/* ============================================================
   Aria Labs — landing
   Estrategia de color: Committed. Ink cálido + ámbar fundido.
   Referencia deliberada: panel de instrumento de precisión,
   NO el reflejo "AI agency = dark + neón violeta".
   ============================================================ */
:root{
  --ink:      oklch(0.165 0.014 66);
  --ink-1:    oklch(0.205 0.016 66);
  --ink-2:    oklch(0.245 0.016 66);
  --line:     oklch(0.32 0.014 66);
  --line-soft:oklch(0.27 0.012 66);
  --paper:    oklch(0.945 0.013 78);
  --paper-ink:oklch(0.24 0.02 60);

  --text:     oklch(0.94 0.008 80);
  --text-dim: oklch(0.74 0.012 74);
  --text-mut: oklch(0.58 0.012 70);

  --amber:    oklch(0.81 0.155 70);
  --amber-hi: oklch(0.87 0.14 78);
  --amber-lo: oklch(0.70 0.15 60);
  --on-amber: oklch(0.20 0.04 60);

  --max: 1180px;
  --r: 14px;
  --ease: cubic-bezier(.16,1,.3,1);
  --font-d: "Bricolage Grotesque", system-ui, sans-serif;
  --font-b: "Hanken Grotesk", system-ui, sans-serif;
  --font-m: "JetBrains Mono", ui-monospace, monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);color:var(--text);
  font-family:var(--font-b);font-size:clamp(1rem,.96rem + .2vw,1.1rem);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
em{font-style:normal;color:var(--amber)}
.hl{color:var(--amber)}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- NAV ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(20px,5vw,56px);
  transition:background .4s var(--ease),border-color .4s var(--ease),padding .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:color-mix(in oklch,var(--ink) 82%,transparent);backdrop-filter:blur(12px);border-bottom-color:var(--line-soft);padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-d);font-weight:700;font-size:1.22rem;letter-spacing:-.02em}
.brand-logo{height:30px;width:auto;display:block}
.brand-name span{color:var(--amber)}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2.4vw,34px);font-size:.96rem}
.nav-links a:not(.nav-cta){color:var(--text-dim);transition:color .25s}
.nav-links a:not(.nav-cta):hover{color:var(--text)}
.nav-cta{background:var(--amber);color:var(--on-amber);font-weight:600;padding:10px 18px;border-radius:100px;transition:transform .3s var(--ease),background .3s}
.nav-cta:hover{transform:translateY(-2px);background:var(--amber-hi)}
@media(max-width:720px){.nav-links a:not(.nav-cta){display:none}}

/* ---------- BUTTONS ---------- */
.btn{
  position:relative;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:var(--font-b);font-weight:600;font-size:1.02rem;line-height:1.1;
  padding:16px 30px;border-radius:100px;border:1px solid transparent;cursor:pointer;
  transition:transform .35s var(--ease),background .3s,border-color .3s,box-shadow .3s;
}
.btn-sub{font-size:.74rem;font-weight:500;opacity:.7;margin-top:3px;letter-spacing:.01em}
.btn-primary{background:var(--amber);color:var(--on-amber);box-shadow:0 10px 30px -12px color-mix(in oklch,var(--amber) 70%,transparent)}
.btn-primary:hover{transform:translateY(-3px);background:var(--amber-hi);box-shadow:0 18px 40px -14px color-mix(in oklch,var(--amber) 80%,transparent)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--amber);color:var(--amber-hi)}
.btn-block{width:100%}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:120px clamp(20px,5vw,56px) 70px;overflow:hidden}
#flow{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(120% 90% at 78% 18%,transparent 40%,var(--ink) 88%),linear-gradient(180deg,transparent 55%,var(--ink) 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--max);margin:0 auto;width:100%}
.kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-m);font-size:.82rem;letter-spacing:.04em;color:var(--text-dim);text-transform:uppercase;margin-bottom:26px}
.kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 12px var(--amber);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
h1{font-family:var(--font-d);font-weight:700;font-size:clamp(2.5rem,5.4vw + .5rem,5.6rem);line-height:.98;letter-spacing:-.035em;max-width:16ch}
.lede{font-size:clamp(1.08rem,.5vw + 1rem,1.32rem);color:var(--text-dim);max-width:54ch;margin:30px 0 38px;line-height:1.5}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-fineprint{margin-top:24px;font-size:.92rem;color:var(--text-mut);max-width:46ch}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;font-family:var(--font-m);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--text-mut);display:flex;flex-direction:column;align-items:center;gap:10px}
.hero-scroll span{width:1px;height:38px;background:linear-gradient(var(--amber),transparent);animation:drop 2s var(--ease) infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- STRIP ---------- */
.strip{max-width:var(--max);margin:0 auto;padding:34px clamp(20px,5vw,56px);border-block:1px solid var(--line-soft);display:flex;flex-wrap:wrap;align-items:center;gap:14px 30px}
.strip p{font-family:var(--font-m);font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-mut)}
.strip ul{display:flex;flex-wrap:wrap;gap:10px 26px;list-style:none}
.strip li{color:var(--text-dim);font-weight:500}

