:root {
  --app-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --app-page-bg: #020617;
  --app-page-gradient: linear-gradient(135deg, #020617, #0b1120);
  --app-page-text: #e2e8f0;
  --app-surface: #0f172a;
  --app-surface-muted: #1d2540;
  --app-surface-dark: #020617;
  --app-border: rgba(148, 163, 184, 0.35);
  --app-border-strong: rgba(148, 163, 184, 0.6);
  --app-text: #f8fafc;
  --app-text-muted: #cbd5f5;
  --app-text-subtle: #94a3b8;
  --app-shadow-card: 0 18px 32px rgba(2, 6, 23, 0.5);
  --app-radius-lg: 1.25rem;
  --app-radius: 0.85rem;
  --app-gradient-start: #6366f1;
  --app-gradient-end: #7c3aed;
  --app-link: #93c5fd;
  --app-link-hover: #bfdbfe;
  --app-button-primary-text: #fdfcff;
  --app-control-bg: rgba(148, 163, 184, 0.15);
  --app-control-border: rgba(148, 163, 184, 0.55);
  --app-control-focus: rgba(147, 197, 253, 0.55);
  --app-control-indicator: #f8fafc;
  --app-control-size: 1.05rem;
  --app-warning-bg: rgba(251, 191, 36, 0.1);
  --app-warning-border: rgba(251, 191, 36, 0.4);
  --app-warning-text: #fde68a;
  --app-success-bg: rgba(16, 185, 129, 0.12);
  --app-success-border: rgba(16, 185, 129, 0.5);
  --app-success-text: #6ee7b7;
  --app-banner-bg: rgba(99, 102, 241, 0.15);
  --app-banner-border: rgba(129, 140, 248, 0.4);
  --app-status-pill-text: #cbd5f5;
  --app-status-idle-bg: rgba(148, 163, 184, 0.25);
  --app-status-idle-text: #e2e8f0;
  --app-status-progress-bg: rgba(14, 165, 233, 0.35);
  --app-status-progress-text: #7dd3fc;
  --app-status-complete-bg: rgba(34, 197, 94, 0.35);
  --app-status-complete-text: #86efac;
}

@media (prefers-color-scheme: dark) {
  :root {
    --app-page-bg: var(--app-surface-dark);
    --app-page-gradient: linear-gradient(135deg, #0f172a, #020617);
    --app-page-text: #f8fafc;
    --app-surface: #0f172a;
    --app-border: rgba(148, 163, 184, 0.35);
    --app-border-strong: rgba(148, 163, 184, 0.6);
    --app-text: #f8fafc;
    --app-text-muted: #cbd5f5;
    --app-shadow-card: 0 14px 28px rgba(2, 6, 23, 0.65);
    --app-link: #a5b4fc;
    --app-link-hover: #c7d2fe;
    --app-control-bg: rgba(148, 163, 184, 0.25);
    --app-control-border: rgba(148, 163, 184, 0.55);
    --app-control-focus: rgba(99, 102, 241, 0.65);
    --app-control-indicator: #f8fafc;
    --app-banner-bg: rgba(99, 102, 241, 0.15);
    --app-banner-border: rgba(129, 140, 248, 0.4);
    --app-warning-bg: rgba(251, 191, 36, 0.15);
    --app-warning-border: rgba(251, 191, 36, 0.5);
    --app-warning-text: #fde68a;
    --app-success-bg: rgba(16, 185, 129, 0.12);
    --app-success-border: rgba(16, 185, 129, 0.5);
    --app-success-text: #6ee7b7;
  }
}

body.app-theme {
  margin: 0;
  min-height: 100vh;
  background: var(--app-page-gradient, var(--app-page-bg));
  color: var(--app-page-text, var(--app-text));
  font-family: var(--app-font-sans);
}

input[type="checkbox"],
input[type="radio"] {
  -webkit-appearance: none;
  appearance: none;
  inline-size: var(--app-control-size, 1rem);
  block-size: var(--app-control-size, 1rem);
  min-inline-size: var(--app-control-size, 1rem);
  min-block-size: var(--app-control-size, 1rem);
  border: 1px solid var(--app-control-border, rgba(148, 163, 184, 0.4));
  border-radius: 0.35rem;
  background: var(--app-control-bg, rgba(148, 163, 184, 0.15));
  color: var(--app-control-indicator, #fff);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: border-color 120ms ease, background 120ms ease, box-shadow 120ms ease,
    transform 120ms ease;
  vertical-align: middle;
  flex-shrink: 0;
}

input[type="checkbox"]:hover,
input[type="radio"]:hover {
  border-color: var(--app-border-strong, rgba(148, 163, 184, 0.6));
}

input[type="radio"] {
  border-radius: 999px;
}

input[type="checkbox"]::after,
input[type="radio"]::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  opacity: 0;
  transition: transform 140ms ease, opacity 140ms ease;
}

