/* ============================================================
   CARAT ATELIER — Sistema de diseño
   Estética: futurista + artesanal (maderas oscuras, inox, vidrio)
   ============================================================ */

/* ---------- Variables ---------- */
:root{
  /* Maderas oscuras */
  --wood-900:#120d09;
  --wood-800:#1a130d;
  --wood-700:#241a12;
  --wood-600:#33261a;
  --wood-500:#46342356;

  /* Inox / platino */
  --steel-100:#f3f5f6;
  --steel-200:#dfe3e6;
  --steel-300:#bcc3c8;
  --steel-400:#8d969d;
  --steel-500:#5f676d;

  /* Acento champagne / oro cálido */
  --gold-300:#e7d3a6;
  --gold-400:#d4b673;
  --gold-500:#c39c4e;

  /* Brillo frío "lab" */
  --ice-300:#aee7e4;
  --ice-400:#7fd3d0;

  /* Texto */
  --ink:#f4efe7;
  --ink-soft:#cdc4b6;
  --ink-mute:#9a9183;

  /* Cristal */
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --hairline:rgba(212,182,115,.22);
  --hairline-soft:rgba(255,255,255,.09);

  --radius:18px;
  --radius-sm:12px;
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-serif:"Cormorant Garamond",Georgia,serif;
  --font-sans:"Manrope","Helvetica Neue",Arial,sans-serif;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--wood-900);
  line-height:1.65;
  font-size:17px;
  letter-spacing:.01em;
  overflow-x:hidden;
  position:relative;
}
/* Textura de fondo: grano + vetas de madera + halo frío */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 600px at 80% -10%, rgba(127,211,208,.10), transparent 60%),
    radial-gradient(1000px 700px at 10% 110%, rgba(195,156,78,.10), transparent 60%),
    linear-gradient(180deg,var(--wood-900),var(--wood-800) 40%,var(--wood-900));
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;opacity:.04;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* ---------- Tipografía ---------- */
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.08;letter-spacing:.005em}
h1{font-size:clamp(2.6rem,6vw,5rem)}
h2{font-size:clamp(2rem,4vw,3.2rem)}
h3{font-size:clamp(1.3rem,2.4vw,1.8rem)}
.eyebrow{
  font-family:var(--font-sans);font-size:.78rem;font-weight:600;
  letter-spacing:.28em;text-transform:uppercase;color:var(--gold-400);
}
.lead{font-size:1.18rem;color:var(--ink-soft);max-width:60ch}
.metal-text{
  background:linear-gradient(100deg,var(--steel-200),var(--gold-300) 45%,var(--steel-100) 70%,var(--gold-400));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{padding:clamp(56px,9vw,120px) 0}
.grid{display:grid;gap:28px}
.center{text-align:center}
.muted{color:var(--ink-mute)}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  padding:.95em 1.7em;border-radius:100px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;transition:.35s var(--ease);white-space:nowrap;
}
.btn-primary{
  color:var(--wood-900);
  background:linear-gradient(100deg,var(--gold-300),var(--gold-500));
  box-shadow:0 8px 30px rgba(195,156,78,.25);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(195,156,78,.4)}
.btn-ghost{
  color:var(--ink);border:1px solid var(--hairline);background:var(--glass);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{border-color:var(--gold-400);color:var(--gold-300)}
.btn-block{width:100%;justify-content:center}

/* ---------- Tarjetas de cristal ---------- */
.glass{
  background:var(--glass);border:1px solid var(--hairline-soft);
  border-radius:var(--radius);backdrop-filter:blur(14px);
  position:relative;overflow:hidden;
}
.glass::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--hairline),transparent);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(18,13,9,.55);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--hairline-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:.7em;font-family:var(--font-serif);font-size:1.45rem;font-weight:600;letter-spacing:.02em}
.brand svg{width:30px;height:30px;flex:none}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none}
.nav-links a{font-size:.95rem;color:var(--ink-soft);transition:.25s;position:relative}
.nav-links a:hover{color:var(--gold-300)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:1px;width:0;background:var(--gold-400);transition:.3s}
.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:18px}