/* ---------- SECTION shell ---------- */
.section{max-width:var(--max);margin:0 auto;padding:clamp(80px,11vh,150px) clamp(20px,5vw,56px)}
.sec-head{display:flex;gap:clamp(16px,3vw,40px);align-items:flex-start}
.sec-no{font-family:var(--font-m);font-size:.95rem;color:var(--amber);padding-top:.7em;flex:none}
.sec-head h2{font-family:var(--font-d);font-weight:700;font-size:clamp(1.9rem,3.4vw + .4rem,3.4rem);line-height:1.02;letter-spacing:-.03em}
.sec-intro{color:var(--text-dim);font-size:clamp(1.05rem,.4vw + 1rem,1.25rem);max-width:58ch;margin:26px 0 0 calc(.95rem + clamp(16px,3vw,40px));line-height:1.55}

/* ---------- PROBLEMA ---------- */
.pain-grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--r);overflow:hidden;margin-top:54px}
.pain-grid li{background:var(--ink);padding:30px 28px;display:flex;flex-direction:column;gap:9px;transition:background .35s}
.pain-grid li:hover{background:var(--ink-1)}
.pain-grid b{font-family:var(--font-d);font-weight:600;font-size:1.18rem}
.pain-grid span{color:var(--text-mut);font-size:.97rem;line-height:1.5}

/* ---------- MÉTODO DIA ---------- */
.dia{list-style:none;margin:60px 0 0;counter-reset:none}
.dia-step{display:grid;grid-template-columns:minmax(170px,230px) 1fr;gap:clamp(20px,4vw,64px);padding:42px 0;border-top:1px solid var(--line-soft)}
.dia-step:last-of-type{border-bottom:1px solid var(--line-soft)}
.dia-tag{display:flex;align-items:baseline;gap:16px}
.dia-letter{font-family:var(--font-d);font-weight:800;font-size:clamp(3.4rem,6vw,5.6rem);line-height:.8;color:var(--amber);letter-spacing:-.04em}
.dia-name{font-family:var(--font-m);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-mut)}
.dia-body h3{font-family:var(--font-d);font-weight:600;font-size:clamp(1.4rem,1.5vw + 1rem,2rem);letter-spacing:-.02em;margin-bottom:12px}
.dia-body p{color:var(--text-dim);max-width:60ch}
.dia-out{margin-top:14px;font-size:.92rem;color:var(--text-mut);padding-left:16px;border-left:2px solid var(--amber);}
.aria-intel{margin-top:48px;background:linear-gradient(135deg,var(--ink-1),var(--ink));border:1px solid var(--line-soft);border-radius:var(--r);padding:clamp(30px,4vw,52px);display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.ai-kicker{font-family:var(--font-m);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--amber)}
.aria-intel h3{font-family:var(--font-d);font-weight:700;font-size:clamp(1.5rem,2vw + 1rem,2.3rem);letter-spacing:-.025em;margin:10px 0 12px}
.aria-intel p{color:var(--text-dim);max-width:52ch}
.ai-cycle{display:flex;flex-direction:column;gap:10px;font-family:var(--font-m);font-size:.82rem}
.ai-cycle span{position:relative;padding:10px 18px 10px 30px;border:1px solid var(--line);border-radius:100px;color:var(--text-dim)}
.ai-cycle span::before{content:"";position:absolute;left:14px;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--amber)}
@media(max-width:820px){.aria-intel{grid-template-columns:1fr}.ai-cycle{flex-flow:row wrap}}
@media(max-width:680px){.dia-step{grid-template-columns:1fr;gap:14px}.dia-tag{align-items:center}}

/* ---------- PRUEBA ---------- */
.case{margin:54px 0 0;max-width:24ch}
.case{max-width:none}
.case blockquote{font-family:var(--font-d);font-weight:500;font-size:clamp(1.6rem,2.6vw + .6rem,3rem);line-height:1.12;letter-spacing:-.025em;max-width:20ch}
.case blockquote b{color:var(--amber);font-weight:700}
.case figcaption{margin-top:22px;font-family:var(--font-m);font-size:.82rem;letter-spacing:.06em;color:var(--text-mut);text-transform:uppercase}
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;margin-top:64px;border-top:1px solid var(--line-soft);padding-top:46px}
.m-num{font-family:var(--font-d);font-weight:700;font-size:clamp(3rem,5vw,4.6rem);letter-spacing:-.04em;line-height:1}
.m-unit{font-family:var(--font-d);font-weight:600;font-size:1.8rem;color:var(--amber);margin-left:2px}
.metrics p{color:var(--text-dim);margin-top:8px;font-size:.98rem}

