/* ==========================================================================
   sitemd — Default Theme
   Three modes: light, dark, paper. All values via CSS custom properties.
   Mobile-first. Inter font. No external dependencies.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Web Font
   -------------------------------------------------------------------------- */

@font-face {
  font-family: 'Inter';
  src: url('/theme/fonts/inter.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('/theme/fonts/jetbrains-mono.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* --------------------------------------------------------------------------
   CSS Custom Properties — Color Modes
   -------------------------------------------------------------------------- */

:root,
[data-theme="light"] {
  --color-bg: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #f0f1f3;
  --color-text: #111827;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-border: #e5e7eb;
  --color-border-light: #f0f1f3;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-subtle: rgba(37, 99, 235, 0.08);
  --color-code-bg: #f3f4f6;
  --color-code-text: #1f2937;
  --color-kbd-bg: #f3f4f6;
  --color-kbd-border: #d1d5db;
  --color-blockquote-border: #e5e7eb;
  --color-blockquote-bg: transparent;
  --color-selection: rgba(37, 99, 235, 0.15);
  --color-header-bg: rgba(255, 255, 255, 0.85);
  --color-search-highlight: #fde68a;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
  --color-bg: #0b0b0e;
  --color-bg-secondary: #131316;
  --color-bg-tertiary: #1c1c21;
  --color-text: #ececef;
  --color-text-secondary: #9898a0;
  --color-text-tertiary: #65656d;
  --color-border: #26262c;
  --color-border-light: #1c1c21;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-subtle: rgba(37, 99, 235, 0.12);
  --color-code-bg: #17171c;
  --color-code-text: #d4d4dc;
  --color-kbd-bg: #1c1c21;
  --color-kbd-border: #2e2e36;
  --color-blockquote-border: #26262c;
  --color-blockquote-bg: transparent;
  --color-selection: rgba(37, 99, 235, 0.25);
  --color-header-bg: rgba(11, 11, 14, 0.85);
  --color-search-highlight: #854d0e;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-theme="paper"] {
  --color-bg: #f8f5d7;
  --color-bg-secondary: #f2efcf;
  --color-bg-tertiary: #ebe8c6;
  --color-text: #1f1d1a;
  --color-text-secondary: #4b4a47;
  --color-text-tertiary: #9c9a92;
  --color-border: #c3c1ae;
  --color-border-light: #cbc9c0;
  --color-accent: #3a6d78;
  --color-accent-hover: #2d5660;
  --color-accent-subtle: rgba(58, 109, 120, 0.08);
  --color-code-bg: #f0edcb;
  --color-code-text: #1f1d1a;
  --color-kbd-bg: #f0edcb;
  --color-kbd-border: #b8b6a2;
  --color-blockquote-border: #c3c1ae;
  --color-blockquote-bg: transparent;
  --color-selection: rgba(58, 109, 120, 0.12);
  --color-header-bg: rgba(248, 245, 215, 0.85);
  --color-search-highlight: #fde68a;
  --shadow-sm: 0 1px 2px rgba(31, 29, 26, 0.05);
  --shadow-md: 0 2px 8px rgba(31, 29, 26, 0.08);
}

/* --------------------------------------------------------------------------
   Scrollbar
   -------------------------------------------------------------------------- */

* {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--color-border-light) 50%, var(--color-bg)) var(--color-bg);
}

[data-theme="light"] * {
  scrollbar-color: color-mix(in srgb, var(--color-border-light) 65%, var(--color-bg)) var(--color-bg);
}

[data-theme="paper"] * {
  scrollbar-color: color-mix(in srgb, var(--color-border-light) 30%, var(--color-bg)) var(--color-bg);
}

/* --------------------------------------------------------------------------
   CSS Custom Properties — Typography & Spacing
   -------------------------------------------------------------------------- */

:root {
  --font-sans: Inter, system-ui, sans-serif;
  --font-mono: JetBrains Mono, ui-monospace, monospace;

  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 2rem;
  --font-4xl: 2.75rem;

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.01em;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --content-width: 720px;
  --page-width: 1120px;
  --radius: 6px;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

::selection {
  background: var(--color-selection);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

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

/* --------------------------------------------------------------------------
   Skip Link
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  font-size: var(--font-sm);
  font-weight: 500;
  text-decoration: none;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
}

.site-name {
  display: inline-flex;
  align-items: center;
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: var(--tracking-tight);
  transition: color var(--transition-fast);
}

.site-name:hover {
  color: var(--color-accent);
}

.brand-logo {
  height: 28px;
  width: auto;
  vertical-align: middle;
  margin-right: var(--space-xs);
}

.brand-logo--after {
  margin-right: 0;
  margin-left: var(--space-xs);
}

.brand-inline {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  width: fit-content;
  font-size: var(--font-lg);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

