/* ============================================================
   Crucible Default Theme
   A clean, responsive documentation stylesheet.
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-bg: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-sidebar-bg: #f8fafc;
  --color-border: #e2e8f0;
  --color-code-bg: #f1f5f9;
  --color-link: #2563eb;
  --color-link-hover: #1d4ed8;
  --color-header-bg: #ffffff;
  --color-footer-bg: #f8fafc;
  --sidebar-width: 280px;
  --header-height: 56px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --color-primary: #60a5fa;
  --color-primary-dark: #93bbfd;
  --color-bg: #0f172a;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-light: #94a3b8;
  --color-sidebar-bg: #1e293b;
  --color-border: #334155;
  --color-code-bg: #1e293b;
  --color-link: #60a5fa;
  --color-link-hover: #93bbfd;
  --color-header-bg: #0f172a;
  --color-footer-bg: #1e293b;
}

/* Auto dark mode for users who haven't toggled */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #60a5fa;
    --color-primary-dark: #93bbfd;
    --color-bg: #0f172a;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-text-light: #94a3b8;
    --color-sidebar-bg: #1e293b;
    --color-border: #334155;
    --color-code-bg: #1e293b;
    --color-link: #60a5fa;
    --color-link-hover: #93bbfd;
    --color-header-bg: #0f172a;
    --color-footer-bg: #1e293b;
  }
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
}

.site-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1.25rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  color: var(--color-text);
}

/* --- Layout --- */
.layout {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - var(--header-height) - 60px);
}

/* --- Sidebar / Navigation --- */
.sidebar {
  position: sticky;
  top: var(--header-height);
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: 1.5rem 1rem;
  background: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-border);
}

.nav-tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-tree ul {
  list-style: none;
  margin: 0;
  padding-left: 1rem;
}

.nav-tree li {
  margin: 0;
}

.nav-tree li a {
  display: block;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  color: var(--color-text);
  font-size: 0.875rem;
  line-height: 1.5;
  transition: background 0.15s, color 0.15s;
}

.nav-tree li a:hover {
  background: var(--color-border);
  text-decoration: none;
}

.nav-tree li.active > a {
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
}

/* Collapsible nav sections */
.nav-section-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  width: 100%;
  padding: 0.5rem 0.75rem 0.2rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: inherit;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  text-align: left;
}

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

.nav-chevron {
  font-size: 0.625rem;
  transition: transform 0.2s ease;
  display: inline-block;
}

.nav-section.open > .nav-section-toggle .nav-chevron {
  transform: rotate(90deg);
}

.nav-section-children {
  display: none;
}

.nav-section.open > .nav-section-children {
  display: block;
}

/* --- Main Content --- */
main {
  flex: 1;
  min-width: 0;
  padding: 2rem 3rem;
}

article {
  max-width: 48rem;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  margin: 2rem 0 1rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2rem; margin-top: 0; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--color-border); padding-bottom: 0.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
  margin: 0 0 1rem;
}

/* --- Anchor Links --- */
.anchor {
  float: left;
  margin-left: -1.25em;
  padding-right: 0.25em;
  font-weight: 400;
  color: var(--color-text-muted);
  opacity: 0;
  text-decoration: none;
  transition: opacity 0.15s;
}

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

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

/* --- Code --- */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 0.15em 0.35em;
  border-radius: 4px;
}

pre {
  margin: 0 0 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--color-code-bg);
  border-radius: 6px;
  overflow-x: auto;
  line-height: 1.5;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.85rem;
}

/* --- Blockquote --- */
blockquote {
  margin: 0 0 1.5rem;
  padding: 0.75rem 1.25rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-sidebar-bg);
  color: var(--color-text-muted);
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* --- Lists --- */
ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.25rem;
}

/* --- Tables --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.5rem;
  font-size: 0.9rem;
}

th, td {
  padding: 0.6rem 0.85rem;
  text-align: left;
  border: 1px solid var(--color-border);
}

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

/* No alternating row colors — keep tables uniform */

/* --- Horizontal Rule --- */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

/* --- Admonitions --- */
.admonition {
  margin: 0 0 1.5rem;
  padding: 1rem 1.25rem;
  border-left: 4px solid;
  border-radius: 4px;
}

.admonition-title {
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.admonition-note {
  border-color: #3b82f6;
  background: #eff6ff;
}