/* ---------- AGENDA / BOOKING ---------- */
.agenda{}
.agenda-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(30px,5vw,72px);align-items:start}
.agenda-copy .sec-no{display:block;margin-bottom:18px}
.agenda-copy h2{font-family:var(--font-d);font-weight:700;font-size:clamp(2rem,3vw + .5rem,3.2rem);letter-spacing:-.03em;line-height:1}
.agenda-copy>p{color:var(--text-dim);margin:22px 0 26px;max-width:46ch}
.reassure{list-style:none;display:flex;flex-direction:column;gap:13px;margin-bottom:30px}
.reassure li{position:relative;padding-left:30px;color:var(--text-dim)}
.reassure li::before{content:"";position:absolute;left:0;top:.45em;width:16px;height:16px;border-radius:50%;background:color-mix(in oklch,var(--amber) 22%,transparent);box-shadow:inset 0 0 0 1.5px var(--amber)}
.reassure li::after{content:"";position:absolute;left:5px;top:.72em;width:5px;height:9px;border-right:2px solid var(--amber);border-bottom:2px solid var(--amber);transform:rotate(40deg)}
.wa-inline{display:inline-flex;align-items:center;gap:10px;color:var(--text-dim);font-weight:500;border-bottom:1px solid var(--line);padding-bottom:3px;transition:color .25s,border-color .25s}
.wa-inline:hover{color:var(--amber-hi);border-color:var(--amber)}

.booking{background:var(--ink-1);border:1px solid var(--line-soft);border-radius:var(--r);padding:clamp(22px,3vw,36px);box-shadow:0 40px 80px -40px oklch(0 0 0 / .6)}
.book-step{padding:22px 0;border-top:1px solid var(--line-soft);transition:opacity .4s}
.book-step:first-child{border-top:0;padding-top:4px}
.book-step.is-disabled{opacity:.4;pointer-events:none;filter:saturate(.4)}
.book-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.book-head h3{font-family:var(--font-d);font-weight:600;font-size:1.12rem}
.step-pill{width:26px;height:26px;border-radius:50%;background:var(--amber);color:var(--on-amber);font-family:var(--font-m);font-size:.85rem;font-weight:600;display:grid;place-items:center;flex:none}
.tz{margin-left:auto;font-family:var(--font-m);font-size:.72rem;color:var(--text-mut)}

.days{display:flex;gap:8px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x proximity;scrollbar-width:thin;scrollbar-color:var(--line) transparent;-webkit-overflow-scrolling:touch}
.day{flex:none;width:60px;padding:9px 0;border:1px solid var(--line);border-radius:11px;background:transparent;color:var(--text);cursor:pointer;text-align:center;scroll-snap-align:start;transition:border-color .25s,background .25s,transform .25s var(--ease)}
.day:hover{border-color:var(--amber);transform:translateY(-2px)}
.day.sel{background:var(--amber);color:var(--on-amber);border-color:var(--amber)}
.day .dow{display:block;font-family:var(--font-m);font-size:.64rem;text-transform:uppercase;letter-spacing:.04em;opacity:.7}
.day .dnum{display:block;font-family:var(--font-d);font-weight:700;font-size:1.28rem;line-height:1.15}
.day .dmon{display:block;font-size:.66rem;opacity:.7}

.times{display:grid;grid-template-columns:repeat(auto-fill,minmax(58px,1fr));gap:7px}
.times .hint,.times .empty{grid-column:1/-1;color:var(--text-mut);font-size:.95rem}
.slot{padding:9px 0;border:1px solid var(--line);border-radius:9px;background:transparent;color:var(--text);font-family:var(--font-m);font-size:.82rem;cursor:pointer;transition:border-color .25s,background .25s,transform .2s var(--ease)}
.slot:hover{border-color:var(--amber);transform:translateY(-2px)}
.slot.sel{background:var(--amber);color:var(--on-amber);border-color:var(--amber)}
.slot:disabled{opacity:.3;cursor:not-allowed;text-decoration:line-through}

.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fields label{display:flex;flex-direction:column;gap:6px;font-size:.86rem;color:var(--text-dim)}
.fields label.full{grid-column:1/-1}
.fields .opt{color:var(--text-mut)}
.fields input,.fields textarea{font-family:var(--font-b);font-size:1rem;color:var(--text);background:var(--ink);border:1px solid var(--line);border-radius:10px;padding:12px 14px;transition:border-color .25s}
.fields input:focus,.fields textarea:focus{outline:none;border-color:var(--amber)}
.fields textarea{resize:vertical}
#bookForm .btn{margin-top:20px}
.form-err{color:oklch(0.72 0.17 25);font-size:.9rem;margin-top:12px;min-height:1em}

