/* ============ AutoBooks — Astra AI ============ */
:root{
  --ink:#0c0c0c;
  --ink-2:#141312;
  --card:#17150f;
  --cream:#F6ECDD;
  --cream-dim:#e9ddc9;
  --dim:#a89d8c;
  --red:#F43F3F;
  --green:#5fcf80;
  --amber:#FFB46B;
  --line:rgba(255,255,255,.08);
  --line-dark:rgba(12,12,12,.12);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',system-ui,sans-serif;
  background:var(--ink);color:var(--cream);
  line-height:1.55;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
em{font-family:'Playfair Display',serif;font-style:italic;font-weight:600;color:var(--red)}
.eyebrow{font-size:.74rem;letter-spacing:.3em;text-transform:uppercase;font-weight:700;color:var(--red);margin-bottom:1.1rem}
.eyebrow--dark{color:var(--red)}
.eyebrow--light{color:var(--amber)}
section{position:relative}
h1{font-size:clamp(2.6rem,7vw,5rem);font-weight:900;line-height:1;letter-spacing:-.03em}
h2{font-size:clamp(1.9rem,4.6vw,3.2rem);font-weight:800;line-height:1.05;letter-spacing:-.02em}
h3{font-weight:700;letter-spacing:-.01em}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.92rem;letter-spacing:.01em;
  padding:.78rem 1.4rem;cursor:pointer;border:1px solid transparent;
  transition:transform .25s cubic-bezier(.2,.7,.2,1),background .25s,color .25s,border-color .25s;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.btn--sm{padding:.55rem 1rem;font-size:.85rem}
.btn--lg{padding:1rem 1.8rem;font-size:1rem}
.btn--solid{background:var(--red);color:#fff}
.btn--solid:hover{transform:translateY(-2px);background:#ff5454}
.btn--solid:disabled{opacity:.5;cursor:wait;transform:none}
.btn--ghost{background:transparent;color:var(--cream);border-color:rgba(246,236,221,.3)}
.btn--ghost:hover{transform:translateY(-2px);border-color:var(--cream);background:rgba(246,236,221,.06)}

/* ---- nav ---- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.05rem clamp(1.1rem,4vw,2.6rem);
  transition:background .4s,backdrop-filter .4s,border-color .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:rgba(12,12,12,.82);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav__brand{display:flex;flex-direction:row;align-items:center;gap:.55rem;line-height:1}
.nav__icon{display:flex}
.nav__brandtext{display:flex;flex-direction:column;line-height:1}
.nav__mark{font-weight:900;letter-spacing:.16em;font-size:1.1rem}
.nav__by{font-size:.6rem;letter-spacing:.22em;color:var(--cream-dim);opacity:.65;margin-top:.26rem;text-transform:uppercase}
.nav__links{display:flex;gap:1.7rem;font-size:.9rem;font-weight:500}
.nav__links a{opacity:.82;transition:opacity .2s}
.nav__links a:hover{opacity:1}
.nav__cta{display:flex;gap:.6rem}
.nav__burger{display:none;background:none;border:0;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav__burger span{width:24px;height:2px;background:var(--cream);display:block}