.brand-inline .brand-logo {
  height: 1.7em;
  width: auto;
  margin: 0;
  vertical-align: middle;
}

.site-nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.site-nav a {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-text);
}

/* Nav dropdown groups */
.nav-group {
  position: relative;
}

.nav-group-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  transition: color var(--transition-fast);
}

.nav-group-toggle:hover {
  color: var(--color-text);
}

.nav-chevron {
  transition: transform var(--transition-fast);
}

.nav-group:hover .nav-chevron,
.nav-group:focus-within .nav-chevron {
  transform: rotate(180deg);
}

.nav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-sm));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  padding: var(--space-xs) 0;
  z-index: 200;
}

/* Bridge zone so hover doesn't break between toggle and dropdown */
.nav-dropdown::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  height: calc(var(--space-sm) + 8px);
}

.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown,
.nav-group.is-open .nav-dropdown {
  display: block;
}

.nav-group.is-open .nav-chevron {
  transform: rotate(180deg);
}

.nav-dropdown a {
  display: block;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-dropdown a:hover {
  color: var(--color-text);
  background: var(--color-bg-secondary);
}

/* Buttons — universal style used in header, footer, sidebar, and content */
.btn {
  display: inline-flex;
  align-items: center;
  background: var(--btn-bg, var(--color-accent));
  color: #fff !important;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
  font-size: var(--font-sm);
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  border: 1.5px solid transparent;
}

.btn:hover,
.btn:active {
  background: var(--btn-bg-hover, var(--color-accent-hover));
  color: #fff !important;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--btn-bg, var(--color-accent)) !important;
  border-color: var(--btn-bg, var(--color-accent));
}

.btn-outline:hover {
  background: var(--btn-bg, var(--color-accent));
  color: #fff !important;
}

.btn:disabled,
.btn-outline:disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Button row — consecutive buttons on one line */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

/* Big content buttons */
.btn-row-lg .btn {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-base);
}

/* Inline icons */
.inline-icon { display: inline-flex; vertical-align: -0.125em; }
.inline-icon svg { width: 1em; height: 1em; }
.inline-icon[style*="width"] svg { width: 100%; height: 100%; }

/* Button icons */
.btn-icon { display: inline-flex; flex-shrink: 0; }
.btn-icon svg { width: 1em; height: 1em; }
.btn-icon-left { margin-right: 0.4em; }
.btn-icon-right { margin-left: 0.4em; }
.btn-row-lg .btn-icon svg { width: 1.1em; height: 1.1em; }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Theme Toggle
   -------------------------------------------------------------------------- */

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Show only the relevant icon per theme */
.icon-sun,
.icon-moon,
.icon-paper {
  display: none;
}

[data-theme="light"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: block; }
[data-theme="paper"] .icon-paper { display: block; }

/* --------------------------------------------------------------------------
   Mobile Menu Toggle
   -------------------------------------------------------------------------- */

.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-tertiary);
}

.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Main Content
   -------------------------------------------------------------------------- */

.site-main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg) var(--space-4xl);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6,
.content [id] {
  scroll-margin-top: calc(64px + var(--space-md));
}

.content h1 {
  font-size: var(--font-4xl);
  font-weight: 800;
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.content h2 {
  font-size: var(--font-2xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.content h3 {
  font-size: var(--font-xl);
  font-weight: 600;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.content h4 {
  font-size: var(--font-lg);
  font-weight: 600;
  line-height: var(--leading-snug);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.content h5,
.content h6 {
  font-size: var(--font-base);
  font-weight: 600;
  line-height: var(--leading-snug);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.content h6 {
  color: var(--color-text-secondary);
}

.content p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* First paragraph after h1 — subtitle treatment */
.content h1 + p {
  font-size: var(--font-xl);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 2px;
  transition: text-decoration-color var(--transition-fast);
}

.content a:hover {
  text-decoration-color: var(--color-accent);
}

.btn-none {
  cursor: pointer;
}

.btn-silent,
.btn-silent:hover,
.btn-silent:active {
  cursor: default !important;
  background: var(--btn-bg, var(--color-accent));
  color: #fff !important;
}

.btn-silent.btn-outline,
.btn-silent.btn-outline:hover,
.btn-silent.btn-outline:active {
  background: transparent;
  color: var(--btn-bg, var(--color-accent)) !important;
}

.content a.btn {
  text-decoration: none;
}

.content a.btn:hover {
  text-decoration-color: transparent;
}

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

.content em {
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Lists
   -------------------------------------------------------------------------- */

.content ul,
.content ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
}

.content li {
  margin-bottom: var(--space-xs);
  line-height: var(--leading-relaxed);
}

.content li::marker {
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   Blockquotes
   -------------------------------------------------------------------------- */

.content blockquote {
  border-left: 3px solid var(--color-blockquote-border);
  background: var(--color-blockquote-bg);
  padding: var(--space-sm) var(--space-lg);
  margin-bottom: var(--space-md);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.content blockquote p {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Code
   -------------------------------------------------------------------------- */