.confirmed{text-align:center;padding:18px 4px}
.check{width:62px;height:62px;border-radius:50%;margin:0 auto 22px;background:color-mix(in oklch,var(--amber) 18%,transparent);box-shadow:inset 0 0 0 2px var(--amber);position:relative}
.check::after{content:"";position:absolute;left:21px;top:16px;width:13px;height:24px;border-right:3px solid var(--amber);border-bottom:3px solid var(--amber);transform:rotate(42deg)}
.confirmed h3{font-family:var(--font-d);font-weight:700;font-size:1.7rem;margin-bottom:10px}
.confirmed>p{color:var(--text-dim);margin-bottom:24px}
.cf-actions{display:flex;flex-direction:column;gap:12px;max-width:340px;margin:0 auto}
.cf-note{margin-top:20px;font-size:.86rem;color:var(--text-mut)}
@media(max-width:980px){.agenda-grid{grid-template-columns:1fr}}
@media(max-width:880px){.fields{grid-template-columns:1fr}}
@media(max-width:520px){
  .booking{padding:18px 16px}
  .times{grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:6px}
  .slot{font-size:.8rem;padding:8px 0}
  .day{width:56px}
  .book-head h3{font-size:1.04rem}
}

/* ---------- FAQ ---------- */
.faq-list{margin-top:46px;border-top:1px solid var(--line-soft)}
.faq-list details{border-bottom:1px solid var(--line-soft)}
.faq-list summary{list-style:none;cursor:pointer;padding:24px 40px 24px 0;font-family:var(--font-d);font-weight:600;font-size:clamp(1.1rem,1vw + .9rem,1.4rem);position:relative;transition:color .25s}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--amber-hi)}
.faq-list summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font-family:var(--font-d);font-weight:500;color:var(--amber);font-size:1.5rem;transition:transform .3s var(--ease)}
.faq-list details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-list p{color:var(--text-dim);padding:0 40px 26px 0;max-width:66ch}

/* ---------- FINAL ---------- */
.final{text-align:center;padding:clamp(90px,14vh,170px) clamp(20px,5vw,56px);background:radial-gradient(90% 120% at 50% 0%,var(--ink-1),var(--ink))}
.final h2{font-family:var(--font-d);font-weight:700;font-size:clamp(2.1rem,4vw + .5rem,4.2rem);letter-spacing:-.035em;line-height:1;margin-bottom:36px}
.final .hero-cta{justify-content:center}

/* ---------- FOOTER ---------- */
.foot{max-width:var(--max);margin:0 auto;padding:46px clamp(20px,5vw,56px);border-top:1px solid var(--line-soft);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.foot .brand-name{font-family:var(--font-d);font-weight:700;font-size:1.15rem}
.foot p{color:var(--text-mut);font-size:.9rem}

/* ---------- WhatsApp ---------- */
.wa-ico{width:22px;height:22px;display:inline-block;background:currentColor;-webkit-mask:var(--wa) center/contain no-repeat;mask:var(--wa) center/contain no-repeat;
  --wa:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M.057 24l1.687-6.163a11.867 11.867 0 01-1.587-5.945C.16 5.335 5.495 0 12.05 0a11.817 11.817 0 018.413 3.488 11.824 11.824 0 013.48 8.414c-.003 6.557-5.338 11.892-11.893 11.892a11.9 11.9 0 01-5.688-1.448L.057 24zm6.597-3.807c1.676.995 3.276 1.591 5.392 1.592 5.448 0 9.886-4.434 9.889-9.885.002-5.462-4.415-9.89-9.881-9.892-5.452 0-9.887 4.434-9.889 9.884a9.86 9.86 0 001.51 5.26l-.999 3.648 3.978-1.607zm11.387-5.464c-.074-.124-.272-.198-.57-.347-.297-.149-1.758-.868-2.031-.967-.272-.099-.47-.149-.669.149-.198.297-.768.967-.941 1.165-.173.198-.347.223-.644.074-.297-.149-1.255-.462-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.297-.347.446-.521.151-.172.2-.296.3-.495.099-.198.05-.372-.025-.521-.075-.148-.669-1.611-.916-2.206-.242-.579-.487-.501-.669-.51l-.57-.01c-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.263.489 1.694.626.712.226 1.36.194 1.872.118.571-.085 1.758-.719 2.006-1.413.248-.695.248-1.29.173-1.414z'/%3E%3C/svg%3E");}
.wa-float{position:fixed;right:22px;bottom:22px;z-index:60;width:58px;height:58px;border-radius:50%;background:oklch(0.72 0.16 152);color:#fff;display:grid;place-items:center;box-shadow:0 14px 34px -10px oklch(0.72 0.16 152 / .7);transition:transform .35s var(--ease)}
.wa-float:hover{transform:scale(1.08) translateY(-2px)}
.wa-float .wa-ico{width:30px;height:30px}