/* ==================== BASE ==================== */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2332;
  --bg-card-hover: #1f2b3d;
  --border-color: #2a3a4e;
  --accent: #00e5ff;
  --accent-dim: #00a5b8;
  --accent-glow: rgba(0, 229, 255, 0.15);
  --accent2: #7c3aed;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --radius: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ==================== SCREENS ==================== */
.screen { display: none; }
.screen.active { display: block; }

/* ==================== AUTH ==================== */
.auth-container {
  max-width: 400px;
  margin: 0 auto;
  padding: 60px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.logo {
  text-align: center;
  margin-bottom: 40px;
}

.logo-icon {
  font-size: 48px;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 20px var(--accent));
}

.logo h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 4px;
  margin-top: 4px;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}

.tab-btn {
  flex: 1;
  padding: 10px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--accent-glow);
  color: var(--accent);
}

.auth-form { display: none; }
.auth-form.active { display: block; }

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

.input-group label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.input-group input,
.input-group textarea,
.input-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  text-align: center;
  min-height: 20px;
}

/* ==================== BUTTONS ==================== */
.btn {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-dim);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  color: #000;
  border: none;
  font-weight: 600;
}

.btn-primary:hover {
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none;
}

.btn-success {
  background: var(--success);
  color: #fff;
  border: none;
}

.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-full { width: 100%; padding: 12px; font-size: 15px; }

/* ==================== NAVBAR ==================== */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.points-badge {
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 4px 12px;
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  border-radius: 20px;
  color: var(--accent);
  font-weight: 600;
}

.user-name {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== TAB NAV ==================== */
.tab-nav {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.nav-tab, .admin-tab {
  flex: 1;
  min-width: max-content;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-tab.active, .admin-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ==================== CONTENT ==================== */
.content {
  padding: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.page { display: none; }
.page.active { display: block; }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-header h2 {
  font-size: 20px;
  font-weight: 600;
}

.sub-header {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 24px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

/* ==================== FILTER ==================== */
.filter-btns {
  display: flex;
  gap: 4px;
}

.filter-btn {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.filter-btn.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

/* ==================== CARDS ==================== */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: all 0.2s;
}

.card:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
}

.match-card {
  position: relative;
}

.match-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.match-tournament {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.match-status {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.status-upcoming {
  background: rgba(0, 229, 255, 0.1);
  color: var(--accent);
}

.status-betting {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.status-finished {
  background: rgba(100, 116, 139, 0.1);
  color: var(--text-muted);
}

.match-teams {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin: 16px 0;
}

.team-name {
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  flex: 1;
}

.vs-text {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-muted);
  padding: 4px 8px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.match-time {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.match-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  justify-content: center;
}

.match-actions .btn {
  min-width: 100px;
  text-align: center;
}

.winner-badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border-radius: 10px;
  margin-top: 4px;
}

/* ==================== TOURNAMENT ==================== */
.multiplier-info {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.badge {
  font-size: 11px;
  padding: 4px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--accent);
  font-family: var(--font-mono);
}

.tournament-card {
  padding: 20px;
}

.tournament-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.tournament-status {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.teams-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  margin-bottom: 16px;
}

.team-chip {
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  text-align: center;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.team-chip:hover {
  border-color: var(--accent);
}

.team-chip.selected {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}

.prediction-types {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.pred-type-btn {
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.pred-type-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pred-type-btn.selected {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

/* ==================== LEADERBOARD ==================== */
.leaderboard {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.lb-row {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.2s;
}

.lb-row:last-child { border-bottom: none; }
.lb-row:hover { background: var(--bg-card-hover); }

.lb-rank {
  width: 40px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
}

.lb-rank.top1 { color: #ffd700; }
.lb-rank.top2 { color: #c0c0c0; }
.lb-rank.top3 { color: #cd7f32; }

.lb-name {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
}

.lb-points {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
}

/* ==================== BET HISTORY ==================== */
.bet-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.bet-info {
  flex: 1;
}

.bet-match {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.bet-detail {
  font-size: 12px;
  color: var(--text-secondary);
}

.bet-amount {
  text-align: right;
}

.bet-amount .amount {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
}

.bet-amount .payout {
  font-size: 12px;
  color: var(--success);
}

.bet-status-won { color: var(--success); }
.bet-status-lost { color: var(--danger); }
.bet-status-pending { color: var(--warning); }

/* ==================== MODAL ==================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 440px;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 16px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.modal-body {
  padding: 20px;
}

/* ==================== ADMIN ==================== */
.admin-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.admin-form h3 {
  margin-bottom: 16px;
  font-size: 16px;
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.form-row .input-group { flex: 1; }

.vs-label {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-muted);
  padding-bottom: 16px;
}

.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.hidden { display: none !important; }

.admin-table-wrap {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.admin-table th,
.admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.admin-table th {
  background: var(--bg-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.admin-table td {
  font-size: 13px;
}

.admin-table input[type="number"] {
  width: 100px;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ==================== TOAST ==================== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 12px 24px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 14px;
  z-index: 2000;
  transition: transform 0.3s ease;
  box-shadow: 0 0 20px var(--accent-glow);
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.15);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 600px) {
  .content { padding: 12px; }
  .team-name { font-size: 15px; }
  .form-row { flex-direction: column; }
  .vs-label { padding: 0; text-align: center; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .nav-right { gap: 8px; }
  .user-name { display: none; }
  .tab-nav { gap: 0; }
  .nav-tab, .admin-tab { padding: 10px 12px; font-size: 12px; }
  .teams-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
}

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

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.card { animation: fadeIn 0.3s ease; }

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--accent-glow); }
  50% { box-shadow: 0 0 20px var(--accent-glow); }
}

.points-badge { animation: glow 3s infinite; }