/* ===== CSS VARIABLES ===== */
:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d29;
  --bg-card: #222536;
  --bg-input: #2a2d3e;
  --bg-hover: #2e3148;
  --text-primary: #ffffff;
  --text-secondary: #a0a3b1;
  --text-muted: #6b6e7b;
  --accent: #00d4aa;
  --accent-hover: #00f0c0;
  --accent-dim: rgba(0,212,170,0.15);
  --danger: #ff4757;
  --danger-dim: rgba(255,71,87,0.15);
  --warning: #ffa502;
  --warning-dim: rgba(255,165,2,0.15);
  --success: #2ed573;
  --success-dim: rgba(46,213,115,0.15);
  --blue: #3498db;
  --border: #2e3148;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --font: 'Inter', -apple-system, sans-serif;
  --font-display: 'Orbitron', monospace;
}

html.light {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f0f2f5;
  --bg-hover: #e8eaed;
  --text-primary: #1a1d29;
  --text-secondary: #5f6368;
  --text-muted: #9aa0a6;
  --border: #dadce0;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}
a { color: var(--accent); text-decoration: none; }
img { max-width: 100%; }
input, select, textarea, button { font-family: inherit; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ===== NAVBAR ===== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--bg-secondary); border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
}
.nav-inner {
  max-width: 1400px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; height: 64px;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.3rem; color: var(--text-primary); }
.logo-icon { font-size: 1.5rem; color: var(--accent); }
.logo-text { font-family: var(--font-display); }
.nav-links { display: flex; gap: 4px; }
.nav-link {
  padding: 8px 16px; border-radius: var(--radius-sm); color: var(--text-secondary);
  font-weight: 500; transition: all 0.2s; font-size: 0.9rem;
}
.nav-link:hover, .nav-link.active { color: var(--accent); background: var(--accent-dim); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-auth { display: flex; gap: 8px; }
.nav-user { display: flex; align-items: center; gap: 10px; }
.balance-display {
  font-family: var(--font-display); font-weight: 700; color: var(--accent);
  font-size: 0.95rem;
}
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text-primary); transition: 0.3s; }

/* ===== BUTTONS ===== */
.btn {
  padding: 10px 24px; border-radius: var(--radius-sm); border: none;
  font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: all 0.2s;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #000; }
.btn-accent { background: var(--accent); color: #000; font-size: 0.8rem; padding: 6px 14px; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.icon-btn {
  background: none; border: none; color: var(--text-secondary);
  font-size: 1.2rem; cursor: pointer; padding: 8px; border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.icon-btn:hover { color: var(--accent); background: var(--accent-dim); }

/* ===== FORMS ===== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; margin-bottom: 6px; font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }
.form-input {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-input);
  color: var(--text-primary); font-size: 0.95rem; transition: border 0.2s;
}
.form-input:focus { outline: none; border-color: var(--accent); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a3b1' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-title { font-size: 1.1rem; font-weight: 700; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px; width: 90%; max-width: 420px;
  position: relative; animation: modalIn 0.2s ease;
}
.modal-close {
  position: absolute; top: 12px; right: 16px; background: none; border: none;
  color: var(--text-muted); font-size: 1.5rem; cursor: pointer;
}
.modal-title { font-size: 1.4rem; font-weight: 800; margin-bottom: 24px; font-family: var(--font-display); }
@keyframes modalIn { from { transform: scale(0.95); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* ===== TOAST ===== */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 300;
  padding: 14px 24px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--accent);
  color: var(--text-primary); font-weight: 500; transform: translateY(100px);
  opacity: 0; transition: all 0.3s;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { border-color: var(--danger); }

/* ===== GRID ===== */
.container { max-width: 1400px; margin: 0 auto; padding: 84px 20px 40px; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 5fr); }

