:root {
  --bg-main: #0a0e17;
  --bg-card: #131b2e;
  --bg-card-hover: #1a2640;
  --bg-card-alt: #162035;
  --border: #233554;
  --border-focus: #48cae4;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --gold: #f59e0b;
  --gold-glow: rgba(245, 158, 11, 0.25);
  --cyan: #06b6d4;
  --accent: #38bdf8;
  --success: #10b981;
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --warning: #f59e0b;
  --silver: #cbd5e1;
  --bronze: #d97706;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Header & Nav */
header.app-header {
  background: rgba(19, 27, 46, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.logo-badge {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0a0e17;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
}

.logo-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
  background: var(--bg-card-alt);
}

.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.live-indicator.offline {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

/* Layout Containers */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem;
}

.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.25rem;
}

/* Cards & Surfaces */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #fff;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #075985);
  box-shadow: 0 0 15px rgba(2, 132, 199, 0.4);
}

.btn-gold {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0a0e17;
  font-weight: 700;
}
.btn-gold:hover {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  box-shadow: 0 0 15px var(--gold-glow);
}

.btn-secondary {
  background: var(--bg-card-alt);
  color: var(--text-main);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-sm {
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.9rem 1.6rem;
  font-size: 1.05rem;
  border-radius: var(--radius);
}

.btn-block {
  width: 100%;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  background: var(--bg-main);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

/* Tables */
.table-responsive {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th {
  background: var(--bg-main);
  color: var(--text-muted);
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(35, 53, 84, 0.5);
  vertical-align: middle;
}

.table tr:hover td {
  background: var(--bg-card-hover);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-gold {
  background: rgba(245, 158, 11, 0.15);
  color: var(--gold);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge-green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Time font */
.mono-time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  padding: 1.5rem;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
  transform: translateY(10px);
  transition: transform 0.2s;
}

.modal-overlay.open .modal-box {
  transform: translateY(0);
}

/* Floating toasts / notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  font-size: 0.9rem;
  animation: slideIn 0.25s forwards;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Touch counters (Judge interface) */
.counter-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
}

.counter-info {
  flex: 1;
  padding-right: 1rem;
}

.counter-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
}

.counter-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.counter-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.counter-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  transition: all 0.15s;
}

.counter-btn:active {
  background: var(--accent);
  color: #0a0e17;
  transform: scale(0.92);
}

.counter-val {
  min-width: 32px;
  text-align: center;
  font-size: 1.25rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--gold);
}

/* Range slider */
.bonus-slider-wrap {
  padding: 1rem 0;
}

.bonus-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--bg-main);
  outline: none;
  accent-color: var(--gold);
}

.bonus-chips {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.6rem;
  flex-wrap: wrap;
}

.bonus-chip {
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
}

.bonus-chip.active {
  background: var(--gold);
  color: #0a0e17;
  border-color: var(--gold);
}

/* Screen leaderboard styles */
.screen-body {
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

/* Dark Theme (LED / Dark hall) */
.screen-body.theme-dark {
  background: radial-gradient(circle at 50% 10%, #152238 0%, #080c14 100%);
  color: #fff;
}
.screen-body.theme-dark .screen-header-bar {
  border-bottom: 1px solid rgba(35, 53, 84, 0.6);
}
.screen-body.theme-dark .screen-event-name {
  background: linear-gradient(135deg, #ffffff 40%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.screen-body.theme-dark .leaderboard-table th {
  color: var(--text-dim);
  border-bottom: 2px solid var(--border);
}
.screen-body.theme-dark .leaderboard-row {
  background: rgba(19, 27, 46, 0.75);
}
.screen-body.theme-dark .leaderboard-row td {
  border-top: 1px solid rgba(35, 53, 84, 0.4);
  border-bottom: 1px solid rgba(35, 53, 84, 0.4);
}
.screen-body.theme-dark .leaderboard-row td:first-child {
  border-left: 1px solid rgba(35, 53, 84, 0.4);
}
.screen-body.theme-dark .leaderboard-row td:last-child {
  border-right: 1px solid rgba(35, 53, 84, 0.4);
}
.screen-body.theme-dark .final-time-cell {
  color: var(--gold);
}

