/* ──────────────────────────────────────────────
   Blog — Editorial companion to godiao.github.io
   Design direction: literary journal with warm glow
   ────────────────────────────────────────────── */

/* ── Tokens ── */
:root {
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Consolas", monospace;
  --accent: #b8956a;
  --accent-dim: rgba(184, 149, 106, 0.05);
  --accent-mid: rgba(184, 149, 106, 0.10);
  --accent-soft: rgba(184, 149, 106, 0.18);
  --transition: 0.3s ease;
}

/* ── Dark palette (default) ── */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0f0f0d;
  --md-default-fg-color: #c8c3b8;
  --md-default-fg-color--light: #837d72;
  --md-default-fg-color--lighter: #5c584f;
  --md-primary-fg-color: #c8c3b8;
  --md-accent-fg-color: #b8956a;
  --md-typeset-color: #c8c3b8;
  --md-code-bg-color: #161614;
  --md-code-fg-color: #c8c3b8;
  --md-hue: 45;
}

/* ── Light palette ── */
[data-md-color-scheme="default"] {
  --md-default-bg-color: #f8f6f1;
  --md-default-fg-color: #1a1916;
  --md-default-fg-color--light: #6b665c;
  --md-default-fg-color--lighter: #9e9889;
  --md-primary-fg-color: #1a1916;
  --md-accent-fg-color: #a07d52;
  --md-typeset-color: #33302a;
  --md-code-bg-color: #edeae3;
  --md-code-fg-color: #1a1916;
}

/* ── Noise texture ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.035;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  background-size: 300px 300px;
}

/* ── Warm ambient glow ── */
body {
  background:
    radial-gradient(ellipse 900px 600px at 50% -200px, rgba(184,149,106,0.07) 0%, transparent 70%),
    var(--md-default-bg-color) !important;
}

[data-md-color-scheme="default"] body {
  background:
    radial-gradient(ellipse 900px 600px at 50% -200px, rgba(184,149,106,0.06) 0%, transparent 70%),
    var(--md-default-bg-color) !important;
}

::selection {
  background: var(--accent);
  color: #fff;
}

/* ────────────────────────────
   HEADER — ghost bar
   ──────────────────────────── */
.md-header {
  background: rgba(15, 15, 13, 0.85) !important;
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: none !important;
  border-bottom: 1px solid rgba(255,255,255,0.03) !important;
}

[data-md-color-scheme="default"] .md-header {
  background: rgba(248, 246, 241, 0.88) !important;
  border-bottom-color: rgba(0,0,0,0.06) !important;
}

.md-header__title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.md-tabs {
  background: transparent !important;
  border-bottom: none !important;
}

/* ────────────────────────────
   BACK-LINK (injected by main.html)
   ──────────────────────────── */
.blog-back {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0 2rem;
  font-family: var(--sans);
  font-size: 0.75rem;
  color: var(--md-default-fg-color--lighter);
}

.blog-back a {
  color: var(--md-default-fg-color--lighter);
  text-decoration: none;
  transition: color var(--transition);
}

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

.back-link {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: -0.01em;
}

.back-links {
  display: flex;
  gap: 1rem;
}

/* ────────────────────────────
   HIDE MKDOCS PERMALINKS
   ──────────────────────────── */
.md-typeset .headerlink {
  display: none !important;
}

/* ────────────────────────────
   TYPOGRAPHY — editorial hierarchy
   ──────────────────────────── */
.md-typeset {
  line-height: 1.85;
  font-size: 0.86rem;
}

.md-typeset h1 {
  font-family: var(--serif);
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--md-default-fg-color);
  margin-bottom: 0.15rem;
  margin-top: 0;
  font-size: 2.2rem;
  line-height: 1.15;
}

.md-typeset h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  margin-top: 3rem;
  margin-bottom: 0.8rem;
  color: var(--md-default-fg-color);
  border: none;
  padding: 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

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

.md-typeset h3 {
  font-weight: 500;
  font-size: 0.88rem;
  margin-top: 1.8rem;
  margin-bottom: 0.5rem;
  color: var(--md-default-fg-color);
  letter-spacing: -0.005em;
}

.md-typeset h4 {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--md-default-fg-color--lighter);
  margin-top: 2rem;
  margin-bottom: 0.4rem;
}

/* ── Subtitle ── */
.subtitle {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--md-default-fg-color--lighter);
  margin-top: 0.4rem;
  margin-bottom: 3rem;
  font-weight: 400;
  letter-spacing: 0.005em;
  line-height: 1.7;
}

