/* ================================================================
   LLMBase — Night-Comfort Theme
   Muted blue-grey palette, true dark mode, soft accents
   ================================================================ */

/* ── Color System ─────────────────────────────────────────────── */
:root {
  --llm-accent: #6FA3B8;
  --llm-accent-soft: #8FA9C4;
  --llm-heading: #C8D4E4;
  --llm-glass: rgba(255, 255, 255, 0.04);
  --llm-glass-border: rgba(255, 255, 255, 0.06);
  --llm-glass-hover: rgba(255, 255, 255, 0.07);
  --llm-success: #5eab8b;
  --llm-warning: #c4975a;
  --llm-danger: #c66;
  --llm-info: #6a9fc7;
  --llm-radius: 10px;
  --llm-radius-lg: 14px;
}

/* ── Dark Scheme ──────────────────────────────────────────────── */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0B0E12;
  --md-default-fg-color: #E4E8EE;
  --md-default-fg-color--light: #9AA3B2;
  --md-default-fg-color--lighter: #5C6878;
  --md-default-fg-color--lightest: #1E2530;
  --md-code-bg-color: #141A22;
  --md-code-fg-color: #D0D8E4;
  --md-code-hl-color: rgba(111, 163, 184, 0.1);
  --md-typeset-a-color: #7EB8D4;
  --md-footer-bg-color: #080A0E;
  --md-footer-bg-color--dark: #060810;
  --md-accent-fg-color: #6FA3B8;
}

/* ── Light Scheme ─────────────────────────────────────────────── */
[data-md-color-scheme="default"] {
  --md-default-bg-color: #F6F7F9;
  --md-code-bg-color: #EEF0F4;
  --md-typeset-a-color: #2A6F88;
  --md-accent-fg-color: #3D7A92;
}

/* ── Header ───────────────────────────────────────────────────── */
[data-md-color-scheme="slate"] .md-header {
  background: rgba(11, 14, 18, 0.9) !important;
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid rgba(111, 163, 184, 0.1);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

[data-md-color-scheme="default"] .md-header {
  background: rgba(246, 247, 249, 0.9) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  color: #1B1F26;
}

[data-md-color-scheme="default"] .md-header .md-header__title {
  color: #1B1F26;
}

[data-md-color-scheme="default"] .md-header .md-header__topic {
  color: #1B1F26;
}

[data-md-color-scheme="default"] .md-header .md-header__button {
  color: #1B1F26;
}

[data-md-color-scheme="default"] .md-header .md-search__icon,
[data-md-color-scheme="default"] .md-header .md-icon {
  color: #2A3240;
}

[data-md-color-scheme="default"] .md-tabs {
  background: rgba(246, 247, 249, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

[data-md-color-scheme="default"] .md-tabs__link {
  color: #4A5568;
}

[data-md-color-scheme="default"] .md-tabs__link--active,
[data-md-color-scheme="default"] .md-tabs__link:hover {
  color: #1B1F26;
}

.md-header__title {
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ── Sidebar ──────────────────────────────────────────────────── */
[data-md-color-scheme="slate"] .md-sidebar {
  background: rgba(11, 14, 18, 0.5);
  backdrop-filter: blur(10px);
  border-right: 1px solid rgba(255, 255, 255, 0.04);
}

.md-nav__link {
  font-size: 0.78rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  padding: 0.35rem 0.6rem;
  margin: 1px 0;
}

.md-nav__link:hover {
  color: var(--md-accent-fg-color) !important;
  transform: translateX(2px);
}

[data-md-color-scheme="slate"] .md-nav__link:hover {
  background: var(--llm-glass-hover);
}

[data-md-color-scheme="default"] .md-nav__link:hover {
  background: rgba(61, 122, 146, 0.06);
}

.md-nav__link--active {
  font-weight: 600;
  color: var(--md-accent-fg-color) !important;
  border-left: 2px solid var(--md-accent-fg-color);
}

[data-md-color-scheme="slate"] .md-nav__link--active {
  background: rgba(111, 163, 184, 0.08);
}

[data-md-color-scheme="default"] .md-nav__link--active {
  background: rgba(61, 122, 146, 0.06);
}

.md-nav__item--nested > .md-nav__link {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--md-default-fg-color--light);
  padding-top: 0.8rem;
}

