/* ============================================================================
 * Dalmia Computers — Royal V4 Unified Contest, Scoreboard, Winners & Updates CSS
 * Adaptive Royal Light (Default: #FDFEFF + #3F51B5 + #00CFE8) & Royal Dark (#070a26)
 * WCAG 2.1 AA Verified (>= 4.5:1 across all surface/text pairs)
 * ============================================================================ */

:root,
html:not([data-dc-theme="dark"]) {
  --rv4-bg: #FDFEFF;
  --rv4-surface: #FFFFFF;
  --rv4-surface-alt: #F4F7FB;
  --rv4-ink: #0F172A;
  --rv4-ink-body: #1E293B;
  --rv4-muted: #475569;
  --rv4-indigo: #3F51B5;
  --rv4-indigo-strong: #283593;
  --rv4-cyan: #00CFE8;
  --rv4-cyan-ink: #0E7490;
  --rv4-border: rgba(15, 23, 42, 0.14);
  --rv4-shadow: 0 12px 32px rgba(15, 23, 42, 0.07);
  --rv4-good-bg: #ECFDF5;
  --rv4-good-ink: #065F46;
  --rv4-good-border: #10B981;
  --rv4-warn-bg: #EFF6FF;
  --rv4-warn-ink: #1E3A8A;
  --rv4-warn-border: #3F51B5;
}

html[data-dc-theme="dark"] {
  --rv4-bg: #070A26;
  --rv4-surface: #101842;
  --rv4-surface-alt: #172358;
  --rv4-ink: #F8FAFC;
  --rv4-ink-body: #E2E8F0;
  --rv4-muted: #CBD5E1;
  --rv4-indigo: #818CF8;
  --rv4-indigo-strong: #6366F1;
  --rv4-cyan: #00CFE8;
  --rv4-cyan-ink: #67E8F9;
  --rv4-border: rgba(148, 163, 184, 0.28);
  --rv4-shadow: 0 16px 38px rgba(2, 6, 23, 0.48);
  --rv4-good-bg: rgba(16, 185, 129, 0.16);
  --rv4-good-ink: #A7F3D0;
  --rv4-good-border: #34D399;
  --rv4-warn-bg: rgba(63, 81, 181, 0.24);
  --rv4-warn-ink: #E0E7FF;
  --rv4-warn-border: #818CF8;
}

body.rv4-page {
  margin: 0;
  background: var(--rv4-bg);
  color: var(--rv4-ink);
  font-family: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

.rv4-wrap {
  width: min(1200px, calc(100% - 32px));
  margin-inline: auto;
}

.rv4-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--rv4-surface);
  border-bottom: 1px solid var(--rv4-border);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
}

.rv4-topbar {
  background: linear-gradient(90deg, #283593 0%, #3F51B5 65%, #0E7490 100%);
  color: #FFFFFF;
  font-size: 0.82rem;
  padding: 6px 0;
}

.rv4-topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.rv4-topbar a {
  color: #FFFFFF;
  font-weight: 700;
  text-decoration: none;
}

.rv4-nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  flex-wrap: wrap;
}

.rv4-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--rv4-ink);
}

.rv4-brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: contain;
  background: #FFFFFF;
  border: 1px solid var(--rv4-border);
}

.rv4-brand strong {
  display: block;
  font-size: 1.05rem;
  line-height: 1.2;
}

.rv4-brand small {
  display: block;
  font-size: 0.78rem;
  color: var(--rv4-cyan-ink);
  font-weight: 600;
}

.rv4-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.rv4-nav a {
  color: var(--rv4-ink-body);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 6px 10px;
  border-radius: 8px;
}

.rv4-nav a:hover,
.rv4-nav a[aria-current="page"] {
  background: var(--rv4-surface-alt);
  color: var(--rv4-indigo);
}

.rv4-breadcrumb {
  margin: 16px 0 8px;
  font-size: 0.85rem;
  color: var(--rv4-muted);
}

.rv4-breadcrumb a {
  color: var(--rv4-indigo);
  text-decoration: none;
  font-weight: 600;
}

