:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --ink: #1d1d1f;
  --muted: #8a8a8e;
  --line: #e5e4e0;
  --accent: #2f6df6;
  --danger: #d64545;
  --gold: #b8860b;
  --battle: #f5a623;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  display: flex;
  justify-content: center;
  padding: 32px 16px;
}

.app {
  width: 100%;
  max-width: 480px;
}

.header { margin-bottom: 20px; }
.title { margin: 0; font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.subtitle { margin: 4px 0 0; font-size: 13px; color: var(--muted); }

.claim-form { display: flex; gap: 8px; margin-bottom: 24px; }
#claim-input {
  flex: 1;
  padding: 12px 14px;
  font-size: 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  outline: none;
}
#claim-input:focus { border-color: var(--accent); }
#claim-btn {
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
#claim-btn:disabled { background: var(--muted); cursor: not-allowed; }

.current-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.badge {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  background: #eee;
  color: var(--muted);
}
.badge.locked { background: #e8f0fe; color: var(--accent); }
.badge.battle { background: #fef3e2; color: var(--battle); }
.badge.open { background: #e8fae8; color: #2e9e44; }

.current-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 16px;
  margin-bottom: 28px;
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.current-box.battle {
  border-color: var(--battle);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.18);
  animation: pulse 1.2s ease-in-out infinite;
}
.current-box.locked { border-color: var(--accent); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.18); }
  50% { box-shadow: 0 0 0 6px rgba(245, 166, 35, 0.30); }
}

.current-phrase { font-size: 17px; font-weight: 600; word-break: break-word; }
.timer { font-size: 13px; color: var(--muted); white-space: nowrap; }
.muted { color: var(--muted); }

.lb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.lb-list { list-style: none; margin: 0; padding: 0; }
.lb-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 4px;
  border-bottom: 1px solid var(--line);
}
.lb-rank { width: 18px; font-size: 13px; font-weight: 700; color: var(--muted); text-align: right; }
.lb-rank.top { color: var(--gold); }
.lb-phrase {
  flex: 1;
  font-size: 15px;
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  color: var(--muted);
  word-break: break-word;
}
.lb-score { font-size: 12px; color: var(--muted); white-space: nowrap; }

.fineprint { text-align: center; font-size: 12px; color: var(--muted); margin-top: 28px; }

.hidden { display: none !important; }

.flash { animation: flash 0.4s ease; }
@keyframes flash {
  0% { background: #fff7e0; }
  100% { background: var(--card); }
}

@media (prefers-reduced-motion: reduce) {
  .current-box.battle { animation: none; }
}