/* ============================================================
   Life, 20–30 — shared styles
   A calm, modern, "tending a garden" visual language.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600&family=Caveat:wght@500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg: #eeece3;
  --bg-soft: #f5f3ec;
  --surface: #faf9f3;
  --surface-line: #e2ded1;
  --ink: #2b2b25;
  --ink-soft: #6f6d5f;
  --ink-faint: #a6a394;
  --moss: #5c6e4f;
  --moss-deep: #3f4f36;
  --moss-tint: #e7ebe0;
  --shadow: 0 1px 2px rgba(43,43,37,0.04), 0 8px 24px rgba(43,43,37,0.05);
  --radius: 18px;
  --radius-sm: 10px;
  --max: 760px;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --hand: "Caveat", cursive;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

::selection{ background:var(--moss-tint); color:var(--moss-deep); }

a{ color:var(--moss-deep); text-decoration-color: rgba(92,110,79,0.35); text-underline-offset:3px; }
a:hover{ text-decoration-color: var(--moss-deep); }

:focus-visible{
  outline: 2px solid var(--moss);
  outline-offset: 3px;
  border-radius: 4px;
}

strong{ color:var(--ink); font-weight:600; }

/* ---------- progress line ---------- */
.progress{
  position:fixed; top:0; left:0; height:3px; width:0%;
  background:var(--moss);
  z-index:60;
  transition:width 0.1s linear;
}

/* ---------- top bar ---------- */
.topbar{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding: 16px 24px;
  background: rgba(238,236,227,0.86);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--surface-line);
}
.topbar__mark{
  font-family:var(--mono); font-size:13px; letter-spacing:0.06em;
  color:var(--ink-soft); text-decoration:none;
  display:flex; align-items:center; gap:8px;
}
.topbar__mark:hover{ color: var(--moss-deep); }
.topbar__link{
  font-family:var(--sans); font-size:14px; font-weight:500;
  color:var(--ink); text-decoration:none;
  display:flex; align-items:center; gap:6px;
}
.topbar__link:hover{ color:var(--moss-deep); }

/* ---------- hero ---------- */
.hero{
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px 24px 32px;
}
.hero__eyebrow{
  font-family:var(--mono); font-size:12px; letter-spacing:0.12em; text-transform:uppercase;
  color:var(--moss-deep); margin:0 0 18px;
}
.hero__title{
  font-family:var(--serif);
  font-optical-sizing:auto;
  font-weight:500;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height:1.03;
  margin:0 0 18px;
  color:var(--ink);
}
.hero__title em{ font-style:italic; color:var(--moss-deep); }
.hero__sub{
  font-family:var(--hand);
  font-size: 1.5rem;
  color:var(--ink-soft);
  margin: 0 0 8px;
  max-width: 30ch;
}
.hero__note{
  font-size:15px; color:var(--ink-soft); max-width:52ch; margin: 14px 0 0;
}

/* brushstroke divider — the one signature flourish */
.brush{
  display:block; width:180px; height:18px; margin: 28px 0;
  color: var(--moss);
}
.brush path{
  fill:none; stroke:currentColor; stroke-width:3; stroke-linecap:round;
  stroke-dasharray: 260; stroke-dashoffset: 260;
  transition: stroke-dashoffset 1.1s ease;
}
.brush.in-view path{ stroke-dashoffset:0; }

.breath{
  width: 54px; height:54px; border-radius:50%;
  border:1.5px solid var(--moss);
  opacity:0.55;
  animation: breathe 5.5s ease-in-out infinite;
  margin-top: 6px;
}
@keyframes breathe{
  0%,100%{ transform:scale(0.86); opacity:0.35; }
  50%{ transform:scale(1); opacity:0.65; }
}

/* ---------- quick-jump nav ---------- */
.jumpnav{
  position:sticky; top:57px; z-index:40;
  background: rgba(238,236,227,0.92);
  backdrop-filter: blur(8px);
  border-bottom:1px solid var(--surface-line);
  padding: 12px 24px;
}
.jumpnav__row{
  max-width: var(--max); margin:0 auto;
  display:flex; align-items:center; gap:10px;
  overflow-x:auto;
  scrollbar-width:none;
}
.jumpnav__row::-webkit-scrollbar{ display:none; }
.jumpnav__dot{
  flex: 0 0 auto;
  width:30px; height:30px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:11px; color:var(--ink-soft);
  border:1px solid var(--surface-line);
  background:var(--surface);
  text-decoration:none;
  transition: all 0.2s ease;
}
.jumpnav__dot:hover{ border-color:var(--moss); color:var(--moss-deep); }
.jumpnav__dot.active{
  background:var(--moss); border-color:var(--moss); color:#fff;
}
.jumpnav__spacer{ flex:1 1 auto; }
.jumpnav__mode{
  flex:0 0 auto;
  display:flex; gap:2px; padding:3px;
  background:var(--surface); border:1px solid var(--surface-line); border-radius:999px;
}
.jumpnav__mode button{
  font-family:var(--sans); font-size:12.5px; font-weight:500;
  padding:6px 13px; border-radius:999px; border:none; background:transparent;
  color:var(--ink-soft); cursor:pointer;
}
.jumpnav__mode button.active{ background:var(--moss); color:#fff; }

/* ---------- rules list ---------- */
.rules{
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 24px 40px;
  display:grid;
  gap: 18px;
}
body.mode-quick .rules{ grid-template-columns: 1fr; gap:12px; }

