/* Cinematic layer — home page only (design/cinematic.js drives these states)
 * Everything here is presentation-only; content stays readable without JS.
 * Honors prefers-reduced-motion + ?still=1 (JS skips adding animated states). */

/* top scroll progress hairline */
#scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:0 50%;z-index:140;pointer-events:none}

/* masked line reveals for chapter titles */
.line-mask{display:inline-block;overflow:hidden;vertical-align:bottom;padding-bottom:.1em;margin-bottom:-.1em}
.line-inner{display:inline-block;will-change:transform}

/* ghost chapter numerals (CSS counter; zero HTML edits) */
body{counter-reset:chap}
.band[data-chapter]{position:relative;overflow:clip}
.band[data-chapter] .band-inner{position:relative;z-index:1}
.band[data-chapter]::after{counter-increment:chap;content:"0" counter(chap);position:absolute;right:-1vw;top:var(--s7);z-index:0;font-family:var(--font-display);font-weight:800;font-size:clamp(7rem,20vw,18rem);line-height:.9;letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px rgba(243,239,231,.09);pointer-events:none;user-select:none}
.band--cream[data-chapter]::after{-webkit-text-stroke-color:rgba(20,19,18,.08)}
#question::after{content:none} /* hero keeps clean grid */
@media (max-width:1100px){.band[data-chapter]::after{font-size:clamp(5rem,26vw,9rem);top:var(--s6)}}

/* hero scroll cue */
.hero{position:relative}
.scroll-cue{position:absolute;left:var(--s5);bottom:var(--s5);display:flex;align-items:center;gap:12px;transition:opacity var(--dur-2) var(--ease-out);pointer-events:none}
body.has-scrolled .scroll-cue{opacity:0}
.scroll-cue .sc-line{width:1px;height:44px;background:var(--rule-dark);position:relative;overflow:hidden}
.scroll-cue .sc-line::after{content:"";position:absolute;left:0;top:0;width:100%;height:16px;background:var(--amber);animation:cueDrop 1.8s var(--ease-in-out) infinite}
.scroll-cue .sc-label{font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.22em;text-transform:uppercase;color:var(--on-dark-dim);writing-mode:vertical-rl}
@keyframes cueDrop{0%{transform:translateY(-18px)}100%{transform:translateY(48px)}}
@media (prefers-reduced-motion:reduce){.scroll-cue .sc-line::after{animation:none}}
@media (max-width:900px){.scroll-cue{display:none}}

/* THE METHOD — pinned step-through */
#method .row{transition:opacity .35s var(--ease-out)}
#method .row .rn{transition:color .35s var(--ease-out)}
#method .row h3{transition:color .35s var(--ease-out)}
@media (min-width:1000px){
  #method .row{opacity:.32}
  #method .row.m-active{opacity:1}
  #method .row.m-active .rn{color:var(--amber)}
  #method .row.m-active h3{color:var(--on-dark)}
  #method .row.m-active{box-shadow:inset 2px 0 0 var(--amber)}
}

/* THE PROBLEM — stacked deck (white cards, branded glyphs, tighter dwell) */
#problem .deck{display:flex;flex-direction:column;gap:var(--s5);margin-top:var(--s6)}
#problem .deck .card{position:sticky;display:grid;grid-template-columns:110px minmax(0,.85fr) minmax(0,1.15fr);gap:var(--s6);align-items:center;padding:var(--s6) var(--s7);min-height:280px;background:var(--white);border-color:rgba(20,19,18,.16);box-shadow:0 -18px 44px rgba(20,19,18,.10);top:calc(96px + var(--i,0)*18px)}
#problem .deck .card:nth-child(1){--i:0}
#problem .deck .card:nth-child(2){--i:1}
#problem .deck .card:nth-child(3){--i:2}
#problem .deck .card:nth-child(4){--i:3}
#problem .deck .q-side{display:flex;flex-direction:column;align-items:flex-start;gap:var(--s4)}
#problem .deck .card .num{font-family:var(--font-display);font-weight:800;font-size:2.6rem;line-height:1;letter-spacing:-.03em;margin-bottom:0;color:transparent;-webkit-text-stroke:1.5px var(--amber)}
#problem .deck .q-icon{width:46px;height:46px;color:var(--amber-ink)}
#problem .deck .q-icon svg{width:100%;height:100%;display:block}
#problem .deck .card h3{font-size:clamp(1.35rem,2.2vw,1.8rem)}
#problem .deck .card p{font-size:var(--text-body)}
@media (max-width:700px){
  #problem .deck .card{grid-template-columns:1fr;gap:var(--s3);min-height:0;padding:var(--s5);top:calc(80px + var(--i,0)*12px)}
  #problem .deck .q-side{flex-direction:row;align-items:center;gap:var(--s4)}
  #problem .deck .card .num{font-size:2rem}
}

/* THE SHOW — YouTube channel promotion */
.channel-strip{display:flex;align-items:center;gap:var(--s5);background:var(--white);border:1px solid rgba(20,19,18,.16);border-radius:var(--radius-card);padding:var(--s5) var(--s6);margin-top:var(--s6);text-decoration:none;color:inherit;transition:transform var(--dur-1) var(--ease-out),box-shadow var(--dur-2) var(--ease-out)}
.channel-strip:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(20,19,18,.12)}
.channel-strip .yt-ic{width:52px;height:52px;flex:none;display:flex;align-items:center;justify-content:center}
.channel-strip .yt-ic svg{width:100%;height:100%;display:block}
.channel-strip .ch-meta{display:flex;flex-direction:column;gap:4px;min-width:0}
.channel-strip .ch-meta strong{font-size:var(--text-body-l);font-weight:700;letter-spacing:-.01em}
.channel-strip .ch-meta span{font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--on-light-mut)}
.channel-strip .ch-cta{margin-left:auto;font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.14em;text-transform:uppercase;color:var(--amber-ink);border:1px solid var(--amber);border-radius:var(--radius-pill);padding:12px 22px;white-space:nowrap}
@media (max-width:700px){.channel-strip{flex-wrap:wrap}.channel-strip .ch-cta{margin-left:0}}
.yt-corner{position:absolute;top:10px;right:10px;width:26px;height:26px;pointer-events:none;filter:drop-shadow(0 1px 4px rgba(0,0,0,.35))}
.yt-corner svg{width:100%;height:100%;display:block}
.btn .btn-ic{width:17px;height:17px;flex:none;display:inline-flex}
.btn .btn-ic svg{width:100%;height:100%;display:block}

/* offers entrance handled by JS; featured tier gets a quiet glow while pinned in view */
.tier.featured{box-shadow:0 18px 50px rgba(232,163,61,.10)}