/* Global dark theme tokens and shared overrides */
:root {
  color-scheme: dark;
  --background-color: #0d1117;
  --background-secondary: #141a23;
  --surface-color: #141a23;
  --surface-color-soft: #111722;
  --text-primary: #e6edf3;
  --text-secondary: #b8c2d1;
  --text-tertiary: #909caf;
  --border-color: #263041;
  --border-color-strong: #344158;
  --link-color: #86c5ff;
  --link-visited: #5a9ad3;
  --link-hover: #a6d7ff;
  --toggle-thumb-bg: #000000;
  --toggle-icon-color: #ffffff;
  --accent-color: #86c5ff;
  --accent-color-hover: #a6d7ff;
  --quote-accent: #78b7f7;
  --inline-code-background: #182233;
  --code-background: #0f1520;
  --code-text: #d6e2f0;
  --highlight-comment: #8190a8;
  --highlight-keyword: #ff9dcb;
  --highlight-number: #f4cb86;
  --highlight-string: #a9dbff;
  --highlight-name: #b8d8ff;
  --highlight-operator: #d3dcf0;
  --highlight-error-text: #ffc3c3;
  --highlight-error-bg: rgba(255, 99, 99, 0.18);
  --selection-color: rgba(134, 197, 255, 0.28);
  --row-hover-background: rgba(134, 197, 255, 0.07);
  --blockquote-background: rgba(134, 197, 255, 0.06);
  --table-row-alt: rgba(255, 255, 255, 0.02);
  --graph-control-bg: #141a23;
  --graph-control-text: #b8c2d1;
  --graph-control-hover-bg: rgba(134, 197, 255, 0.08);
  --graph-control-active-bg: #2f6ea8;
  --graph-control-active-text: #eaf5ff;
  --graph-control-active-border: #488ccc;
  --graph-canvas-bg: #10161f;
  --graph-node-stroke: #111722;
  --graph-node-hover-stroke: #c7d3e9;
  --graph-bridge-stroke: #d2ddf0;
  --graph-link-color: #6f7d93;
  --graph-link-highlight: #d0dbee;
  --graph-node-label: #e6edf3;
  --graph-cluster-label: #a8b5ca;
  --tooltip-bg: #1f2937;
  --tooltip-text: #ffffff;
  --info-term-color: #f0b866;
  --info-term-hover: #f7cf91;
  --info-term-underline: #d4983e;
}

:root[data-theme="light"] {
  color-scheme: light;
  --background-color: #ffffff;
  --background-secondary: #ffffff;
  --surface-color: #ffffff;
  --surface-color-soft: #f5f5f5;
  --text-primary: #121a29;
  --text-secondary: #2f3b4f;
  --text-tertiary: #5e6d85;
  --border-color: #dddddd;
  --border-color-strong: #cccccc;
  --link-color: #1f6fd4;
  --link-visited: #1853a0;
  --link-hover: #2f85e6;
  --toggle-thumb-bg: #ffffff;
  --toggle-icon-color: #000000;
  --accent-color: #1b6fcf;
  --accent-color-hover: #165aa8;
  --quote-accent: #1b6fcf;
  --inline-code-background: #f3f3f3;
  --code-background: #f7f7f7;
  --code-text: #1f2d3d;
  --highlight-comment: #6b7280;
  --highlight-keyword: #c13756;
  --highlight-number: #9a6700;
  --highlight-string: #005187;
  --highlight-name: #5b3cb0;
  --highlight-operator: #2a3446;
  --highlight-error-text: #9f1239;
  --highlight-error-bg: rgba(244, 63, 94, 0.15);
  --selection-color: rgba(27, 111, 207, 0.18);
  --row-hover-background: #f5f5f5;
  --blockquote-background: #f8f8f8;
  --table-row-alt: #fafafa;
  --graph-control-bg: #ffffff;
  --graph-control-text: #2f3b4f;
  --graph-control-hover-bg: #f5f5f5;
  --graph-control-active-bg: #1b6fcf;
  --graph-control-active-text: #ffffff;
  --graph-control-active-border: #1b6fcf;
  --graph-canvas-bg: #ffffff;
  --graph-node-stroke: #ffffff;
  --graph-node-hover-stroke: #1e2d3f;
  --graph-bridge-stroke: #304761;
  --graph-link-color: #8897aa;
  --graph-link-highlight: #334155;
  --graph-node-label: #1f2937;
  --graph-cluster-label: #556278;
  --tooltip-bg: #0f1726;
  --tooltip-text: #f8fbff;
  --info-term-color: #b37714;
  --info-term-hover: #d49325;
  --info-term-underline: #9a6700;
}