/* Selector de idioma */
.lang{position:relative}
.lang-btn{display:flex;align-items:center;gap:.4em;background:var(--glass);border:1px solid var(--hairline-soft);color:var(--ink-soft);padding:.5em .8em;border-radius:100px;font-size:.85rem}
.lang-menu{position:absolute;right:0;top:120%;min-width:150px;background:rgba(26,19,13,.96);border:1px solid var(--hairline);border-radius:var(--radius-sm);padding:6px;display:none;backdrop-filter:blur(14px);box-shadow:0 20px 50px rgba(0,0,0,.5)}
.lang-menu.open{display:block}
.lang-menu a{display:block;padding:.5em .7em;border-radius:8px;font-size:.9rem;color:var(--ink-soft)}
.lang-menu a:hover{background:var(--glass-strong);color:var(--gold-300)}
.lang-menu a.active{color:var(--gold-400)}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.3s}

@media(max-width:900px){
  .nav-links{
    position:fixed;inset:76px 0 auto 0;flex-direction:column;gap:0;
    background:rgba(18,13,9,.98);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--hairline);padding:10px 0;
    transform:translateY(-120%);transition:.4s var(--ease);
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links li{width:100%;text-align:center}
  .nav-links a{display:block;padding:16px}
  .burger{display:flex}
}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;padding:clamp(70px,12vw,150px) 0 clamp(60px,9vw,120px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero h1{margin:.3em 0 .35em}
.hero .lead{margin-bottom:2em}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:48px;flex-wrap:wrap}
.hero-stats .num{font-family:var(--font-serif);font-size:2rem;color:var(--gold-300)}
.hero-stats .lbl{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute)}

/* Visual del diamante (SVG animado) */
.hero-visual{position:relative;display:grid;place-items:center;min-height:420px}
.diamond-stage{position:relative;width:min(440px,90%);aspect-ratio:1;display:grid;place-items:center}
.diamond-stage .halo{position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle,rgba(127,211,208,.22),transparent 62%);filter:blur(8px)}
.diamond-stage svg{width:78%;filter:drop-shadow(0 20px 50px rgba(127,211,208,.25));animation:floaty 6s var(--ease) infinite}
@keyframes floaty{0%,100%{transform:translateY(-8px) rotate(-1deg)}50%{transform:translateY(8px) rotate(1deg)}}
.ring{position:absolute;border:1px solid var(--hairline);border-radius:50%;animation:spin 26s linear infinite}
.ring.r1{inset:-4%}
.ring.r2{inset:10%;border-color:var(--hairline-soft);animation-duration:38s;animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}}

@media(max-width:860px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-visual{min-height:320px;order:-1}
}

/* ============================================================
   SECCIONES DE VALOR
   ============================================================ */
.section-head{max-width:62ch;margin-bottom:50px}
.section-head.center{margin-inline:auto}
.cards-3{grid-template-columns:repeat(3,1fr)}
.cards-2{grid-template-columns:repeat(2,1fr)}
.feature{padding:34px;transition:.4s var(--ease)}
.feature:hover{transform:translateY(-6px);border-color:var(--hairline)}
.feature .ic{width:52px;height:52px;display:grid;place-items:center;border-radius:14px;
  background:linear-gradient(135deg,var(--glass-strong),transparent);border:1px solid var(--hairline-soft);margin-bottom:20px;color:var(--gold-300)}
.feature h3{margin-bottom:.4em}
.feature p{color:var(--ink-soft);font-size:.98rem}