/* ===== HERO ===== */
.hero {
  text-align: center; padding: 80px 20px 60px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  border-bottom: 1px solid var(--border);
}
.hero h1 { font-family: var(--font-display); font-size: 2.8rem; font-weight: 900; margin-bottom: 16px; line-height: 1.2; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--text-secondary); font-size: 1.15rem; max-width: 600px; margin: 0 auto 32px; }
.hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 40px; }
.hero-stat-val { font-family: var(--font-display); font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.hero-stat-label { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

/* ===== GAME CARDS ===== */
.game-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; cursor: pointer;
  transition: all 0.3s; position: relative;
}
.game-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 8px 32px rgba(0,212,170,0.15); }
.game-card-bg { height: 180px; display: flex; align-items: center; justify-content: center; font-size: 4rem; }
.game-card-body { padding: 20px; }
.game-card-tag {
  display: inline-block; padding: 4px 10px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
}
.tag-crash { background: var(--accent-dim); color: var(--accent); }
.tag-mines { background: var(--warning-dim); color: var(--warning); }
.tag-sports { background: rgba(52,152,219,0.15); color: var(--blue); }
.tag-hot { background: var(--danger-dim); color: var(--danger); }
.tag-new { background: var(--success-dim); color: var(--success); }

/* ===== CRASH GAME ===== */
.crash-container { display: grid; grid-template-columns: 1fr 340px; gap: 20px; }
.crash-chart { position: relative; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; min-height: 400px; }
.crash-mult {
  font-family: var(--font-display); font-size: 4rem; font-weight: 900;
  text-align: center; margin: 20px 0;
}
.crash-mult.waiting { color: var(--text-muted); }
.crash-mult.running { color: var(--accent); animation: pulse 0.5s infinite; }
.crash-mult.crashed { color: var(--danger); }
.crash-hash { text-align: center; color: var(--text-muted); font-size: 0.85rem; font-family: monospace; }
.crash-canvas { width: 100%; height: 250px; margin-top: 16px; }
.crash-sidebar { display: flex; flex-direction: column; gap: 16px; }
.crash-bet-form { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.crash-history { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.history-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.history-chip {
  padding: 4px 10px; border-radius: 20px; font-size: 0.8rem;
  font-weight: 600; font-family: var(--font-display);
}
.history-chip.low { background: var(--danger-dim); color: var(--danger); }
.history-chip.mid { background: var(--warning-dim); color: var(--warning); }
.history-chip.high { background: var(--success-dim); color: var(--success); }

/* ===== MINES GAME ===== */
.mines-container { max-width: 700px; margin: 0 auto; }
.mines-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 24px 0; }
.mine-cell {
  aspect-ratio: 1; border-radius: var(--radius-sm); border: 2px solid var(--border);
  background: var(--bg-card); cursor: pointer; display: flex;
  align-items: center; justify-content: center; font-size: 1.5rem;
  transition: all 0.2s; position: relative; overflow: hidden;
}
.mine-cell:hover:not(.revealed) { border-color: var(--accent); transform: scale(1.05); }
.mine-cell.revealed.safe { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.mine-cell.revealed.mine { background: var(--danger-dim); border-color: var(--danger); color: var(--danger); }
.mine-cell.revealed .mine-icon { font-size: 1.8rem; }
.mine-cell::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), transparent);
}
.mines-controls { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.mine-stat {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px; text-align: center; flex: 1;
}
.mine-stat-val { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.mine-stat-label { color: var(--text-muted); font-size: 0.8rem; margin-top: 4px; }