html,
body {
  background-color: var(--background-color);
}

body {
  color: var(--text-primary);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-primary);
}

p,
li,
dd,
dt {
  color: var(--text-secondary);
}

a:link {
  color: var(--link-color);
}

a:visited {
  color: var(--link-visited);
}

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

hr {
  border-color: var(--border-color);
}

.site-header,
.site-footer {
  border-color: var(--border-color);
}

.site-title,
.site-title:visited {
  color: var(--text-primary);
}

.site-nav .page-link {
  color: var(--text-secondary);
}

.site-nav .page-link:hover {
  color: var(--text-primary);
}

.site-nav .menu-icon>svg {
  fill: var(--text-secondary);
}

@media screen and (min-width: 601px) {
  .site-header .wrapper {
    display: flex;
    align-items: center;
    min-height: 56px;
    padding-top: 0;
    padding-bottom: 0;
  }

  .site-title {
    float: none;
    line-height: 1;
    margin-bottom: 0;
    font-weight: 300;
    letter-spacing: -1px;
  }

  .site-nav {
    float: none;
    margin-left: auto;
    line-height: 1;
    display: flex;
    align-items: center;
  }

  .site-nav .trigger {
    display: flex;
    align-items: center;
    gap: 18px;
    order: 1;
  }

  .site-header .theme-toggle {
    margin-left: 20px;
  }

  .site-nav .page-link {
    display: inline-flex;
    align-items: center;
    line-height: 1;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    padding: 0;
    margin: 0;
  }

  .site-nav .page-link:not(:last-child) {
    margin-right: 0;
  }
}

@media screen and (max-width: 600px) {
  .site-nav {
    background-color: var(--surface-color);
    border-color: var(--border-color);
  }
}

.post-meta,
.reading-time,
.post-date {
  color: var(--text-tertiary);
}

.home .post-item,
.post-item {
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  transition: background-color 0.25s ease;
}

.home .post-item:hover,
.post-item:hover {
  background-color: var(--row-hover-background);
}

.home .post-title a,
.post-title a {
  color: var(--link-color);
}

.home .post-title a:visited,
.post-title a:visited {
  color: var(--link-visited);
}

.site-footer p {
  color: var(--text-tertiary);
}

blockquote {
  background: var(--blockquote-background);
  border-left-color: var(--quote-accent);
  color: var(--text-secondary);
  border-radius: 0 8px 8px 0;
  letter-spacing: 0;
}

blockquote p {
  color: var(--text-secondary);
}

code {
  background-color: var(--inline-code-background);
  color: var(--code-text);
  border-color: var(--border-color);
}

pre {
  background-color: var(--code-background);
  border-color: var(--border-color);
}

pre code {
  background: transparent;
}

.highlight {
  background: var(--code-background);
  color: var(--code-text);
}

.highlight .c,
.highlight .cm,
.highlight .c1,
.highlight .cs {
  color: var(--highlight-comment);
  font-style: italic;
}

.highlight .k,
.highlight .kc,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt {
  color: var(--highlight-keyword);
}

.highlight .m,
.highlight .mf,
.highlight .mh,
.highlight .mi,
.highlight .mo {
  color: var(--highlight-number);
}

.highlight .s,
.highlight .sa,
.highlight .sb,
.highlight .sc,
.highlight .sd,
.highlight .s1,
.highlight .s2,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sr,
.highlight .ss,
.highlight .sx {
  color: var(--highlight-string);
}