/* Tarjetas de producto destacado */
.product-cards{grid-template-columns:repeat(2,1fr)}
.pcard{padding:0;overflow:hidden;display:flex;flex-direction:column}
.pcard .pcard-vis{aspect-ratio:16/10;display:grid;place-items:center;position:relative;
  background:radial-gradient(circle at 50% 40%,rgba(127,211,208,.14),transparent 60%),linear-gradient(160deg,var(--wood-700),var(--wood-900))}
.pcard .pcard-vis svg{width:42%;filter:drop-shadow(0 14px 30px rgba(127,211,208,.3))}
.pcard .pcard-body{padding:32px;display:flex;flex-direction:column;gap:14px;flex:1}
.pcard h3{font-size:1.6rem}
.pcard p{color:var(--ink-soft);font-size:.98rem;flex:1}
.pcard .from{font-size:.85rem;color:var(--ink-mute)}
.pcard .from b{font-family:var(--font-serif);font-size:1.5rem;color:var(--gold-300);display:block}

@media(max-width:860px){.cards-3,.cards-2,.product-cards{grid-template-columns:1fr}}

/* Banda de proceso */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{padding:28px}
.step::before{counter-increment:s;content:"0" counter(s);font-family:var(--font-serif);font-size:1.8rem;color:var(--gold-400);display:block;margin-bottom:10px}
.step h4{font-size:1.1rem;margin-bottom:.3em}
.step p{font-size:.92rem;color:var(--ink-soft)}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.steps{grid-template-columns:1fr}}

/* CTA banda */
.cta-band{text-align:center;padding:clamp(48px,7vw,86px);margin:0 auto}
.cta-band h2{margin-bottom:.4em}
.cta-band p{color:var(--ink-soft);max-width:54ch;margin:0 auto 1.8em}

/* ============================================================
   CONFIGURADOR DE PRODUCTO
   ============================================================ */
.config-layout{display:grid;grid-template-columns:1.4fr .9fr;gap:34px;align-items:start}
@media(max-width:980px){.config-layout{grid-template-columns:1fr}}

.config-panel{padding:34px}
.field{margin-bottom:30px}
.field:last-child{margin-bottom:0}
.field-label{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px}
.field-label .name{font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-mute)}
.field-label .val{font-family:var(--font-serif);font-size:1.3rem;color:var(--gold-300)}

/* Botonera de opciones (chips) */
.opts{display:flex;flex-wrap:wrap;gap:10px}
.opt{
  padding:.6em 1em;border-radius:10px;font-size:.9rem;
  background:var(--glass);border:1px solid var(--hairline-soft);color:var(--ink-soft);
  transition:.22s;min-width:46px;text-align:center;
}
.opt:hover{border-color:var(--gold-400);color:var(--gold-200)}
.opt.active{background:linear-gradient(120deg,var(--gold-300),var(--gold-500));color:var(--wood-900);border-color:transparent;font-weight:600}

/* Selector de forma con icono */
.shapes{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
@media(max-width:560px){.shapes{grid-template-columns:repeat(4,1fr)}}
.shape{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 4px;border-radius:12px;
  background:var(--glass);border:1px solid var(--hairline-soft);color:var(--ink-soft);font-size:.72rem;transition:.22s}
.shape svg{width:30px;height:30px}
.shape:hover{border-color:var(--gold-400)}
.shape.active{border-color:var(--gold-400);background:var(--glass-strong);color:var(--gold-300)}

/* Slider de quilates */
.range{width:100%;-webkit-appearance:none;appearance:none;height:4px;border-radius:4px;
  background:linear-gradient(90deg,var(--gold-400),var(--gold-400)) no-repeat,var(--wood-600);
  background-size:50% 100%;outline:none}
.range::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,var(--steel-100),var(--steel-400));border:2px solid var(--gold-400);cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.4)}
.range::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--steel-200);border:2px solid var(--gold-400);cursor:pointer}
.range-scale{display:flex;justify-content:space-between;font-size:.72rem;color:var(--ink-mute);margin-top:8px}

.qty-row{display:flex;align-items:center;gap:14px}
.qty-row input{width:90px;background:var(--glass);border:1px solid var(--hairline-soft);color:var(--ink);
  border-radius:10px;padding:.6em .8em;font-size:1rem;font-family:inherit}

