/* ========================================
   Mela Bingo — Educational Demo Styles
   ======================================== */

:root {
  --green: #0d7a3f;
  --green-dark: #065c2d;
  --yellow: #f4c430;
  --red: #c8102e;
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #243044;
  --text: #f0f4f8;
  --text-muted: #94a3b8;
  --border: #2d3a4f;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,0.35);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Noto Sans Ethiopic', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

/* ---------- Header ---------- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.header.compact {
  margin-bottom: 12px;
  padding: 10px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo.small { font-size: 1.1rem; }
.logo-icon { font-size: 1.5rem; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.balance-box {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
}

.balance-box.small { padding: 4px 10px; font-size: 0.85rem; }
.balance-label { color: var(--text-muted); font-size: 0.8rem; margin-right: 4px; }

.back-btn {
  color: var(--text);
  text-decoration: none;
  font-size: 1.4rem;
  padding: 4px 8px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: white;
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  border: 2px solid var(--green);
  color: var(--green);
}
.btn-outline:hover, .btn-outline.active {
  background: var(--green);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-muted); }

.btn-lg { padding: 14px 28px; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px 0 60px;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(90deg, var(--yellow), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 28px;
}

.hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-card-preview { display: flex; justify-content: center; }

.mini-card {
  background: var(--surface);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
  width: 220px;
}

.mini-header {
  text-align: center;
  font-weight: 700;
  letter-spacing: 8px;
  color: var(--yellow);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
}

.mini-cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.mini-cell.free {
  background: var(--green);
  color: white;
}

/* ---------- Features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { margin-bottom: 8px; font-size: 1.1rem; }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ---------- Rooms ---------- */
.rooms-preview h2,
.page-title {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.page-sub { color: var(--text-muted); margin-bottom: 28px; }

.rooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

.rooms-grid.large { gap: 20px; }

.room-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  cursor: pointer;
}

.room-card:hover, .room-card.active {
  border-color: var(--green);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(13,122,63,0.25);
}

.room-card.highlighted {
  border-color: var(--yellow);
  background: linear-gradient(160deg, var(--surface), #2a2410);
}

.room-stake {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--yellow);
  margin-bottom: 6px;
}

.room-name { font-weight: 600; margin-bottom: 8px; }
.room-info, .room-details {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.room-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ---------- Card Selector ---------- */
.card-selector {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  margin-top: 20px;
}

.card-selector h2 { margin-bottom: 16px; }

.card-count-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.card-count-btn {
  width: 48px;
  height: 48px;
  font-size: 1.1rem;
}

/* ---------- Game Page ---------- */
.game-status {
  display: flex;
  justify-content: space-between;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}

.status-item .label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.last-number {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--yellow);
}

.current-call {
  text-align: center;
  margin-bottom: 16px;
}

.call-ball {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--green), var(--green-dark));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
  box-shadow: 0 6px 20px rgba(13,122,63,0.4);
  transition: transform 0.3s;
}

.call-ball.pulse {
  animation: pulse 0.4s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

#callLetter {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  opacity: 0.9;
}

#callNumber {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.call-text {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.game-controls {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

/* ---------- Bingo Cards ---------- */
.cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.bingo-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s;
}

.bingo-card.winner {
  border-color: var(--yellow);
  box-shadow: 0 0 20px rgba(244,196,48,0.35);
}

.card-header {
  background: var(--green-dark);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  text-align: center;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 8px 0;
  color: var(--yellow);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2px;
  padding: 6px;
  background: var(--border);
}

.bingo-cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  font-weight: 600;
  font-size: 1rem;
  cursor: default;
  transition: background 0.2s;
  position: relative;
}

.bingo-cell.marked {
  background: var(--green);
  color: white;
}

.bingo-cell.free {
  background: var(--yellow);
  color: #111;
  font-size: 0.85rem;
}

.bingo-cell.just-marked {
  animation: markPop 0.35s ease;
}

@keyframes markPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

/* ---------- Called History ---------- */
.called-history {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 24px;
}

.called-history h3 {
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--text-muted);
}

.history-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.history-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
}

.history-num.latest {
  background: var(--green);
  color: white;
}

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}

.modal-content {
  background: var(--surface);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  max-width: 360px;
  width: 100%;
  border: 2px solid var(--yellow);
}

.win-icon { font-size: 3rem; margin-bottom: 12px; }
.win-amount {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--yellow);
  margin: 12px 0 24px;
}

/* ---------- Content pages ---------- */
.content-page { max-width: 680px; }
.content-block {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.content-block h2 { margin-bottom: 12px; font-size: 1.2rem; }
.content-block ol, .content-block ul {
  padding-left: 20px;
  color: var(--text-muted);
}
.content-block li { margin-bottom: 8px; }

/* ---------- Disclaimer & Footer ---------- */
.disclaimer {
  background: rgba(200,16,46,0.12);
  border: 1px solid rgba(200,16,46,0.3);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 40px;
  font-size: 0.9rem;
  color: #fca5a5;
}

.footer {
  text-align: center;
  padding: 24px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

.footer.compact { padding: 12px 0; font-size: 0.8rem; }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 24px 0 40px;
  }
  .hero h1 { font-size: 1.8rem; }
  .hero-buttons { justify-content: center; }
  .hero-card-preview { order: -1; }
  .mini-card { width: 180px; }
  .cards-container {
    grid-template-columns: 1fr;
  }
  .game-status { justify-content: space-around; }
}