:root {
  --green-dark: #0d4f3c;
  --green: #1a7a5e;
  --green-light: #e8f5f0;
  --gold: #d4a017;
  --bg: #f4f7f6;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #5c6b66;
  --border: #d8e3de;
  --error: #c0392b;
  --success: #1a7a5e;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(13, 79, 60, 0.08);
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background: var(--green-dark);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  padding: env(safe-area-inset-top) 0 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  max-width: 720px;
  margin: 0 auto;
  gap: 0.5rem;
}

.brand {
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.brand-text {
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.container {
  flex: 1;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
  padding-bottom: calc(1rem + env(safe-area-inset-bottom));
}

.site-footer {
  text-align: center;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.8rem;
}

h1 { font-size: 1.4rem; margin: 0 0 1rem; color: var(--green-dark); }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
h3 { font-size: 1rem; margin: 0 0 0.5rem; }

.subtitle { color: var(--muted); margin-top: -0.5rem; margin-bottom: 1.5rem; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-admin { border-color: var(--green); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.2rem;
  border-radius: 8px;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
}

.btn-primary { background: var(--green); color: #fff; }
.btn-secondary { background: var(--green-dark); color: #fff; }
.btn-ghost { background: rgba(255,255,255,0.15); color: #fff; }
.btn-danger { background: var(--error); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.85rem; min-height: 36px; }

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

input[type="text"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="number"] {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  min-height: 44px;
  background: #fff;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 1rem;
}

legend { font-weight: 700; color: var(--green-dark); padding: 0 0.25rem; }

.login-page { max-width: 420px; margin: 0 auto; }
.login-single { margin-top: 0.5rem; }
.login-single form { display: flex; flex-direction: column; gap: 0.25rem; }
.login-rules-link { text-align: center; margin-top: 1.25rem; }
.login-rules-link a { color: var(--green); font-weight: 600; font-size: 0.95rem; }
.rules-back { margin-top: 1rem; }

.flash, .alert {
  padding: 0.75rem 1rem;
  margin: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
}

.flash-success, .alert { background: var(--green-light); color: var(--green-dark); }
.flash-error, .alert-error { background: #fdecea; color: var(--error); }

.tabs {
  display: flex;
  gap: 0.2rem;
  margin-bottom: 1rem;
  background: var(--card);
  padding: 0.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab {
  flex: 1;
  min-width: 4.5rem;
  text-align: center;
  padding: 0.6rem 0.35rem;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  border-radius: 8px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}

.tab.active { background: var(--green); color: #fff; }

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 0.6rem 0.5rem; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; }
tr.qualified { background: var(--green-light); font-weight: 600; }
.empty { text-align: center; color: var(--muted); }

.hint { font-size: 0.8rem; color: var(--muted); margin-top: 0.5rem; }

.match-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow);
}

.match-card.status-completed { border-left: 4px solid var(--green); }
.match-card.status-scheduled { border-left: 4px solid var(--gold); }

.match-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 0.5rem; }

.badge {
  background: var(--green-light);
  color: var(--green-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.court { font-size: 0.8rem; color: var(--muted); }

.match-teams {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.match-teams.vertical { flex-direction: column; align-items: stretch; gap: 0.25rem; }
.match-teams.vertical span,
.match-teams.vertical .team-row { padding: 0.35rem 0.5rem; border-radius: 6px; }
.match-teams.vertical .winner,
.team-row.winner { background: var(--green-light); font-weight: 700; }
.team-row.loser { opacity: 0.65; }

.sets-badge {
  background: var(--green-dark);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.pool-results,
.results-section { margin-top: 1rem; }
.pool-results h3,
.results-section h3 {
  font-size: 0.95rem;
  color: var(--green-dark);
  margin: 1rem 0 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}
.results-section h2 { margin-bottom: 0.5rem; }
.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 2rem 1rem;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

.final-wrap .match-card { border: 2px solid var(--gold); }

.vs { color: var(--muted); font-size: 0.8rem; font-weight: 400; }

.match-info { display: flex; flex-direction: column; gap: 0.15rem; font-size: 0.85rem; }
.datetime { color: var(--muted); }
.score { font-weight: 700; color: var(--green-dark); }
.status-label { font-size: 0.8rem; color: var(--gold); font-weight: 600; }
.status-label.pending { color: var(--muted); }

.bracket-grid { display: flex; flex-direction: column; gap: 1.5rem; }
.final-card { border: 2px solid var(--gold); }
.champion { font-size: 1.1rem; font-weight: 700; color: var(--green-dark); margin: 0.5rem 0 0; }

.admin-nav { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }

.admin-matches { display: flex; flex-direction: column; gap: 0.5rem; }

.admin-match-row {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.75rem;
  background: var(--bg);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border);
  min-height: 44px;
}

.admin-match-row .label { font-weight: 700; font-size: 0.85rem; color: var(--green-dark); }
.admin-match-row .teams { font-weight: 600; }
.admin-match-row .meta { font-size: 0.8rem; color: var(--muted); }

.back-link { margin-bottom: 0.5rem; }
.back-link a { color: var(--green); }

.big-teams { font-size: 1.1rem; font-weight: 700; text-align: center; }
.big-teams span { color: var(--muted); font-weight: 400; font-size: 0.9rem; }

.status-badge {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-grid .btn { grid-column: 1 / -1; }

.form-stack label { margin-bottom: 1rem; }

.set-fieldset { margin-bottom: 0.75rem; }
.set-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.set-row.tiebreak { margin-top: 0.5rem; opacity: 0.85; }

.reset-form { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }

.error-page { text-align: center; padding: 2rem 0; }

.rules-page .card { margin-bottom: 0.75rem; }
.rules-page h2 { margin: 0 0 0.35rem; font-size: 1.15rem; }
.rules-page h3 { margin: 0 0 0.5rem; font-size: 1rem; color: var(--green-dark); }
.rules-page h4 { margin: 1rem 0 0.35rem; font-size: 0.95rem; color: var(--green); }
.rules-page p { margin: 0.5rem 0; font-size: 0.9rem; }
.rules-page ul, .rules-page ol { margin: 0.5rem 0; padding-left: 1.25rem; font-size: 0.9rem; }
.rules-page li { margin-bottom: 0.35rem; }
.rules-org { color: var(--muted); font-size: 0.9rem; }
.rules-highlight {
  background: var(--green-light);
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  border-left: 3px solid var(--green);
  font-weight: 600;
}
.rules-example {
  background: var(--bg);
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
}
.rules-goodluck {
  margin-top: 1rem;
  font-weight: 700;
  color: var(--green-dark);
  text-align: center;
}
.rules-table { width: 100%; font-size: 0.85rem; margin: 0.5rem 0; }
.rules-table th { font-size: 0.75rem; }

@media (min-width: 600px) {
  h1 { font-size: 1.6rem; }
  .bracket-grid { flex-direction: row; }
  .bracket-round { flex: 1; }
}