/* ── Body text ── */
.md-typeset p {
  line-height: 1.85;
  color: var(--md-default-fg-color--light);
  margin-bottom: 1.3rem;
}

.md-typeset strong {
  font-weight: 500;
  color: var(--md-default-fg-color);
}

/* ────────────────────────────
   LINKS — accent with restraint
   ──────────────────────────── */
.md-typeset a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

.md-typeset a:hover {
  color: var(--md-default-fg-color);
}

.md-nav__link {
  color: var(--md-default-fg-color--light);
  transition: color var(--transition);
  font-size: 0.84rem;
}

.md-nav__link:hover {
  color: var(--accent);
}

.md-nav__link--active {
  color: var(--accent) !important;
  font-weight: 500;
}

/* ────────────────────────────
   LISTS — architectural dots
   ──────────────────────────── */
.md-typeset ul {
  list-style: none;
  padding-left: 0;
  margin: 0.8rem 0;
}

.md-typeset ol {
  margin: 0.8rem 0;
  padding-left: 1.5rem;
}

.md-typeset li {
  padding: 0.25rem 0 0.25rem 1rem;
  background: none;
  border-radius: 0;
  color: var(--md-default-fg-color--light);
  position: relative;
}

.md-typeset li:hover {
  transform: none;
  background: none;
}

.md-typeset ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.3;
}

/* ────────────────────────────
   CODE — muted blocks
   ──────────────────────────── */
.md-typeset code {
  background: var(--md-code-bg-color);
  color: var(--md-default-fg-color);
  padding: 0.12em 0.35em;
  border-radius: 3px;
  font-size: 0.84em;
  font-family: var(--mono);
}

.md-typeset pre {
  background: var(--md-code-bg-color);
  border-radius: 4px;
  box-shadow: none;
  border: 1px solid rgba(255,255,255,0.03);
  padding: 1.1em 1.3em !important;
  margin: 1.5rem 0;
}

.md-typeset pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.8em;
}

/* ────────────────────────────
   BLOCKQUOTES — accent left bar
   ──────────────────────────── */
.md-typeset blockquote {
  border-left: 2px solid var(--accent);
  background: var(--accent-dim);
  padding: 0.75rem 1rem;
  border-radius: 0 3px 3px 0;
  margin: 1.5rem 0;
  color: var(--md-default-fg-color--light);
}

/* ────────────────────────────
   TABLES — mono headers
   ──────────────────────────── */
.md-typeset table {
  border-collapse: collapse;
  margin: 1.5rem 0;
  width: 100%;
  font-size: 0.84em;
}

.md-typeset table th {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--md-default-fg-color--lighter);
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-align: left;
}

.md-typeset table td {
  padding: 0.45rem 0.7rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  color: var(--md-default-fg-color--light);
}

.md-typeset table tbody tr:hover {
  background: var(--accent-dim);
}

/* ────────────────────────────
   HR — whisper-thin dividers
   ──────────────────────────── */
.md-typeset hr {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.04);
  margin: 3rem 0;
}

[data-md-color-scheme="default"] .md-typeset hr {
  border-top-color: rgba(0,0,0,0.06);
}

/* ────────────────────────────
   CONTENT WIDTH — narrow, readable
   ──────────────────────────── */
.md-content__inner {
  max-width: 720px;
}

/* ────────────────────────────
   SIDEBAR — ghost
   ──────────────────────────── */
.md-sidebar {
  background: transparent;
}

.md-sidebar__scrollwrap {
  scrollbar-width: thin;
  scrollbar-color: rgba(184,149,106,0.12) transparent;
}

.md-nav--secondary .md-nav__link {
  font-size: 0.8em;
  opacity: 0.5;
}

.md-nav--secondary .md-nav__link--active {
  opacity: 1;
  color: var(--accent);
}

/* ────────────────────────────
   SEARCH
   ──────────────────────────── */
.md-search__inner {
  background: rgba(255,255,255,0.03) !important;
  border-radius: 8px;
}

[data-md-color-scheme="default"] .md-search__inner {
  background: rgba(0,0,0,0.03) !important;
}

/* ────────────────────────────
   FOOTER — minimal
   ──────────────────────────── */
.md-main {
  background: transparent;
}

.md-footer {
  background: transparent !important;
  border-top: 1px solid rgba(255,255,255,0.03);
  color: var(--md-default-fg-color--lighter);
}

