/* ─── CSS Variables ─────────────────────────────────────────────── */
:root {
  --bg: #0a1628;
  --card: #132033;
  --card-hover: #1a2d47;
  --border: #1e3a5f;
  --accent: #f5831f;
  --accent-dim: #c4661a;
  --text: #ffffff;
  --text-muted: #8ba4c0;
  --text-dim: #4d6a8a;
  --success: #22c55e;
  --danger: #ef4444;
  --gold: #ffd700;
  --silver: #c0c0c0;
  --bronze: #cd7f32;
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Layout ────────────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.page-header {
  background: linear-gradient(135deg, #0d1e38 0%, #132033 50%, #0a1628 100%);
  border-bottom: 2px solid var(--accent);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.page-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo .ball { font-size: 1.6rem; }
.logo span { color: var(--accent); }

nav { display: flex; gap: 0.5rem; flex-wrap: wrap; }
nav a {
  color: var(--text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  text-decoration: none;
}
nav a:hover, nav a.active {
  background: var(--card-hover);
  color: var(--text);
}

main { padding: 2rem 0 4rem; }

/* ─── Cards ─────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.card-sm { padding: 1rem; border-radius: var(--radius); }

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dim); color: #fff; text-decoration: none; }
.btn-primary:disabled { background: #555; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--card-hover); color: var(--text); text-decoration: none; }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; text-decoration: none; }

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover { background: #16a34a; color: #fff; text-decoration: none; }

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }

/* ─── Forms ─────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

input[type="text"],
input[type="password"],
input[type="number"],
textarea,
select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.6rem 0.9rem;
  font-size: 0.95rem;
  font-family: var(--font);
  width: 100%;
  transition: border-color var(--transition);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ─── Toggle Switch ─────────────────────────────────────────────── */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}
.toggle-row:last-child { border-bottom: none; }
.toggle-label { font-weight: 600; }
.toggle-desc { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.1rem; }

.toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: #2a3f5a;
  border-radius: 26px;
  transition: 0.3s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.3s;
}
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(22px); }

/* ─── Tables ────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  padding: 0.7rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ─── Badges ────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}
.badge-seed {
  background: rgba(245,131,31,0.15);
  color: var(--accent);
  border: 1px solid rgba(245,131,31,0.3);
}
.badge-region {
  background: rgba(139,164,192,0.1);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.badge-alive { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-elim { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-open { background: rgba(34,197,94,0.15); color: var(--success); border: 1px solid rgba(34,197,94,0.3); }
.badge-closed { background: rgba(239,68,68,0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }

/* ─── Leaderboard Rank Medals ───────────────────────────────────── */
.rank-1 { color: var(--gold); }
.rank-2 { color: var(--silver); }
.rank-3 { color: var(--bronze); }
.rank-num { font-weight: 800; font-size: 1rem; }

/* ─── Live Status Indicator ─────────────────────────────────────── */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}
.live-dot.disconnected { background: var(--text-dim); animation: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ─── Hero Section ──────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 4rem 1rem 3rem;
}
.hero-ball { font-size: 4rem; display: block; margin-bottom: 1rem; animation: bounce 2s ease-in-out infinite; }
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; letter-spacing: -0.03em; margin-bottom: 0.5rem; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--text-muted); font-size: 1.1rem; max-width: 500px; margin: 0 auto 1.5rem; }

/* ─── Stats Bar ─────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 2rem 0;
}
.stat-item {
  flex: 1;
  background: var(--card);
  padding: 1.25rem 1rem;
  text-align: center;
}
.stat-value { font-size: 2rem; font-weight: 900; color: var(--accent); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.2rem; }

/* ─── Scoring Example ───────────────────────────────────────────── */
.score-example {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}
.round-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
}
.round-card .round-name { font-size: 0.7rem; color: var(--text-muted); margin-bottom: 0.3rem; }
.round-card .round-pts { font-size: 1.3rem; font-weight: 800; color: var(--accent); }
.round-card .round-formula { font-size: 0.7rem; color: var(--text-dim); }

/* ─── Countdown ─────────────────────────────────────────────────── */
.countdown {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin: 1.5rem 0;
}
.countdown-unit { text-align: center; }
.countdown-num {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  min-width: 70px;
  display: block;
}
.countdown-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; margin-top: 0.3rem; letter-spacing: 0.05em; }

/* ─── Team Picker ───────────────────────────────────────────────── */
.pick-counter {
  position: sticky;
  top: 70px;
  z-index: 50;
  background: var(--bg);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.pick-counter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.pick-count-display {
  font-size: 1.1rem;
  font-weight: 700;
}
.pick-count-display .count { color: var(--accent); font-size: 1.4rem; }

.pick-bar {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  max-width: 200px;
}
.pick-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.region-section { margin-bottom: 2.5rem; }
.region-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.teams-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.6rem;
}

.team-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  user-select: none;
}
.team-card:hover { border-color: var(--accent); background: var(--card-hover); }
.team-card.selected { border-color: var(--accent); background: rgba(245,131,31,0.1); }
.team-card.locked { cursor: not-allowed; opacity: 0.6; }
.team-card .seed-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-muted);
  flex-shrink: 0;
}
.team-card.selected .seed-badge { background: var(--accent); border-color: var(--accent); color: #fff; }
.team-card .team-name { font-weight: 600; font-size: 0.9rem; flex: 1; }
.team-card .check-icon { color: var(--accent); font-size: 1.1rem; opacity: 0; transition: opacity var(--transition); }
.team-card.selected .check-icon { opacity: 1; }

