:root {
  color-scheme: dark;
  --bg: #0b1220;
  --text: #e2e8f0;
  --panel-bg: #e5e7eb;
  --border: #d1d5db;
  --heading: #111827;
  --body-text: #4b5563;
  --brand-accent: #c7d2fe;
  --brand-muted: #94a3b8;
  --button-bg: #111827;
  --button-border: #1f2937;
  --button-text: #e2e8f0;
  --button-primary-bg: #334155;
  --button-primary-border: #334155;
  --button-primary-text: #f8fafc;
  --input-bg: #ffffff;
  --input-text: #111827;
  --input-border: #d1d5db;
  --table-bg: #ffffff;
  --table-text: #111827;
  --table-header-bg: #f1f1f1;
  --shadow: rgba(15, 23, 42, 0.12);
  --shadow-strong: rgba(15, 23, 42, 0.16);
  --announcement-bg: #111827;
  --announcement-text: #e2e8f0;
  --announcement-border: #1f2937;
  --announcement-link: #c7d2fe;
  --logo-bg: #111827;
  --logo-border: #1f2937;
  --logo-text: #e2e8f0;
  --hero-bg: #e5e7eb;
  --card-bg: #edf2f7;
  --outline: #c7d2fe;
  --section-title: #e2e8f0;
  --section-note: #94a3b8;
  --footer: #94a3b8;
  --label: #374151;
  --link: #334155;
  --link-muted: #475569;
  --status-error: #b91c1c;
  --status-success: #166534;
  --badge-bg: rgba(199, 210, 254, 0.2);
  --badge-text: #c7d2fe;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f2ee;
  --text: #1f2937;
  --panel-bg: #fbfaf8;
  --border: #e0ddd7;
  --heading: #111827;
  --body-text: #4b5563;
  --brand-accent: #0b1220;
  --brand-muted: #6b7280;
  --button-bg: #111827;
  --button-border: #1f2937;
  --button-text: #f8fafc;
  --button-primary-bg: #334155;
  --button-primary-border: #334155;
  --button-primary-text: #f8fafc;
  --input-bg: #ffffff;
  --input-text: #111827;
  --input-border: #e0ddd7;
  --table-bg: #ffffff;
  --table-text: #111827;
  --table-header-bg: #f1f1f1;
  --shadow: rgba(15, 23, 42, 0.08);
  --shadow-strong: rgba(15, 23, 42, 0.12);
  --announcement-bg: #1f2937;
  --announcement-text: #e2e8f0;
  --announcement-border: #374151;
  --announcement-link: #c7d2fe;
  --logo-bg: #ffffff;
  --logo-border: #e0ddd7;
  --logo-text: #111827;
  --hero-bg: #f8f6f2;
  --card-bg: #fbfaf8;
  --outline: #4338ca;
  --section-title: #1f2937;
  --section-note: #6b7280;
  --footer: #6b7280;
  --label: #374151;
  --link: #334155;
  --link-muted: #475569;
  --status-error: #b91c1c;
  --status-success: #166534;
  --badge-bg: rgba(2, 6, 23, 0.08);
  --badge-text: #111827;
}

[hidden] {
  display: none !important;
}

.topbar {
  max-width: 1680px;
  margin: 0 auto;
  padding: 20px 24px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--brand-accent);
}

.brand-subtitle {
  font-size: 12px;
  color: var(--brand-muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.auth-user {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}

.auth-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--button-border);
  background: var(--button-bg);
  color: var(--button-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}

.auth-button.primary {
  background: var(--button-primary-bg);
  border-color: var(--button-primary-border);
  color: var(--button-primary-text);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--button-border);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}

@media (max-width: 900px) {
  .topbar {
    flex-wrap: wrap;
    gap: 8px;
  }

  .topbar-right {
    flex-wrap: wrap;
    flex: 1;
    min-width: 0;
    justify-content: flex-end;
  }

  .auth-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}