:root {
  color-scheme: light;
  --bg: oklch(0.985 0.006 25);
  --panel: oklch(1 0 0);
  --panel-soft: oklch(0.956 0.013 25);
  --ink: oklch(0.21 0.035 25);
  --muted: oklch(0.42 0.03 25);
  --line: oklch(0.88 0.014 25);
  --brand: oklch(0.34 0.15 28);
  --brand-strong: oklch(0.27 0.14 28);
  --accent: oklch(0.55 0.15 28);
  --danger: oklch(0.54 0.18 28);
  --warning: oklch(0.72 0.14 82);
  --radius: 10px;
  --shadow: 0 8px 24px oklch(0.24 0.03 250 / 0.08);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 48px);
  background: color-mix(in oklch, var(--bg) 90%, white);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: transparent;
  overflow: hidden;
  transform: translateZ(0);
}

.brand-mark img {
  width: 92%;
  height: 92%;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.15;
}

.brand small {
  color: var(--muted);
}

.nav-actions,
.admin-tabs,
.detail-actions,
.admin-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-link,
.admin-tab,
.back-button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 8px;
  padding: 9px 12px;
  cursor: pointer;
  transition: background-color 180ms var(--ease-out-quart), color 180ms var(--ease-out-quart), transform 140ms var(--ease-out-quart);
}

.nav-link:hover,
.admin-tab:hover,
.back-button:hover {
  background: var(--panel-soft);
  color: var(--ink);
  transform: translateY(-1px);
}

.nav-link.is-active,
.admin-tab.is-active {
  background: var(--ink);
  color: white;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.view {
  display: none;
}

.view.is-visible {
  display: block;
  animation: viewIn 220ms var(--ease-out-quart);
}

.narrow {
  width: min(680px, 100%);
}

.library-header,
.section-head,
.admin-layout {
  margin-bottom: 24px;
}

.library-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
  font-size: 2rem;
  line-height: 1.1;
  text-wrap: balance;
}

h2 {
  margin-bottom: 8px;
  font-size: 1.03rem;
  line-height: 1.25;
}

p {
  color: var(--muted);
  line-height: 1.55;
}

.filters {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) repeat(3, minmax(150px, 190px));
  gap: 12px;
  align-items: end;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 650;
}

label span {
  color: var(--muted);
  font-size: 0.86rem;
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  padding: 9px 11px;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in oklch, var(--accent) 40%, transparent);
  outline-offset: 2px;
}

.status-line {
  min-height: 24px;
  margin: 14px 0;
  color: var(--muted);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.resource-card,
.admin-item,
.admin-panel,
.admin-content,
.resource-detail,
.form-stack {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.resource-card {
  overflow: hidden;
}

.card-hit {
  display: grid;
  gap: 12px;
  width: 100%;
  min-height: 190px;
  padding: 18px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color 180ms var(--ease-out-quart), transform 180ms var(--ease-out-quart);
}

.card-hit:hover {
  background: var(--panel-soft);
  transform: translateY(-2px);
}

.file-pill,
.topic-chip {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 24px;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 0.78rem;
  font-weight: 750;
}

.file-pill {
  background: color-mix(in oklch, var(--brand) 13%, white);
  color: var(--brand-strong);
}

.topic-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.topic-chip {
  background: var(--panel-soft);
  color: var(--muted);
}

.card-meta {
  margin: 0;
  color: var(--muted);
}

.primary-action,
.secondary-action,
.danger-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  padding: 9px 14px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  font-weight: 750;
  transition: background-color 180ms var(--ease-out-quart), border-color 180ms var(--ease-out-quart), color 180ms var(--ease-out-quart), transform 140ms var(--ease-out-quart);
}

.primary-action {
  background: var(--brand);
  color: white;
}

.primary-action:hover {
  background: var(--brand-strong);
  transform: translateY(-1px);
}

.secondary-action {
  background: white;
  color: var(--ink);
  border-color: var(--line);
}

.danger-action {
  background: color-mix(in oklch, var(--danger) 10%, white);
  color: var(--danger);
  border-color: color-mix(in oklch, var(--danger) 30%, white);
}

.secondary-action:hover,
.danger-action:hover {
  transform: translateY(-1px);
}

.primary-action:active,
.secondary-action:active,
.danger-action:active,
.nav-link:active,
.admin-tab:active,
.back-button:active {
  transform: translateY(0) scale(0.98);
}

.small {
  min-height: 34px;
  padding: 6px 10px;
  font-size: 0.9rem;
}

.form-stack {
  display: grid;
  gap: 16px;
  padding: 18px;
}

.form-stack.compact {
  box-shadow: none;
  border: 0;
  padding: 0;
  background: transparent;
}

.hint {
  margin: 0;
  font-size: 0.9rem;
}

.import-form {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.resource-detail {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1.2fr);
  gap: 18px;
  padding: 18px;
}

.detail-main {
  display: grid;
  align-content: start;
  gap: 16px;
}

.detail-meta {
  display: grid;
  gap: 12px;
  margin: 0;
}

.detail-meta div {
  display: grid;
  gap: 3px;
}

dt {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

dd {
  margin: 0;
}

.preview-panel {
  min-height: 560px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.preview-panel iframe {
  display: block;
  width: 100%;
  height: 560px;
  border: 0;
  background: white;
}

.preview-panel p {
  padding: 18px;
}

.admin-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
  align-items: start;
}

.admin-panel,
.admin-content {
  padding: 18px;
}

.admin-panel {
  position: sticky;
  top: 86px;
}

.admin-list {
  display: grid;
  gap: 12px;
}

.admin-item {
  display: grid;
  gap: 14px;
  padding: 16px;
  box-shadow: none;
}

.admin-item-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.admin-item h2 {
  margin: 8px 0 4px;
}

.admin-item p,
.admin-identity p {
  margin-bottom: 0;
}

.turnstile-slot {
  min-height: 0;
}

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.resource-card {
  animation: cardIn 260ms var(--ease-out-quint) both;
  animation-delay: calc(var(--i, 0) * 35ms);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 860px) {
  .topbar,
  .library-header,
  .admin-item-head {
    align-items: stretch;
    flex-direction: column;
  }

  .filters,
  .resource-detail,
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-panel {
    position: static;
  }

  .preview-panel,
  .preview-panel iframe {
    min-height: 420px;
    height: 420px;
  }
}

@media (max-width: 560px) {
  main {
    width: min(100% - 20px, 1180px);
    padding-top: 22px;
  }

  .topbar {
    padding-inline: 10px;
  }

  .nav-actions,
  .admin-tabs,
  .detail-actions,
  .admin-actions {
    width: 100%;
  }

  .nav-link,
  .admin-tab,
  .primary-action,
  .secondary-action,
  .danger-action {
    flex: 1;
  }
}