/* ===== CSS Variables ===== */
:root {
  --green-dark: #1a472a;
  --green-mid: #2d6a4f;
  --green-light: #40916c;
  --gold: #d4a843;
  --gold-light: #e8c96a;
  --white: #ffffff;
  --off-white: #f5f5f0;
  --gray-light: #e0ddd5;
  --gray: #888;
  --text: #1a1a1a;
  --text-light: #555;
  --red: #c0392b;
  --red-light: #fde8e8;
  --blue: #2980b9;
  --blue-light: #e8f0fe;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0,0,0,0.10);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
  --transition: 0.2s ease;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--off-white);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--green-mid); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-dark); }

/* ===== Container ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1rem; width: 100%; }

/* ===== Header ===== */
.site-header {
  background: var(--green-dark);
  color: var(--white);
  padding: 0.75rem 0;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 0.5rem; color: var(--white); font-weight: 700; font-size: 1.15rem; }
.logo:hover { color: var(--gold); }
.logo-icon { font-size: 1.4rem; }
.main-nav { display: flex; align-items: center; gap: 1rem; }
.main-nav a { color: var(--white); font-size: 0.95rem; opacity: 0.9; }
.main-nav a:hover { opacity: 1; color: var(--gold); }
.nav-user { display: flex; align-items: center; gap: 0.5rem; }
.nav-profile-link {
  background: rgba(255,255,255,0.15);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius);
  font-weight: 600;
}
.nav-profile-link:hover { background: rgba(255,255,255,0.25); }
.nav-toggle { display: none; background: none; border: none; color: var(--white); font-size: 1.5rem; cursor: pointer; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
}
.btn-sm { padding: 0.3rem 0.75rem; font-size: 0.85rem; }
.btn-lg { padding: 0.75rem 2rem; font-size: 1.1rem; }
.btn-gold { background: var(--gold); color: var(--green-dark); border-color: var(--gold); }
.btn-gold:hover { background: var(--gold-light); color: var(--green-dark); }
.btn-green { background: var(--green-mid); color: var(--white); border-color: var(--green-mid); }
.btn-green:hover { background: var(--green-dark); }
.btn-red { background: var(--red); color: var(--white); border-color: var(--red); }
.btn-red:hover { background: #a93226; }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.4); }
.btn-outline:hover { border-color: var(--white); color: var(--white); }

/* ===== Alerts ===== */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.95rem;
  transition: opacity 0.3s;
}
.alert-success { background: #e8f5e9; color: #2e7d32; border-left: 4px solid #2e7d32; }
.alert-error { background: var(--red-light); color: var(--red); border-left: 4px solid var(--red); }
.alert-info { background: var(--blue-light); color: var(--blue); border-left: 4px solid var(--blue); }
.alert a { color: inherit; text-decoration: underline; }

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-mid) 100%);
  color: var(--white);
  border-radius: var(--radius);
  margin: 1.5rem 0;
}
.hero h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }
.hero p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 1.5rem; }

/* ===== Cards ===== */
.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card h2 { font-size: 1.3rem; margin-bottom: 1rem; color: var(--green-dark); }
.card-link { display: inline-block; margin-top: 1rem; font-weight: 600; font-size: 0.9rem; }

/* ===== Home Grid ===== */
.home-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 2rem; }

/* ===== Tables ===== */
.ladder-table { width: 100%; border-collapse: collapse; }
.ladder-table th, .ladder-table td { padding: 0.5rem 0.75rem; text-align: left; }
.ladder-table th { font-size: 0.8rem; text-transform: uppercase; color: var(--gray); border-bottom: 2px solid var(--gray-light); }
.ladder-table td { border-bottom: 1px solid var(--gray-light); font-size: 0.95rem; }
.ladder-table tbody tr:hover { background: var(--off-white); }
.ladder-table a { font-weight: 600; }

