/*
Theme Name: Shermodynamics
Author: Sherman Bausch
Description: Personal blog theme for Shermodynamics.
Version: 1.0.0
Text Domain: shermodynamics
*/

/* ============================================================
   SHERMODYNAMICS
   Type scale (1.25 major third) on a 1.6rem baseline.
   ============================================================ */
:root {
  --paper: #f3ede0;
  --ink: #33271b;
  --ink-soft: #6f6151;
  --rule: #cdbfa8;
  --rule-strong: #5a4a37;
  --accent: #b6491f;
  --accent-quiet: #9a5638;
  --sunk-deep: #e6ddc9;
  --thumb-bg: #e3d9c6;

  --step--1: 0.82rem;
  --step-0: 1.16rem;
  --step-1: 1.45rem;
  --step-2: 1.8rem;
  --step-3: 2.25rem;
  --step-4: 2.8rem;

  --lh: 1.7;
  --rhythm: 1.6rem;
  --maxw: 42rem;
  --wide: 50rem;
}

:root[data-theme="dark"] {
  --paper: #1c1813; --ink: #ece3d3; --ink-soft: #a99b85;
  --rule: #3a3127; --rule-strong: #6f6151; --accent: #e0743f;
  --accent-quiet: #d68a5e; --sunk-deep: #2b251d; --thumb-bg: #2a241c;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1c1813; --ink: #ece3d3; --ink-soft: #a99b85;
    --rule: #3a3127; --rule-strong: #6f6151; --accent: #e0743f;
    --accent-quiet: #d68a5e; --sunk-deep: #2b251d; --thumb-bg: #2a241c;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Atkinson Hyperlegible", system-ui, sans-serif;
  font-size: var(--step-0);
  line-height: var(--lh);
  transition: background .3s ease, color .3s ease;
}

/* ---- masthead ---- */
.bar {
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 5;
  transition: background .3s ease;
}
.bar-inner {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 1.3rem 1.5rem 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}
.brand {
  font-family: "Fraunces", serif;
  font-weight: 900;
  font-size: 2.4rem;
  line-height: 1;
  letter-spacing: -.025em;
  color: var(--ink);
  text-decoration: none;
}
.bar-right {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.theme-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1;
  padding: .15rem;
  transition: color .15s;
}
.theme-btn:hover { color: var(--accent); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }

/* ---- index ---- */
.idx-head {
  max-width: var(--wide);
  margin: 0 auto;
  padding: calc(var(--rhythm) * 2.2) 1.5rem calc(var(--rhythm) * 1.5);
}
.idx-lead {
  font-family: "Newsreader", Georgia, serif;
  font-weight: 400;
  font-style: italic;
  font-size: var(--step-1);
  line-height: 1.4;
  color: var(--ink-soft);
  margin: 0;
  max-width: 34rem;
}
.idx-list {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 1.5rem calc(var(--rhythm) * 2.5);
}
.entry {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  gap: 1.4rem;
  align-items: center;
  padding: 1.1rem 0;
  border-top: 1px solid var(--rule);
  text-decoration: none;
  color: inherit;
}
.entry:first-of-type { border-top: 1.5px solid var(--rule-strong); }
.entry:last-of-type { border-bottom: 1px solid var(--rule); }
.entry-thumb {
  width: 4rem;
  height: 3rem;
  object-fit: cover;
  border-radius: 2px;
  background: var(--thumb-bg);
  display: block;
}
.entry-thumb.none { visibility: hidden; }
.entry h2 {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: var(--step-1);
  line-height: 1.18;
  letter-spacing: -.015em;
  margin: 0;
  transition: color .15s;
}
.entry:hover h2 { color: var(--accent); }
.entry-date {
  font-size: var(--step--1);
  letter-spacing: .04em;
  color: var(--ink-soft);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ---- post ---- */
.post { padding: calc(var(--rhythm) * 2) 0 calc(var(--rhythm) * 1.8); }
.post-eyebrow {
  font-weight: 700;
  font-size: var(--step--1);
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--rhythm);
}
.post h1 {
  font-family: "Fraunces", serif;
  font-weight: 900;
  font-size: clamp(var(--step-3), 5.5vw, var(--step-4));
  line-height: 1.05;
  letter-spacing: -.025em;
  margin: 0 0 .6rem;
}
.post-date {
  font-size: var(--step--1);
  letter-spacing: .04em;
  color: var(--ink-soft);
  margin: 0 0 calc(var(--rhythm) * 1.4);
}
.hero {
  width: 100%;
  display: block;
  aspect-ratio: 3/2;
  object-fit: cover;
  border-radius: 2px;
  background: var(--thumb-bg);
  margin: 0 0 calc(var(--rhythm) * 1.4);
  height: auto;
}
.post p { margin: 0 0 var(--rhythm); }
.post .lede {
  font-family: "Fraunces", serif;
  font-style: italic;
  font-weight: 400;
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--ink-soft);
  margin-bottom: calc(var(--rhythm) * 1.1);
}