input[type="checkbox"]::after {
  width: 0.35rem;
  height: 0.65rem;
  border-right: 2px solid var(--app-control-indicator, #fff);
  border-bottom: 2px solid var(--app-control-indicator, #fff);
  transform: translate(-50%, -55%) rotate(45deg) scale(0);
  transform-origin: center;
}

input[type="radio"]::after {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--app-control-indicator, #fff);
  transform: translate(-50%, -50%) scale(0.4);
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
  background: linear-gradient(
    135deg,
    var(--app-gradient-start, #6366f1),
    var(--app-gradient-end, #7c3aed)
  );
  border-color: transparent;
  box-shadow: 0 0 0 2px rgba(148, 163, 184, 0.15);
}

input[type="checkbox"]:checked::after {
  opacity: 1;
  transform: translate(-50%, -55%) rotate(45deg) scale(1);
}

input[type="radio"]:checked::after {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--app-surface, #0f172a),
    0 0 0 4px var(--app-control-focus, rgba(147, 197, 253, 0.55));
}

input[type="checkbox"]:disabled,
input[type="radio"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.app-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.app-shell__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.app-shell__header h1 {
  margin: 0.25rem 0 0;
  font-size: 2rem;
  font-weight: 600;
}

.app-shell__meta {
  color: var(--app-text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.app-shell__actions {
  display: flex;
  gap: 0.75rem;
}

.app-button {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.55rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--app-surface);
  color: var(--app-text);
  border-color: var(--app-border);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: box-shadow 150ms ease, transform 150ms ease;
}

.app-button:hover {
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.1);
  transform: translateY(-1px);
}

.app-button--primary {
  background: linear-gradient(135deg, var(--app-gradient-start), var(--app-gradient-end));
  color: var(--app-button-primary-text, #fff);
  border-color: transparent;
}

.app-button--ghost {
  background: transparent;
  color: var(--app-link);
  border-color: transparent;
}

.app-button--danger {
  background: rgba(225, 29, 72, 0.08);
  color: #b91c1c;
  border-color: rgba(248, 113, 113, 0.5);
}

.app-grid {
  display: grid;
  gap: 1.5rem;
}

.app-grid--two {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.app-card {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--app-shadow-card);
  color: var(--app-text);
}

.app-card--bordered {
  border-style: dashed;
}

.app-card--banner {
  background: var(--app-banner-bg);
  border-color: var(--app-banner-border);
  color: var(--app-text);
}

.app-card--gradient {
  background: linear-gradient(135deg, var(--app-gradient-start), var(--app-gradient-end));
  color: #fff;
  border: none;
}

.app-card__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.app-card__subtitle {
  margin: 0.3rem 0 0;
  color: var(--app-text-muted);
  font-size: 0.9rem;
}

.app-stats {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  margin-top: 1.25rem;
}

.app-stat {
  padding: 1rem;
  border-radius: var(--app-radius);
  border: 1px solid var(--app-border);
  background: rgba(148, 163, 184, 0.08);
}

.app-stat__label {
  font-size: 0.8rem;
  color: var(--app-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.app-stat__value {
  font-size: 1.8rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

.app-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  font-size: 0.95rem;
}

.app-table th {
  text-align: left;
  font-weight: 600;
  color: var(--app-text-muted);
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--app-border);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.app-table td {
  padding: 1rem 0.9rem;
  border-bottom: 1px solid var(--app-border);
}

.app-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.app-badge--admin {
  background: rgba(67, 56, 202, 0.12);
  color: var(--app-link);
}

.app-badge--suspended {
  background: rgba(245, 158, 11, 0.15);
  color: #b45309;
}

.app-alert {
  border-radius: var(--app-radius);
  border: 1px solid var(--app-border);
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  background: rgba(148, 163, 184, 0.08);
  color: var(--app-text);
}

.app-alert--warning {
  background: var(--app-warning-bg);
  border-color: var(--app-warning-border);
  color: var(--app-warning-text);
}

.app-alert--info {
  background: var(--app-banner-bg);
  border-color: var(--app-banner-border);
}

.app-alert--success {
  background: var(--app-success-bg);
  border-color: var(--app-success-border);
  color: var(--app-success-text);
}

.app-actions {
  display: grid;
  gap: 1rem;
}

.app-actions--split {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.app-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.app-input {
  border-radius: 0.65rem;
  border: 1px solid var(--app-border);
  padding: 0.55rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--app-surface);
  color: var(--app-text);
}

.app-input:disabled {
  opacity: 0.5;
}

.app-link {
  color: var(--app-link);
  text-decoration: none;
  font-weight: 500;
}

.app-link:hover {
  color: var(--app-link-hover);
  text-decoration: underline;
}

.app-table__empty {
  text-align: center;
  color: var(--app-text-muted);
  padding: 1rem 0;
}

.app-divider {
  height: 1px;
  background: var(--app-border);
  margin: 1.5rem 0;
  border: none;
}

.app-alert-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}