/* ---- hero ---- */
.hero{min-height:100svh;display:flex;align-items:center;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.06)}
.hero__scrim{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(12,12,12,.95) 0%,rgba(12,12,12,.78) 38%,rgba(12,12,12,.28) 72%,rgba(12,12,12,.5) 100%);}
.hero__inner{position:relative;z-index:2;max-width:var(--maxw);width:100%;margin:0 auto;padding:0 clamp(1.1rem,4vw,2.6rem)}
.hero__h1{font-size:clamp(2.7rem,7.2vw,5.6rem);font-weight:900;line-height:.98;letter-spacing:-.03em;margin:.4rem 0 1.4rem}
.hero__h1 span{display:block;overflow:hidden}
.hero__sub{max-width:36rem;font-size:clamp(1rem,1.6vw,1.2rem);color:var(--cream-dim);margin-bottom:2rem}
.hero__actions{display:flex;gap:.9rem;flex-wrap:wrap;margin-bottom:1.5rem}
.hero__trust{font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cream-dim);opacity:.7}
.hero__cue{position:absolute;bottom:1.7rem;left:50%;translate:-50% 0;z-index:2;display:flex;flex-direction:column;align-items:center;gap:.5rem;font-size:.64rem;letter-spacing:.28em;text-transform:uppercase;opacity:.55}
.hero__cue i{width:1px;height:38px;background:linear-gradient(var(--cream),transparent);animation:cue 2.2s ease-in-out infinite}
@keyframes cue{0%,100%{opacity:.2;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* ---- stakes ---- */
.stakes{background:var(--cream);color:var(--ink);padding:clamp(4rem,9vw,7rem) clamp(1.1rem,4vw,2.6rem)}
.stakes__lead{max-width:var(--maxw);margin:0 auto;text-align:center}
.stakes__lead p{font-size:clamp(1.7rem,4.4vw,3rem);font-weight:800;line-height:1.1;letter-spacing:-.02em;max-width:22ch;margin:0 auto}
.stakes__lead em{color:var(--red)}
.stakes__sub{margin-top:.8rem!important;color:#5b524a;font-size:clamp(1rem,1.6vw,1.2rem)!important;font-weight:500!important}
.stakes__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;max-width:var(--maxw);margin:3.4rem auto 0}
.stakes__cell{background:#fff;border:1px solid var(--line-dark);padding:1.9rem 1.6rem;
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px)}
.stakes__no{font-family:'IBM Plex Mono',monospace;color:var(--red);font-size:.9rem;letter-spacing:.1em}
.stakes__cell h3{font-size:1.3rem;margin:.5rem 0 .6rem;color:var(--ink)}
.stakes__cell p{color:#5b524a;font-size:.97rem}
.stakes__turn{max-width:42rem;margin:3rem auto 0;text-align:center;font-size:clamp(1.1rem,2vw,1.4rem);font-weight:600;color:var(--ink);line-height:1.4}

/* ---- tool ---- */
.tool{max-width:920px;margin:0 auto;padding:clamp(3.5rem,7vw,5.5rem) clamp(1.1rem,4vw,2.4rem)}
.tool__head{max-width:42rem;margin:0 auto 2.2rem;text-align:center}
.tool__head em{color:var(--red)}
.tool__lead{color:var(--dim);margin-top:1rem;font-size:1.05rem}
.tool__in{background:var(--ink-2);border:1px solid var(--line);clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px)}
.tool__bar{display:flex;align-items:center;gap:.45rem;padding:.7rem 1rem;border-bottom:1px solid var(--line)}
.tool__bar .dot{width:10px;height:10px;border-radius:50%;background:#2c2a24}
.tool__label{margin-left:.6rem;font-family:'IBM Plex Mono',monospace;font-size:.74rem;letter-spacing:.1em;color:var(--dim);text-transform:uppercase}
#claimText{width:100%;min-height:230px;resize:vertical;background:transparent;border:0;outline:none;color:var(--cream);font-family:'IBM Plex Mono',monospace;font-size:.92rem;line-height:1.6;padding:1.2rem}
#claimText::placeholder{color:#5c554a}
.tool__actions{display:flex;align-items:center;gap:1rem;padding:1rem;border-top:1px solid var(--line);flex-wrap:wrap}
.tool__msg{font-size:.9rem;color:var(--dim)}
.tool__msg.err{color:var(--red)}
.tool__disc{margin-top:1.4rem;color:#6b6259;font-size:.82rem;text-align:center;max-width:54rem;margin-inline:auto}

