/* Kinet blog — shared stylesheet (light-only, warm paper)
   Brand: Fraunces serif + warm-paper palette, inherited from phinn.github.io. */

:root {
  --paper: #fbfaf8;
  --paper-deep: #f4f2ee;
  --ink: #26231e;
  --ink-soft: #6e6a62;
  --accent: #b4542e;
  --accent-soft: #f7ece4;
  --line: #e6e3dd;
  --code-bg: #f3f1ec;
  --code-ink: #3a362e;
  --pre-bg: #26211b;
  --pre-ink: #e9e1d2;
  --serif: "Fraunces", "Palatino", "Georgia", "Songti SC", "STSong", "Hiragino Mincho ProN", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---- dark theme (opt-in; stored in localStorage 'phinn-theme') ---- */
html[data-theme="dark"] {
  --paper: #191612;
  --paper-deep: #201c16;
  --ink: #e8e0d2;
  --ink-soft: #9a9083;
  --accent: #d97a50;
  --accent-soft: #3a2d24;
  --line: #35302a;
  --code-bg: #26221c;
  --code-ink: #d8cfbf;
  --pre-bg: #14110d;
  --pre-ink: #e9e1d2;
}

/* ---- sepia theme (warm ebook look, lighter than light) ---- */
html[data-theme="sepia"] {
  --paper: #f0e5ce;
  --paper-deep: #e8dabc;
  --ink: #3f3425;
  --ink-soft: #7d6f58;
  --accent: #a35428;
  --accent-soft: #ecdcc0;
  --line: #ddd0b2;
  --code-bg: #e6d9ba;
  --code-ink: #453a2a;
  --pre-bg: #2b261c;
  --pre-ink: #e8dfc8;
}

/* ---- theme menu (option list; markup injected by blog.js) ---- */
.theme-menu { position: absolute; margin-top: 8px; background: var(--paper-deep); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 24px rgba(41, 36, 30, .14); padding: 5px; z-index: 60; min-width: 150px; }
.tm-opt { display: flex; align-items: center; gap: 8px; width: 100%; border: 0; background: transparent; color: var(--ink); font: 500 13px/1 var(--sans); padding: 8px 10px; border-radius: 6px; cursor: pointer; text-align: left; }
.tm-opt:hover { background: var(--accent-soft); color: var(--accent); text-decoration: none; }
.tm-opt.on { color: var(--accent); font-weight: 700; }
.tm-opt svg { width: 14px; height: 14px; flex: none; }
.tm-opt .tm-check { margin-left: auto; font-weight: 700; }

/* ---- theme toggle button ---- */
.theme-btn { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--ink-soft); cursor: pointer; vertical-align: middle; }
.theme-btn:hover { color: var(--accent); border-color: var(--accent); }
.theme-btn svg { width: 15px; height: 15px; display: block; }
.theme-btn .icon-sun { display: none; }
.theme-btn .icon-moon { display: block; }
html[data-theme="dark"] .theme-btn .icon-sun { display: block; }
html[data-theme="dark"] .theme-btn .icon-moon { display: none; }

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none!important; transition: none!important; } }
body {
  background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 17.5px; line-height: 1.75;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
::selection { background: var(--accent); color: #fff; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---- reading progress bar ---- */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: var(--accent); z-index: 50; }

/* ---- top bar ---- */
.topbar { border-bottom: 1px solid var(--line); }
.tb-wrap { max-width: 1080px; margin: 0 auto; padding: 18px 24px; display: flex; justify-content: space-between; align-items: baseline; }
.tb-home { font-family: var(--serif); font-size: 19px; font-weight: 600; color: var(--ink); letter-spacing: .2px; }
.tb-home:hover { text-decoration: none; color: var(--accent); }
.tb-home em { font-style: normal; color: var(--accent); }
.tb-nav { display: flex; align-items: baseline; gap: 22px; font-size: 14px; }
.tb-nav a { color: var(--ink-soft); }
.tb-nav a:hover { color: var(--accent); text-decoration: none; }
.tb-nav a.on { color: var(--accent); }

