/* ============================================
   Pithy Docs - Editorial Design System
   A custom theme matching the admin aesthetic
   ============================================ */

/* ============================================
   CSS Variables - Light Mode (Default)
   ============================================ */
:root {
  /* Backgrounds - warm stone palette */
  --bg-canvas: #fafaf9;
  --bg-surface: #f5f5f4;
  --bg-secondary: #e7e5e4;
  --bg-tertiary: #d6d3d1;
  --bg-sidebar: #1c1917;
  --bg-callout: #fffbeb;

  /* Text */
  --text-primary: #1c1917;
  --text-secondary: #57534e;
  --text-muted: #78716c;
  --text-faint: #a8a29e;
  --text-light: #fafaf9;
  --text-sidebar: #a8a29e;
  --text-sidebar-hover: #fafaf9;

  /* Accent - amber */
  --accent: #d97706;
  --accent-hover: #b45309;
  --accent-muted: rgba(217, 119, 6, 0.15);
  --accent-glow: rgba(217, 119, 6, 0.25);

  /* Borders */
  --border: #e7e5e4;
  --border-strong: #d6d3d1;
  --border-sidebar: rgba(255, 255, 255, 0.08);

  /* Code */
  --code-bg: #f5f5f4;
  --code-text: #c2410c;
  --code-border: #e7e5e4;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Layout */
  --sidebar-width: 280px;
  --content-max-width: 780px;
  --header-height: 60px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-canvas);
  min-height: 100vh;
}

/* Sharp corners - Pithy signature */
*, input, button, textarea, select {
  border-radius: 0 !important;
}

/* ============================================
   Layout Container
   ============================================ */
.docs-container {
  display: flex;
  min-height: 100vh;
}

/* ============================================
   Sidebar
   ============================================ */
.docs-sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  color: var(--text-light);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow: hidden;
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-sidebar);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.sidebar-logo:hover {
  opacity: 0.9;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.logo-badge {
  background-color: var(--accent);
  color: var(--bg-sidebar);
  font-size: 0.625rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-sidebar) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--border-sidebar);
}

.nav-section {
  padding: 1.25rem 1.5rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1.5rem;
  color: var(--text-sidebar);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  margin-left: -3px;
}

.nav-link svg {
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-link:hover {
  color: var(--text-sidebar-hover);
  background-color: rgba(255, 255, 255, 0.04);
}

.nav-link:hover svg {
  opacity: 1;
}

.nav-link.active {
  color: var(--accent);
  background-color: var(--accent-muted);
  border-left-color: var(--accent);
}

.nav-link.active svg {
  opacity: 1;
}

.nav-link-child {
  padding-left: 2.5rem;
  font-size: 0.8125rem;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-sidebar);
  display: flex;
  gap: 1rem;
}

.footer-link {
  font-size: 0.75rem;
  color: var(--text-sidebar);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent);
}

/* ============================================
   Main Content Area
   ============================================ */
.docs-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Mobile Header (hidden on desktop) */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
  height: var(--header-height);
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

.menu-toggle svg {
  width: 1.5rem;
  height: 1.5rem;
}

.mobile-logo {
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.05em;
}

/* Search */
.search-container {
  padding: 1.5rem 2rem;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.search-wrapper {
  position: relative;
  max-width: var(--content-max-width);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.125rem;
  height: 1.125rem;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  font-family: 'Segoe UI', sans-serif;
  font-size: 0.875rem;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.search-kbd {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  padding: 0.25rem 0.5rem;
  font-family: 'Segoe UI', sans-serif;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-muted);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  pointer-events: none;
}

/* Search Results */
.search-results {
  display: none;
  position: absolute;
  top: 100%;
  left: 2rem;
  right: 2rem;
  max-width: var(--content-max-width);
  background-color: var(--bg-canvas);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  max-height: 400px;
  overflow-y: auto;
}

.search-result {
  display: block;
  padding: 1rem;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-fast);
}

