:root {
  --bg-primary: #0a0a14;
  --bg-secondary: #12121f;
  --bg-tertiary: #1a1a2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #6b7280;
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-success: #22c55e;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;
  --border-color: #2d2d44;
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }

.hidden { display: none !important; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  gap: 0.5rem;
  white-space: nowrap;
}

.btn-primary { background: var(--gradient-primary); color: white; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); }
.btn-outline:hover { background: var(--bg-tertiary); }
.btn-success { background: var(--accent-success); color: white; }
.btn-success:hover { background: #1ea54d; }
.btn-danger { background: var(--accent-danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.nav-brand .logo { font-size: 1.75rem; }

.brand-name {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links { display: flex; gap: 1rem; }
.nav-user { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }

.balance-display {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  background: var(--bg-tertiary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

.balance-label { font-size: 0.75rem; color: var(--text-muted); }
.balance-amount { font-weight: 700; color: var(--accent-success); font-size: 1rem; }

.user-menu { position: relative; }
.user-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s;
}
.user-btn:hover { background: var(--bg-secondary); border-color: var(--accent-primary); }
.user-btn svg { flex-shrink: 0; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 150px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0;
  z-index: 200;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}
.dropdown-menu a {
  display: block;
  padding: 0.625rem 1rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: background 0.2s;
}
.dropdown-menu a:hover { background: var(--bg-tertiary); }

.main-content { max-width: 1200px; margin: 0 auto; padding: 2rem 1rem; }

.hero { text-align: center; padding: 3rem 1rem; }
.hero h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; }
.hero .highlight { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.125rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 2rem; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2rem; }
.hero-stats { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }

.stat-card { background: var(--bg-secondary); padding: 1.25rem 1.5rem; border-radius: 12px; border: 1px solid var(--border-color); text-align: center; }
.stat-value { display: block; font-size: 1.5rem; font-weight: 700; background: var(--gradient-gold); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.875rem; color: var(--text-muted); }

.section-title { font-size: 1.75rem; font-weight: 700; margin-bottom: 1.5rem; text-align: center; }
.games-section { padding: 3rem 0; }
.games-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; }

.game-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
}

.game-card:hover { transform: translateY(-4px); border-color: var(--accent-primary); box-shadow: 0 10px 40px rgba(99, 102, 241, 0.2); }
.game-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.game-icon-img { width: 80px; height: 80px; margin-bottom: 0.75rem; border-radius: 12px; object-fit: contain; }
.game-card h3 { font-size: 1.125rem; margin-bottom: 0.25rem; }
.game-card p { font-size: 0.8rem; color: var(--text-muted); }

.crypto-section { padding: 3rem 0; }
.crypto-cards { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }
.crypto-card { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem 2rem; text-align: center; min-width: 180px; }
.crypto-card.btc { border-color: #f7931a; }
.crypto-card.ltc { border-color: #345d9d; }
.crypto-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.crypto-card.btc .crypto-icon { color: #f7931a; }
.crypto-card.ltc .crypto-icon { color: #345d9d; }
.crypto-card h3 { font-size: 1.125rem; margin-bottom: 0.25rem; }
.crypto-card p { font-size: 0.8rem; color: var(--text-muted); }

.footer { background: var(--bg-secondary); border-top: 1px solid var(--border-color); padding: 1.5rem; text-align: center; margin-top: 3rem; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-bottom: 0.5rem; font-weight: 600; }
.footer-disclaimer { font-size: 0.8rem; color: var(--text-muted); }

.page-container { max-width: 1200px; margin: 0 auto; padding: 2rem 1rem; }

.card { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; }
.card-header { margin-bottom: 1.25rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.card-title { font-size: 1.25rem; font-weight: 700; }

.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: var(--text-secondary); font-size: 0.875rem; }
.form-input { width: 100%; padding: 0.75rem 1rem; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-primary); font-size: 1rem; transition: border-color 0.2s; }
.form-input:focus { outline: none; border-color: var(--accent-primary); }
.form-input::placeholder { color: var(--text-muted); }

.auth-page { min-height: calc(100vh - 80px); display: flex; align-items: center; justify-content: center; padding: 1rem; }
.auth-card { width: 100%; max-width: 400px; }
.auth-title { text-align: center; margin-bottom: 1.5rem; }
.auth-title h1 { font-size: 1.75rem; margin-bottom: 0.5rem; }
.auth-title p { color: var(--text-muted); }
.auth-footer { text-align: center; margin-top: 1.25rem; color: var(--text-muted); font-size: 0.875rem; }
.auth-footer a { color: var(--accent-primary); }

.alert { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.875rem; }
.alert-error { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--accent-danger); color: var(--accent-danger); }
.alert-success { background: rgba(34, 197, 94, 0.1); border: 1px solid var(--accent-success); color: var(--accent-success); }
.alert-warning { background: rgba(245, 158, 11, 0.1); border: 1px solid var(--accent-warning); color: var(--accent-warning); }

.game-layout { display: grid; grid-template-columns: 1fr 320px; gap: 1.5rem; padding: 1.5rem 1rem; max-width: 1200px; margin: 0 auto; }
.game-area { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; min-height: 350px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.game-controls { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.25rem; }
.game-result { font-size: 3rem; font-weight: 700; text-align: center; }
.game-result.win { color: var(--accent-success); }
.game-result.lose { color: var(--accent-danger); }