/* link treatment */
.post-content a {
  color: var(--accent-quiet);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
  text-decoration-color: color-mix(in srgb, var(--accent-quiet) 40%, transparent);
  transition: text-decoration-color .15s, color .15s;
}
.post-content a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.post-content em { font-style: italic; }
.post-content strong { font-weight: 700; }
.post-content h2 {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: var(--step-2);
  letter-spacing: -.01em;
  margin: calc(var(--rhythm) * 1.6) 0 var(--rhythm);
}
.post-content ul,
.post-content ol {
  padding-left: 1.4rem;
  margin: 0 0 var(--rhythm);
}
.post-content li { margin-bottom: .4rem; }
.post-content img { max-width: 100%; height: auto; border-radius: 2px; display: block; }

/* inline blockquote */
.post-content blockquote {
  margin: calc(var(--rhythm) * 1.2) 0;
  padding-left: 1.4rem;
  border-left: 2px solid var(--rule-strong);
  color: var(--ink-soft);
  font-style: italic;
}
.post-content blockquote p:last-child { margin-bottom: 0; }

/* pull quote — recessed card */
.pull {
  background: var(--sunk-deep);
  border-radius: 14px;
  padding: 1.9rem 2rem;
  margin: calc(var(--rhythm) * 1.6) 0;
  border: none;
}
.pull p {
  font-family: "Newsreader", Georgia, serif;
  font-weight: 400;
  font-style: normal;
  font-size: var(--step-2);
  line-height: 1.34;
  margin: 0 0 .6rem;
  color: var(--ink);
}
.pull cite {
  font-style: normal;
  font-size: var(--step--1);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.pull cite::before { content: "— "; }

/* spotify / media embed */
.embed {
  margin: calc(var(--rhythm) * 1.4) 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--rule);
}
.embed iframe { display: block; width: 100%; border: 0; }

.meta {
  margin-top: calc(var(--rhythm) * 1.8);
  padding-top: var(--rhythm);
  border-top: 1px solid var(--rule);
  font-size: var(--step--1);
  color: var(--ink-soft);
}
.meta .c { color: var(--accent); font-weight: 700; }

/* site footer */
.foot {
  border-top: 1.5px solid var(--rule-strong);
  margin-top: calc(var(--rhythm) * 2);
  padding: var(--rhythm) 1.5rem;
  text-align: center;
  font-size: var(--step--1);
  color: var(--ink-soft);
}

@media (max-width: 600px) {
  :root { --step-0: 1.06rem; --step-3: 1.95rem; --step-4: 2.2rem; }
  .bar-inner { flex-direction: column; align-items: flex-start; gap: .5rem; padding: 1.1rem 1.5rem 1rem; }
  .brand { font-size: 1.95rem; }
  .entry { grid-template-columns: 3.2rem 1fr; gap: 1rem; row-gap: .15rem; }
  .entry-date { grid-column: 2; font-size: .72rem; }
  .pull { padding: 1.5rem 1.4rem; }
}

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }