/* ==========================================================================
   Flit - Product Documentation Stylesheet
   Monolithic Brutalism / Architectural Minimalism
   ========================================================================== */

.docs-layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  position: relative;
}

/* ==========================================================================
   Sidebar Navigation
   ========================================================================== */
.docs-sidebar {
  width: 280px;
  flex-shrink: 0;
  border-right: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: 2rem 1.25rem 2.5rem;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.docs-search-box {
  margin-bottom: 2rem;
  position: relative;
}

.docs-search-input {
  width: 100%;
  padding: 0.65rem 0.85rem 0.65rem 2.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  transition: border-color var(--transition-fast);
}

.docs-search-input:focus {
  outline: none;
  border-color: var(--text-primary);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 14px;
  height: 14px;
}

.docs-nav-group {
  margin-bottom: 2rem;
}

.docs-nav-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  padding-left: 0.5rem;
}

.docs-nav-list {
  list-style: none;
}

.docs-nav-item {
  margin-bottom: 0.25rem;
}

.docs-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.docs-nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.docs-nav-link.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
  font-weight: 700;
  border-left: 2px solid var(--text-primary);
}

/* ==========================================================================
   Documentation Content Body
   ========================================================================== */
.docs-content-wrapper {
  flex: 1 1 auto;
  max-width: 940px;
  padding: 3rem 4rem 6rem;
  position: relative;
  animation: fadeInUp 0.4s ease-out;
}

.docs-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.docs-breadcrumbs a:hover {
  color: var(--text-primary);
}

.docs-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
}

.docs-lead {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.75rem;
}

.docs-content h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  margin: 3rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.docs-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin: 2rem 0 0.75rem;
}

.docs-content p {
  font-family: var(--font-sans);
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.docs-content ul, .docs-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
}

.docs-content li {
  margin-bottom: 0.5rem;
  line-height: 1.65;
}

.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.825em;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.45rem;
  color: var(--text-primary);
}

.docs-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

.docs-table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.825rem;
}

.docs-table th, .docs-table td {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}

.docs-table th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.72rem;
}

.docs-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .docs-table tr:hover td {
  background: rgba(20, 20, 19, 0.02);
}

/* ==========================================================================
   Page Navigation Footer
   ========================================================================== */
.docs-nav-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 4.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  gap: 1.5rem;
}

.doc-pager-btn {
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  min-width: 220px;
  transition: border-color var(--transition-fast);
}

.doc-pager-btn:hover {
  border-color: var(--text-primary);
  background: var(--bg-card-hover);
}

.doc-pager-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.doc-pager-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* ==========================================================================
   Right Table of Contents
   ========================================================================== */
.docs-toc {
  width: 240px;
  flex-shrink: 0;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: 3rem 1.5rem;
  font-size: 0.8rem;
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 1rem;
  letter-spacing: 0.25em;
}

.toc-list {
  list-style: none;
  border-left: 1px solid var(--border-subtle);
}

.toc-item a {
  display: block;
  padding: 0.35rem 0 0.35rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.toc-item a:hover {
  color: var(--text-primary);
}

.toc-item a.active {
  color: var(--text-primary);
  border-left-color: var(--text-primary);
  font-weight: 700;
}

@media (max-width: 1200px) {
  .docs-toc { display: none; }
}

@media (max-width: 900px) {
  .docs-sidebar {
    position: fixed;
    left: -280px;
    z-index: 90;
    transition: left var(--transition-normal);
  }
  .docs-sidebar.open {
    left: 0;
  }
  .docs-content-wrapper {
    padding: 2rem 1.5rem 4rem;
  }
}