/* Resumen / precio (sticky) */
.summary{padding:32px;position:sticky;top:96px}
.summary h3{font-size:1.4rem;margin-bottom:18px}
.sum-row{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--hairline-soft);font-size:.92rem}
.sum-row span:first-child{color:var(--ink-mute)}
.sum-row span:last-child{color:var(--ink);text-align:right}
.price-box{margin:24px 0;padding:22px;border-radius:14px;background:radial-gradient(circle at 30% 0%,rgba(195,156,78,.16),transparent),var(--glass-strong);border:1px solid var(--hairline)}
.price-box .lbl{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-mute)}
.price-box .amount{font-family:var(--font-serif);font-size:2.8rem;color:var(--gold-300);line-height:1.1}
.price-box .note{font-size:.78rem;color:var(--ink-mute);margin-top:4px}
.trust-mini{display:flex;flex-direction:column;gap:8px;margin-top:18px;font-size:.82rem;color:var(--ink-soft)}
.trust-mini div{display:flex;align-items:center;gap:.5em}
.trust-mini svg{width:16px;height:16px;color:var(--ice-400);flex:none}

/* ============================================================
   PÁGINAS DE CONTENIDO (legal / contacto / faq)
   ============================================================ */
.page-hero{padding:clamp(60px,9vw,110px) 0 0}
.page-hero .eyebrow{margin-bottom:14px}
.prose{max-width:74ch}
.prose h2{margin:1.6em 0 .5em;font-size:1.8rem}
.prose h3{margin:1.3em 0 .4em}
.prose p{margin-bottom:1em;color:var(--ink-soft)}
.prose ul{margin:0 0 1em 1.2em;color:var(--ink-soft)}
.prose li{margin-bottom:.5em}
.prose a{color:var(--gold-300);text-decoration:underline;text-underline-offset:3px}

/* Contacto */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:8px}
.form-row input,.form-row textarea,.form-row select{
  width:100%;background:var(--glass);border:1px solid var(--hairline-soft);color:var(--ink);
  border-radius:12px;padding:.85em 1em;font-size:1rem;font-family:inherit;transition:.25s}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{outline:none;border-color:var(--gold-400)}
.form-row textarea{min-height:140px;resize:vertical}
.contact-info{padding:34px}
.contact-info .row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--hairline-soft)}
.contact-info .row:last-child{border:none}
.contact-info svg{width:22px;height:22px;color:var(--gold-300);flex:none}
.contact-info b{display:block;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute);font-weight:600}

/* FAQ */
.faq-item{border:1px solid var(--hairline-soft);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;background:var(--glass)}
.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--ink);padding:20px 24px;font-size:1.05rem;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-q .pm{color:var(--gold-400);font-size:1.5rem;transition:.3s;flex:none}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a p{padding:0 24px 22px;color:var(--ink-soft)}
.faq-item.open .faq-q .pm{transform:rotate(45deg)}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{border-top:1px solid var(--hairline-soft);background:linear-gradient(180deg,transparent,rgba(0,0,0,.3));margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:70px 0 50px}
.footer-grid h4{font-family:var(--font-sans);font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-400);margin-bottom:20px}
.footer-grid ul{list-style:none}
.footer-grid li{margin-bottom:12px}
.footer-grid a{color:var(--ink-soft);font-size:.92rem;transition:.2s}
.footer-grid a:hover{color:var(--gold-300)}
.footer-brand p{color:var(--ink-mute);font-size:.92rem;margin:14px 0 18px;max-width:34ch}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 0;border-top:1px solid var(--hairline-soft);flex-wrap:wrap}
.footer-bottom p{font-size:.82rem;color:var(--ink-mute)}
.pay-badges{display:flex;gap:10px;align-items:center;opacity:.7}
.pay-badges svg{height:22px;width:auto}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}

/* ---------- Utilidades de animación de entrada ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:.8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Toast / aviso ---------- */
.notice{padding:14px 18px;border-radius:12px;background:var(--glass-strong);border:1px solid var(--hairline);font-size:.9rem;color:var(--ink-soft);margin-top:16px}
.notice.ok{border-color:rgba(127,211,208,.4)}
.notice.err{border-color:rgba(220,120,90,.5);color:#f0c5b5}