:root {
  --color-primary: #155eef;
  --color-on-primary: #ffffff;
  --color-accent: #f59e0b;
  --color-on-accent: #172033;
  --color-surface: #f6f8fb;
  --color-surface-raised: #ffffff;
  --color-surface-sunken: #eef2f7;
  --color-text: #172033;
  --color-muted: #667085;
  --color-border: #d9e0ea;
  --color-success: #16803c;
  --color-warning: #b54708;
  --color-danger: #d92d20;
  --font-body: "Segoe UI Variable", "Segoe UI", sans-serif;
  --font-heading: var(--font-body);
  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-lg: 17px;
  --text-xl: 22px;
  --text-2xl: 30px;
  --text-3xl: 38px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 28px;
  --space-7: 40px;
  --space-8: 56px;
  --shadow-sm: 0 1px 2px rgba(23, 32, 51, 0.06);
  --shadow-md: 0 5px 16px rgba(23, 32, 51, 0.1);
  --shadow-lg: 0 16px 32px rgba(23, 32, 51, 0.14);
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}
body {
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin: 0;
}
a {
  color: var(--color-primary);
  text-decoration: none;
}
.preview-root {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.preview-shell {
  display: flex;
  flex: 1;
  min-height: 0;
}
.preview-main {
  flex: 1;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  min-width: 0;
}
.preview-split,
.preview-two-column {
  display: grid;
  gap: var(--space-5);
}
.preview-split {
  grid-template-columns: 1fr 2fr;
}
.preview-two-column {
  grid-template-columns: 1fr 1fr;
}
.preview-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface-raised);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.preview-header__brand,
.preview-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.preview-header__brand {
  font-weight: 700;
}
.preview-header__logo {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-on-primary);
  display: grid;
  place-items: center;
  font-size: var(--text-sm);
}
.preview-header__action {
  color: var(--color-muted);
  display: inline-flex;
}
.preview-nav {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-6);
  background: var(--color-surface-raised);
  border-bottom: 1px solid var(--color-border);
}
.preview-nav__link,
.preview-sidebar__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-muted);
  border-radius: var(--radius-sm);
}
.preview-nav__link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}
.preview-nav__link--active,
.preview-sidebar__item--active {
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  font-weight: 600;
}
.preview-sidebar {
  width: 220px;
  flex-shrink: 0;
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface-sunken);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.preview-sidebar__section {
  padding: var(--space-3) var(--space-2) var(--space-1);
  color: var(--color-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.preview-sidebar__item {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}
.preview-hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #155eef, #174ea6);
  color: var(--color-on-primary);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: var(--shadow-md);
}
.preview-hero__mesh {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background:
    radial-gradient(60% 80% at 100% 0%, #7aa7ff, transparent 70%),
    radial-gradient(60% 80% at 0% 100%, #0e3b8e, transparent 70%);
}
.preview-hero > *:not(.preview-hero__mesh) {
  position: relative;
  z-index: 1;
}
.preview-hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--text-xs);
  font-weight: 700;
  opacity: 0.85;
}
.preview-hero__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  max-width: 28ch;
}
.preview-hero__subtitle {
  max-width: 62ch;
  opacity: 0.9;
}
.preview-hero__actions,
.preview-action-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.preview-kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
}
.preview-kpi,
.preview-card,
.preview-form,
.preview-empty,
.preview-table-wrap {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.preview-kpi {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.preview-kpi__label {
  color: var(--color-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.preview-kpi__value {
  font-size: var(--text-xl);
  font-weight: 700;
}
.preview-kpi__delta {
  color: var(--color-muted);
  font-size: var(--text-xs);
}
.preview-kpi__delta--up {
  color: var(--color-success);
  font-weight: 600;
}
.preview-section-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
}
.preview-section-title__h {
  font-size: var(--text-lg);
  font-weight: 700;
}
.preview-section-title__hint {
  color: var(--color-muted);
  font-size: var(--text-xs);
}
.preview-card-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.preview-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}
.preview-card {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition:
