:root {
  --online-bg: #071321;
  --online-surface: rgba(9, 19, 32, 0.8);
  --online-card: rgba(12, 24, 41, 0.88);
  --online-border: rgba(124, 146, 186, 0.28);
  --online-text: #e4eefb;
  --online-muted: rgba(205, 222, 247, 0.72);
  --online-accent: #5eead4;
  --online-accent-2: #60a5fa;
}

body.online-body {
  margin: 0;
  min-height: 100vh;
  color: var(--online-text);
  background: radial-gradient(circle at 10% 15%, rgba(94, 234, 212, 0.2), transparent 42%),
    radial-gradient(circle at 90% 20%, rgba(96, 165, 250, 0.25), transparent 45%),
    radial-gradient(circle at 30% 90%, rgba(56, 189, 248, 0.15), transparent 42%),
    var(--online-bg);
}

.online-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.online-hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  padding: 26px 28px;
  background: var(--online-surface);
  border: 1px solid var(--online-border);
  border-radius: 20px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
}

.online-kicker {
  margin: 0 0 6px;
  font-size: 0.85rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--online-muted);
}

.online-title {
  margin: 0;
  font-size: 2.7rem;
}

.online-subtitle {
  margin: 8px 0 0;
  color: var(--online-muted);
  max-width: 560px;
  line-height: 1.6;
}

.online-metrics {
  display: flex;
  gap: 18px;
}

.metric {
  padding: 12px 16px;
  background: rgba(12, 24, 41, 0.7);
  border: 1px solid rgba(124, 146, 186, 0.2);
  border-radius: 14px;
  text-align: right;
}

.metric-label {
  color: var(--online-muted);
  font-size: 0.85rem;
}

.metric-value {
  display: block;
  font-size: 1.6rem;
  margin-top: 4px;
}

.online-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.online-search input {
  width: min(360px, 70vw);
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(124, 146, 186, 0.3);
  background: rgba(10, 20, 35, 0.7);
  color: var(--online-text);
}

.online-status {
  color: var(--online-muted);
}

.online-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.online-card {
  position: relative;
  background: var(--online-card);
  border: 1px solid var(--online-border);
  border-radius: 18px;
  padding: 16px;
  display: grid;
  gap: 12px;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
}

.online-card:hover {
  transform: translateY(-4px);
  border-color: rgba(94, 234, 212, 0.6);
}

.online-card::after {
  content: "";
  position: absolute;
  top: 12px;
  right: 14px;
  width: 10px;
  height: 10px;
  background: var(--online-accent);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(94, 234, 212, 0.8);
  animation: pulse 1.6s ease-in-out infinite;
}

.online-avatar {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(94, 234, 212, 0.2);
  display: grid;
  place-items: center;
  font-weight: 600;
  overflow: hidden;
}

.online-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.online-name {
  font-weight: 600;
  font-size: 1.05rem;
}

.online-login {
  color: var(--online-muted);
  font-size: 0.9rem;
}

.online-page {
  color: var(--online-muted);
  font-size: 0.85rem;
}

.online-detail {
  padding: 22px 24px;
  background: rgba(10, 20, 35, 0.75);
  border: 1px solid var(--online-border);
  border-radius: 18px;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.32);
}

.online-detail h3 {
  margin: 0 0 12px;
}

.detail-empty {
  color: var(--online-muted);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--online-muted);
}

.detail-row strong {
  color: var(--online-text);
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.35); opacity: 1; }
  100% { transform: scale(1); opacity: 0.7; }
}

@media (max-width: 900px) {
  .online-hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .online-metrics {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .online-shell {
    padding: 100px 16px 60px;
  }

  .online-controls {
    flex-direction: column;
    align-items: flex-start;
  }

  .online-search input {
    width: 100%;
  }
}

@media (prefers-color-scheme: light) {
  :root {
    --online-bg: #f5f7fb;
    --online-surface: rgba(255, 255, 255, 0.9);
    --online-card: rgba(255, 255, 255, 0.95);
    --online-border: rgba(148, 163, 184, 0.35);
    --online-text: #1e293b;
    --online-muted: rgba(71, 85, 105, 0.7);
  }

  body.online-body {
    background: radial-gradient(circle at 12% 18%, rgba(56, 189, 248, 0.12), transparent 45%),
      radial-gradient(circle at 88% 20%, rgba(99, 102, 241, 0.12), transparent 42%),
      #f5f7fb;
  }

  body.online-body .online-hero,
  body.online-body .online-card,
  body.online-body .online-detail,
  body.online-body .metric {
    background: var(--online-card) !important;
    border-color: var(--online-border) !important;
    color: var(--online-text) !important;
  }

  body.online-body .online-search input {
    background: rgba(255, 255, 255, 0.9) !important;
    color: var(--online-text) !important;
    border-color: var(--online-border) !important;
  }

  body.online-body .online-kicker,
  body.online-body .online-subtitle,
  body.online-body .metric-label,
  body.online-body .online-login,
  body.online-body .online-page,
  body.online-body .detail-row {
    color: var(--online-muted) !important;
  }
}