/* LIGHT THEME (Projector / Bright Hall Mode) - Maximum Optical Contrast */
.screen-body.theme-light {
  background: #f8fafc;
  color: #0f172a;
}
.screen-body.theme-light .screen-header-bar {
  background: #ffffff;
  border-bottom: 3px solid #0f172a;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.screen-body.theme-light .screen-event-name {
  color: #0f172a;
  -webkit-text-fill-color: #0f172a;
  background: none;
  font-weight: 950;
  letter-spacing: 1px;
}
.screen-body.theme-light .screen-subtitle {
  color: #334155;
  font-weight: 700;
  letter-spacing: 2px;
}
.screen-body.theme-light .leaderboard-table th {
  color: #0f172a;
  font-weight: 800;
  border-bottom: 3px solid #0f172a;
  background: #e2e8f0;
}
.screen-body.theme-light .leaderboard-row {
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.screen-body.theme-light .leaderboard-row td {
  border-top: 2px solid #cbd5e1;
  border-bottom: 2px solid #cbd5e1;
  color: #0f172a;
}
.screen-body.theme-light .leaderboard-row td:first-child {
  border-left: 2px solid #cbd5e1;
}
.screen-body.theme-light .leaderboard-row td:last-child {
  border-right: 2px solid #cbd5e1;
}
.screen-body.theme-light .rank-badge {
  background: #0f172a;
  color: #ffffff;
  border: none;
  font-weight: 900;
}
.screen-body.theme-light .leader-row-1 {
  background: #fffbeb !important;
  border-left: 6px solid #d97706 !important;
}
.screen-body.theme-light .leader-row-1 .rank-badge {
  background: #f59e0b !important;
  color: #000000 !important;
  border: 2px solid #d97706 !important;
}
.screen-body.theme-light .leader-row-2 {
  background: #f1f5f9 !important;
  border-left: 6px solid #64748b !important;
}
.screen-body.theme-light .leader-row-2 .rank-badge {
  background: #cbd5e1 !important;
  color: #0f172a !important;
  border: 2px solid #94a3b8 !important;
}
.screen-body.theme-light .leader-row-3 {
  background: #fff7ed !important;
  border-left: 6px solid #c2410c !important;
}
.screen-body.theme-light .leader-row-3 .rank-badge {
  background: #ea580c !important;
  color: #ffffff !important;
  border: 2px solid #9a3412 !important;
}
.screen-body.theme-light .final-time-cell {
  color: #0f172a;
  font-weight: 950;
  text-shadow: none;
}
.screen-body.theme-light .btn-fs {
  background: #e2e8f0;
  color: #0f172a;
  border-color: #94a3b8;
}
.screen-body.theme-light .btn-fs:hover {
  background: #cbd5e1;
}
.screen-body.theme-light .badge-gold {
  background: #fef3c7;
  color: #b45309;
  border-color: #f59e0b;
}
.screen-body.theme-light .badge-cyan {
  background: #e0f2fe;
  color: #0369a1;
  border-color: #0284c7;
}
.screen-body.theme-light .badge-danger {
  background: #fee2e2;
  color: #b91c1c;
  border-color: #ef4444;
}

.leader-row {
  transition: transform 0.4s ease, background 0.3s;
}

.leader-row-1 {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.2) 0%, rgba(245, 158, 11, 0.05) 100%) !important;
  border-left: 4px solid var(--gold);
}

.leader-row-2 {
  background: linear-gradient(90deg, rgba(203, 213, 225, 0.15) 0%, rgba(203, 213, 225, 0.03) 100%) !important;
  border-left: 4px solid var(--silver);
}

.leader-row-3 {
  background: linear-gradient(90deg, rgba(217, 119, 6, 0.15) 0%, rgba(217, 119, 6, 0.03) 100%) !important;
  border-left: 4px solid var(--bronze);
}