/* CalcMark Design Tokens
   All colors, fonts, and spacing as CSS custom properties.
   Override any variable to customize the site. */

:root {
  /* Brand */
  --color-primary: #7D56F4;
  --color-primary-hover: #6644d8;
  --color-accent: #874BFD;
  --color-tertiary: #f97316;

  /* Text */
  --color-text: #1a1a1a;
  --color-text-muted: #555555;
  --color-text-faint: #888888;

  /* Backgrounds */
  --color-bg: #ffffff;
  --color-bg-subtle: #f6f8fa;
  --color-bg-inset: #f0f2f5;

  /* Borders */
  --color-border: #d1d5db;
  --color-border-strong: #9ca3af;

  /* Code */
  --color-code-bg: #f3f4f6;
  --color-code-text: #1a1a1a;

  /* Status */
  --color-success: #1a7f37;
  --color-warning: #9a6700;
  --color-error: #cf222e;

  /* Layout */
  --nav-height: 56px;
  --sidebar-width: 240px;
  --content-max-width: 800px;
  --container-max-width: 1200px;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 12px;
  --line-height-base: 1.65;
  --line-height-code: 1.5;

  /* Spacing (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.10);

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
}

/* Dark mode */
[data-theme="dark"] {
  --color-primary: #a371f7;
  --color-primary-hover: #b78df9;
  --color-accent: #a371f7;
  --color-tertiary: #fb923c;

  --color-text: #e5e5e5;
  --color-text-muted: #8b949e;
  --color-text-faint: #6e7781;

  --color-bg: #0d1117;
  --color-bg-subtle: #161b22;
  --color-bg-inset: #1c2128;

  --color-border: #30363d;
  --color-border-strong: #6e7681;

  --color-code-bg: #161b22;
  --color-code-text: #e5e5e5;

  --color-success: #3fb950;
  --color-warning: #d29922;
  --color-error: #f85149;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
}
/* Reset and base typography */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

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

/* Headings */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 600;
  color: var(--color-text);
}

h1 {
  font-size: 2.25rem;
  margin-top: 0;
  margin-bottom: var(--space-6);
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

h3 {
  font-size: 1.25rem;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

h4 {
  font-size: 1.125rem;
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

/* Body text */
p {
  margin-bottom: var(--space-4);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: var(--color-primary-hover);
}

strong {
  font-weight: 600;
}

/* Inline code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}

/* Code blocks */
pre {
  background: var(--color-code-bg);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  overflow-x: auto;
  margin-bottom: var(--space-6);
  line-height: var(--line-height-code);
}

pre code {
  background: none;
  padding: 0;
  font-size: var(--font-size-sm);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
}

th, td {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  text-align: left;
}

th {
  background: var(--color-bg-subtle);
  font-weight: 600;
}

/* Block quote */
blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-4);
  color: var(--color-text-muted);
  margin: var(--space-4) 0;
}

/* Lists */
ul, ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

li {
  margin-bottom: var(--space-1);
}

li > ul,
li > ol {
  margin-top: var(--space-1);
  margin-bottom: 0;
}

/* Horizontal rule */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}
/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  background-color: color-mix(in srgb, var(--color-bg) 85%, transparent);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-6);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.nav-logo-icon {
  height: 1em;
  width: auto;
  vertical-align: -0.1em;
  margin-right: 0.35em;
  /* Inherit text color via CSS filter — currentColor doesn't work on <img> */
  filter: brightness(0);
}

[data-theme="dark"] .nav-logo-icon {
  filter: brightness(0) invert(1);
}

.nav-logo:hover .nav-logo-icon {
  /* Match --color-primary #7D56F4 via filter */
  filter: brightness(0) saturate(100%) invert(36%) sepia(63%) saturate(5000%) hue-rotate(245deg) brightness(97%);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.nav-link {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text);
  text-decoration: none;
}

.nav-link--active {
  color: var(--color-primary);
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  font-size: 1rem;
  line-height: 1;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

/* Show sun in dark mode, moon in light mode */
[data-theme="dark"] .theme-icon--moon { display: none; }
[data-theme="dark"] .theme-icon--sun { display: inline; }
:root .theme-icon--sun { display: none; }
:root .theme-icon--moon { display: inline; }

/* Docs layout */
.docs-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: var(--space-8);
  min-height: calc(100vh - var(--nav-height));
}

.docs-sidebar {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  padding: var(--space-6) 0;
  border-right: 1px solid var(--color-border);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-link {
  display: block;
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.sidebar-link:hover {
  color: var(--color-text);
  background: var(--color-bg-subtle);
  text-decoration: none;
}

.sidebar-link--active {
  color: var(--color-primary);
  background: var(--color-bg-inset);
}

/* Docs content area */
.docs-content {
  padding: var(--space-8) 0;
  max-width: var(--content-max-width);
}

/* Hero section */
.hero {
  padding: var(--space-16) 0;
  text-align: center;
}

/* Hero lockup: Larky + cm logo */
.hero-lockup {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.hero-lark {
  height: 96px;
  width: auto;
}

.hero-cm {
  height: 48px;
  width: auto;
  margin-bottom: 2px;
}

.hero-headline {
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-8);
  line-height: 1.6;
}

.hero-install {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.install-cmd {
  display: inline-block;
  background: var(--color-bg-inset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin: 0;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-media {
  max-width: 720px;
  margin: 0 auto;
}

.hero-gif {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.feature-gif {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-top: var(--space-3);
}