.rv4-banner {
  margin: 14px 0;
  padding: 14px 18px;
  border-radius: 14px;
  background: var(--rv4-warn-bg);
  color: var(--rv4-warn-ink);
  border: 1px solid var(--rv4-warn-border);
  font-size: 0.92rem;
  font-weight: 600;
}

.rv4-hero {
  margin: 18px 0 28px;
  padding: clamp(22px, 4vw, 38px);
  border-radius: 22px;
  background: var(--rv4-surface);
  border: 1px solid var(--rv4-border);
  box-shadow: var(--rv4-shadow);
}

.rv4-eyebrow {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--rv4-cyan-ink);
  background: var(--rv4-surface-alt);
  border: 1px solid var(--rv4-border);
  padding: 4px 11px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.rv4-hero h1 {
  margin: 4px 0 12px;
  font-size: clamp(1.7rem, 3.6vw, 2.55rem);
  line-height: 1.18;
  color: var(--rv4-ink);
}

.rv4-hero p {
  margin: 0 0 18px;
  color: var(--rv4-ink-body);
  max-width: 72ch;
}

.rv4-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.rv4-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 11px;
  font-weight: 700;
  font-size: 0.93rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--rv4-border);
  background: var(--rv4-surface-alt);
  color: var(--rv4-ink);
}

.rv4-btn-primary {
  background: #3F51B5;
  border-color: #283593;
  color: #FFFFFF;
}

.rv4-btn-primary:hover {
  background: #283593;
  color: #FFFFFF;
}

.rv4-kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.rv4-kpi {
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--rv4-surface-alt);
  border: 1px solid var(--rv4-border);
}

.rv4-kpi strong {
  display: block;
  font-size: 1.45rem;
  color: var(--rv4-indigo);
  line-height: 1.2;
}

.rv4-kpi span {
  font-size: 0.83rem;
  color: var(--rv4-muted);
}

.rv4-section {
  margin: 28px 0;
}

.rv4-section h2 {
  margin: 0 0 8px;
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
}

.rv4-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.rv4-card {
  padding: 20px;
  border-radius: 18px;
  background: var(--rv4-surface);
  border: 1px solid var(--rv4-border);
  box-shadow: var(--rv4-shadow);
}

.rv4-card h3 {
  margin: 6px 0 8px;
  font-size: 1.14rem;
}

.rv4-card p {
  margin: 0 0 12px;
  color: var(--rv4-ink-body);
  font-size: 0.93rem;
}

.rv4-table-wrap {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--rv4-border);
  background: var(--rv4-surface);
}

.rv4-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.rv4-table th,
.rv4-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--rv4-border);
}

.rv4-table th {
  background: var(--rv4-surface-alt);
  color: var(--rv4-ink);
  font-weight: 700;
}

.rv4-empty {
  padding: 22px;
  border-radius: 14px;
  background: var(--rv4-surface-alt);
  border: 1px dashed var(--rv4-border);
  color: var(--rv4-muted);
  text-align: center;
  font-weight: 600;
}

.rv4-field {
  margin-bottom: 12px;
}

.rv4-field label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 4px;
}

.rv4-field input,
.rv4-field select,
.rv4-field textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--rv4-border);
  background: var(--rv4-surface);
  color: var(--rv4-ink);
  font: inherit;
}

.rv4-status {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
}

.rv4-status.good {
  background: var(--rv4-good-bg);
  color: var(--rv4-good-ink);
  border: 1px solid var(--rv4-good-border);
}

.rv4-footer {
  margin-top: 48px;
  padding: 28px 0;
  background: var(--rv4-surface-alt);
  border-top: 1px solid var(--rv4-border);
  font-size: 0.9rem;
  color: var(--rv4-muted);
}

.rv4-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.rv4-footer a {
  color: var(--rv4-indigo);
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 640px) {
  .rv4-wrap {
    width: calc(100% - 24px);
  }
  .rv4-grid {
    grid-template-columns: 1fr;
  }
}