/* Score preview in picks */
.score-preview {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}
.score-preview strong { color: var(--accent); }

/* ─── Leaderboard Table ─────────────────────────────────────────── */
.lb-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  overflow: hidden;
  transition: all var(--transition);
}
.lb-row.top-1 { border-color: var(--gold); }
.lb-row.top-2 { border-color: var(--silver); }
.lb-row.top-3 { border-color: var(--bronze); }

.lb-row-header {
  display: grid;
  grid-template-columns: 50px 1fr auto auto auto auto auto;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
}
.lb-rank { font-size: 1.2rem; font-weight: 900; text-align: center; }
.lb-name { font-weight: 700; font-size: 1rem; }
.lb-score { font-size: 1.3rem; font-weight: 900; color: var(--accent); }
.lb-alive { font-size: 0.8rem; color: var(--text-muted); }
.lb-chevron-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background var(--transition), color var(--transition);
  user-select: none;
}
.lb-chevron-btn:hover { background: var(--surface); color: var(--text); }
.lb-chevron { transition: transform var(--transition); font-size: 0.75rem; }
.lb-row.teams-expanded .lb-chevron-teams .lb-chevron { transform: rotate(180deg); }
.lb-row.path-expanded .lb-chevron-path .lb-chevron { transform: rotate(180deg); }

.lb-teams {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.5rem;
  padding: 0 1.25rem 1.25rem;
}
.lb-row.teams-expanded .lb-teams { display: grid; }

.lb-path { display: none; }
.lb-row.path-expanded .lb-path { display: block; }

.lb-team-pill {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}
.lb-team-pill.alive { border-color: rgba(34,197,94,0.3); }
.lb-team-pill.eliminated { border-color: rgba(239,68,68,0.2); opacity: 0.6; text-decoration: line-through; }
.lb-team-pts { font-weight: 700; color: var(--accent); }

/* ─── Bracket Grid ──────────────────────────────────────────────── */
.bracket-grid {
  overflow-x: auto;
}
.bracket-table { border-collapse: separate; border-spacing: 0; }
.bracket-table th {
  background: var(--card);
  padding: 0.7rem 1rem;
  min-width: 120px;
  font-size: 0.8rem;
  border: 1px solid var(--border);
}
.bracket-table td {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  font-size: 0.8rem;
  min-width: 50px;
  text-align: center;
  white-space: nowrap;
}
.bracket-cell-picked.alive { background: rgba(34,197,94,0.15); color: var(--success); }
.bracket-cell-picked.eliminated { background: rgba(239,68,68,0.12); color: var(--danger); }
.bracket-cell-not-picked { color: var(--text-dim); }
.bracket-team-header { font-size: 0.75rem; padding: 0.3rem 0.6rem; }

/* ─── Admin Tabs ────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}
.tab-btn {
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font);
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Admin Key Banner ──────────────────────────────────────────── */
.admin-lock {
  text-align: center;
  padding: 3rem 1rem;
}
.admin-lock h2 { margin-bottom: 1rem; }
.admin-key-form { display: flex; gap: 0.5rem; max-width: 400px; margin: 0 auto; }
.admin-key-form input { flex: 1; }

/* ─── Invite Link ───────────────────────────────────────────────── */
.invite-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  max-width: 300px;
}
.invite-link code {
  flex: 1;
  font-size: 0.75rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ─── Toast Notifications ───────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}
.toast {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: slide-in 0.3s ease;
  pointer-events: auto;
  max-width: 320px;
}
.toast.success { border-color: var(--success); color: var(--success); }
.toast.error { border-color: var(--danger); color: var(--danger); }
@keyframes slide-in {
  from { transform: translateX(110%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ─── Loading Spinner ───────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

/* ─── Misc Helpers ──────────────────────────────────────────────── */
.section-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.85rem; }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.font-bold { font-weight: 700; }
.hidden { display: none !important; }

/* ─── Hamburger / Mobile Nav ────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0.45rem;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition);
  flex-shrink: 0;
}
.hamburger:hover { background: var(--card-hover); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 2px solid var(--accent);
  padding: 0.5rem 1.25rem 0.75rem;
  z-index: 99;
  flex-direction: column;
  gap: 0.1rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text-muted);
  padding: 0.65rem 0.75rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  display: block;
  transition: all var(--transition);
}
.mobile-nav a:hover,
.mobile-nav a.active {
  background: var(--card-hover);
  color: var(--text);
  text-decoration: none;
}

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Show hamburger, hide desktop nav */
  .hamburger { display: flex; }
  nav { display: none; }

  /* Leaderboard row — simpler 4-col grid */
  .lb-row-header {
    grid-template-columns: 40px 1fr auto auto;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }
  .lb-alive { display: none; }
  .lb-potential { display: none; }

  /* Stats bar */
  .stats-bar { flex-direction: column; gap: 0; }
  .stat-value { font-size: 1.6rem; }

  /* Countdown */
  .countdown { gap: 0.5rem; }
  .countdown-num { font-size: 1.8rem; min-width: 55px; padding: 0.4rem 0.75rem; }

  /* Cards */
  .card { padding: 1.1rem; }

  /* Path-to-win grid */
  .path-grid { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }

  /* Admin */
  .admin-key-form { flex-direction: column; }
}