.content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.content pre {
  margin-bottom: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-code-bg);
  border-radius: var(--radius);
  overflow-x: auto;
  border: 1px solid var(--color-border-light);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.content pre code {
  background: none;
  padding: 0;
  font-size: var(--font-sm);
  line-height: var(--leading-normal);
  color: var(--color-code-text);
}

.copy-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-xs);
  font-family: var(--font-sans);
  font-weight: 500;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), background-color var(--transition-fast);
}

.content pre:hover .copy-btn {
  opacity: 1;
}

.copy-btn:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */

.content table {
  width: 100%;
  margin-bottom: var(--space-md);
  border-collapse: collapse;
  font-size: var(--font-sm);
}

.content th,
.content td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.content th {
  font-weight: 600;
  color: var(--color-text);
}

.content td {
  color: var(--color-text-secondary);
}

.content thead th {
  border-bottom: 2px solid var(--color-border);
}

/* Responsive table wrapper */
.content .table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* --------------------------------------------------------------------------
   Horizontal Rule
   -------------------------------------------------------------------------- */

.content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-2xl) 0;
}

/* --------------------------------------------------------------------------
   Images
   -------------------------------------------------------------------------- */

.content img {
  --img-corners: var(--image-corners, var(--radius));
  border-radius: var(--img-corners);
  margin-bottom: var(--space-md);
  height: auto;
}

/* Image expand — clickable lightbox trigger */
.img-expand {
  display: inline-block;
  cursor: pointer;
  text-decoration: none;
}
.img-expand img {
  transition: opacity 0.2s;
}
.img-expand:hover img {
  opacity: 0.85;
}

/* Image rotate — JS measures the image on load and sets the wrapper's
   dimensions to match the post-rotation bounding box so layout flows
   naturally. The transform is applied to the img via data-rotate. */
.img-rotate {
  display: block;
  position: relative;
  margin-bottom: var(--space-md);
  overflow: hidden;
}
.img-rotate img {
  display: block;
  margin: 0;
}

/* Image row — equal-height flexbox row */
.image-row {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  align-items: stretch;
}
.image-row-item {
  flex: 1 1 0;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: var(--img-corners, var(--image-corners, var(--radius)));
}
.image-row-item .img-expand {
  display: block;
  width: 100%;
  height: 100%;
}
.image-row-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
  border-radius: 0;
}

/* Gallery — grid with optional lightbox */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
.gallery-item {
  margin: 0;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: var(--gallery-radius, var(--img-corners, var(--image-corners, var(--radius))));
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
  border-radius: 0;
  transition: transform 0.2s;
}
.gallery-item:not(.gallery-static .gallery-item):hover img {
  transform: scale(1.03);
}
.gallery-item .img-expand {
  display: block;
  width: 100%;
  height: 100%;
}

[data-lightbox] {
  cursor: zoom-in;
}

/* Lightbox overlay */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.2s;
}
.lightbox-overlay[hidden] {
  display: none;
}
.lightbox-overlay img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius);
  margin: 0;
}
.lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: #fff;
  font-size: 32px;
  cursor: pointer;
  line-height: 1;
  padding: 8px;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.lightbox-close:hover {
  opacity: 1;
}
.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #fff;
  font-size: 36px;
  cursor: pointer;
  padding: 16px;
  opacity: 0.6;
  transition: opacity 0.2s;
  user-select: none;
}
.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
}
.lightbox-prev {
  left: 8px;
}
.lightbox-next {
  right: 8px;
}
.lightbox-caption {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-sm);
  text-align: center;
  max-width: 80vw;
  padding: 4px 12px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--color-border);
  transition: border-color var(--transition-normal);
}

.footer-inner {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-group h4 {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-sm) 0;
}

.footer-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-group li {
  margin-bottom: var(--space-xs);
}

.footer-group a {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-social a {
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

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

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-md);
  font-weight: 600;
  line-height: 1;
  color: var(--color-text);
}

.footer-brand .brand-logo {
  height: 22px;
}

.footer-copyright {
  font-size: var(--font-sm);
  color: var(--color-text-tertiary);
  margin: 0;
}

.footer-tagline {
  font-size: var(--font-sm);
  color: var(--color-text-tertiary);
  margin: var(--space-xs) 0 0 0;
}

.footer-meta {
  display: flex !important;
  justify-content: space-between !important;
  align-items: flex-end !important;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 0;
}

.sitemd-badge {
  font-size: var(--font-xs) !important;
  color: var(--color-text-tertiary) !important;
  margin: 0 !important;
  display: inline !important;
  visibility: visible !important;
}

.sitemd-badge a {
  color: var(--color-accent) !important;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   Homepage — Hero
   -------------------------------------------------------------------------- */