/* ===== SPORTS ===== */
.sports-filters { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 16px; border-radius: 20px; border: 1px solid var(--border);
  background: var(--bg-card); color: var(--text-secondary); cursor: pointer;
  font-size: 0.85rem; font-weight: 500; transition: all 0.2s;
}
.filter-btn.active, .filter-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.event-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; margin-bottom: 12px;
  transition: border 0.2s;
}
.event-card:hover { border-color: var(--accent); }
.event-teams { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.event-team { text-align: center; flex: 1; }
.event-team-name { font-weight: 600; font-size: 0.9rem; margin-top: 6px; }
.event-vs { color: var(--text-muted); font-size: 0.85rem; }
.event-odds { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.odds-btn {
  padding: 10px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--bg-input); cursor: pointer; text-align: center;
  transition: all 0.2s; color: var(--text-primary);
}
.odds-btn:hover { border-color: var(--accent); }
.odds-btn.selected { background: var(--accent); color: #000; border-color: var(--accent); }
.odds-val { font-family: var(--font-display); font-weight: 700; font-size: 1rem; }
.odds-label { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.event-time { color: var(--accent); font-size: 0.8rem; font-weight: 600; }
.event-league { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; }
.live-badge {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  background: var(--danger); color: #fff; font-size: 0.7rem;
  font-weight: 700; animation: pulse 1s infinite; margin-left: 8px;
}

/* ===== WALLET ===== */
.wallet-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.wallet-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; text-align: center;
}
.wallet-icon { font-size: 2rem; margin-bottom: 8px; }
.wallet-name { font-weight: 700; margin-bottom: 4px; }
.wallet-bal { font-family: var(--font-display); color: var(--accent); font-weight: 700; }

/* ===== ADMIN ===== */
.admin-layout { display: grid; grid-template-columns: 240px 1fr; min-height: calc(100vh - 64px); }
.admin-sidebar {
  background: var(--bg-secondary); border-right: 1px solid var(--border);
  padding: 24px 12px;
}
.admin-nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-radius: var(--radius-sm); color: var(--text-secondary);
  cursor: pointer; transition: all 0.2s; font-size: 0.9rem; margin-bottom: 4px;
}
.admin-nav-item:hover, .admin-nav-item.active { color: var(--accent); background: var(--accent-dim); }
.admin-content { padding: 24px; overflow-y: auto; }
.admin-stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.admin-stat {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.admin-stat-val { font-family: var(--font-display); font-size: 1.6rem; font-weight: 800; color: var(--accent); }
.admin-stat-label { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

/* ===== TABLE ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; }
tr:hover td { background: var(--bg-hover); }

/* ===== BADGE ===== */
.badge { display: inline-block; padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.badge-pending { background: var(--warning-dim); color: var(--warning); }
.badge-approved { background: var(--success-dim); color: var(--success); }
.badge-rejected { background: var(--danger-dim); color: var(--danger); }
.badge-won { background: var(--success-dim); color: var(--success); }
.badge-lost { background: var(--danger-dim); color: var(--danger); }
.badge-active { background: var(--accent-dim); color: var(--accent); }

/* ===== TABS ===== */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 1px solid var(--border); padding-bottom: 0; }
.tab {
  padding: 10px 20px; border-bottom: 2px solid transparent;
  color: var(--text-secondary); cursor: pointer; font-weight: 500;
  transition: all 0.2s; background: none; border-top: none; border-left: none; border-right: none;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-secondary); border-top: 1px solid var(--border);
  padding: 40px 20px; margin-top: 60px; text-align: center;
  color: var(--text-muted); font-size: 0.85rem;
}

/* ===== LOADING ===== */
.loading { display: flex; align-items: center; justify-content: center; padding: 40px; }
.spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .crash-container { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { display: none; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 1.8rem; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .crash-mult { font-size: 2.5rem; }
  .event-odds { grid-template-columns: repeat(3, 1fr); }
  .modal { width: 95%; padding: 24px; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .container { padding: 74px 12px 20px; }
}

.mobile-nav {
  display: none; position: fixed; top: 64px; left: 0; right: 0;
  background: var(--bg-secondary); border-bottom: 1px solid var(--border);
  z-index: 99; padding: 12px 20px;
}
.mobile-nav.open { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
  padding: 12px 16px; border-radius: var(--radius-sm); color: var(--text-secondary);
  font-weight: 500; transition: 0.2s;
}
.mobile-nav a:hover { background: var(--accent-dim); color: var(--accent); }