/* ---- results (used by main.js render) ---- */
.tool__out{margin-top:1.4rem;background:var(--card);border:1px solid var(--line);padding:clamp(1.2rem,3vw,2rem);
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px)}
.r-head{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:1rem;margin-bottom:1.2rem}
.r-head h3{font-size:1.4rem;font-weight:800}
.r-model{font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--dim);letter-spacing:.06em}
.r-section{margin-top:1.3rem}
.r-section h4{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--amber);margin-bottom:.7rem}
.r-items{width:100%;border-collapse:collapse;font-size:.92rem}
.r-items td{padding:.5rem .4rem;border-bottom:1px solid var(--line)}
.r-items td:last-child{text-align:right;font-family:'IBM Plex Mono',monospace}
.chip{font-size:.78rem;padding:.25rem .6rem;border:1px solid var(--line);border-radius:2px;white-space:nowrap}
.r-gaps{list-style:none;display:flex;flex-direction:column;gap:.6rem}
.r-gaps li{padding-left:1.4rem;position:relative;color:var(--cream);font-size:.96rem;line-height:1.5}
.r-gaps li::before{content:"!";position:absolute;left:0;top:0;width:18px;height:18px;display:grid;place-items:center;background:rgba(244,63,63,.15);color:var(--red);font-weight:800;font-size:.7rem;border-radius:3px}
.r-actions{margin-top:1.4rem;display:flex;gap:.7rem}
/* perf row (income/expense/net) */
.q-perf,.sample__perf{display:grid;grid-template-columns:repeat(3,1fr);gap:.9rem;margin-bottom:1.4rem}
.q-pcell,.sample__pcell{display:flex;flex-direction:column;gap:.35rem;padding:1.1rem 1.2rem;background:var(--ink-2);border:1px solid var(--line);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px)}
.q-pk,.sample__pk{font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)}
.q-pv,.sample__pv{font-family:'IBM Plex Mono',monospace;font-size:1.5rem;font-weight:500}
.pos{color:var(--green)!important}.neg{color:#ff6b6b!important}
.spin{display:inline-block;width:15px;height:15px;border:2px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite;vertical-align:-2px;margin-right:.5rem}
@keyframes sp{to{transform:rotate(360deg)}}
/* category bars */
.ab-cats{display:flex;flex-direction:column;gap:.6rem}
.ab-cat{display:grid;grid-template-columns:140px 1fr 110px;align-items:center;gap:.8rem}
.ab-cl{font-size:.9rem;color:var(--cream)}
.ab-cbar{height:8px;background:#221f1a;border-radius:4px;overflow:hidden}
.ab-cbar i{display:block;height:100%;background:linear-gradient(90deg,var(--red),var(--amber))}
.ab-cv{font-family:'IBM Plex Mono',monospace;font-size:.85rem;text-align:right;color:var(--dim)}
.ab-tx td{font-size:.9rem}
.ab-tx .ab-d{font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--dim);white-space:nowrap}
.ab-tx td:last-child{text-align:right;font-family:'IBM Plex Mono',monospace}

/* ---- how (pinned) ---- */
.how{background:var(--ink-2);border-top:1px solid var(--line)}
.how__pin{min-height:100svh;display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,5rem);
  align-items:center;max-width:var(--maxw);margin:0 auto;padding:clamp(3rem,7vw,6rem) clamp(1.1rem,4vw,2.6rem)}
.how__head{grid-column:1 / -1;margin-bottom:1rem}
.how__head h2{max-width:18ch}
.how__head em{color:var(--red)}
.how__steps{position:relative}
.how__step{padding:1.6rem 0;border-top:1px solid var(--line);opacity:.32;transition:opacity .5s}
.how__step:last-child{border-bottom:1px solid var(--line)}
.how__step.is-active{opacity:1}
.how__no{font-family:'IBM Plex Mono',monospace;color:var(--red);font-size:.9rem;letter-spacing:.1em}
.how__step h3{font-size:clamp(1.3rem,2.6vw,1.85rem);margin:.5rem 0 .6rem}
.how__step p{color:var(--cream-dim);max-width:46ch}
.how__media{position:relative}
.how__mock{background:#0a0a0a;border:1px solid var(--line);overflow:hidden;
  clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px)}
.hm__bar{display:flex;gap:.4rem;padding:.7rem .9rem;border-bottom:1px solid var(--line)}
.hm__bar .dot{width:9px;height:9px;border-radius:50%;background:#2c2a24}
.hm__body{padding:1.1rem 1.2rem;display:flex;flex-direction:column;gap:.55rem}
.hm__row{display:grid;grid-template-columns:auto 1fr auto auto;gap:.7rem;align-items:center;font-size:.82rem}
.hm__d{font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--dim)}
.hm__t{font-weight:600;color:var(--cream)}
.hm__c{font-size:.66rem;letter-spacing:.04em;padding:.2rem .55rem;border:1px solid var(--line);color:var(--dim);text-transform:uppercase}
.hm__c--rev{color:var(--amber);border-color:rgba(255,180,107,.3)}
.hm__a{font-family:'IBM Plex Mono',monospace;font-size:.82rem;text-align:right}
.hm__a--pos{color:var(--green)}.hm__a--neg{color:#ff6b6b}
.hm__flag{margin-top:.4rem;font-size:.78rem;color:var(--amber);padding:.5rem .7rem;background:rgba(255,180,107,.08);border-left:2px solid var(--amber)}
.how__progress{position:absolute;left:0;bottom:0;height:4px;width:100%;background:rgba(255,255,255,.1)}
.how__progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red),var(--amber))}