.content h1:first-child {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  margin-top: var(--space-xl);
}

/* --------------------------------------------------------------------------
   Sidebar Layout
   -------------------------------------------------------------------------- */

.site-main--sidebar {
  display: flex;
  gap: var(--space-2xl);
  max-width: var(--page-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

.site-main--sidebar .content {
  flex: 1;
  min-width: 0;
  max-width: var(--content-width);
}

.sidebar-aside {
  width: 220px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--space-2xl) + 60px);
  align-self: flex-start;
  max-height: calc(100vh - var(--space-2xl) - 60px - var(--space-2xl));
  overflow-y: auto;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav a:not(.btn) {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: 6px;
  transition: color var(--transition-fast), background var(--transition-fast);
  line-height: var(--lh-normal);
}

.sidebar-nav a:not(.btn):hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.sidebar-nav a:not(.btn).active {
  color: var(--color-accent);
  background: var(--color-surface);
  font-weight: 550;
}

/* Sidebar nested anchors */
.sidebar-anchors {
  position: relative;
}

.sidebar-anchors > a {
  padding-right: 28px;
}

.sidebar-anchors-toggle {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 32px;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: 6px;
  transition: color 150ms ease, transform 150ms ease;
}

.sidebar-anchors-toggle:hover {
  color: var(--color-text);
}

.sidebar-anchors-toggle[aria-expanded="false"] svg {
  transform: rotate(-90deg);
}

.sidebar-anchors-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-left: var(--space-md);
}

.sidebar-anchors-list[hidden] {
  display: none;
}

.sidebar-anchors-list a {
  display: block;
  padding: 2px var(--space-sm);
  font-size: var(--font-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: 6px;
  transition: color 150ms ease;
}

.sidebar-anchors-list a:hover {
  color: var(--color-text);
}

.sidebar-anchors-list a.active {
  color: var(--color-accent);
  font-weight: 550;
}

.sidebar-toggle {
  display: none;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  font-size: var(--font-sm);
  font-family: inherit;
  cursor: pointer;
  margin-bottom: var(--space-md);
}

/* --------------------------------------------------------------------------
   Embeds
   -------------------------------------------------------------------------- */

.embed {
  position: relative;
  width: 100%;
  margin: var(--space-lg) 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.embed--video {
  padding-top: 56.25%;
}

.embed--video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.embed--tweet {
  max-width: 550px;
}

.embed--tweet iframe {
  width: 100%;
  height: 500px;
  border: 0;
}

.embed--reddit {
  max-width: 640px;
}

.embed--reddit .reddit-embed-bq {
  margin: 0 !important;
}

.embed--instagram {
  max-width: 540px;
}

.embed--instagram iframe {
  width: 100%;
  height: 700px;
  border: 0;
}

.embed--linkedin {
  max-width: 550px;
}

.embed--linkedin iframe {
  width: 100%;
  height: 500px;
  border: 0;
}

.embed--tiktok {
  max-width: 340px;
}

.embed--tiktok iframe {
  width: 100%;
  height: 725px;
  border: 0;
}

.embed--spotify {
  height: 352px;
}

.embed--spotify iframe {
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: var(--radius);
}

.embed--codepen {
  padding-top: 65%;
}

.embed--codepen iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* --------------------------------------------------------------------------
   Card Grid
   -------------------------------------------------------------------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card-clickable:hover {
  border-color: var(--color-text-tertiary);
  box-shadow: var(--shadow-md);
}

.card .card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  margin: 0;
  border-radius: var(--radius) var(--radius) 0 0;
}

/* Card icons (in place of images) */
.card-icon-wrap {
  display: flex;
  align-items: center;
  padding: var(--space-lg) var(--space-lg) 0;
}
.card-icon-wrap svg {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  stroke-width: 1.5;
}

.card-body {
  padding: var(--space-md) var(--space-lg);
}

.card .card-title {
  font-size: var(--font-lg);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--color-text);
  margin: 0 0 var(--space-sm) 0;
}

.card-text {
  font-size: var(--font-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-md) 0;
}

.card-text:last-child {
  margin-bottom: 0;
}

.card-link {
  display: inline-block;
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
  z-index: 2;
}

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

.card-clickable {
  position: relative;
  cursor: pointer;
}
.card-overlay-link {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* Banner card — matches content width */
.card--banner {
  width: 100%;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.card--banner .card-image {
  height: auto;
  max-height: 320px;
}