.highlight .na,
.highlight .nb,
.highlight .nc,
.highlight .nd,
.highlight .ne,
.highlight .nf,
.highlight .nn,
.highlight .nt,
.highlight .nv {
  color: var(--highlight-name);
}

.highlight .o,
.highlight .ow {
  color: var(--highlight-operator);
}

.highlight .err {
  color: var(--highlight-error-text);
  background-color: var(--highlight-error-bg);
}

table {
  color: var(--text-secondary);
  border-color: var(--border-color);
}

table th {
  background-color: var(--surface-color);
  border-color: var(--border-color-strong);
  color: var(--text-primary);
}

table tr:nth-child(even) {
  background-color: var(--table-row-alt);
}

table td {
  border-color: var(--border-color);
}

input,
textarea,
select {
  background-color: var(--surface-color);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.site-header .theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  margin-left: 20px;
  padding: 0;
  height: 24px;
  border: none;
  background-color: transparent;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-family: inherit;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease;
}

.site-header .theme-toggle:hover {
  color: var(--text-primary);
}

.site-header .theme-toggle:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
  border-radius: 999px;
}

.site-header .theme-toggle-track {
  width: 42px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid var(--border-color-strong);
  background-color: var(--surface-color-soft);
  display: inline-flex;
  align-items: center;
  padding: 2px;
  box-sizing: border-box;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.site-header .theme-toggle-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--toggle-thumb-bg);
  position: relative;
  transform: translateX(0);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

:root[data-theme="dark"] .site-header .theme-toggle-thumb {
  transform: translateX(18px);
}

.site-header .theme-toggle-thumb::before {
  content: "\263D\FE0E";
  display: block;
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  color: var(--toggle-icon-color);
}

:root[data-theme="light"] .site-header .theme-toggle-thumb::before {
  content: "\2600\FE0E";
}

@media (min-width: 768px) {
  .page-container {
    max-width: 50%;
    margin: 0 auto;
  }
}

.bleed {
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  width: 70vw;
  max-width: none;
}

.bleed img {
  display: block;
  width: 100%;
  height: auto;
}

.reading-time {
  font-size: 0.875em;
}

@media screen and (max-width: 600px) {
  .site-header .theme-toggle {
    position: absolute;
    top: 15px;
    right: 65px;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
  }

  .site-header .theme-toggle-track {
    vertical-align: middle;
  }
}

.home .page-title {
  margin: 0 0 14px;
  padding-left: 0;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.home .post-list {
  margin-left: 0;
  padding-left: 0;
}

.home .post-item {
  padding: 10px 0;
}

.home .post-title {
  margin-left: 0;
  margin-bottom: 0;
  font-size: 1.5em;
}

.home .post-tags {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.home .post-date {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

@media screen and (max-width: 600px) {
  .home .page-title {
    margin-bottom: 12px;
  }

  .home .post-item {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .home .post-tags {
    margin-right: 6px;
  }
}

/* ── Info tooltip (Stratechery-style) ── */
.info-term {
  position: relative;
  cursor: help;
  border-bottom: 1.5px dotted var(--info-term-underline);
  color: var(--info-term-color);
  font-weight: inherit;
  white-space: nowrap;
}

.info-term a {
  color: inherit;
  text-decoration: none;
}

.info-term:hover {
  color: var(--info-term-hover);
}

.info-term .info-bubble {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 340px;
  padding: 12px 16px;
  border-radius: 8px;
  background: var(--tooltip-bg);
  color: var(--tooltip-text);
  font-size: 0.84rem;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0;
  white-space: normal;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  z-index: 100;
  pointer-events: none;
  transition: opacity 0.18s ease, visibility 0.18s ease;
}

/* arrow */
.info-term .info-bubble::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--tooltip-bg);
}

.info-term:hover .info-bubble,
.info-term:focus .info-bubble {
  visibility: visible;
  opacity: 1;
}

/* keep bubble on-screen on small viewports */
@media (max-width: 600px) {
  .info-term .info-bubble {
    left: 0;
    transform: none;
    max-width: 280px;
  }

  .info-term .info-bubble::after {
    left: 20px;
  }
}