:root {
  --color-bg: var(--bg);
  --color-surface: var(--panel);
  --color-surface-elevated: var(--panel-2);
  --color-purple: var(--violet);
  --color-purple-glow: rgba(242, 47, 151, 0.3);
  --color-purple-hover: var(--violet-hover);

  --color-text: var(--text);
  --color-text-muted: var(--text-muted);
  --color-text-dim: var(--text-muted);

  --color-border: var(--line);
  --color-border-focus: var(--color-purple);

  --color-success: var(--lime);
  --color-error: var(--pink);
  --color-warning: var(--gold);
  --color-gold: var(--gold);

  --card-red: #dc2626;
  --card-black: #1f2937;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;

  --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  height: 100%;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.nav {
  position: fixed;
  top: 0;
  width: 100%;
  backdrop-filter: blur(20px) saturate(180%);
  background: var(--scrim);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  padding: 12px 0;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  text-decoration: none;
  background: linear-gradient(135deg, var(--text) 0%, var(--color-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--color-text);
}

.balance-display {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-surface-elevated);
  padding: 8px 16px;
  border-radius: 24px;
  font-size: 14px;
  border: 1px solid var(--color-border);
}

.balance-amount {
  color: var(--color-purple);
  font-weight: 600;
}

.balance-refresh {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s;
  font-size: 12px;
  line-height: 1;
}

.balance-refresh:hover {
  color: var(--color-purple);
  background: rgba(242, 47, 151, 0.1);
}

.main {
  padding: 80px 32px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.page-subtitle {
  color: var(--color-text-muted);
  font-size: 16px;
  margin-bottom: 32px;
}

.panel {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 24px;
}

/* opt-in only: backdrop-filter is costly */
.panel-glass {
  backdrop-filter: blur(20px) saturate(180%);
  background: var(--scrim);
}

.panel-header {
  margin-bottom: 20px;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.panel-subtitle {
  color: var(--color-text-muted);
  font-size: 14px;
}

.input-group {
  margin-bottom: 16px;
}

.input-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.input {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s var(--transition);
}

.input:focus {
  outline: none;
  border-color: var(--color-purple);
  box-shadow: 0 0 0 4px var(--color-purple-glow);
}

.input::placeholder {
  color: var(--color-text-dim);
}

.input-error {
  border-color: var(--color-error);
}

.field-error {
  color: var(--color-error);
  font-size: 12px;
  margin-top: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--color-purple);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s var(--transition);
}

.btn:hover {
  background: var(--color-purple-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px var(--color-purple-glow);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.bet-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.bet-preset {
  padding: 8px 14px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.bet-preset:hover {
  background: rgba(242, 47, 151, 0.1);
  border-color: var(--color-purple);
  color: var(--color-purple);
}

.alert {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 16px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
}

.alert-success {
  background: rgba(182,255,61, 0.1);
  border-color: rgba(182,255,61, 0.3);
  color: var(--color-success);
}

.alert-error {
  background: rgba(255,61,139, 0.1);
  border-color: rgba(255,61,139, 0.3);
  color: var(--color-error);
}

.alert-warning {
  background: rgba(255,200,61, 0.1);
  border-color: rgba(255,200,61, 0.3);
  color: var(--color-warning);
}

.result {
  text-align: center;
  padding: 24px;
  border-radius: var(--radius);
  margin: 20px 0;
}

.result-win {
  background: rgba(182,255,61, 0.1);
  border: 1px solid rgba(182,255,61, 0.3);
}

.result-lose {
  background: rgba(255,61,139, 0.1);
  border: 1px solid rgba(255,61,139, 0.3);
}

.result-push {
  background: rgba(255,200,61, 0.1);
  border: 1px solid rgba(255,200,61, 0.3);
}

.result-amount {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
}

.result-win .result-amount { color: var(--color-success); }
.result-lose .result-amount { color: var(--color-error); }
.result-push .result-amount { color: var(--color-warning); }

.result-label {
  color: var(--color-text-muted);
  font-size: 14px;
}

.stats-row {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
}

.stat-item {
  flex: 1;
  background: var(--color-surface-elevated);
  padding: 16px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-label {
  color: var(--color-text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 84px;
  background: white;
  border-radius: 8px;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  position: relative;
}

.card-red { color: var(--card-red); }
.card-black { color: var(--card-black); }

.card-back {
  background: linear-gradient(135deg, var(--color-purple) 0%, var(--line-strong) 100%);
  color: white;
}

.game-grid {
  display: grid;
  gap: 24px;
}

.game-grid-2 { grid-template-columns: repeat(2, 1fr); }
.game-grid-3 { grid-template-columns: repeat(3, 1fr); }

.rate-limit-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.rate-limit-modal {
  background: var(--color-surface);
  padding: 32px;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--color-border);
}

.rate-limit-countdown {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-purple);
  margin: 16px 0;
}

.provably-fair-panel {
  background: var(--color-surface-elevated);
}

.fair-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fair-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

.fair-row:last-of-type {
  border-bottom: none;
  margin-bottom: 12px;
}

.fair-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.fair-value {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  background: var(--color-surface);
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  color: var(--color-purple);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}

@media (max-width: 768px) {
  .nav-container { padding: 0 16px; }
  .main { padding: 70px 16px 24px; }
  .game-grid-2, .game-grid-3 { grid-template-columns: 1fr; }
  .stats-row { flex-direction: column; gap: 12px; }
  .bet-controls { flex-wrap: wrap; }
}