.card--banner .card-body {
  padding: var(--space-lg) var(--space-xl);
}

.card--banner .card-title {
  font-size: var(--font-xl);
}

/* Card Carousel */
.card-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}
.card-carousel-track {
  position: relative;
  width: 100%;
  height: 200px;
}
.card-carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card-carousel-slide--active {
  opacity: 1;
}
.card-carousel-slide .card-image {
  border-radius: 0;
}
.card-carousel-prev,
.card-carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
  opacity: 0;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-carousel:hover .card-carousel-prev,
.card-carousel:hover .card-carousel-next {
  opacity: 1;
}
.card-carousel-prev { left: 6px; }
.card-carousel-next { right: 6px; }
.card-carousel-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}
.card-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.5);
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-fast);
}
.card-carousel-dot--active {
  background: #fff;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.6);
}
.card--banner .card-carousel-track {
  height: auto;
  max-height: 320px;
}
.card--banner .card-carousel-slide {
  position: relative;
}
.card--banner .card-carousel-slide:not(.card-carousel-slide--active) {
  position: absolute;
}

/* --------------------------------------------------------------------------
   Author Card
   -------------------------------------------------------------------------- */

.author-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.author-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.author-card .author-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  margin: 0;
}

.author-body {
  flex: 1;
  min-width: 0;
}

.author-name {
  font-size: var(--font-lg);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--color-text);
  margin: 0;
}

.author-role {
  font-size: var(--font-sm);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.author-bio {
  font-size: var(--font-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin: var(--space-sm) 0 0;
}

.author-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  margin-top: var(--space-sm);
}

.author-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-xs);
  color: var(--color-text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.author-link svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .author-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .author-links {
    justify-content: center;
  }
}

/* --------------------------------------------------------------------------
   Dynamic Data
   -------------------------------------------------------------------------- */

.sitemd-data {
  margin: var(--space-xl) 0;
}

.sitemd-data-loading {
  text-align: center;
  color: var(--color-text-tertiary);
  padding: var(--space-xl) 0;
  animation: sitemd-data-pulse 1.5s ease-in-out infinite;
}

@keyframes sitemd-data-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.sitemd-data-error {
  text-align: center;
  padding: var(--space-lg);
  color: var(--color-text-secondary);
}

.data-error-text {
  margin: 0 0 var(--space-sm) 0;
}

.data-error-retry {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-xs) var(--space-md);
  color: var(--color-text);
  cursor: pointer;
  font-size: var(--font-sm);
}

.data-error-retry:hover {
  border-color: var(--color-text-tertiary);
}

.sitemd-data-empty {
  text-align: center;
  color: var(--color-text-tertiary);
  padding: var(--space-xl) 0;
  font-size: var(--font-sm);
}

/* Data list display */
.sitemd-data-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.data-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.data-list-item:last-child {
  border-bottom: none;
}

.data-list-thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.data-list-body {
  flex: 1;
  min-width: 0;
}

.data-list-title {
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--font-base);
}

a.data-list-title:hover {
  color: var(--color-accent);
}

.data-list-text {
  margin: var(--space-xs) 0 0 0;
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Data table display */
.sitemd-data-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.sitemd-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-sm);
}

.sitemd-data-table th {
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.sitemd-data-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.sitemd-data-table tbody tr:hover {
  background: var(--color-bg-secondary);
}

.data-table-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  white-space: nowrap;
}

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

/* Data detail display */
.sitemd-data-detail {
  margin: 0;
}

.data-detail-row {
  display: flex;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-lg);
}

.data-detail-row:last-child {
  border-bottom: none;
}

.data-detail-label {
  font-weight: 600;
  color: var(--color-text);
  min-width: 160px;
  flex-shrink: 0;
  font-size: var(--font-sm);
}

.data-detail-value {
  color: var(--color-text-secondary);
  font-size: var(--font-sm);
  margin: 0;
}

/* Modal detail triggers */
.data-detail-trigger {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.data-detail-trigger:hover {
  color: var(--color-accent-hover);
}

.card-link .data-detail-trigger {
  font-weight: inherit;
}

/* Pagination */
.data-pagination-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-lg) 0 0 0;
}

.data-page-btn {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-xs) var(--space-md);
  color: var(--color-text);
  cursor: pointer;
  font-size: var(--font-sm);
  transition: border-color var(--transition-fast);
}

.data-page-btn:hover:not([disabled]) {
  border-color: var(--color-text-tertiary);
}

.data-page-btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}

.data-page-info {
  font-size: var(--font-sm);
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   Screen-reader-only (hidden: / /hidden)
   -------------------------------------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --------------------------------------------------------------------------
   Alignment
   -------------------------------------------------------------------------- */

.align-center { text-align: center; }
.align-right  { text-align: right; }
.align-left   { text-align: left; }

.align-center > .btn-row,
.align-center > .image-row { justify-content: center; }
.align-right  > .btn-row,
.align-right  > .image-row { justify-content: flex-end; }
.align-left   > .btn-row,
.align-left   > .image-row { justify-content: flex-start; }

.align-center > p > img,
.align-center > img { display: block; margin-inline: auto; }
.align-center > .brand-inline { margin-inline: auto; }
.align-right  > p > img,
.align-right  > img { display: block; margin-inline: auto 0; }
.align-right  > .brand-inline { margin-inline: auto 0; }

