1.2fr 1fr 1fr 1fr 1fr; }
.lb-head, .lb-row { grid-template-columns: 80px 2fr 1fr 1fr; }
.history-head, .lb-head {
  background: var(--bg-2); font-weight: 700; font-size: 13px;
  color: var(--muted); text-transform: uppercase; letter-spacing: 1px;
}
.history-row, .lb-row { border-top: 1px solid var(--border); font-size: 14px; }
.history-row .win { color: var(--neon-green); font-weight: 700; }
.history-row .lose { color: var(--neon-red); font-weight: 700; }
.empty-row { padding: 40px; text-align: center; color: var(--muted); }

/* Modal */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
  backdrop-filter: blur(8px);
}
.modal-content {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 30px; min-width: 360px;
}
.modal-content h3 { margin-bottom: 20px; font-size: 20px; }
.wallet-opt {
  display: flex; align-items: center; gap: 16px; width: 100%;
  padding: 14px 18px; background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 12px; color: var(--text); font-size: 15px; font-weight: 500;
  cursor: pointer; margin-bottom: 10px; transition: all 0.2s; font-family: inherit;
  text-align: left;
}
.wallet-opt:hover { border-color: var(--neon-green); transform: translateX(4px); background: var(--surface-2); }
.wallet-opt img {
  width: 40px; height: 40px; object-fit: contain;
  border-radius: 8px; background: rgba(255,255,255,0.04); padding: 4px;
}
.wallet-opt-info { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.wallet-opt-info b { font-size: 15px; font-weight: 700; }
.wallet-opt-info small { color: var(--muted); font-size: 12px; }

.coming-soon-tag {
  display: inline-block;
  padding: 10px 24px;
  margin: 12px 0 20px;
  background: repeating-linear-gradient(
    45deg, rgba(255,149,0,0.15), rgba(255,149,0,0.15) 10px,
    rgba(255,149,0,0.05) 10px, rgba(255,149,0,0.05) 20px
  );
  border: 2px dashed var(--neon-orange);
  border-radius: 12px;
  color: var(--neon-orange);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  animation: pulse 2s ease-in-out infinite;
}
.coming-soon-badge {
  padding: 6px 14px;
  background: rgba(255,149,0,0.15);
  border: 1px solid var(--neon-orange);
  border-radius: 50px;
  color: var(--neon-orange);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
}
.cs-inline {
  display: inline-block;
  padding: 4px 12px;
  margin-left: 10px;
  background: rgba(255,149,0,0.12);
  border: 1px solid var(--neon-orange);
  border-radius: 50px;
  color: var(--neon-orange);
  font-size: 13px;
  font-weight: 600;
  vertical-align: middle;
}

.footer {
  padding: 30px 40px; text-align: center; color: var(--muted);
  border-top: 1px solid var(--border); margin-top: 60px; font-size: 13px;
}
.disclaimer { margin-top: 8px; color: var(--neon-orange); font-size: 12px; }

@media (max-width: 1100px) {
  .game-panel { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  h1 { font-size: 42px; }
  .stats { gap: 24px; flex-wrap: wrap; }
}