.rule{
  background:var(--surface);
  border:1px solid var(--surface-line);
  border-radius:var(--radius);
  padding: 26px 26px 24px;
  box-shadow: var(--shadow);
  scroll-margin-top: 130px;
}
body.mode-quick .rule{ padding: 16px 20px; }

.rule__head{
  display:flex; align-items:baseline; gap:14px; margin-bottom: 10px;
}
.rule__num{
  font-family:var(--mono); font-size:13px; color:var(--ink-faint);
  letter-spacing:0.04em;
}
.rule__badge{
  font-family:var(--serif); font-weight:500; font-style:italic;
  font-size:1.05rem; color:var(--moss-deep);
}

.rule__full{ display:block; }
.rule__quick{ display:none; }
body.mode-quick .rule__full{ display:none; }
body.mode-quick .rule__quick{ display:block; }

.rule p{ margin: 0 0 12px; color:var(--ink); }
.rule p:last-child{ margin-bottom:0; }

.rule__quick p{
  font-family:var(--serif); font-size:1.05rem; font-style:italic;
  color:var(--ink); margin:0;
}

/* nested "field note" accordion */
.note{
  margin-top: 14px;
  border-top: 1px dashed var(--surface-line);
  padding-top: 12px;
}
.note__toggle{
  font-family:var(--hand); font-size:1.15rem;
  color:var(--moss-deep); background:none; border:none; cursor:pointer;
  padding:0; display:flex; align-items:center; gap:6px;
}
.note__toggle::before{ content:"🌱"; font-size:0.95rem; }
.note__toggle[aria-expanded="true"] .note__chevron{ transform:rotate(90deg); }
.note__chevron{ display:inline-block; transition:transform 0.2s ease; font-family:var(--sans); font-size:12px; color:var(--ink-faint); }
.note__body{
  overflow:hidden; max-height:0; transition:max-height 0.35s ease;
  font-size:14.5px; color:var(--ink-soft);
}
.note__body.open{ max-height: 900px; }
.note__body-inner{ padding-top:12px; }
.note__body-inner p{ margin:0 0 10px; }
.note__body-inner blockquote{
  margin:12px 0; padding: 4px 0 4px 14px;
  border-left: 2px solid var(--moss);
  font-family:var(--serif); font-style:italic; color:var(--ink);
}
.note__body-inner ul{ margin:8px 0; padding-left:20px; }
.note__body-inner li{ margin-bottom:4px; }

/* ---------- chapter heading (used within a page for sub-sections) ---------- */
.chapter{
  max-width: var(--max); margin: 44px auto 0; padding: 0 24px;
}
.chapter__title{
  font-family:var(--serif); font-size:1.7rem; font-weight:500; margin:0 0 6px;
}
.chapter__desc{ color:var(--ink-soft); font-size:14.5px; max-width:56ch; margin:0; }

/* ---------- footer ---------- */
.footer{
  max-width: var(--max); margin:0 auto; padding: 20px 24px 100px;
}
.footer__quote{
  font-family:var(--serif); font-style:italic; font-size:1.3rem;
  color:var(--ink); margin: 0 0 22px; max-width:44ch;
}
.footer__nav{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px;
  padding-top:18px; border-top:1px solid var(--surface-line);
}
.footer__cta{
  font-family:var(--sans); font-weight:500; font-size:15px;
  color:var(--moss-deep); text-decoration:none;
  display:inline-flex; align-items:center; gap:6px;
}
.footer__credit{ font-family:var(--mono); font-size:12px; color:var(--ink-faint); }

/* ---------- floating random button ---------- */
.fab{
  position:fixed; right:20px; bottom:20px; z-index:55;
  display:flex; align-items:center; gap:8px;
  background:var(--moss); color:#fff;
  border:none; border-radius:999px;
  padding:13px 18px;
  font-family:var(--sans); font-weight:500; font-size:14px;
  cursor:pointer;
  box-shadow: 0 6px 20px rgba(63,79,54,0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.fab:hover{ transform: translateY(-2px); box-shadow: 0 10px 26px rgba(63,79,54,0.34); }
.fab:active{ transform: translateY(0); }

/* flash highlight when a random rule is surfaced */
@keyframes settle{
  0%{ box-shadow: 0 0 0 0 rgba(92,110,79,0.35); }
  100%{ box-shadow: 0 0 0 14px rgba(92,110,79,0); }
}
.rule.flash{ animation: settle 1.4s ease-out; border-color: var(--moss); }

/* ---------- lessons page specifics ---------- */
.lessons{
  max-width: var(--max); margin:0 auto; padding: 8px 24px 60px;
  display:flex; flex-direction:column; gap:10px;
}
.lesson{
  display:flex; gap:16px; align-items:flex-start;
  background:var(--surface); border:1px solid var(--surface-line);
  border-radius:var(--radius-sm); padding:16px 18px;
}
.lesson__num{
  font-family:var(--mono); font-size:12px; color:var(--ink-faint);
  padding-top:3px; flex:0 0 24px;
}
.lesson__body p{ margin:0; }
.lesson__body{ flex:1 1 auto; }

/* ---------- responsive ---------- */
@media (max-width: 640px){
  .topbar{ padding:14px 18px; }
  .hero{ padding:52px 18px 24px; }
  .jumpnav{ padding:10px 18px; }
  .rules{ padding:16px 18px 36px; }
  .rule{ padding:20px 18px; }
  .footer{ padding:16px 18px 96px; }
  .lessons{ padding:6px 18px 50px; }
}