/* ==========================================================================
   LIVE SCREEN STYLES - Màn hình trình chiếu hội trường 16:9
   Tối ưu: Máy chiếu Full HD 1920x1080 & Laptop 1366x768
   ========================================================================== */

.live-page-body {
  background-color: #f1f5f9;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.live-wrapper {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Header & Fullscreen Button */
.live-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn-fullscreen {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-fullscreen:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: #fff;
}

/* Chế độ giả lập toàn màn hình phòng khi browser/iframe chặn Fullscreen API */
body.pseudo-fullscreen {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 999999 !important;
  margin: 0 !important;
  overflow-y: auto !important;
  background: var(--bg-main) !important;
}

/* Pulsing state badge */
.badge-pulse {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 1rem;
  font-size: var(--font-sm);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  animation: pulse-ring 1.5s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Main Display Banner */
.live-banner {
  text-align: center;
  padding: var(--space-4) 0 var(--space-6);
}

.live-banner h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}

.live-banner p {
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* State Views Container */
.state-view {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

.state-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   VIEW 1: WAITING (Màn hình chờ khai mạc & QR Code lớn)
   ========================================================================== */
.waiting-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-6);
}

.waiting-qr-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-6);
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.qr-box {
  padding: var(--space-4);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-4);
}

.qr-domain-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-size: var(--font-lg);
  font-weight: 700;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--primary-border);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.waiting-instructions {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.instruction-step {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-lg);
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(185, 28, 28, 0.3);
}

.step-content h4 {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.step-content p {
  font-size: var(--font-base);
  color: var(--text-muted);
}

/* ==========================================================================
   VIEW 2: RUNNING (Màn hình đang thi: 4 Khối số to & Progress Bar)
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast);
}

.stat-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--primary);
}

.stat-box.highlight::before {
  background: var(--accent);
}

.stat-box.success::before {
  background: var(--success);
}

.stat-box.info::before {
  background: var(--info);
}

.stat-val {
  font-size: 3.5rem; /* Rất lớn, đọc rõ từ 20m */
  font-weight: 900;
  line-height: 1;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Giant Live Progress Bar */
.live-progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-6);
}

.live-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  font-size: var(--font-base);
  font-weight: 700;
}

.giant-progress-container {
  width: 100%;
  height: 24px;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.giant-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--success));
  width: 0%;
  transition: width 0.8s ease-in-out;
  border-radius: var(--radius-full);
}

.running-teaser-box {
  background: linear-gradient(135deg, #fef2f2, #fffbeb);
  border: 1.5px dashed #fca5a5;
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.running-teaser-box h3 {
  color: var(--primary);
  font-size: var(--font-xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

.running-teaser-box p {
  color: var(--text-muted);
  font-size: var(--font-base);
}

/* ==========================================================================
   VIEW 3: CLOSED (Đóng nhận bài & Đang tổng hợp)
   ========================================================================== */
.closed-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.closed-icon-pulse {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: var(--warning-light);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  animation: pulse-ring 2s infinite;
}

/* ==========================================================================
   VIEW 4: RESULT (Vinh danh Bảng xếp hạng Top 10)
   ========================================================================== */
/* Top 3 Podium */
.podium-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.podium-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 2px solid var(--border-color);
  padding: var(--space-5);
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast);
}

.podium-card.gold {
  border-color: #f59e0b;
  background: linear-gradient(180deg, #fffbeb 0%, #ffffff 100%);
  transform: translateY(-8px);
  box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.25);
}

.podium-card.silver {
  border-color: #94a3b8;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.podium-card.bronze {
  border-color: #d97706;
  background: linear-gradient(180deg, #fffaf0 0%, #ffffff 100%);
}

.podium-medal {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 900;
  color: #fff;
}

.medal-gold {
  background: linear-gradient(135deg, #fbbf24, #d97706);
  box-shadow: 0 4px 10px rgba(217, 119, 6, 0.4);
}

.medal-silver {
  background: linear-gradient(135deg, #cbd5e1, #64748b);
  box-shadow: 0 4px 10px rgba(100, 116, 139, 0.3);
}

.medal-bronze {
  background: linear-gradient(135deg, #f59e0b, #b45309);
  box-shadow: 0 4px 10px rgba(180, 83, 9, 0.3);
}

.podium-name {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 2px;
}

.podium-org {
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  min-height: 38px;
}

.podium-score {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--primary);
}

.podium-duration {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-subtle);
}

/* Leaderboard Table (Ranks 4-10) */
.leaderboard-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  overflow: hidden;
}

.leaderboard-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 var(--space-2);
}

.leaderboard-table th {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-subtle);
  text-align: left;
}

.leaderboard-table td {
  padding: var(--space-3) var(--space-4);
  background-color: var(--bg-body);
  font-size: var(--font-base);
  font-weight: 600;
}

.leaderboard-table tr td:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.leaderboard-table tr td:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: var(--font-base);
}

.rank-other {
  background: #e2e8f0;
  color: #475569;
}

.score-cell {
  font-weight: 800;
  color: var(--primary);
  font-size: var(--font-lg);
}

.duration-cell {
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .waiting-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .podium-grid {
    grid-template-columns: 1fr;
  }
  .podium-card.gold {
    transform: none;
  }
}

@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .stat-val {
    font-size: 2.75rem;
  }
  .live-banner h2 {
    font-size: 1.75rem;
  }
  .leaderboard-table {
    display: block;
    overflow-x: auto;
  }
}