/* ---- article layout ---- */
.post-grid { max-width: 1080px; margin: 0 auto; padding: 52px 24px 0; display: grid; grid-template-columns: minmax(0, 680px); justify-content: center; column-gap: 56px; }
html { scroll-padding-top: 84px; }
@media (min-width: 1240px) {
  .post-grid { grid-template-columns: minmax(0, 680px) 224px; }
  .toc { display: block; }
}

/* ---- mobile ---- */
@media (max-width: 720px) {
  .tb-wrap { padding: 14px 16px; }
  .tb-nav { gap: 14px; font-size: 13px; }
  .post-grid { padding: 36px 16px 0; }
  .p-title { font-size: 28px; }
  .pn { grid-template-columns: 1fr; }
  .cta { padding: 22px 18px; }
  .cta .btn { width: 100%; margin: 4px 0; text-align: center; }
}
@media (max-width: 480px) {
  .tb-nav a[href="/#apps"] { display: none; }
  .p-body table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  .p-body table td, .p-body table th { white-space: normal; min-width: 130px; }
}
.p-meta { color: var(--ink-soft); font-size: 13.5px; letter-spacing: .4px; text-transform: uppercase; margin-bottom: 14px; }
.p-meta a { color: var(--ink-soft); border-bottom: 1px solid var(--line); }
.p-meta a:hover { color: var(--accent); text-decoration: none; border-color: var(--accent); }
h1.p-title { font-family: var(--serif); font-weight: 600; font-size: clamp(29px, 5vw, 40px); line-height: 1.22; letter-spacing: -.3px; margin-bottom: 18px; }
.p-lead { font-family: var(--serif); font-size: 19.5px; line-height: 1.6; color: var(--ink-soft); font-style: italic; margin-bottom: 34px; padding-bottom: 30px; border-bottom: 1px solid var(--line); }

/* ---- TOC (sticky right rail, wide screens) ---- */
.toc { display: none; position: sticky; top: 64px; align-self: start; font-size: 13.5px; line-height: 1.5; padding-top: 6px; }
.toc .toc-h { font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 10px; }
.toc a { display: block; color: var(--ink-soft); padding: 4.5px 0 4.5px 12px; border-left: 2px solid var(--line); }
.toc a:hover { color: var(--accent); text-decoration: none; }
.toc a.on { color: var(--accent); border-left-color: var(--accent); }

/* ---- article body ---- */
.p-body h2 { font-family: var(--serif); font-weight: 600; font-size: 24px; line-height: 1.3; margin: 2.1em 0 .7em; letter-spacing: -.2px; scroll-margin-top: 24px; }
.p-body h3 { font-family: var(--serif); font-weight: 600; font-size: 18.5px; margin: 1.8em 0 .5em; }
.p-body p { margin: .9em 0; }
.p-body strong { font-weight: 650; }
.p-body ul, .p-body ol { margin: .9em 0; padding-left: 1.4em; }
.p-body li { margin: .45em 0; }
.p-body li::marker { color: var(--accent); }
.p-body hr { border: none; border-top: 1px solid var(--line); margin: 2.4em auto; width: 120px; }
.p-body blockquote { border-left: 3px solid var(--accent); padding: 2px 0 2px 18px; color: var(--ink-soft); margin: 1.4em 0; }
.p-body blockquote p { margin: .4em 0; }
.p-body code { font-family: var(--mono); font-size: .82em; background: var(--code-bg); color: var(--code-ink); padding: .15em .45em; border-radius: 5px; }
.p-body pre { background: var(--pre-bg); color: var(--pre-ink); border-radius: 10px; margin: 1.3em 0; overflow-x: auto; }
.p-body pre code { display: block; background: none; color: inherit; padding: 16px 20px; font-size: 13.5px; line-height: 1.62; }
.codeblk { margin: 1.3em 0; }
.codeblk .cb-lang { display: flex; justify-content: flex-end; padding: 7px 14px 0; font-family: var(--mono); font-size: 10.5px; letter-spacing: 1px; text-transform: uppercase; color: #8d8371; }
.codeblk pre { margin: 0; border-top-left-radius: 0; border-top-right-radius: 0; }
.codeblk pre code { padding-top: 10px; }
.p-body table { border-collapse: collapse; width: 100%; margin: 1.4em 0; font-size: 14.5px; line-height: 1.55; }
.p-body th, .p-body td { border: 1px solid var(--line); padding: 9px 13px; text-align: left; vertical-align: top; }
.p-body th { background: var(--paper-deep); font-weight: 600; font-family: var(--serif); }
.p-body tr:nth-child(even) td { background: rgba(239, 234, 221, .45); }
.p-body a { border-bottom: 1px solid rgba(180, 84, 46, .4); }
.p-body a:hover { border-bottom-color: var(--accent); text-decoration: none; }
.footref { font-size: 13px; color: var(--ink-soft); }

