:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --surface-2: #f1f0ec;
  --border: rgba(0,0,0,0.12);
  --border-strong: rgba(0,0,0,0.22);
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --accent: #1d9e75;
  --accent-bg: #e1f5ee;
  --danger: #c53030;
  --radius: 10px;
  --radius-lg: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18181b;
    --surface: #232326;
    --surface-2: #2a2a2e;
    --border: rgba(255,255,255,0.12);
    --border-strong: rgba(255,255,255,0.22);
    --text: #f4f4f5;
    --text-muted: #a1a1aa;
    --accent: #5dcaa5;
    --accent-bg: #0f3a2c;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 0.5px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 {
  font-size: 18px;
  font-weight: 500;
  margin: 0;
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 0.75rem 1rem;
  border-bottom: 0.5px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 57px;
  z-index: 9;
}

.tab {
  flex: 1;
  padding: 8px 14px;
  font-size: 13px;
  background: transparent;
  border: 0.5px solid transparent;
  color: var(--text-muted);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
}

.tab.active {
  background: var(--surface-2);
  color: var(--text);
  font-weight: 500;
}

main {
  padding: 1.25rem;
  max-width: 900px;
  margin: 0 auto;
}

h2 {
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 1rem;
}

label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="text"], input[type="number"] {
  width: 100%;
  padding: 9px 12px;
  font-size: 14px;
  border: 0.5px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-bg);
}

button {
  padding: 9px 14px;
  font-size: 13px;
  background: var(--surface);
  border: 0.5px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
}

button:hover { background: var(--surface-2); }
button:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  font-weight: 500;
  padding: 11px 20px;
  font-size: 14px;
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--danger);
}

.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
  margin-bottom: 1.25rem;
}

.format-card {
  padding: 14px;
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  cursor: pointer;
}

.format-card.active {
  border: 2px solid var(--accent);
  padding: 13px;
}

.format-card .title { font-size: 14px; font-weight: 500; }
.format-card .sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.config-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 1.25rem;
}

.player-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  background: var(--surface-2);
  border-radius: var(--radius);
  font-size: 13px;
  margin: 0 6px 6px 0;
}

.player-pill .x {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
}

.add-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.match-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.match-card {
  background: var(--surface);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
}

.match-court {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.team-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
}

.team-names { flex: 1; font-size: 14px; }
.team-row input { width: 64px; text-align: center; }
.divider { height: 0.5px; background: var(--border); margin: 2px 0; }

.round-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 1rem;
}
.round-bar .label { font-size: 13px; color: var(--text-muted); margin-right: 4px; }
.round-bar button.active { background: var(--surface-2); font-weight: 500; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  text-align: left;
  padding: 10px 8px;
  font-weight: 500;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 0.5px solid var(--border);
}
th.num, td.num { text-align: right; }
td {
  padding: 12px 8px;
  border-bottom: 0.5px solid var(--border);
}
tr:first-child td { font-weight: 500; }

.tennis-card {
  background: var(--surface);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.tennis-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
}
.tennis-names { flex: 1; font-size: 15px; font-weight: 500; }
.tennis-sets { display: flex; gap: 6px; }
.tennis-sets span { font-size: 14px; color: var(--text-muted); min-width: 14px; text-align: center; }
.tennis-games { font-size: 20px; font-weight: 500; min-width: 28px; text-align: center; }
.tennis-pts { font-size: 20px; font-weight: 500; min-width: 36px; text-align: center; color: var(--accent); }

.footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 12px;
  color: var(--text-muted);
}

.empty {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  padding: 2rem 0;
}

.note {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: var(--surface);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
}

.switch {
  width: 40px;
  height: 22px;
  background: var(--surface-2);
  border: 0.5px solid var(--border-strong);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s;
}
.switch.on { background: var(--accent); border-color: var(--accent); }
.switch-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transition: left 0.15s;
}
.switch.on .switch-knob { left: 20px; }

.sitout-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 1rem;
  padding: 10px 12px;
  background: var(--surface-2);
  border-radius: var(--radius);
}
.sitout-bar .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-right: 4px;
}
.sitout-pill {
  display: inline-block;
  padding: 4px 10px;
  background: var(--surface);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
}