:root {
  --bg: #121210;
  --surface: #1c1c18;
  --surface-2: #242420;
  --border: #3a3a34;
  --cream: #d6cfb5;
  --gold: #d4af37;
  --muted: #8f8a7d;
  --text: #ece8df;
  --sidebar: 260px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 "Segoe UI", system-ui, sans-serif;
}

code {
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--cream);
  font-size: 0.9em;
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) 1fr;
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.25rem 1rem;
  background: var(--surface);
  border-right: 1px solid var(--border);
}

.sidebar-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.25rem 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
}

.brand-icon {
  width: 36px;
  height: 36px;
}

.sidebar-head strong {
  display: block;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.sidebar-head span {
  color: var(--muted);
  font-size: 0.75rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-item {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  font: inherit;
  cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
  background: var(--surface-2);
  color: var(--cream);
}

.sidebar-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.sidebar-foot a {
  color: var(--gold);
  text-decoration: none;
  font-size: 0.85rem;
}

.main {
  padding: 1.5rem 2rem 3rem;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.hero {
  margin-bottom: 2rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: 0.04em;
}

.lead {
  max-width: 42rem;
  margin: 0;
  color: var(--muted);
}

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

.card {
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.card-tag {
  display: inline-block;
  margin-bottom: 0.6rem;
  color: var(--gold);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.view-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.view-head h1 {
  margin: 0;
  font-size: 1.5rem;
}

.view-head p {
  margin: 0;
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--cream);
  text-decoration: none;
  font-size: 0.85rem;
}

.btn:hover {
  border-color: var(--gold);
}

.frame {
  width: 100%;
  min-height: calc(100vh - 8rem);
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #000;
}

.gallery-item span {
  color: var(--muted);
  font-size: 0.78rem;
}

.design-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.filter-btn {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--gold);
  color: var(--cream);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.gallery-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
}

.gallery-item img,
.gallery-item object {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  background: #0a0a0a;
  padding: 1rem;
}

.gallery-item figcaption {
  padding: 0.75rem 0.9rem;
  border-top: 1px solid var(--border);
}

.gallery-item strong {
  display: block;
  margin-bottom: 0.25rem;
}

.gallery-item span,
.gallery-item a {
  color: var(--muted);
  font-size: 0.82rem;
}

.gallery-item a {
  color: var(--gold);
  text-decoration: none;
}

.docs-layout,
.browse-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1rem;
  min-height: 60vh;
}

.doc-list,
.file-tree {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  overflow: auto;
  max-height: calc(100vh - 10rem);
}

.doc-list button,
.tree-item button {
  display: block;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  text-align: left;
  font: inherit;
  cursor: pointer;
}

.doc-list button:hover,
.doc-list button.active,
.tree-item button:hover {
  background: var(--surface-2);
  color: var(--cream);
}

.doc-content,
.file-preview {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  padding: 1.25rem 1.5rem;
  overflow: auto;
  max-height: calc(100vh - 10rem);
}

.doc-content h1,
.doc-content h2,
.doc-content h3 {
  color: var(--cream);
}

.doc-content a {
  color: var(--gold);
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.doc-content th,
.doc-content td {
  border: 1px solid var(--border);
  padding: 0.45rem 0.6rem;
  text-align: left;
}

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

.file-preview img {
  max-width: 100%;
  border-radius: 8px;
  background: #0a0a0a;
}

.file-preview pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85rem;
}

.tree-dir {
  padding: 0.45rem 0.85rem 0.2rem;
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .nav {
    flex-flow: row wrap;
  }

  .docs-layout,
  .browse-layout {
    grid-template-columns: 1fr;
  }
}