/* ── Typography ───────────────────────────────────────────────── */
.md-typeset {
  font-size: 0.85rem;
  line-height: 1.85;
  letter-spacing: 0.005em;
}

.md-typeset h1 {
  font-weight: 800;
  font-size: 2.1em;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 0.6em;
}

[data-md-color-scheme="slate"] .md-typeset h1 {
  color: var(--llm-heading);
}

[data-md-color-scheme="default"] .md-typeset h1 {
  color: #1B1F26;
}

.md-typeset h2 {
  font-weight: 700;
  font-size: 1.45em;
  margin-top: 2.8em;
  margin-bottom: 0.8em;
  padding-bottom: 0.5em;
  letter-spacing: -0.02em;
  position: relative;
}

[data-md-color-scheme="slate"] .md-typeset h2 {
  color: #B8C8DA;
}

[data-md-color-scheme="default"] .md-typeset h2 {
  color: #2A3240;
}

[data-md-color-scheme="slate"] .md-typeset h2 {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.md-typeset h2::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--md-accent-fg-color);
  border-radius: 2px;
  opacity: 0.7;
}

.md-typeset h3 {
  font-weight: 600;
  font-size: 1.12em;
  margin-top: 2em;
  letter-spacing: -0.01em;
}

[data-md-color-scheme="slate"] .md-typeset h3 {
  color: var(--md-default-fg-color--light);
}

[data-md-color-scheme="default"] .md-typeset h3 {
  color: #2A6F88;
}

.md-typeset h4 {
  font-weight: 600;
  font-size: 1em;
  margin-top: 1.5em;
  color: var(--md-default-fg-color--light);
}

/* ── Content Width ────────────────────────────────────────────── */
.md-grid {
  max-width: 1400px;
}

/* ── Tables ───────────────────────────────────────────────────── */
.md-typeset table:not([class]) {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  font-size: 0.78rem;
  display: table;
  border-radius: var(--llm-radius);
  overflow: hidden;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) {
  background: var(--llm-glass);
  border: 1px solid var(--llm-glass-border);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
}

.md-typeset table:not([class]) th {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-align: left;
  padding: 0.9rem 1.1rem;
  position: sticky;
  top: 0;
  z-index: 1;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  background: rgba(111, 163, 184, 0.06);
  color: var(--llm-accent-soft);
  border-bottom: 1px solid rgba(111, 163, 184, 0.1);
}

.md-typeset table:not([class]) td {
  padding: 0.8rem 1.1rem;
  line-height: 1.65;
  transition: background 0.15s ease;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.md-typeset table:not([class]) tr:last-child td {
  border-bottom: none;
}

.md-typeset table:not([class]) tbody tr:hover td {
  background: rgba(111, 163, 184, 0.04);
}

/* ── Code Blocks ──────────────────────────────────────────────── */
.md-typeset pre {
  border-radius: var(--llm-radius);
  overflow: hidden;
}

[data-md-color-scheme="slate"] .md-typeset pre {
  background: #141A22 !important;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}

.md-typeset code {
  border-radius: 5px;
  font-size: 0.85em;
}

[data-md-color-scheme="slate"] .md-typeset :not(pre) > code {
  background: rgba(111, 163, 184, 0.08);
  color: #A3D0E8;
  border: 1px solid rgba(111, 163, 184, 0.1);
  padding: 0.12em 0.4em;
}

/* ── Math blocks ──────────────────────────────────────────────── */
.md-typeset .MathJax {
  font-size: 1.05em;
}

.md-typeset mjx-container[display="true"] {
  margin: 1.2em 0;
  padding: 1em 1.4em;
  border-radius: 0 var(--llm-radius) var(--llm-radius) 0;
  overflow-x: auto;
}

[data-md-color-scheme="slate"] .md-typeset mjx-container[display="true"] {
  background: rgba(20, 26, 34, 0.6);
  border-left: 3px solid var(--llm-accent);
}

/* ── Admonitions ──────────────────────────────────────────────── */
.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--llm-radius);
  border: none;
  font-size: 0.84rem;
  overflow: hidden;
}