/* ---- CTA card ---- */
.cta { background: var(--pre-bg); color: var(--pre-ink); border-radius: 14px; padding: 26px 28px; margin: 52px 0 8px; }
.cta b { font-family: var(--serif); font-size: 18px; font-weight: 600; }
.cta p { color: #b3a893; font-size: 14.5px; margin: 8px 0 2px; line-height: 1.6; }
.cta .more { margin-top: 14px; font-size: 13px; color: #9a8f7d; line-height: 1.6; }
.cta .more a { color: #c96a3e; text-decoration: none; border-bottom: 1px solid rgba(201,106,62,.35); }
.cta .more a:hover { border-bottom-color: #c96a3e; }
.btn { display: inline-block; background: var(--accent); color: #fff !important; padding: 10px 18px; border-radius: 9px; font-weight: 600; font-size: 14.5px; margin: 14px 10px 0 0; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn.alt { background: transparent; border: 1px solid #4a4238; color: var(--pre-ink) !important; }
.btn.alt:hover { border-color: var(--accent); color: var(--accent) !important; }

/* ---- prev / next ---- */
.pn { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 34px 0 0; }
.pn a { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; color: var(--ink); min-height: 74px; display: flex; flex-direction: column; justify-content: center; }
.pn a:hover { border-color: var(--accent); text-decoration: none; }
.pn .pn-k { font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 4px; }
.pn .pn-t { font-family: var(--serif); font-weight: 600; font-size: 15px; line-height: 1.35; }
.pn .next { text-align: right; }
.pn .solo { grid-column: 1 / -1; }

/* ---- footer ---- */
.site-foot { border-top: 1px solid var(--line); margin-top: 64px; }
.sf-wrap { max-width: 1080px; margin: 0 auto; padding: 30px 24px 44px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--ink-soft); font-size: 13.5px; }
.sf-wrap a { color: var(--ink-soft); }
.sf-wrap a:hover { color: var(--accent); text-decoration: none; }

/* ==================== blog index ==================== */
.lp { max-width: 720px; margin: 0 auto; padding: 56px 24px 0; }
.lp-hero h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(32px, 6vw, 44px); letter-spacing: -.4px; }
.lp-hero .lp-sub { color: var(--ink-soft); font-size: 16.5px; margin: 12px 0 6px; max-width: 56ch; }
.lp-hero .lp-rss { font-size: 13.5px; color: var(--ink-soft); }
.lp-hero .lp-rss a { color: var(--accent); }
.lp-list { margin-top: 40px; }
.post-card { display: block; padding: 26px 0; border-top: 1px solid var(--line); }
.post-card:last-child { border-bottom: 1px solid var(--line); }
.post-card .pc-meta { font-size: 12.5px; letter-spacing: .8px; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 8px; }
.post-card h2 { font-family: var(--serif); font-weight: 600; font-size: 22px; line-height: 1.3; margin-bottom: 8px; transition: color .15s; }
.post-card:hover h2 { color: var(--accent); }
.post-card h2 a { color: inherit; }
.post-card p { color: var(--ink-soft); font-size: 15px; margin: 0; max-width: 62ch; }
.pc-more { display: inline-block; font-size: 13.5px; font-weight: 600; margin-top: 10px; }
.post-card:hover { text-decoration: none; }