:root {
  --bg: #0d0d0d;
  --surface: #1a1a1a;
  --border: #2a2a2a;
  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --danger: #ff4444;
  --warn: #ffaa00;
  --text: #e8e8e8;
  --text-muted: #888;
  --radius: 8px;
  --font: 'Courier New', Courier, monospace;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
}

#app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* Nav */
nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
nav .logo { color: var(--accent); font-size: 1.2rem; font-weight: bold; text-decoration: none; }
nav a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; }
nav a:hover, nav a.active { color: var(--accent); }
nav .spacer { flex: 1; }

/* Page */
.page { flex: 1; padding: 1.5rem 1rem; max-width: 600px; margin: 0 auto; width: 100%; }
h1 { color: var(--accent); font-size: 1.4rem; margin-bottom: 1rem; }
h2 { font-size: 1.1rem; margin-bottom: 0.75rem; }
h3 { font-size: 0.95rem; margin: 1rem 0 0.4rem; }
h4 { font-size: 0.875rem; color: var(--text-muted); margin: 0.75rem 0 0.3rem; font-weight: bold; }
.card p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 0.6rem; }
.card p:last-child { margin-bottom: 0; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

/* Forms */
label { display: block; margin-bottom: 0.25rem; font-size: 0.85rem; color: var(--text-muted); }
input, select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 0.6rem 0.75rem;
  font-family: var(--font);
  font-size: 1rem;
  margin-bottom: 1rem;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 1rem;
  text-decoration: none;
  transition: opacity 0.15s;
}
.btn:hover { opacity: 0.85; }
.btn-primary  { background: var(--accent); color: #000; font-weight: bold; }
.btn-outline  { background: transparent; border: 1px solid var(--accent); color: var(--accent); }
.btn-danger   { background: var(--danger); color: #fff; }
.btn-block    { display: block; width: 100%; text-align: center; }
.btn + .btn   { margin-top: 0.5rem; }

/* OAuth buttons */
.btn-github   { background: #24292e; color: #fff; border: 1px solid #444; }
.btn-pocketid { background: #4a3f8f; color: #fff; }

/* Stat cards */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin: 1rem 0; }
.stat-box { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.75rem; text-align: center; }
.stat-box .value { font-size: 1.8rem; color: var(--accent); font-weight: bold; }
.stat-box .label { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Fight tabs */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 1rem; }
.tab { flex: 1; padding: 0.65rem; text-align: center; cursor: pointer; color: var(--text-muted); border-bottom: 2px solid transparent; }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* QR container */
.qr-container { display: flex; flex-direction: column; align-items: center; padding: 1.5rem 0; }
.qr-container canvas, .qr-container img { display: block; padding: 12px; background: #fff; border-radius: var(--radius); }
.display-code {
  font-size: 2rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin-top: 1rem;
  font-weight: bold;
}
.qr-hint { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.5rem; text-align: center; }

/* Result screen */
.result { text-align: center; padding: 2rem 0; }
.result .outcome { font-size: 2.5rem; font-weight: bold; margin-bottom: 0.5rem; }
.result .outcome.win  { color: var(--accent); }
.result .outcome.loss { color: var(--danger); }
.result .outcome.draw { color: var(--warn); }
.result .points { font-size: 1.2rem; color: var(--text-muted); }

/* Camera scanner */
#scanner-video { width: 100%; border-radius: var(--radius); border: 1px solid var(--border); }
#scanner-canvas { display: none; }

/* Scoreboard */
.scoreboard-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.scoreboard-table th { color: var(--text-muted); text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--border); }
.scoreboard-table td { padding: 0.5rem 0.5rem; border-bottom: 1px solid var(--border); }
.scoreboard-table tr:hover td { background: var(--surface); }
.rank { color: var(--text-muted); width: 2.5rem; }
.rank-top { color: var(--accent); }
.my-row td { background: rgba(139,92,246,.12); font-weight: 600; }

/* Fight history */
.fight-item { display: flex; justify-content: space-between; align-items: center; padding: 0.6rem 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.fight-item:last-child { border-bottom: none; }
.outcome-badge { padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.8rem; font-weight: bold; }
.outcome-badge.win  { background: #00ff8822; color: var(--accent); }
.outcome-badge.loss { background: #ff444422; color: var(--danger); }
.outcome-badge.draw { background: #ffaa0022; color: var(--warn); }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: 0.9rem; }
.alert-error { background: #ff444422; border: 1px solid var(--danger); color: var(--danger); }
.alert-success { background: #00ff8822; border: 1px solid var(--accent); color: var(--accent); }
.alert-info { background: #4488ff22; border: 1px solid #4488ff; color: #88aaff; }

/* Divider */
.divider { display: flex; align-items: center; gap: 0.75rem; margin: 1rem 0; color: var(--text-muted); font-size: 0.85rem; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* Spinner */
.spinner { display: inline-block; width: 1rem; height: 1rem; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Disabled state for pagination buttons */
.btn:disabled, .btn[disabled] { opacity: 0.3; cursor: default; pointer-events: none; }

/* Expand toggle button in fight lookup rows */
.expand-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--accent);
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: .7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.expand-btn:hover { background: var(--surface); }

/* Flag button (inline in scoreboard rows) */
.flag-btn {
  float: right;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 0.2rem;
  line-height: 1;
  opacity: 0.45;
  transition: opacity 0.15s, color 0.15s;
}
.flag-btn:hover { color: var(--danger); opacity: 1; }

/* Flag modal overlay */
.flag-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 100;
  align-items: center;
  justify-content: center;
}
.flag-modal {
  max-width: 360px;
  width: 90%;
  margin: 0;
}

/* Responsive */
@media (max-width: 400px) {
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .display-code { font-size: 1.5rem; letter-spacing: 0.3em; }
}