/* Fitbit High Score – GitHub Pages frontend */
:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #00b4d8;
  --green: #3fb950;
  --gold: #d4a853;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem;
}

.header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2rem;
  margin: 0 0 0.25rem 0;
  font-weight: 700;
}

.tagline {
  color: var(--muted);
  margin: 0 0 1rem 0;
}

.auth-area {
  min-height: 2.5rem;
}

/* Logged-out welcome card */
.welcome {
  text-align: center;
  padding: 2rem 1.5rem;
}

.welcome h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1.35rem;
}

.welcome p {
  color: var(--muted);
  margin: 0 0 1.5rem 0;
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

.welcome .btn-primary {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  filter: brightness(1.1);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.btn.secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--muted);
}

.card {
  background: var(--surface);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.card h2 {
  font-size: 1.1rem;
  margin: 0 0 0.75rem 0;
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 0.75rem 0;
}

.hidden {
  display: none !important;
}

/* Profile */
#profile-content .profile-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

#profile-content .avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
}

#profile-content .stats {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

#profile-content .stat {
  color: var(--muted);
  font-size: 0.85rem;
}

#profile-content .stat strong {
  color: var(--text);
  display: block;
}

/* Leaderboard */
.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th,
.leaderboard-table td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.leaderboard-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
}

.leaderboard-table .rank {
  width: 3rem;
}

.leaderboard-table .rank-1 { color: var(--gold); }
.leaderboard-table .rank-2 { color: var(--muted); }
.leaderboard-table .rank-3 { color: #b8860b; }

.leaderboard-table .avatar-cell {
  width: 40px;
}

.leaderboard-table .avatar-cell img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

/* Challenge controls */
.challenge-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.challenge-controls label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.challenge-controls input[type="date"] {
  background: var(--bg);
  border: 1px solid var(--muted);
  color: var(--text);
  padding: 0.35rem;
  border-radius: 4px;
}

#challenge-content .steps-summary {
  margin-top: 0.5rem;
  font-size: 1rem;
}

#challenge-content .steps-summary strong {
  color: var(--accent);
}

/* Message */
.message {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  max-width: 90%;
  z-index: 10;
}

.message.error {
  background: #8b2635;
  color: #fff;
}

.message.success {
  background: var(--green);
  color: var(--bg);
}

.message.info {
  background: var(--surface);
  border: 1px solid var(--muted);
}