:root {
  --bg: #f5f4f1;
  --card: #ffffff;
  --text: #1b1b1b;
  --muted: #666666;
  --accent: #0b3d91;
  --accent-light: #eef3ff;
  --danger: #b42318;
  --border: #e0ded7;
}

:root[data-theme="dark"] {
  --bg: #0f1217;
  --card: #1b2028;
  --text: #e7ecf3;
  --muted: #a6b0bf;
  --accent: #7aa2f7;
  --accent-light: #1f2a3a;
  --danger: #ef4444;
  --border: #2d3643;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, #f0ede6, #f7f6f3 60%, #ffffff 100%);
}

:root[data-theme="dark"] body {
  background: radial-gradient(circle at top, #111827, #0b0f14 55%, #080b10 100%);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  flex-direction: column;
  font-weight: 600;
}

.brand-mark {
  letter-spacing: 2px;
  font-size: 14px;
  color: var(--accent);
}

.brand-sub {
  font-size: 13px;
  color: var(--muted);
}

nav a {
  margin-left: 16px;
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

main {
  padding: 24px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.card-header h1,
.card-header h2 {
  margin: 0 0 8px 0;
}

.card-header p {
  margin: 0;
  color: var(--muted);
}

.runner-grid {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 1.5fr;
  gap: 24px;
}

.timer-block {
  background: var(--accent-light);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.timer {
  font-size: 36px;
  font-weight: 600;
}

.stage-info {
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.stage-status {
  margin-top: 6px;
  font-weight: 600;
  color: var(--accent);
}

.stage-clock {
  color: var(--muted);
  font-size: 14px;
  margin-top: 4px;
}

.controls button,
button.primary,
.button {
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.small {
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
}

.controls {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

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

.secondary {
  background: #dedbd1;
  color: #2b2b2b;
}

.danger {
  background: var(--danger);
  color: white;
}

.settings {
  display: grid;
  gap: 12px;
  color: var(--muted);
}

.settings h2 {
  margin: 0;
  color: var(--text);
}

.settings label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stage-table,
.sessions-table {
  width: 100%;
  border-collapse: collapse;
}

.stage-table th,
.stage-table td,
.sessions-table th,
.sessions-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 14px;
}

.stage-table tr.active {
  background: var(--accent-light);
}

.summary-form {
  display: grid;
  gap: 16px;
}

.save-status {
  margin: 8px 0 16px;
  color: #b45309;
  font-weight: 600;
}

.voice-status {
  color: var(--muted);
  font-size: 12px;
  min-height: 16px;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal[aria-hidden="false"] {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
}

.modal-card {
  position: relative;
  background: #fff;
  color: #0f172a;
  padding: 20px 24px;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.2);
  width: min(92vw, 360px);
  display: grid;
  gap: 12px;
  z-index: 1;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.countdown-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
}

.form-row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.checkbox-row {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-row label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
}

input[type="text"],
input[type="number"],
textarea,
select {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
}

.stage-remark {
  width: 100%;
  min-height: 48px;
  resize: vertical;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.detail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--muted);
}

.detail-list li {
  margin-bottom: 6px;
}

.subtle {
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.export-links {
  margin-top: 16px;
  display: flex;
  gap: 12px;
}

.trend-row {
  display: grid;
  grid-template-columns: 120px 1fr 180px;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.trend-bar {
  height: 10px;
  background: var(--accent);
  width: var(--width);
  border-radius: 999px;
}

@media (max-width: 900px) {
  .runner-grid {
    grid-template-columns: 1fr;
  }
  .controls {
    flex-wrap: wrap;
  }
  .trend-row {
    grid-template-columns: 1fr;
  }
}