/* Muse Playbook — reading-first minimal theme.
   Light: warm paper like musecases.app (#fafaf8). Dark: kept via toggle. */

:root {
  color-scheme: light;
  --bg: #fafaf8;
  --bg2: #ffffff;
  --ink: #202124;
  --muted: #64676c;
  --faint: #9a9da3;
  --line: #e4e4e0;
  --accent: #2563eb;
  --accent-soft: #e9f0fe;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Literata", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --radius: 12px;
}
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #17171a;
  --bg2: #1f1f23;
  --ink: #e9e7e2;
  --muted: #a3a099;
  --faint: #6f6d66;
  --line: #2d2d33;
  --accent: #6f9bff;
  --accent-soft: #222b45;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 660px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }

p a, li a { color: var(--accent); text-decoration: none; }
p a:hover, li a:hover { text-decoration: underline; }

/* ---------- header ---------- */
.nav {
  max-width: 760px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 8px;
  position: relative;
}
.brand {
  font-family: var(--serif); font-weight: 700; font-size: 1.15rem;
  color: var(--ink); text-decoration: none; margin-right: auto;
  white-space: nowrap;
}
.brand-mark { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: .92rem;
  padding: 8px 12px; border-radius: 8px; white-space: nowrap;
}
.nav-links a:hover { color: var(--ink); background: var(--accent-soft); }
.nav-links a.active { color: var(--ink); font-weight: 600; }
.nav-toggle {
  display: none; background: none; border: none; color: var(--ink);
  font-size: 1.3rem; cursor: pointer; padding: 6px 8px;
}
.theme-toggle {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  border-radius: 8px; width: 34px; height: 34px; flex: none;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
}
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle:hover { color: var(--ink); border-color: var(--faint); }

/* ---------- homepage: the list ---------- */
.list-intro { padding: 40px 0 4px; }
.list-intro h1 { font-size: 1.7rem; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 10px; }
.lede { color: var(--muted); font-size: 1rem; max-width: 62ch; }

.filter-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 6px; }
.filter-btn {
  font: inherit; font-size: .85rem; color: var(--muted);
  background: transparent; border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; cursor: pointer;
}
.filter-btn:hover { color: var(--ink); border-color: var(--faint); }
.filter-btn.active { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.sort-row { display: flex; align-items: center; gap: 8px; margin: 14px 0 4px; font-size: .85rem; color: var(--faint); }
.sort-btn { font: inherit; font-size: .85rem; color: var(--muted); background: transparent; border: none; cursor: pointer; padding: 2px 2px; }
.sort-btn:hover:not(:disabled) { color: var(--ink); }
.sort-btn.active { color: var(--accent); font-weight: 600; }
.sort-btn:disabled { opacity: .4; cursor: default; }
.sort-sep { opacity: .6; }

.case-list { padding: 6px 0 20px; }
.case { padding: 30px 0; }
.case + .case { border-top: 1px solid var(--line); }
.card-tag { font-size: .85rem; color: var(--muted); margin-bottom: 6px; }
.case h2 { font-size: 1.3rem; letter-spacing: -0.01em; line-height: 1.35; margin-bottom: 8px; }
.case > p { margin-bottom: 10px; }
.case > p strong { font-weight: 600; }
.case-source { font-size: .85rem; color: var(--faint); }

.prompt-block {
  position: relative;
  font-family: var(--serif); font-size: 1.06rem; line-height: 1.75;
  background: var(--bg2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; margin: 14px 0;
}
.prompt-block p { margin: 0; }
.copy-btn {
  position: absolute; top: 10px; right: 10px;
  font-family: var(--sans); font-size: .76rem; color: var(--muted);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
  padding: 4px 10px; cursor: pointer;
}
.copy-btn:hover { color: var(--ink); border-color: var(--faint); }
.copy-btn.done { color: var(--accent); border-color: var(--accent); }

.why { color: var(--muted); font-size: .95rem; }
.why strong { color: var(--ink); }