.align-center > ul,
.align-center > ol,
.align-center > table,
.align-center > blockquote,
.align-center > pre,
.align-center > .embed {
  width: fit-content;
  margin-inline: auto;
  text-align: start;
}

.align-right > ul,
.align-right > ol,
.align-right > table,
.align-right > blockquote,
.align-right > pre,
.align-right > .embed {
  width: fit-content;
  margin-inline: auto 0;
  text-align: start;
}

/* --------------------------------------------------------------------------
   Responsive — Mobile
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm) 0;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-base);
  }

  .nav-group-toggle {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-base);
    width: 100%;
    justify-content: space-between;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    border: none;
    box-shadow: none;
    min-width: auto;
    padding: 0;
    background: var(--color-bg-secondary);
  }

  .nav-dropdown a {
    padding: var(--space-xs) var(--space-lg) var(--space-xs) var(--space-2xl);
    font-size: var(--font-base);
  }

  .nav-cta {
    margin: var(--space-xs) var(--space-lg);
    justify-content: center;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .site-main {
    padding: var(--space-2xl) var(--space-md) var(--space-3xl);
  }

  .content h1:first-child {
    margin-top: var(--space-md);
  }

  .header-inner {
    padding: var(--space-sm) var(--space-md);
  }

  /* Sidebar layout — stack on mobile */
  .site-main--sidebar {
    flex-direction: column;
    gap: 0;
    padding: var(--space-xl) var(--space-md) var(--space-3xl);
  }

  .sidebar-aside {
    position: static;
    width: 100%;
    max-height: none;
    overflow: visible;
    display: none;
  }

  .sidebar-aside.is-open {
    display: block;
    margin-bottom: var(--space-lg);
  }

  .sidebar-toggle {
    display: block;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .card-image {
    height: 160px;
  }

  .card--banner .card-image {
    height: 200px;
  }

  .card-carousel-track {
    height: 160px;
  }

  .card-carousel-prev,
  .card-carousel-next {
    opacity: 1;
  }

  .image-row {
    flex-wrap: wrap;
  }
  .image-row-item {
    flex: 1 1 45%;
  }

  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .lightbox-prev,
  .lightbox-next {
    font-size: 28px;
    padding: 10px;
  }

  .data-detail-row {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .data-detail-label {
    min-width: auto;
  }

  .data-list-thumb {
    width: 40px;
    height: 40px;
  }
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */

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

  html {
    scroll-behavior: auto;
  }
}

/* --------------------------------------------------------------------------
   Focus Indicators
   -------------------------------------------------------------------------- */

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

/* --------------------------------------------------------------------------
   Search Toggle
   -------------------------------------------------------------------------- */

.search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.search-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
}

/* --------------------------------------------------------------------------
   Search Overlay
   -------------------------------------------------------------------------- */

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.search-overlay[hidden] {
  display: none;
}

.search-dialog {
  width: 100%;
  max-width: 560px;
  margin: 0 var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  box-shadow: var(--shadow-md), 0 16px 48px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-sm);
}

.search-input-icon {
  flex-shrink: 0;
  color: var(--color-text-tertiary);
}

.search-input {
  flex: 1;
  border: none;
  background: none;
  font-size: var(--font-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  outline: none;
  padding: var(--space-xs) 0;
}

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

.search-results {
  max-height: 400px;
  overflow-y: auto;
}

.search-result {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-fast);
}

.search-result:hover,
.search-result.active {
  background: var(--color-bg-secondary);
}

.search-result-title {
  font-weight: 600;
  font-size: var(--font-sm);
}

.search-result-snippet {
  font-size: var(--font-xs);
  color: var(--color-text-secondary);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-result mark,
.search-result-snippet mark {
  background: var(--color-search-highlight);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}

.search-empty {
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-sm);
}

.search-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-xs);
  color: var(--color-text-tertiary);
}

.search-footer kbd {
  display: inline-block;
  padding: 1px 5px;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  background: var(--color-kbd-bg);
  border: 1px solid var(--color-kbd-border);
  border-radius: 3px;
  line-height: 1.4;
}

.search-footer-sep {
  opacity: 0.4;
}

/* --------------------------------------------------------------------------
   Sidebar Search
   -------------------------------------------------------------------------- */

.sidebar-search {
  position: sticky;
  top: -2px;
  z-index: 10;
  background: var(--color-bg);
  padding-top: 2px;
  padding-bottom: var(--space-sm);
}

.sidebar-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.sidebar-search-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
}

.sidebar-search.is-open .sidebar-search-btn {
  display: none;
}

.sidebar-search-input {
  width: 100%;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  outline: none;
  box-sizing: border-box;
}

