/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #1a1a2e;
  --surface: #16213e;
  --surface-light: #1f2b47;
  --accent: #d4af37;
  --accent-glow: rgba(212, 175, 55, 0.3);
  --text: #e8e8e8;
  --text-muted: #9ca3af;
  --chess-black: #1a1a2e;
  --chess-white: #f0d9b5;
  --radius: 16px;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  font-size: 18px;
  line-height: 1.5;
}

/* === Chessboard Background === */
.board-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.04;
  pointer-events: none;
}

.board-pattern {
  width: 100%;
  height: 100%;
  background-image:
    repeating-conic-gradient(var(--chess-white) 0% 25%, transparent 0% 50%);
  background-size: 80px 80px;
}

/* === Container === */
.container {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

/* === Hero === */
.hero {
  text-align: center;
  padding: 40px 0 30px;
}

.chess-icon {
  font-size: 72px;
  margin-bottom: 12px;
  animation: float 3s ease-in-out infinite;
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--accent) 0%,
    #f5e6a3 25%,
    var(--accent) 50%,
    #fffbe6 75%,
    var(--accent) 100%
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s ease-in-out infinite;
  margin-bottom: 12px;
}

@keyframes shimmer {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.rating-badge {
  display: inline-block;
  background: var(--surface);
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 8px 24px;
  border-radius: 40px;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 1px;
  box-shadow: 0 0 20px var(--accent-glow);
}

/* === Info Cards === */
.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 40px 0;
}

.card {
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
  transition: transform 0.25s, box-shadow 0.25s;
}

.date-card { background: linear-gradient(135deg, #1e3a5f, #16213e); }
.time-card { background: linear-gradient(135deg, #2a1a4e, #16213e); }
.place-card { background: linear-gradient(135deg, #1a3d2e, #16213e); }

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.card-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.card-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

/* === Countdown === */
.countdown-section {
  text-align: center;
  margin: 40px 0;
}

.countdown-section h2 {
  font-size: 1.2rem;
  color: #c4b5fd;
  margin-bottom: 20px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.countdown {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.time-block {
  background: linear-gradient(160deg, #2c1654, #1a1a2e);
  border-radius: 12px;
  padding: 16px 12px;
  min-width: 80px;
  border: 1px solid rgba(180, 130, 255, 0.2);
  box-shadow: 0 2px 12px rgba(120, 80, 200, 0.15);
}

.time-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.time-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.time-separator {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.5;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* === Rules === */
.rules-section {
  background: linear-gradient(160deg, #1e3a2a, #12243a);
  border-radius: var(--radius);
  padding: 32px;
  margin: 40px 0;
  border: 1px solid rgba(100, 200, 140, 0.15);
  box-shadow: 0 4px 20px rgba(40, 100, 70, 0.1);
}

.rules-section h2 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--accent);
}

.rules-list {
  list-style: none;
}

.rules-list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 1rem;
  line-height: 1.6;
}

.rules-list li:last-child {
  border-bottom: none;
}

/* === CTA === */
.cta-section {
  text-align: center;
  margin: 40px 0;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent), #b8962e);
  color: var(--chess-black);
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
  padding: 16px 40px;
  border-radius: 50px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.cta-button:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 30px rgba(212, 175, 55, 0.5);
}

.btn-icon {
  font-size: 1.4rem;
}

.cta-hint {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* === Footer === */
.footer {
  text-align: center;
  margin-top: 50px;
  padding-top: 30px;
}

.chess-row {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.chess-row span {
  width: 32px;
  height: 32px;
  display: block;
}

.sq { background: var(--chess-black); border: 1px solid rgba(255,255,255,0.08); }
.sq1 { opacity: 1; }
.sq2 { opacity: 0.7; }
.sq3 { opacity: 0.5; }
.sq4 { opacity: 0.3; }

.footer p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* === Responsive — Tablets === */
@media (max-width: 900px) {
  .container { padding: 30px 16px 50px; }
  h1 { font-size: 2.2rem; }
  .chess-icon { font-size: 60px; }
  .time-number { font-size: 2rem; }
}

/* === Responsive — Phones === */
@media (max-width: 600px) {
  body { font-size: 17px; }

  .container { padding: 24px 14px 40px; }

  h1 { font-size: 1.9rem; }

  .chess-icon { font-size: 52px; }

  .rating-badge { font-size: 1rem; padding: 8px 18px; }

  .info-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .card { padding: 20px 16px; }
  .card-icon { font-size: 2.2rem; }
  .card-value { font-size: 1.1rem; }

  .countdown-section h2 { font-size: 1.15rem; }

  .countdown { gap: 6px; }

  .time-block {
    min-width: 72px;
    padding: 14px 10px;
    border-radius: 10px;
  }

  .time-number { font-size: 1.8rem; }
  .time-label { font-size: 0.72rem; }
  .time-separator { font-size: 1.6rem; }

  .rules-section { padding: 22px 16px; }
  .rules-section h2 { font-size: 1.2rem; }
  .rules-list li { font-size: 1rem; padding: 12px 0; }

  .cta-button {
    font-size: 1.05rem;
    padding: 15px 32px;
    width: 100%;
    justify-content: center;
  }

  .footer p { font-size: 1rem; }
  .chess-row span { width: 36px; height: 36px; }
}