[data-md-color-scheme="slate"] .md-typeset .admonition,
[data-md-color-scheme="slate"] .md-typeset details {
  background: var(--llm-glass);
  border: 1px solid var(--llm-glass-border);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Interview admonition */
:root {
  --md-admonition-icon--interview: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 2H4c-1.1 0-2 .9-2 2v18l4-4h14c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2m0 14H6l-2 2V4h16"/></svg>');
}
.md-typeset .admonition.interview,
.md-typeset details.interview {
  border-left: 3px solid var(--llm-success);
}
.md-typeset .interview > .admonition-title,
.md-typeset .interview > summary {
  background-color: rgba(94, 171, 139, 0.08);
}
.md-typeset .interview > .admonition-title::before,
.md-typeset .interview > summary::before {
  background-color: var(--llm-success);
  -webkit-mask-image: var(--md-admonition-icon--interview);
  mask-image: var(--md-admonition-icon--interview);
}

/* Math intuition admonition */
:root {
  --md-admonition-icon--math-intuition: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2m1 17h-2v-2h2zm2.07-7.75-.9.92C13.45 12.9 13 13.5 13 15h-2v-.5c0-1.1.45-2.1 1.17-2.83l1.24-1.26c.37-.36.59-.86.59-1.41 0-1.1-.9-2-2-2s-2 .9-2 2H8c0-2.21 1.79-4 4-4s4 1.79 4 4c0 .88-.36 1.68-.93 2.25"/></svg>');
}
.md-typeset .admonition.math-intuition,
.md-typeset details.math-intuition {
  border-left: 3px solid var(--llm-info);
}
.md-typeset .math-intuition > .admonition-title,
.md-typeset .math-intuition > summary {
  background-color: rgba(106, 159, 199, 0.08);
}
.md-typeset .math-intuition > .admonition-title::before,
.md-typeset .math-intuition > summary::before {
  background-color: var(--llm-info);
  -webkit-mask-image: var(--md-admonition-icon--math-intuition);
  mask-image: var(--md-admonition-icon--math-intuition);
}

/* Deep dive admonition */
:root {
  --md-admonition-icon--deep-dive: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 3c-4.97 0-9 4.03-9 9s4.03 9 9 9 9-4.03 9-9c0-.46-.04-.92-.1-1.36a5.389 5.389 0 0 1-4.4 2.26 5.403 5.403 0 0 1-3.14-9.8c-.6-.13-1.24-.2-1.86-.2z"/></svg>');
}
.md-typeset .admonition.deep-dive,
.md-typeset details.deep-dive {
  border-left: 3px solid #7986A8;
}
.md-typeset .deep-dive > .admonition-title,
.md-typeset .deep-dive > summary {
  background-color: rgba(121, 134, 168, 0.08);
}
.md-typeset .deep-dive > .admonition-title::before,
.md-typeset .deep-dive > summary::before {
  background-color: #7986A8;
  -webkit-mask-image: var(--md-admonition-icon--deep-dive);
  mask-image: var(--md-admonition-icon--deep-dive);
}

/* Key phrases admonition */
:root {
  --md-admonition-icon--key-phrases: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12.65 10C11.83 7.67 9.61 6 7 6c-3.31 0-6 2.69-6 6s2.69 6 6 6c2.61 0 4.83-1.67 5.65-4H17v4h4v-4h2v-4zM7 14c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2"/></svg>');
}
.md-typeset .admonition.key-phrases,
.md-typeset details.key-phrases {
  border-left: 3px solid var(--llm-warning);
}
.md-typeset .key-phrases > .admonition-title,
.md-typeset .key-phrases > summary {
  background-color: rgba(196, 151, 90, 0.08);
}
.md-typeset .key-phrases > .admonition-title::before,
.md-typeset .key-phrases > summary::before {
  background-color: var(--llm-warning);
  -webkit-mask-image: var(--md-admonition-icon--key-phrases);
  mask-image: var(--md-admonition-icon--key-phrases);
}

/* ── Mermaid Diagrams ─────────────────────────────────────────── */
.mermaid {
  max-width: 100%;
  margin: 2rem 0;
  padding: 2rem;
  border-radius: var(--llm-radius-lg);
  overflow-x: auto;
}

[data-md-color-scheme="slate"] .mermaid {
  background: rgba(18, 23, 30, 0.7) !important;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

/* ── Blockquotes ──────────────────────────────────────────────── */
[data-md-color-scheme="slate"] .md-typeset blockquote {
  border-left: 3px solid var(--llm-accent);
  background: rgba(111, 163, 184, 0.04);
  border-radius: 0 var(--llm-radius) var(--llm-radius) 0;
  padding: 1rem 1.25rem;
}