.sidebar-search-input[hidden] {
  display: none;
}

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

.sidebar-search-results {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 50;
  margin-top: 4px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  box-shadow: var(--shadow-md);
  max-height: 320px;
  overflow-y: auto;
}

.sidebar-search-heading {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-xs);
  color: var(--color-text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.sidebar-search-group + .sidebar-search-group .sidebar-search-heading {
  border-top: 1px solid var(--color-border-light);
}

.sidebar-search-result {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.sidebar-search-result:hover,
.sidebar-search-result.active {
  background: var(--color-bg-secondary);
}

.sidebar-search-result-title {
  font-weight: 500;
}

.sidebar-search-result-snippet {
  font-size: var(--font-xs);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sidebar-search-result mark {
  background: var(--color-search-highlight);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}

.sidebar-search-empty {
  padding: var(--space-sm) var(--space-sm);
  font-size: var(--font-xs);
  color: var(--color-text-tertiary);
  text-align: center;
}

/* --------------------------------------------------------------------------
   In-Page Search Highlight
   -------------------------------------------------------------------------- */

mark.search-highlight {
  background: var(--color-search-highlight);
  color: inherit;
  border-radius: 2px;
  padding: 0 1px;
}
mark.search-highlight.active {
  outline: 2px solid #f69b1e;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */

.sitemd-form {
  position: relative;
  max-width: var(--content-width);
  margin: var(--space-xl) auto;
}

.form-field {
  margin-bottom: var(--space-lg);
}

.form-field[hidden] { display: none; }

.form-field label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  font-size: var(--font-sm);
  color: var(--color-text);
}

.form-required { color: var(--color-accent); }

.form-description {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  margin-top: 0;
  margin-bottom: var(--space-sm);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field input[type="number"],
.form-field input[type="date"],
.form-field select,
.form-field textarea {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--font-base);
  font-family: var(--font-sans);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 15%, transparent);
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #ef4444;
}

.form-error {
  font-size: var(--font-sm);
  color: #ef4444;
  margin-top: var(--space-xs);
}

.form-error[hidden] { display: none; }

/* Radio & checkbox groups */
.form-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  border: none;
  padding: 0;
  margin: 0;
}

.form-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: var(--font-base);
}

.form-option input {
  width: auto;
  margin: 0;
  accent-color: var(--color-accent);
}

/* Rating stars */
.form-rating {
  display: flex;
  gap: var(--space-xs);
  border: none;
  padding: 0;
  margin: 0;
}

.form-star {
  cursor: pointer;
  color: var(--color-border);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}

.form-star.active { color: var(--color-accent); }
.form-rating:hover .form-star { color: var(--color-border); }
.form-rating .form-star:hover,
.form-rating .form-star:has(~ .form-star:hover) { color: var(--color-accent); }

/* Name composite */
.form-name-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* Address composite */
.form-address {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-address input,
.form-address select {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--font-base);
  font-family: var(--font-sans);
  box-sizing: border-box;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-address input:focus,
.form-address select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 15%, transparent);
}

.form-address-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* Multi-page */
.form-page[hidden] { display: none; }

.form-page-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-lg);
}

.form-page-header h3 {
  margin: 0;
}

.form-progress {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
}

/* Navigation */
.form-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.form-submit[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Thank you */
.form-thankyou {
  text-align: center;
  padding: var(--space-3xl) 0;
}

.form-thankyou[hidden] { display: none; }

/* Display-only */
.form-heading { margin-bottom: var(--space-xs); }
.form-paragraph {
  color: var(--color-text-secondary);
  font-size: var(--font-sm);
  margin: 0 0 var(--space-md);
}

/* Responsive */
@media (max-width: 640px) {
  .form-address-row,
  .form-name-row {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   Auth Toggle (header account button)
   -------------------------------------------------------------------------- */

.auth-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.auth-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
}

.auth-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.auth-toggle.is-logged-in {
  color: var(--color-accent);
  border-color: var(--color-accent-subtle, var(--color-accent));
}

/* --------------------------------------------------------------------------
   Auth Forms
   -------------------------------------------------------------------------- */

.auth-form {
  margin: var(--space-lg) 0;
}

.auth-form h1 {
  font-size: var(--font-2xl);
  margin-bottom: var(--space-lg);
}

.auth-form label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  font-size: var(--font-sm);
  color: var(--color-text);
}

.auth-form input[type="email"],
.auth-form input[type="password"],
.auth-form input[type="text"] {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-base);
  font-family: inherit;
  margin-bottom: var(--space-md);
  box-sizing: border-box;
}

.auth-form input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: -1px;
  border-color: var(--color-accent);
}

.auth-error {
  color: #dc2626;
  font-size: var(--font-sm);
  margin-bottom: var(--space-md);
  display: none;
}

.auth-error.is-visible {
  display: block;
}

.auth-success {
  color: #16a34a;
  font-size: var(--font-sm);
  margin-bottom: var(--space-md);
  display: none;
}