.feature-snippet {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  line-height: 1.6;
  overflow-x: auto;
}

.feature-snippet code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.feature-snippet .r {
  color: var(--color-primary);
}

.feature-snippet .c {
  color: var(--color-text-faint);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
}

.btn-secondary {
  background: var(--color-bg-subtle);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

/* Features grid */
.features {
  padding: var(--space-12) 0;
}

.features h2 {
  text-align: center;
  border-bottom: none;
  margin-bottom: var(--space-8);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-subtle);
}

.feature-card h3 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: var(--space-2);
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* Page cards (list pages) */
.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-card {
  display: block;
  padding: var(--space-4) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.page-card h3 {
  font-size: 1rem;
  margin: 0 0 var(--space-1);
  color: var(--color-primary);
}

.page-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

/* Callout boxes */
.callout {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin: var(--space-6) 0;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout-note {
  background: var(--color-bg-subtle);
  border-color: var(--color-primary);
}

.callout-warning {
  background: color-mix(in srgb, var(--color-warning) 8%, var(--color-bg));
  border-color: var(--color-warning);
}

.callout-tip {
  background: color-mix(in srgb, var(--color-success) 8%, var(--color-bg));
  border-color: var(--color-success);
}

/* Heading anchors */
.heading-anchor {
  opacity: 0;
  margin-left: 0.5rem;
  font-size: 0.8em;
  font-weight: 400;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

h1:hover .heading-anchor,
h2:hover .heading-anchor,
h3:hover .heading-anchor,
h4:hover .heading-anchor,
h5:hover .heading-anchor,
h6:hover .heading-anchor {
  opacity: 1;
}

.heading-anchor:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* Page meta (last updated) */
.page-meta {
  margin-top: var(--space-12);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-faint);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  margin-top: var(--space-12);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-faint);
}

.footer-inner a {
  color: var(--color-text-muted);
}

.footer-lark {
  height: 1.1em;
  width: auto;
  vertical-align: -0.15em;
  margin-right: 0.3em;
  filter: brightness(0);
  opacity: 0.4;
}

[data-theme="dark"] .footer-lark {
  filter: brightness(0) invert(1);
}

/* CalcMark inline results (render-codeblock-calcmark) */
.cm-codeblock {
  margin: var(--space-4) 0;
}

.cm-results {
  background: color-mix(in srgb, var(--color-primary) 5%, var(--color-bg));
  border: 1px solid color-mix(in srgb, var(--color-primary) 15%, var(--color-border));
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4) var(--space-1);
  margin-top: var(--space-2);
}

.cm-results-header {
  font-size: var(--font-size-xs, 0.75rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: color-mix(in srgb, var(--color-primary) 50%, var(--color-text-faint));
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.cm-results-header::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background: currentColor;
  mask: var(--img-lark) no-repeat center / contain;
  -webkit-mask: var(--img-lark) no-repeat center / contain;
}

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

.cm-results-table tr + tr {
  border-top: none;
}

.cm-results-table td {
  padding: var(--space-1) 0;
  border: none;
}

.cm-result-source {
  color: var(--color-text-muted);
  white-space: nowrap;
}

.cm-result-arrow {
  color: var(--color-text-faint);
  padding: 0 var(--space-2);
  text-align: center;
}

.cm-result-value {
  color: var(--color-primary);
  font-weight: 500;
  text-align: right;
}

.cm-results.cm-error {
  border-color: var(--color-warning);
}

.cm-results.cm-error .cm-results-header {
  color: var(--color-warning);
}

/* Repo file links with copy button */
.repo-file {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.repo-file-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 2px 4px;
  color: var(--color-primary);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  vertical-align: middle;
}

.repo-file-copy:hover {
  color: var(--color-tertiary);
  border-color: var(--color-tertiary);
}

.repo-file-copy.copied {
  color: var(--color-success);
  border-color: var(--color-success);
}

.repo-file-lark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background: currentColor;
  -webkit-mask: var(--img-lark) no-repeat center / contain;
  mask: var(--img-lark) no-repeat center / contain;
}

/* Tiny lark on top-level page headings */
.page-lark {
  height: 0.6em;
  width: auto;
  vertical-align: baseline;
  margin-left: 0.4em;
  filter: brightness(0);
  opacity: 0.25;
}

[data-theme="dark"] .page-lark {
  filter: brightness(0) invert(1);
}

/* Larky page */
.larky-hero {
  text-align: center;
  margin: var(--space-8) 0;
}

.larky-hero-img {
  height: 160px;
  width: auto;
}

.larky-gallery {
  display: flex;
  gap: var(--space-6);
  justify-content: center;
  flex-wrap: wrap;
  margin: var(--space-8) 0;
}

.larky-gallery-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-bg-subtle);
}

.larky-gallery-item img {
  height: 80px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.larky-gallery-item img.larky-themed {
  filter: brightness(0);
}

[data-theme="dark"] .larky-gallery-item img.larky-themed {
  filter: brightness(0) invert(1);
}

.larky-gallery-item span {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Full document link */
.full-doc-link {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.full-doc-link a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.full-doc-link a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    display: none;
  }

  .hero-headline {
    font-size: 2rem;
  }

  .hero {
    padding: var(--space-8) 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: var(--space-3);
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-2);
  }
}
/* Layout utilities */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Accessibility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Text */
.text-muted {
  color: var(--color-text-muted);
}

.text-mono {
  font-family: var(--font-mono);
}