/* ---- features ---- */
.features{padding:clamp(4rem,9vw,7rem) clamp(1.1rem,4vw,2.6rem);max-width:var(--maxw);margin:0 auto}
.features__head{max-width:46rem;margin-bottom:3rem}
.features__sub{color:var(--cream-dim);margin-top:1rem;font-size:1.08rem}
.features__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.card{background:var(--ink-2);border:1px solid var(--line);padding:1.7rem 1.5rem;min-height:210px;
  display:flex;flex-direction:column;
  clip-path:polygon(16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%,0 16px);
  transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s,background .35s}
.card:hover{transform:translateY(-6px);border-color:rgba(244,63,63,.4);background:#181614}
.card__tag{font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--amber);margin-bottom:auto}
.card h3{font-size:1.3rem;margin:1.3rem 0 .55rem}
.card p{color:var(--cream-dim);font-size:.94rem}

/* ---- who ---- */
.who{background:var(--cream);color:var(--ink);padding:clamp(4rem,9vw,7rem) clamp(1.1rem,4vw,2.6rem)}
.who__head{max-width:var(--maxw);margin:0 auto 2.6rem}
.who .eyebrow--light{color:var(--red)}
.who__head h2{color:var(--ink)}
.who__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.4rem;max-width:var(--maxw);margin:0 auto}
.who__cell{background:#fff;border:1px solid var(--line-dark);padding:2rem 1.8rem;
  clip-path:polygon(16px 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%,0 16px)}
.who__role{font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--red);font-weight:700}
.who__cell h3{font-size:1.5rem;margin:.7rem 0 .6rem;color:var(--ink)}
.who__cell p{color:#5b524a;font-size:1rem}

/* ---- sample ---- */
.sample{padding:clamp(4rem,9vw,7rem) clamp(1.1rem,4vw,2.6rem);max-width:920px;margin:0 auto}
.sample__head{max-width:44rem;margin:0 auto 2.4rem;text-align:center}
.sample__head em{color:var(--red)}
.sample__sub{color:var(--cream-dim);margin-top:1rem;font-size:1.05rem}
.sample__card{background:var(--card);border:1px solid var(--line);padding:clamp(1.4rem,3vw,2.2rem);
  clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px)}
.sample__section{margin-top:1.6rem}
.sample__section h4{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--amber);margin-bottom:.8rem}
.sample__note{margin-top:1.6rem;padding-top:1.2rem;border-top:1px solid var(--line);font-size:.78rem;color:#6b6259;text-align:center}

/* ---- why ---- */
.why{background:var(--ink-2);padding:clamp(4.5rem,10vw,8rem) clamp(1.1rem,4vw,2.6rem);border-top:1px solid var(--line);text-align:center}
.why__inner{max-width:52rem;margin:0 auto}
.why__icon{display:inline-flex;margin-bottom:1.3rem}
.why__inner h2 em{color:var(--amber)}
.why__lead{color:var(--cream-dim);font-size:1.12rem;margin:1.1rem auto 2.6rem;max-width:46rem}
.why__points{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;text-align:left}
.why__point{border-left:2px solid var(--red);padding-left:1.1rem}
.why__point h3{font-size:1.12rem;margin-bottom:.4rem}
.why__point p{color:var(--cream-dim);font-size:.94rem}
.why__patent{margin-top:2.4rem;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}