.auth-success.is-visible {
  display: block;
}

.auth-submit {
  width: 100%;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: var(--font-base);
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.auth-submit:hover {
  opacity: 0.9;
}

.auth-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-link {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  text-align: center;
  display: block;
  margin-top: var(--space-md);
}

.auth-link a {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Auth Dashboard
   -------------------------------------------------------------------------- */

.auth-section {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.auth-section:last-child {
  border-bottom: none;
}

.auth-section h2 {
  font-size: var(--font-xl);
  margin-bottom: var(--space-md);
}

.auth-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  background: var(--color-bg-secondary);
}

.auth-card h3 {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-lg);
}

.auth-card-meta {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.auth-domain-list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0;
}

.auth-domain-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-sm);
}

.auth-domain-list li:last-child {
  border-bottom: none;
}

.auth-btn {
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text) !important;
  text-decoration: none;
  font-size: var(--font-sm);
  font-family: inherit;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.auth-btn:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-text-tertiary);
}

.auth-btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.auth-btn--accent {
  background: var(--color-accent);
  color: #fff !important;
  border-color: var(--color-accent);
}

.auth-btn--accent:hover {
  opacity: 0.9;
  background: var(--color-accent);
}

.auth-btn--danger {
  color: #dc2626 !important;
  border-color: #dc2626;
}

.auth-btn--danger:hover {
  background: #dc2626;
  color: #fff !important;
}

.domain-badge-label {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius);
  font-size: var(--font-xs);
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  border: 1px solid transparent;
}

.domain-badge--active {
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
  border-color: rgba(34, 197, 94, 0.25);
}

.domain-badge--inactive {
  background: rgba(245, 158, 11, 0.12);
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.25);
}

.domain-badge-tip {
  display: none;
  position: absolute;
  left: 50%;
  top: calc(100% + 6px);
  transform: translateX(-50%);
  background: var(--color-bg-alt, var(--color-bg));
  border: 1px solid var(--color-border);
  border-radius: var(--radius, 6px);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-xs);
  line-height: 1.5;
  white-space: nowrap;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,.1);
}

.domain-badge-tip--open {
  display: block;
}

.domain-badge-tip a {
  color: var(--color-accent);
}

.auth-key-list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0;
}

.auth-key-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-sm);
}

.auth-key-list li:last-child {
  border-bottom: none;
}

.auth-inline-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.auth-inline-form input {
  flex: 1;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-sm);
  font-family: inherit;
}

/* currentUser placeholder */
.current-user-value:empty {
  display: inline;
}

/* --------------------------------------------------------------------------
   Tooltips
   -------------------------------------------------------------------------- */

.tooltip {
  position: relative;
  display: inline;
}
.tooltip-trigger {
  border-bottom: 1px dotted var(--color-text-secondary);
  cursor: pointer;
}
.tooltip-content {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-bg-tertiary);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  font-size: var(--font-sm);
  line-height: var(--leading-normal);
  max-width: 300px;
  width: max-content;
  z-index: 100;
  pointer-events: none;
}
.tooltip:hover .tooltip-content,
.tooltip:focus .tooltip-content,
.tooltip:focus-within .tooltip-content {
  display: block;
}
.tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-border);
}

/* --------------------------------------------------------------------------
   Modals
   -------------------------------------------------------------------------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}
.modal-overlay[hidden] {
  display: none;
}
.modal-wrap {
  position: relative;
  width: 100%;
  max-width: 640px;
}
.modal-dialog {
  width: 100%;
  max-height: 80vh;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) * 2);
  box-shadow: var(--shadow-md), 0 16px 48px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-close {
  position: absolute;
  bottom: calc(100% + 8px);
  right: 0;
  background: none;
  border: none;
  outline: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 32px;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  transition: color var(--transition-fast);
}
.modal-close:hover {
  color: #fff;
}
.modal-close:focus-visible {
  outline: none;
}
.modal-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md) 0;
  gap: 0;
  overflow-x: auto;
  flex-shrink: 0;
}
.modal-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-secondary);
  font-size: var(--font-sm);
  font-family: var(--font-sans);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.modal-tab:hover {
  color: var(--color-text);
}
.modal-tab.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.modal-body {
  padding: var(--space-lg);
  overflow-y: auto;
  flex: 1;
}
.modal-body[hidden] {
  display: none;
}
/* Content styles inside modals inherit from .content */
.modal-body.content > *:first-child {
  margin-top: 0;
  padding-top: 0;
}
.modal-body.content > *:last-child {
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .modal-overlay {
    padding: var(--space-sm);
    align-items: flex-end;
  }
  .modal-wrap {
    max-width: 100%;
  }
  .modal-dialog {
    max-height: 90vh;
    border-radius: var(--radius) var(--radius) 0 0;
  }
  .modal-body {
    padding: var(--space-md);
  }
}