    transform 160ms ease,
    box-shadow 160ms ease;
}
.preview-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.preview-card__title {
  font-weight: 600;
}
.preview-card__body,
.preview-card__meta {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-sm);
}
.preview-card__meta {
  font-size: var(--text-xs);
}
.preview-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
}
.preview-badge--success {
  background: #e7f6ec;
  color: var(--color-success);
}
.preview-badge--warning {
  background: #fff4e5;
  color: var(--color-warning);
}
.preview-badge--danger {
  background: #feeceb;
  color: var(--color-danger);
}
.preview-badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.preview-form {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.preview-form__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.preview-form__label {
  font-size: var(--text-sm);
  font-weight: 600;
}
.preview-form__hint {
  color: var(--color-muted);
  font-size: var(--text-xs);
}
.preview-form__input,
.preview-form__textarea,
.preview-form__select {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
}
.preview-form__textarea {
  min-height: 96px;
  resize: vertical;
}
.preview-form__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}
.preview-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: var(--text-sm);
  font-weight: 600;
}
.preview-btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}
.preview-btn--secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.preview-btn--ghost {
  background: transparent;
  color: var(--color-text);
}
.preview-table-wrap {
  overflow: hidden;
}
.preview-table {
  width: 100%;
  border-collapse: collapse;
}
.preview-table th,
.preview-table td {
  text-align: left;
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.preview-table th {
  background: var(--color-surface-sunken);
  color: var(--color-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.preview-table tr:last-child td {
  border-bottom: 0;
}
.preview-action-bar {
  justify-content: flex-end;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}
.preview-tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
}
.preview-tabs__tab {
  padding: var(--space-2) var(--space-4);
  color: var(--color-muted);
  font-size: var(--text-sm);
}
.preview-tabs__tab--active {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  font-weight: 600;
}
.preview-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-7) var(--space-4);
  text-align: center;
}
.preview-empty__icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: #e6eeff;
  color: var(--color-primary);
}
.preview-empty__title {
  font-weight: 700;
}
.preview-empty__body {
  max-width: 40ch;
  color: var(--color-muted);
  font-size: var(--text-sm);
}
.preview-error {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid #f4b8b4;
  border-radius: var(--radius-md);
  background: #fff4f3;
}
.preview-error__icon {
  color: var(--color-danger);
}
.preview-error__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.preview-error__title {
  font-size: var(--text-sm);
  font-weight: 700;
}
.preview-error__text {
  color: var(--color-muted);
  font-size: var(--text-sm);
}
.preview-footer {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  color: var(--color-muted);
  font-size: var(--text-xs);
  border-top: 1px solid var(--color-border);
}
.preview-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  stroke: currentColor;
  fill: none;
}
.preview-icon--sm {
  width: 14px;
  height: 14px;
}
.preview-icon--lg {
  width: 24px;
  height: 24px;
}
.preview-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: #e6eeff;
  font-size: var(--text-xs);
  font-weight: 700;
}
.preview-skeleton {
  background: linear-gradient(90deg, #e8edf4 25%, #f7f9fc 37%, #e8edf4 63%);
  background-size: 400% 100%;
  border-radius: var(--radius-sm);
  animation: preview-shimmer 1.4s ease infinite;
}
.preview-skeleton--line {
  height: 12px;
  margin-bottom: var(--space-2);
}
.preview-skeleton--title {
  height: 18px;
  width: 40%;
  margin-bottom: var(--space-3);
}
.preview-skeleton--block {
  height: 96px;
}
@keyframes preview-shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: 0 0;
  }
}
@media (max-width: 760px) {
  .preview-sidebar {
    display: none;
  }
  .preview-main {
    padding: var(--space-4);
  }
  .preview-nav {
    overflow-x: auto;
    padding: var(--space-2) var(--space-4);
  }
  .preview-split,
  .preview-two-column {
    grid-template-columns: 1fr;
  }
  .preview-header {
    padding: var(--space-3) var(--space-4);
  }
  .preview-table-wrap {
    overflow-x: auto;
  }
}
@media (prefers-reduced-motion: reduce) {
  .preview-card,
  .preview-skeleton {
    transition: none;
    animation: none;
  }
}