.search-result:last-child {
  border-bottom: none;
}

.search-result:hover {
  background-color: var(--bg-surface);
}

.search-result-title {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.search-result-excerpt {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.search-no-results {
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1rem 2rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.breadcrumbs .separator {
  margin: 0 0.5rem;
  color: var(--border-strong);
}

.breadcrumbs .current {
  color: var(--text-muted);
}

/* ============================================
   Content Typography
   ============================================ */
.docs-content {
  flex: 1;
  padding: 2rem;
  max-width: calc(var(--content-max-width) + 4rem);
}

/* Headings */
.docs-content h1,
.docs-content h2,
.docs-content h3,
.docs-content h4,
.docs-content h5,
.docs-content h6 {
  font-family: 'Segoe UI', sans-serif;
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

/* H1 - Magazine headline style (Serif) */
.docs-content h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
  margin-top: 0;
  margin-bottom: 2rem;
}

/* H2 - Section markers (Serif) */
.docs-content h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: 3.5rem;
}

/* H3+ - Functional headers (Sans) */
.docs-content h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  margin-top: 2.5rem;
}

.docs-content h4 {
  font-size: 1.125rem;
}

.docs-content h5 {
  font-size: 1rem;
}

.docs-content h6 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* Paragraphs */
.docs-content p {
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

/* Links */
.docs-content a {
  color: var(--accent-hover);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.docs-content a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Lists */
.docs-content ul,
.docs-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.docs-content li {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.docs-content li strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Blockquotes / Callouts */
.docs-content blockquote {
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
  background-color: var(--bg-callout);
  border-left: 3px solid var(--accent);
  color: var(--text-secondary);
}

.docs-content blockquote p {
  margin-bottom: 0;
  color: inherit;
}

.docs-content blockquote p:not(:last-child) {
  margin-bottom: 1rem;
}

/* Callout variants (use with kramdown IAL: {: .note}, {: .warning}, etc.) */
.docs-content blockquote.note,
.docs-content blockquote.tip,
.docs-content blockquote.important,
.docs-content blockquote.warning,
.docs-content blockquote.caution {
  background-color: var(--bg-surface);
  border-left-width: 4px;
  padding: 1rem 1.25rem;
}

.docs-content blockquote.note { border-left-color: #3b82f6; }
.docs-content blockquote.note strong:first-child { color: #3b82f6; }

.docs-content blockquote.tip { border-left-color: #22c55e; }
.docs-content blockquote.tip strong:first-child { color: #22c55e; }

.docs-content blockquote.important { border-left-color: #a855f7; }
.docs-content blockquote.important strong:first-child { color: #a855f7; }

.docs-content blockquote.warning { border-left-color: #f59e0b; }
.docs-content blockquote.warning strong:first-child { color: #f59e0b; }

.docs-content blockquote.caution { border-left-color: #ef4444; }
.docs-content blockquote.caution strong:first-child { color: #ef4444; }

/* Code - Inline */
.docs-content code {
  font-family: 'Geist Mono', ui-monospace, SFMono-Regular, monospace;
  font-size: 0.875em;
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  color: var(--code-text);
  padding: 0.125rem 0.375rem;
}

/* Code - Block */
.docs-content pre {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  overflow-x: auto;
}

.docs-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--text-primary);
  line-height: 1.7;
}

/* Tables */
.docs-content table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.docs-content th {
  background-color: var(--bg-surface);
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.docs-content td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.docs-content tbody tr:hover td {
  background-color: var(--bg-surface);
}

/* Horizontal Rule */
.docs-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

/* Images */
.docs-content img {
  max-width: 100%;
  height: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

/* ============================================
   Page Navigation (Prev/Next)
   ============================================ */
.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.page-nav-link {
  display: flex;
  flex-direction: column;
  padding: 1rem 1.25rem;
  text-decoration: none;
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  max-width: 45%;
}

.page-nav-link:hover {
  border-color: var(--accent);
  background-color: var(--bg-canvas);
}

.page-nav-link.next {
  text-align: right;
  margin-left: auto;
}

.page-nav-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.page-nav-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
}

