/* ================================================================
   THE INNER GARDEN — shared design system for the gut-health funnel
   Trailhead Press · Book 05 · self-contained, funnel-scoped
   ================================================================ */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..900;1,9..144,300..700&family=Archivo:wght@300;400;500;600;700&family=Caveat:wght@500;600&display=swap');

:root{
  --soil:#241C15;
  --soil-2:#2F2419;
  --clay:#A85536;
  --terracotta:#C56B4A;
  --amber:#E4A15C;
  --cream:#F3E7D4;
  --cream-dim:#E6D6BC;
  --forest:#2F4A38;
  --forest-deep:#20362A;
  --moss:#7A9A6B;
  --ink:#1B140E;
  --serif:'Fraunces',Georgia,serif;
  --sans:'Archivo',system-ui,sans-serif;
  --hand:'Caveat',cursive;
  --maxw:1120px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--soil);
  color:var(--cream);
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
::selection{background:var(--terracotta);color:var(--cream)}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(1.25rem,5vw,3rem)}
.eyebrow{
  font-family:var(--sans);font-weight:600;letter-spacing:.32em;text-transform:uppercase;
  font-size:.72rem;color:var(--amber);display:inline-flex;align-items:center;gap:.7rem;
}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--amber);opacity:.7}
.hand{font-family:var(--hand);color:var(--moss);font-size:1.5rem;line-height:1.2}
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.04;letter-spacing:-.015em}
.display{font-size:clamp(2.9rem,8vw,6.4rem);font-weight:400}
.h2{font-size:clamp(2rem,5vw,3.6rem)}
.lede{font-size:clamp(1.1rem,2.1vw,1.45rem);color:var(--cream-dim);font-weight:300}
em,.it{font-style:italic}

/* --- buttons --- */
.btn{
  --bg:var(--terracotta);--fg:#fff;
  display:inline-flex;align-items:center;gap:.65rem;
  background:var(--bg);color:var(--fg);
  font-family:var(--sans);font-weight:600;font-size:1rem;letter-spacing:.01em;
  padding:1.05rem 1.9rem;border-radius:999px;border:none;cursor:pointer;
  text-decoration:none;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,background .3s;
  box-shadow:0 10px 30px -10px rgba(197,107,74,.6);
}
.btn:hover{transform:translateY(-3px);box-shadow:0 18px 40px -12px rgba(197,107,74,.75)}
.btn.ghost{background:transparent;color:var(--cream);border:1px solid rgba(243,231,212,.28);box-shadow:none}
.btn.ghost:hover{border-color:var(--amber);color:var(--amber)}
.btn .arrow{transition:transform .3s}
.btn:hover .arrow{transform:translateX(4px)}

/* --- reveal animation base (works even before JS) --- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s ease,transform 1s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

/* --- strata layout --- */
.strata{position:relative;padding:clamp(5rem,12vh,9rem) 0}
.stratum-label{
  position:absolute;top:2.2rem;right:clamp(1rem,4vw,3rem);
  writing-mode:vertical-rl;font-family:var(--hand);font-size:1.35rem;color:var(--moss);opacity:.6;
  letter-spacing:.05em;
}

/* --- cards --- */
.card{
  background:linear-gradient(160deg,rgba(243,231,212,.06),rgba(243,231,212,.02));
  border:1px solid rgba(243,231,212,.12);border-radius:20px;padding:1.8rem;
  backdrop-filter:blur(2px);
}

/* --- footer --- */
.foot{background:var(--ink);color:var(--cream-dim);padding:3.5rem 0 4rem;font-size:.9rem}
.foot a{color:var(--amber);text-decoration:none}
.foot a:hover{text-decoration:underline}
.disclaimer{font-size:.8rem;color:rgba(243,231,212,.5);max-width:60ch;margin-top:1.2rem;line-height:1.6}

/* --- lesson page shell --- */
.lesson-body{max-width:720px;margin-inline:auto}
.lesson-body p{margin:1.15rem 0;font-size:1.08rem;color:var(--cream-dim);font-weight:300}
.lesson-body h3{font-size:1.7rem;margin:2.6rem 0 .8rem;color:var(--cream)}
.lesson-body ul{margin:1rem 0 1.4rem 1.1rem;color:var(--cream-dim);font-weight:300}
.lesson-body li{margin:.5rem 0}
.lesson-body strong{color:var(--amber);font-weight:600}
.pull{
  font-family:var(--serif);font-style:italic;font-size:clamp(1.4rem,3vw,2rem);
  color:var(--moss);border-left:2px solid var(--terracotta);padding-left:1.4rem;margin:2.4rem 0;line-height:1.3;
}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}