.reactions { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: .85rem; color: var(--faint); }
.reactions-label { margin-right: 2px; }
.react-btn {
  font: inherit; display: inline-flex; align-items: center; gap: 6px;
  color: var(--muted); background: transparent;
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; cursor: pointer;
}
.react-btn:hover:not(:disabled) { color: var(--ink); border-color: var(--faint); }
.react-btn:disabled { cursor: default; opacity: .55; }
.reactions-sm { margin-top: 10px; }

.real-user-divider { padding: 40px 0 6px; border-top: 1px solid var(--line); margin-top: 10px; }
.real-user-divider h2 { font-size: 1.3rem; margin: 6px 0 8px; }
.real-user-divider .muted { font-size: .95rem; }

/* ---------- generic sections (guide / prompts) ---------- */
.page-hero { padding: 44px 0 10px; }
.page-hero h1 { font-size: 1.7rem; letter-spacing: -0.02em; line-height: 1.25; margin-bottom: 10px; }
.eyebrow { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); margin-bottom: 8px; }
.section { padding: 34px 0; }
.section.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section h2 { font-size: 1.4rem; letter-spacing: -0.01em; margin-bottom: 10px; }
.section-sub { color: var(--muted); margin-bottom: 16px; max-width: 62ch; }

.cards { margin-top: 6px; }
.card { padding: 18px 0; border-top: 1px solid var(--line); }
.card-icon { font-size: 1.4rem; margin-bottom: 6px; }
.card h3 { font-size: 1.05rem; margin-bottom: 4px; }
.card p { color: var(--muted); font-size: .95rem; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 18px 0; }
.compare-bad, .compare-good { background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.compare h3 { font-size: 1rem; margin-bottom: 10px; }
.compare .muted { font-size: .9rem; margin-top: 10px; }

.faq details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--muted); margin-top: 8px; font-size: .95rem; }

.steps { display: flex; flex-direction: column; }
.steps.vertical .step { display: flex; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.step-n {
  flex: none; width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  font-weight: 700; font-size: .9rem;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { font-size: 1.05rem; margin-bottom: 4px; }
.step p, .step ul { color: var(--muted); font-size: .95rem; }
.step ul { padding-left: 20px; margin-top: 6px; }

.prompts { padding: 8px 0 24px; }
.prompt-group { margin-bottom: 40px; }
.prompt-group > h2 { font-size: 1.25rem; margin-bottom: 2px; }
.prompt-group > .muted { font-size: .92rem; margin-bottom: 6px; }
.prompt-title { font-weight: 600; margin: 20px 0 4px; font-size: 1rem; }

.note { color: var(--muted); font-size: .95rem; margin: 18px 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; font: inherit; font-size: .95rem; font-weight: 600;
  text-decoration: none; border-radius: 10px; padding: 10px 20px;
  cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.07); }
.btn-ghost { background: transparent; color: var(--accent); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); margin-top: 28px; }
.foot {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  padding-top: 20px; padding-bottom: 30px;
  font-size: .85rem; color: var(--muted);
}

/* ---------- mobile ---------- */
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: var(--bg2); border-bottom: 1px solid var(--line);
    padding: 8px 12px 12px; z-index: 10;
  }
  .nav-links.open { display: flex; }
  .compare { grid-template-columns: 1fr; }
  .list-intro { padding-top: 28px; }
  .case { padding: 24px 0; }
}

/* Sticky filter bar + search */
.filter-row { position: sticky; top: 0; z-index: 50; background: var(--bg); padding: 10px 0; border-bottom: 1px solid var(--line); }
.search-input { font: inherit; font-size: .85rem; color: var(--ink); background: var(--bg2); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; margin-left: auto; min-width: 170px; }
.search-input:focus { outline: none; border-color: var(--accent); }
.search-input::placeholder { color: var(--faint); }
.case h2 a.case-link { color: inherit; text-decoration: none; }
.case h2 a.case-link:hover { text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
.no-results { padding: 36px 0; text-align: center; }
/* Individual case pages */
.crumb { margin: 26px 0 6px; font-size: .9rem; }
.case-pager { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin: 30px 0; font-size: .92rem; }
.see-case { font-size: .85rem; margin: 10px 0 0; }
.see-case a { color: var(--accent); text-decoration: none; }
.see-case a:hover { text-decoration: underline; text-underline-offset: 3px; }