.page-nav-link:hover .page-nav-title {
  color: var(--accent);
}

/* ============================================
   Footer
   ============================================ */
.docs-footer {
  padding: 2rem;
  margin-top: auto;
  border-top: 1px solid var(--border);
  background-color: var(--bg-surface);
}

.docs-footer p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

/* ============================================
   Mobile Navigation Overlay
   ============================================ */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  transition: opacity var(--transition-base);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 260px;
  }

  .docs-content {
    padding: 1.5rem;
  }

  .search-container {
    padding: 1rem 1.5rem;
  }

  .breadcrumbs {
    padding: 0.75rem 1.5rem;
  }
}

@media (max-width: 768px) {
  .docs-sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    width: 280px;
  }

  .docs-main {
    margin-left: 0;
  }

  .mobile-header {
    display: flex;
  }

  .nav-overlay {
    display: block;
  }

  /* Nav open state */
  body.nav-open .docs-sidebar {
    transform: translateX(0);
  }

  body.nav-open .nav-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  body:not(.nav-open) .nav-overlay {
    pointer-events: none;
  }

  .search-container {
    padding: 1rem;
  }

  .search-results {
    left: 1rem;
    right: 1rem;
  }

  .search-kbd {
    display: none;
  }

  .breadcrumbs {
    padding: 0.75rem 1rem;
  }

  .docs-content {
    padding: 1.5rem 1rem;
  }

  .docs-content h1 {
    font-size: 1.375rem;
  }

  .docs-content h2 {
    font-size: 1.125rem;
    margin-top: 2.5rem;
  }

  .page-nav {
    flex-direction: column;
  }

  .page-nav-link {
    max-width: 100%;
  }

  .page-nav-link.next {
    text-align: left;
  }

  .docs-footer {
    padding: 1.5rem 1rem;
  }
}

/* ============================================
   Dark Mode
   ============================================ */
@media (prefers-color-scheme: dark) {
  :root {
    /* Dark backgrounds */
    --bg-canvas: #0c0a09;
    --bg-surface: #1c1917;
    --bg-secondary: #292524;
    --bg-tertiary: #44403c;
    --bg-sidebar: #0c0a09;
    --bg-callout: rgba(217, 119, 6, 0.1);

    /* Dark text */
    --text-primary: #fafaf9;
    --text-secondary: #d6d3d1;
    --text-muted: #a8a29e;
    --text-faint: #78716c;
    --text-light: #fafaf9;
    --text-sidebar: #a8a29e;
    --text-sidebar-hover: #fafaf9;

    /* Dark accent (brighter for visibility) */
    --accent: #f59e0b;
    --accent-hover: #fbbf24;
    --accent-muted: rgba(245, 158, 11, 0.15);
    --accent-glow: rgba(245, 158, 11, 0.25);

    /* Dark borders */
    --border: #292524;
    --border-strong: #44403c;
    --border-sidebar: rgba(255, 255, 255, 0.06);

    /* Dark code */
    --code-bg: #1c1917;
    --code-text: #fdba74;
    --code-border: #292524;

    /* Dark shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  }

  /* Sidebar border in dark mode */
  .docs-sidebar {
    border-right: 1px solid var(--border-sidebar);
  }

  /* Mobile header dark */
  .mobile-header {
    background-color: var(--bg-surface);
    border-bottom-color: var(--border);
  }

  .menu-toggle {
    color: var(--text-primary);
  }

  .mobile-logo {
    color: var(--text-primary);
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .docs-sidebar,
  .mobile-header,
  .search-container,
  .breadcrumbs,
  .page-nav,
  .docs-footer {
    display: none !important;
  }

  .docs-main {
    margin-left: 0;
  }

  .docs-content {
    max-width: 100%;
    padding: 0;
  }

  .docs-content a {
    color: inherit;
    text-decoration: underline;
  }

  .docs-content a::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }
}

/* ============================================
   Animation - Subtle page load
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.docs-content {
  animation: fadeIn 0.4s ease-out;
}

/* ============================================
   Focus States (Accessibility)
   ============================================ */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 1rem;
  background-color: var(--accent);
  color: var(--bg-sidebar);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}