.bet-input-group { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.bet-input-group .form-input { flex: 1; }
.bet-buttons { display: flex; gap: 0.5rem; }
.bet-buttons .btn { flex: 1; padding: 0.5rem; font-size: 0.75rem; }

.slider-container { margin: 1.25rem 0; }
.slider { width: 100%; height: 6px; border-radius: 3px; background: var(--bg-tertiary); -webkit-appearance: none; appearance: none; }
.slider::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--accent-primary); cursor: pointer; }
.slider::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--accent-primary); cursor: pointer; border: none; }

.multiplier-display { text-align: center; margin: 1rem 0; }
.multiplier-value { font-size: 1.75rem; font-weight: 700; color: var(--accent-primary); }

.wallet-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.wallet-section { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.5rem; }
.wallet-section h2 { margin-bottom: 1.25rem; font-size: 1.125rem; }
.address-display { background: var(--bg-tertiary); padding: 0.75rem; border-radius: 8px; word-break: break-all; font-family: monospace; font-size: 0.8rem; margin: 1rem 0; }
.copy-btn { width: 100%; margin-top: 0.5rem; }

.currency-tabs { display: flex; gap: 0.5rem; margin-bottom: 1.25rem; }
.currency-tab { flex: 1; padding: 0.625rem; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-primary); cursor: pointer; font-weight: 600; transition: all 0.2s; font-size: 0.875rem; }
.currency-tab.active { background: var(--accent-primary); border-color: var(--accent-primary); }

.deposit-status { padding: 1.25rem; background: var(--bg-tertiary); border-radius: 8px; text-align: center; }
.deposit-status .status-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.deposit-status .status-message { font-size: 1rem; font-weight: 600; }
.deposit-status.pending .status-icon { color: var(--accent-warning); }
.deposit-status.confirmed .status-icon { color: var(--accent-success); }

.table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
.table th, .table td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--border-color); }
.table th { font-weight: 600; color: var(--text-muted); font-size: 0.7rem; text-transform: uppercase; }
.table tr:hover { background: var(--bg-tertiary); }

.status-badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 20px; font-size: 0.7rem; font-weight: 600; }
.status-pending { background: rgba(245, 158, 11, 0.2); color: var(--accent-warning); }
.status-confirmed, .status-approved, .status-completed { background: rgba(34, 197, 94, 0.2); color: var(--accent-success); }
.status-rejected { background: rgba(239, 68, 68, 0.2); color: var(--accent-danger); }

.admin-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.admin-stat { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 10px; padding: 1.25rem; text-align: center; }
.admin-stat .value { font-size: 1.5rem; font-weight: 700; color: var(--accent-primary); }
.admin-stat .label { color: var(--text-muted); font-size: 0.8rem; }

.tabs { display: flex; gap: 0.25rem; margin-bottom: 1.25rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tab { padding: 0.625rem 1rem; background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-weight: 600; transition: color 0.2s; white-space: nowrap; font-size: 0.875rem; }
.tab.active { color: var(--accent-primary); }
.tab:hover { color: var(--text-primary); }

@media (max-width: 900px) {
  .game-layout { grid-template-columns: 1fr; }
  .game-controls { order: -1; }
  .game-area { min-height: 280px; }
}

@media (max-width: 768px) {
  .navbar { padding: 0.75rem 1rem; }
  .nav-links { display: none; }
  .hero h1 { font-size: 1.75rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { flex-direction: column; gap: 0.75rem; align-items: center; }
  .games-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .wallet-grid { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .crypto-cards { flex-direction: column; align-items: center; }
  .page-container { padding: 1.25rem 0.75rem; }
  .card { padding: 1rem; }
  .auth-card { padding: 1.25rem; }
  .table { display: block; overflow-x: auto; }
  .btn { padding: 0.5rem 0.75rem; font-size: 0.8rem; }
  .btn-lg { padding: 0.625rem 1rem; font-size: 0.875rem; }
}

@media (max-width: 480px) {
  .navbar { padding: 0.5rem 0.75rem; }
  .nav-brand { font-size: 1.25rem; }
  .nav-brand .logo { font-size: 1.5rem; }
  .balance-display { padding: 0.375rem 0.75rem; }
  .balance-amount { font-size: 0.875rem; }
  .hero { padding: 2rem 0.75rem; }
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 0.9rem; }
  .games-grid { grid-template-columns: 1fr; }
  .game-card { padding: 1.25rem; }
  .game-icon { font-size: 2rem; }
  .game-icon-img { width: 64px; height: 64px; }
  .game-card h3 { font-size: 1rem; }
  .admin-stat .value { font-size: 1.25rem; }
  .admin-stat .label { font-size: 0.7rem; }
  .admin-stat { padding: 1rem; }
  .game-controls { padding: 1rem; }
  .game-area { padding: 1rem; min-height: 220px; }
  .form-input { padding: 0.625rem 0.75rem; font-size: 0.9rem; }
  .tab { padding: 0.5rem 0.75rem; font-size: 0.8rem; }
  .section-title { font-size: 1.25rem; }
  .stat-card { padding: 1rem; }
  .stat-value { font-size: 1.25rem; }
}