.admonition-note .admonition-title {
  color: #1d4ed8;
}

.admonition-warning {
  border-color: #f59e0b;
  background: #fffbeb;
}

.admonition-warning .admonition-title {
  color: #b45309;
}

.admonition-tip {
  border-color: #10b981;
  background: #ecfdf5;
}

.admonition-tip .admonition-title {
  color: #047857;
}

.admonition-important {
  border-color: #8b5cf6;
  background: #f5f3ff;
}

.admonition-important .admonition-title {
  color: #6d28d9;
}

.admonition-caution {
  border-color: #ef4444;
  background: #fef2f2;
}

.admonition-caution .admonition-title {
  color: #b91c1c;
}

/* --- Admonition Dark Mode --- */
[data-theme="dark"] .admonition-note,
:root:not([data-theme="light"]) .admonition-note { border-color: #60a5fa; background: #1e3a5f; }
[data-theme="dark"] .admonition-note .admonition-title,
:root:not([data-theme="light"]) .admonition-note .admonition-title { color: #93bbfd; }

[data-theme="dark"] .admonition-warning,
:root:not([data-theme="light"]) .admonition-warning { border-color: #fbbf24; background: #422006; }
[data-theme="dark"] .admonition-warning .admonition-title,
:root:not([data-theme="light"]) .admonition-warning .admonition-title { color: #fcd34d; }

[data-theme="dark"] .admonition-tip,
:root:not([data-theme="light"]) .admonition-tip { border-color: #34d399; background: #064e3b; }
[data-theme="dark"] .admonition-tip .admonition-title,
:root:not([data-theme="light"]) .admonition-tip .admonition-title { color: #6ee7b7; }

[data-theme="dark"] .admonition-important,
:root:not([data-theme="light"]) .admonition-important { border-color: #a78bfa; background: #2e1065; }
[data-theme="dark"] .admonition-important .admonition-title,
:root:not([data-theme="light"]) .admonition-important .admonition-title { color: #c4b5fd; }

[data-theme="dark"] .admonition-caution,
:root:not([data-theme="light"]) .admonition-caution { border-color: #f87171; background: #450a0a; }
[data-theme="dark"] .admonition-caution .admonition-title,
:root:not([data-theme="light"]) .admonition-caution .admonition-title { color: #fca5a5; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .admonition-note { border-color: #60a5fa; background: #1e3a5f; }
  :root:not([data-theme="light"]) .admonition-note .admonition-title { color: #93bbfd; }
  :root:not([data-theme="light"]) .admonition-warning { border-color: #fbbf24; background: #422006; }
  :root:not([data-theme="light"]) .admonition-warning .admonition-title { color: #fcd34d; }
  :root:not([data-theme="light"]) .admonition-tip { border-color: #34d399; background: #064e3b; }
  :root:not([data-theme="light"]) .admonition-tip .admonition-title { color: #6ee7b7; }
  :root:not([data-theme="light"]) .admonition-important { border-color: #a78bfa; background: #2e1065; }
  :root:not([data-theme="light"]) .admonition-important .admonition-title { color: #c4b5fd; }
  :root:not([data-theme="light"]) .admonition-caution { border-color: #f87171; background: #450a0a; }
  :root:not([data-theme="light"]) .admonition-caution .admonition-title { color: #fca5a5; }
}

/* --- Mermaid --- */
.mermaid-wrapper {
  margin: 0 0 1.5rem;
  overflow-x: auto;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.site-footer p {
  margin: 0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 90;
    box-shadow: none;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 12px rgba(0, 0, 0, 0.1);
  }

  main {
    padding: 1.5rem 1rem;
  }
}

/* --- Print Styles --- */
@media print {
  .site-header,
  .sidebar,
  .nav-toggle,
  .site-footer,
  .anchor {
    display: none !important;
  }

  main {
    padding: 0;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
    color: #555;
  }

  pre {
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  table {
    page-break-inside: avoid;
  }

  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
  }
}

/* --- Search --- */
.search-container {
  position: relative;
  margin-bottom: 1rem;
  padding: 0 0.5rem;
}

#search-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.875rem;
  background: var(--color-bg);
  color: var(--color-text);
  box-sizing: border-box;
}

#search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

#search-input::placeholder {
  color: var(--color-text-light, #999);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0.5rem;
  right: 0.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  max-height: 400px;
  overflow-y: auto;
  z-index: 100;
}

.search-result {
  display: block;
  padding: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

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

.search-result:hover {
  background: var(--color-sidebar-bg, #f8f9fa);
}

.search-result-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-primary);
}

.search-result-desc {
  font-size: 0.75rem;
  color: var(--color-text-light, #666);
  margin-top: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-no-results {
  padding: 0.75rem;
  color: var(--color-text-light, #666);
  font-size: 0.875rem;
  text-align: center;
}

/* --- Theme Toggle --- */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  padding: 0.375rem 0.5rem;
  font-size: 1.125rem;
  line-height: 1;
  color: var(--color-text-muted);
  transition: color 0.2s, border-color 0.2s;
}

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