/* =========================
   Light mode
   ========================= */

:root {
  --ink: #243442;
  --ink2: #4b5c6b;
  --muted: #71808d;
  --paper: #f6f7f5;
  --surface: #ffffff;
  --line: #dfe5e5;
  --accent: #9b0f0f;
  --code-bg: #f0f2f2;
}

/* =========================
   Base
   ========================= */

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.9;
}

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

.site-header,
.site-main,
.site-footer {
  width: min(1100px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
}

.site-title {
  color: var(--ink);
  text-decoration: none;
  font-size: 24px;
  letter-spacing: .12em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.site-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.site-header nav a {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.site-main {
  min-height: 70vh;
  padding: 55px 0 80px;
}

.home-intro {
  margin-bottom: 55px;
}

/* =========================
   Headings
   ========================= */

.eyebrow {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: .16em;
}

h1, h2, h3 {
  font-weight: bold;
  line-height: 1.5;
}

h1 {
  font-size: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line);
  margin: 56px 0 16px;
}

h2 {
  font-size: clamp(18px, 2.5vw, 24px);
  margin: 40px 0 16px;
}

h3 {
  font-size: clamp(16px, 2vw, 20px);
  margin: 32px 0 16px;
}

/* =========================
   Home
   ========================= */

.rating-row span:first-child {
  display: inline-block;
  width: 160px;
}

.post-list {
  list-style: none;
  border: solid 1px var(--line);
  border-radius: 10px;
  padding: 16px 24px;
  margin-top: 56px;
}

.post-list h2 {
  margin-top: 0;
}

.post-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.post-list time {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.post-list .post-title-link {
  font-size: 18px;
  text-decoration: none;
}

.post-list p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

/* =========================
   Tags
   ========================= */

.home-tags {
  margin: 20px 0;
}

.home-tags h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  border: none;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  color: var(--accent);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.tag-list-post {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.tag-list-post .tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  color: var(--accent);
  font-size: 0.7rem;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.tag-list .tag:hover,
.tag-list-post .tag:hover {
  background: var(--accent);
  color: white;
}

.tag-list .tag span {
  font-size: 0.8rem;
  opacity: 0.7;
}

ul.tag-list {
  list-style: none;
  padding: 0;
}

.tag-section {
  margin-top: 32px;
  scroll-margin-top: 80px;
}

/* =========================
   Post
   ========================= */

.post {
  background: var(--surface);
  padding: clamp(24px, 6vw, 65px);
  border: 1px solid var(--line);
}

.post-header {
  margin-bottom: 35px;
}

.post-header .post-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 400;
  line-height: 1.5;
  border-bottom: none;
  margin: 8px 0;
}

.post-content {
  min-width: 0;
  overflow-wrap: anywhere;
}

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

.post-content pre {
  overflow-x: auto;
  padding: 16px;
  background: var(--code-bg);
  border-radius: 8px;
}

.post-content code {
  font-family: ui-monospace, Consolas, monospace;
}

/* =========================
   Post layout
   ========================= */

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 40px;
  align-items: start;
}

/* =========================
   Post Contents
   ========================= */

.post-content {
  grid-column: 1;
  grid-row: 1;
}

/* =========================
   Table of contents
   ========================= */

.toc {
  grid-column: 2;
  grid-row: 1;

  position: sticky;
  top: 24px;

  max-height: calc(100vh - 48px);
  overflow-y: auto;

  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.toc h2 {
  font-weight: 500;
  margin: 0 0 12px;
  padding-bottom: 8px;
  font-size: 1rem;
  border-bottom: 1px solid var(--line);
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc li {
  margin: 8px 0;
  font-size: 0.9rem;
}

.toc .toc-h1 {
  font-weight: bold;
}

.toc .toc-h2 {
  padding-left: 12px;
}

.toc .toc-h3 {
  padding-left: 24px;
  font-size: 0.85rem;
}

.toc code {
  font-family: ui-monospace, Consolas, monospace;
}

.toc a {
  color: var(--ink2);
  text-decoration: none;
}

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

/* =========================
   Code copy button
   ========================= */

.highlight {
  position: relative;
}

.copy-button {
  position: absolute;
  top: 10px;
  right: 10px;