[data-md-color-scheme="default"] .md-footer {
  border-top-color: rgba(0,0,0,0.06);
}

.md-footer-meta {
  background: transparent !important;
}

/* ────────────────────────────
   IMAGES — soft shadow, no hover gimmick
   ──────────────────────────── */
.md-content__inner img {
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

/* ────────────────────────────
   ADMONITIONS
   ──────────────────────────── */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 4px;
  border: none;
  box-shadow: none;
  background: var(--accent-dim);
}

.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 500;
  color: var(--accent);
}

/* ────────────────────────────
   SCROLLBAR
   ──────────────────────────── */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(184,149,106,0.15);
  border-radius: 2px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

/* ────────────────────────────
   TRANSITIONS — intentional only
   ──────────────────────────── */
* {
  transition: none;
}

.md-typeset a,
.md-nav__link,
.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  transition: color var(--transition);
}

/* ────────────────────────────
   GRID CARDS
   ──────────────────────────── */
.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 4px;
  background: transparent;
  padding: 1rem 1.2rem;
}

.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid.cards > ol > li:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: none;
}

.md-typeset .grid.cards > ul > li::before,
.md-typeset .grid.cards > ol > li::before {
  display: none;
}

[data-md-color-scheme="default"] .md-typeset .grid.cards > ul > li,
[data-md-color-scheme="default"] .md-typeset .grid.cards > ol > li {
  border-color: rgba(0,0,0,0.07);
}

/* ══════════════════════════════
   CUSTOM SECTIONS
   ══════════════════════════════ */

/* ── Paper Notes: category groups ── */
.paper-group {
  margin: 0.5rem 0 1.5rem;
}

.paper-group h3 {
  font-family: var(--mono) !important;
  font-size: 0.62rem !important;
  font-weight: 400 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.16em !important;
  color: var(--md-default-fg-color--lighter) !important;
  margin: 1.8rem 0 0.4rem !important;
  padding: 0 !important;
}

.paper-list {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.paper-list li {
  padding: 0.55rem 0 !important;
  padding-left: 0 !important;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

[data-md-color-scheme="default"] .paper-list li {
  border-bottom-color: rgba(0,0,0,0.05);
}

.paper-list li::before {
  display: none !important;
}

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

.paper-list li a {
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  color: var(--md-default-fg-color);
  font-size: 0.92rem;
  letter-spacing: -0.005em;
}

.paper-list li a:hover {
  color: var(--accent);
}

.paper-tag {
  font-family: var(--mono);
  font-size: 0.64rem;
  color: var(--md-default-fg-color--lighter);
  letter-spacing: 0.02em;
}

/* ── Post listing ── */
.post-list {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.post-list li {
  padding: 1.2rem 0 !important;
  padding-left: 0 !important;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

[data-md-color-scheme="default"] .post-list li {
  border-bottom-color: rgba(0,0,0,0.05);
}

.post-list li::before {
  display: none !important;
}

.post-list li:first-child {
  padding-top: 0 !important;
}

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

.post-list li a {
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  color: var(--md-default-fg-color);
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.post-list li a:hover {
  color: var(--accent);
}

.post-meta {
  font-family: var(--mono);
  font-size: 0.64rem;
  color: var(--md-default-fg-color--lighter);
  letter-spacing: 0.03em;
}

.post-desc {
  font-size: 0.84rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.65;
  margin: 0;
}

/* ── Elsewhere links ── */
.elsewhere {
  display: flex;
  gap: 2.5rem;
  margin-top: 0.8rem;
}

.elsewhere a {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.4rem 0;
  color: var(--md-default-fg-color--lighter);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

.elsewhere .label {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--md-default-fg-color);
  font-size: 0.9rem;
  letter-spacing: -0.005em;
  transition: color var(--transition);
}

.elsewhere .hint {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--md-default-fg-color--lighter);
  letter-spacing: 0.02em;
}

/* ── Page fade-in ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.md-content__inner {
  animation: fadeUp 0.5s ease both;
}

/* ── Light mode subtle borders ── */
[data-md-color-scheme="default"] .md-typeset hr {
  border-top-color: rgba(0,0,0,0.07);
}

[data-md-color-scheme="default"] .md-typeset pre {
  border-color: rgba(0,0,0,0.06);
}

[data-md-color-scheme="default"] .md-typeset blockquote {
  border-left-color: var(--accent);
}