/* ---- faq ---- */
.faq{background:var(--cream);color:var(--ink);padding:clamp(4rem,9vw,7rem) clamp(1.1rem,4vw,2.6rem)}
.faq__head{max-width:var(--maxw);margin:0 auto 2.2rem}
.faq__head h2{color:var(--ink)}
.faq__list{max-width:760px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--line-dark)}
.faq__item summary{cursor:pointer;list-style:none;padding:1.25rem 0;font-weight:700;font-size:1.1rem;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";color:var(--red);font-weight:400;font-size:1.6rem;line-height:1;transition:transform .3s}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item p{padding:0 0 1.4rem;color:#5b524a;max-width:64ch;font-size:1rem}
.faq__item em{color:var(--red)}

/* ---- final ---- */
.final{text-align:center;padding:clamp(5rem,11vw,9rem) clamp(1.1rem,4vw,2.6rem);background:var(--ink);
  background-image:radial-gradient(circle at 50% 0%,rgba(244,63,63,.12),transparent 60%)}
.final__inner{max-width:42rem;margin:0 auto}
.final h2{margin-bottom:1.1rem;max-width:20ch;margin-inline:auto}
.final p{color:var(--cream-dim);font-size:1.12rem;margin-bottom:2rem}
.final__actions{display:flex;gap:.9rem;justify-content:center;flex-wrap:wrap}

/* ---- footer ---- */
.foot{background:#070707;padding:clamp(3rem,6vw,4.5rem) clamp(1.1rem,4vw,2.6rem) 2.5rem;border-top:1px solid var(--line)}
.foot__top{display:flex;justify-content:space-between;align-items:flex-start;gap:2rem;flex-wrap:wrap;max-width:var(--maxw);margin:0 auto 2rem}
.foot__brand{display:flex;align-items:center;gap:.55rem}
.foot__links{display:flex;gap:1.6rem;flex-wrap:wrap;font-size:.9rem;color:var(--cream-dim)}
.foot__legal{max-width:var(--maxw);margin:0 auto 1rem;font-size:.74rem;line-height:1.6;color:#6b6259}
.foot__copy{max-width:var(--maxw);margin:1.4rem auto 0;font-size:.8rem;color:#6b6259}

/* ---- sticky mobile CTA ---- */
.mcta{position:fixed;left:0;right:0;bottom:0;z-index:45;display:none;gap:.55rem;padding:.65rem;background:rgba(12,12,12,.93);backdrop-filter:blur(12px);border-top:1px solid var(--line);transform:translateY(120%);transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.mcta.show{transform:none}
.mcta .btn{flex:1;padding:.85rem 1rem}

section[id]{scroll-margin-top:80px}

/* ---- reveal ---- */
.reveal,.reveal-line{will-change:transform,opacity}

/* ---- responsive ---- */
@media(max-width:900px){
  .nav__links,.nav__cta{display:none}
  .nav__burger{display:flex}
  .nav.open .nav__links{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:1.2rem;
    padding:1.4rem clamp(1.1rem,4vw,2.6rem);background:rgba(12,12,12,.97);border-bottom:1px solid var(--line)}
  .how__pin{grid-template-columns:1fr}
  .how__media{order:-1}
  .features__grid{grid-template-columns:1fr 1fr}
  .why__points{grid-template-columns:1fr;text-align:left}
}
@media(max-width:680px){
  .stakes__grid{grid-template-columns:1fr}
  .features__grid{grid-template-columns:1fr}
  .who__grid{grid-template-columns:1fr}
  .ab-cat{grid-template-columns:100px 1fr 90px}
  .q-perf,.sample__perf{grid-template-columns:1fr}
  .hm__row{grid-template-columns:1fr auto;gap:.4rem}
  .hm__d,.hm__c{display:none}
  .mcta{display:flex}
}

/* ---- reduced motion ---- */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal,.reveal-line{opacity:1!important;transform:none!important}
  .hero__bg img{transform:none}
}