/* ── Horizontal Rules ─────────────────────────────────────────── */
.md-typeset hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(111, 163, 184, 0.15), rgba(143, 169, 196, 0.2), rgba(111, 163, 184, 0.15), transparent);
  margin: 3rem 0;
  opacity: 0.6;
}

/* ── Links ────────────────────────────────────────────────────── */
.md-typeset a {
  transition: color 0.2s ease, border-bottom-color 0.2s ease;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.md-typeset a:hover {
  color: #A3D0E8 !important;
  border-bottom-color: rgba(163, 208, 232, 0.3);
}

[data-md-color-scheme="default"] .md-typeset a:hover {
  color: #1E6580 !important;
  border-bottom-color: rgba(30, 101, 128, 0.3);
}

/* ── Search ───────────────────────────────────────────────────── */
[data-md-color-scheme="slate"] .md-search__form {
  background: rgba(20, 26, 34, 0.8);
  border: 1px solid rgba(111, 163, 184, 0.1);
  border-radius: var(--llm-radius);
}

/* ── Footer ───────────────────────────────────────────────────── */
.md-footer {
  margin-top: 4em;
}

[data-md-color-scheme="slate"] .md-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: rgba(8, 10, 14, 0.9) !important;
}

.md-footer__title {
  font-weight: 600;
}

.md-footer__direction {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.6;
}

/* ── Scrollbar ────────────────────────────────────────────────── */
[data-md-color-scheme="slate"] ::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-track {
  background: transparent;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-thumb {
  background: rgba(111, 163, 184, 0.2);
  border-radius: 3px;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-thumb:hover {
  background: rgba(111, 163, 184, 0.35);
}

/* ── Page Animation ───────────────────────────────────────────── */
.md-content {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ── Progress Bar ─────────────────────────────────────────────── */
.md-progress {
  background: linear-gradient(90deg, #5E7A8C, #6FA3B8) !important;
}

/* ── Light mode — Tables ─────────────────────────────────────── */
[data-md-color-scheme="default"] .md-typeset table:not([class]) {
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

[data-md-color-scheme="default"] .md-typeset table:not([class]) th {
  background: rgba(61, 122, 146, 0.05);
  color: #2A6F88;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

[data-md-color-scheme="default"] .md-typeset table:not([class]) td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

[data-md-color-scheme="default"] .md-typeset table:not([class]) tbody tr:hover td {
  background: rgba(61, 122, 146, 0.03);
}

/* ── Light mode — Code ───────────────────────────────────────── */
[data-md-color-scheme="default"] .md-typeset pre {
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

[data-md-color-scheme="default"] .md-typeset :not(pre) > code {
  background: rgba(61, 122, 146, 0.06);
  color: #2A6F88;
  border: 1px solid rgba(61, 122, 146, 0.1);
}

/* ── Light mode — Sidebar ────────────────────────────────────── */
[data-md-color-scheme="default"] .md-sidebar {
  border-right: 1px solid rgba(0, 0, 0, 0.04);
}

[data-md-color-scheme="default"] .md-nav__link--active {
  background: rgba(61, 122, 146, 0.06);
  border-left: 2px solid var(--md-accent-fg-color);
}

/* ── Light mode — Admonitions ────────────────────────────────── */
[data-md-color-scheme="default"] .md-typeset .admonition,
[data-md-color-scheme="default"] .md-typeset details {
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

/* ── Light mode — Search ─────────────────────────────────────── */
[data-md-color-scheme="default"] .md-search__form {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--llm-radius);
}

/* ── Light mode — Footer ─────────────────────────────────────── */
[data-md-color-scheme="default"] .md-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

/* ── Light mode — h2 underline ───────────────────────────────── */
[data-md-color-scheme="default"] .md-typeset h2 {
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

[data-md-color-scheme="default"] .md-typeset h2::after {
  background: var(--md-accent-fg-color);
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .md-typeset h1 {
    font-size: 1.7em;
  }

  .md-typeset table:not([class]) {
    font-size: 0.72rem;
  }
}

/* ── Print ────────────────────────────────────────────────────── */
@media print {
  .md-typeset h1 {
    color: #1B1F26;
  }

  .md-typeset h2::after {
    display: none;
  }
}