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-singles { background: var(--green-mid); color: var(--white); }
.badge-doubles { background: var(--blue); color: var(--white); }
.badge-confirmed { background: #e8f5e9; color: #2e7d32; }
.badge-disputed { background: var(--red-light); color: var(--red); }
.badge-arbitrated { background: #fff3e0; color: #e65100; }

/* ===== Match History Header ===== */
.match-history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.match-history-header h2 { margin-bottom: 0; }

/* ===== Pill Toggle ===== */
.pill-group {
  display: inline-flex;
  background: var(--off-white);
  border-radius: 20px;
  padding: 3px;
  gap: 2px;
}
.pill {
  padding: 0.3rem 0.85rem;
  border: none;
  border-radius: 18px;
  background: transparent;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition);
}
.pill:hover { color: var(--text); }
.pill-active {
  background: var(--green-mid);
  color: var(--white);
}
.pill-active:hover { color: var(--white); }

/* ===== Match Cards ===== */
.match-list { display: flex; flex-direction: column; gap: 1rem; }
.match-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--green-mid);
}
.match-card.disputed { border-left-color: var(--red); }
.match-card.arbitrated { border-left-color: #e65100; }
.match-card-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; font-size: 0.85rem; }
.match-card-body { display: flex; align-items: center; gap: 0.75rem; font-size: 1.05rem; }
.match-team { font-weight: 600; }
.match-team.winner { color: var(--green-dark); }
.match-team.winner::before { content: '★ '; color: var(--gold); }
.match-vs { color: var(--gray); font-size: 0.85rem; }
.match-card-footer { margin-top: 0.5rem; font-size: 0.9rem; color: var(--text-light); }
.match-scores { font-family: 'SF Mono', 'Consolas', monospace; }

/* ===== Forms ===== */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.3rem; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--green-mid);
  box-shadow: 0 0 0 3px rgba(45,106,79,0.1);
}
.form-inline { display: flex; gap: 0.75rem; align-items: flex-end; }
.form-inline .form-group { flex: 1; }
fieldset {
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}
fieldset legend {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--green-dark);
  padding: 0 0.4rem;
}

/* ===== Toggle Switch ===== */
.toggle-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.toggle-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--gray-light);
  border-radius: 24px;
  transition: background var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  bottom: 3px;
  background: var(--white);
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch input:checked + .toggle-slider {
  background: var(--green-mid);
}
.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}
.toggle-switch input:focus-visible + .toggle-slider {
  box-shadow: 0 0 0 3px rgba(45,106,79,0.2);
}

/* ===== Page Header ===== */
.page-header { margin: 1.5rem 0 1rem; }
.page-header h1 { font-size: 1.8rem; color: var(--green-dark); }
.page-header p { color: var(--text-light); }

/* ===== Player Profile ===== */
.player-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.player-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--green-mid);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}
.player-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { text-align: center; padding: 1rem; background: var(--off-white); border-radius: var(--radius); }
.stat-card .stat-value { font-size: 1.6rem; font-weight: 700; color: var(--green-dark); }
.stat-card .stat-label { font-size: 0.8rem; color: var(--gray); text-transform: uppercase; }

/* ===== Pagination ===== */
.pagination { display: flex; justify-content: center; gap: 0.5rem; margin: 1.5rem 0; }
.pagination a, .pagination span {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
}
.pagination a { background: var(--white); box-shadow: var(--shadow); }
.pagination a:hover { background: var(--green-mid); color: var(--white); }
.pagination .current { background: var(--green-dark); color: var(--white); font-weight: 700; }

/* ===== Admin ===== */
.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.admin-stat {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  text-align: center;
}
.admin-stat .stat-value { font-size: 2rem; font-weight: 700; color: var(--green-dark); }
.admin-stat .stat-label { font-size: 0.85rem; color: var(--gray); }

.dispute-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--red);
  margin-bottom: 1rem;
}

/* ===== Auth Pages ===== */
.auth-page {
  max-width: 420px;
  margin: 3rem auto;
}
.auth-page .card { text-align: center; }
.auth-page h1 { margin-bottom: 0.5rem; }
.auth-page p { color: var(--text-light); margin-bottom: 1.5rem; }