  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;

  background: var(--surface);
  color: var(--muted);

  font-size: 12px;
  cursor: pointer;
  transition: color 0.2s;
}

.copy-button:hover {
  color: var(--ink2);
}

/* =========================
   Footer
   ========================= */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 35px;
  color: var(--muted);
  font-size: 12px;
}

/* =========================
   Responsive
   ========================= */

@media (max-width: 800px) {
  .post-layout {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .toc {
    grid-column: 1;
    grid-row: 1;

    position: static;
    max-height: none;
  }

  .post-content {
    grid-column: 1;
    grid-row: 2;
  }
}

@media (max-width: 600px) {
  .site-header {
    align-items: flex-start;
    gap: 15px;
  }

  .site-main {
    padding-top: 35px;
  }
}

/* =========================
   GitHub Light syntax highlighting
   ========================= */

.highlight .c,
.highlight .c1,
.highlight .cm,
.highlight .cp,
.highlight .cs {
  color: #6e7781;
}

.highlight .k,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .o,
.highlight .ow {
  color: #cf222e;
}

.highlight .kt,
.highlight .nc,
.highlight .nn {
  color: #953800;
}

.highlight .nf,
.highlight .fm {
  color: #8250df;
}

.highlight .na {
  color: #0550ae;
}

.highlight .s,
.highlight .s1,
.highlight .s2,
.highlight .sb,
.highlight .sc,
.highlight .dl {
  color: #0a3069;
}

.highlight .m,
.highlight .mi,
.highlight .mf,
.highlight .mh,
.highlight .mo {
  color: #0550ae;
}

.highlight .nb,
.highlight .bp {
  color: #953800;
}

.highlight .no {
  color: #0550ae;
}

.highlight .nv,
.highlight .vi,
.highlight .vg {
  color: #953800;
}

.highlight .gd {
  color: #82071e;
  background: #ffebe9;
}

.highlight .gi {
  color: #116329;
  background: #dafbe1;
}

/* =========================
   Dark mode
   ========================= */

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;

    --ink: #e1e8ec;
    --ink2: #9baab5;
    --muted: #607588;
    --paper: #151c22;
    --surface: #1e2932;
    --line: #35434d;
    --accent: #e58b8b;
    --code-bg: #26343e;
  }
}

/* =========================
   GitHub Dark syntax highlighting
   ========================= */

@media (prefers-color-scheme: dark) {
  .highlight .c,
  .highlight .c1,
  .highlight .cm,
  .highlight .cp,
  .highlight .cs {
    color: #8b949e;
  }

  .highlight .k,
  .highlight .kd,
  .highlight .kn,
  .highlight .kp,
  .highlight .kr,
  .highlight .o,
  .highlight .ow {
    color: #ff7b72;
  }

  .highlight .kt,
  .highlight .nc,
  .highlight .nn {
    color: #ffa657;
  }

  .highlight .nf,
  .highlight .fm {
    color: #d2a8ff;
  }

  .highlight .na {
    color: #79c0ff;
  }

  .highlight .s,
  .highlight .s1,
  .highlight .s2,
  .highlight .sb,
  .highlight .sc,
  .highlight .dl {
    color: #a5d6ff;
  }

  .highlight .m,
  .highlight .mi,
  .highlight .mf,
  .highlight .mh,
  .highlight .mo {
    color: #79c0ff;
  }

  .highlight .nb,
  .highlight .bp {
    color: #ffa657;
  }

  .highlight .no {
    color: #79c0ff;
  }

  .highlight .nv,
  .highlight .vi,
  .highlight .vg {
    color: #ffa657;
  }

  .highlight .gd {
    color: #ffa198;
    background: #490202;
  }

  .highlight .gi {
    color: #7ee787;
    background: #04260f;
  }
}