/* ===== Error Page ===== */
.error-page { text-align: center; padding: 4rem 1rem; }
.error-page h1 { font-size: 4rem; color: var(--green-dark); }
.error-page p { font-size: 1.2rem; color: var(--text-light); margin: 1rem 0 2rem; }

/* ===== Empty State ===== */
.empty { color: var(--gray); font-style: italic; padding: 1rem 0; }

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray);
  border-top: 1px solid var(--gray-light);
}

main.container { padding-top: 0.5rem; padding-bottom: 2rem; }

/* ===== Nav Badge ===== */
.nav-challenges-link { position: relative; }
.nav-badge {
  display: inline-block;
  background: var(--red);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: 10px;
  margin-left: 0.25rem;
  vertical-align: super;
  line-height: 1;
}

/* ===== Challenge Cards ===== */
.challenge-list { display: flex; flex-direction: column; gap: 0.75rem; }
.challenge-card {
  display: block;
  background: var(--white);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--gray-light);
  transition: box-shadow var(--transition);
  color: var(--text);
}
.challenge-card:hover { box-shadow: var(--shadow-lg); color: var(--text); }
.challenge-pending { border-left-color: var(--gold); }
.challenge-accepted { border-left-color: var(--green-mid); }
.challenge-declined { border-left-color: var(--red); }
.challenge-completed { border-left-color: var(--gray); }
.challenge-cancelled { border-left-color: #e65100; }
.challenge-card-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; font-size: 0.85rem; }
.challenge-card-body { display: flex; align-items: center; gap: 0.5rem; font-size: 1.05rem; font-weight: 600; }
.challenge-vs { color: var(--gray); font-weight: 400; font-size: 0.85rem; }
.challenge-date { color: var(--text-light); }
.challenge-card-footer { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-light); font-style: italic; }

/* ===== Challenge Status Badges ===== */
.badge-pending { background: #fff8e1; color: #f57f17; }
.badge-accepted { background: #e8f5e9; color: #2e7d32; }
.badge-declined { background: var(--red-light); color: var(--red); }
.badge-completed { background: #e0e0e0; color: #555; }
.badge-cancelled { background: #fff3e0; color: #e65100; }

/* ===== Challenge Actions ===== */
.challenge-actions { display: flex; gap: 0.75rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.btn-cancel { color: var(--red); border-color: var(--red); }
.btn-cancel:hover { background: var(--red); color: var(--white); }

/* ===== Chat Thread ===== */
.chat-thread {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 500px;
  overflow-y: auto;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
}
.chat-bubble {
  max-width: 75%;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  line-height: 1.5;
}
.chat-mine {
  align-self: flex-end;
  background: var(--green-mid);
  color: var(--white);
}
.chat-mine .chat-sender { color: rgba(255,255,255,0.7); }
.chat-mine .chat-time { color: rgba(255,255,255,0.6); }
.chat-theirs {
  align-self: flex-start;
  background: var(--off-white);
  color: var(--text);
}
.chat-system {
  align-self: center;
  background: var(--blue-light);
  color: var(--blue);
  text-align: center;
  max-width: 85%;
}
.chat-sender { font-size: 0.75rem; font-weight: 600; margin-bottom: 0.15rem; }
.chat-theirs .chat-sender { color: var(--text-light); }
.chat-system .chat-sender { color: var(--blue); }
.chat-time { font-size: 0.7rem; margin-top: 0.25rem; color: var(--gray); }
.chat-system .chat-time { color: rgba(41,128,185,0.7); }
.chat-form { border-top: 1px solid var(--gray-light); padding-top: 0.75rem; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--green-dark);
    padding: 1rem;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
  }
  .main-nav.open { display: flex; }
  .nav-user { flex-direction: column; align-items: flex-start; }
  .home-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.6rem; }
  .form-inline { flex-direction: column; }
  .player-header { flex-direction: column; text-align: center; }
}