/* Lumé Tour — recorridos 3D inmobiliarios */
:root {
  --linen:#F4EFE6; --paper:#FAF6EE; --paper-2:#E8DECB;
  --ink:#0E0D0C; --ink-2:#1A1714; --ink-soft:#5C544A; --ink-faint:#8C8275;
  --line:#E2D9C8; --line-strong:#D2C6B0;
  --gold:#C79A4B; --gold-deep:#835E22; --gold-tint:#EFE3CE;
  --font-display:'Fraunces',Georgia,serif; --font-sans:'Geist',system-ui,sans-serif;
  --maxw:1240px; --gutter:clamp(1.25rem,4vw,4rem);
  --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box} *{margin:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--font-sans);font-size:clamp(1rem,.96rem+.2vw,1.1rem);line-height:1.55;letter-spacing:-.005em;color:var(--ink-2);background:var(--linen);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,canvas,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none} button{font:inherit;color:inherit;cursor:pointer;border:none;background:none}
h1,h2,h3{font-family:var(--font-display);font-weight:400;line-height:1.04;letter-spacing:-.02em;font-optical-sizing:auto}
em{font-style:italic;color:var(--gold)}
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.eyebrow{font-size:.78rem;letter-spacing:.26em;text-transform:uppercase;color:var(--gold-deep);font-weight:500}
.eyebrow.center,.title.center{text-align:center}
.title{font-size:clamp(2rem,1.5rem+2.6vw,3.6rem);margin-top:.6rem}
.lead{font-size:clamp(1.1rem,1rem+.5vw,1.4rem);line-height:1.45;color:var(--ink-soft)}
.muted{color:var(--ink-faint)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;font-weight:500;padding:.95rem 1.6rem;border-radius:2px;border:1px solid transparent;transition:.3s var(--ease)}
.btn--gold{background:var(--gold);color:#231a09}
.btn--gold:hover{background:#d9ad5c}
.btn--dark{background:var(--ink);color:var(--linen)}
.btn--dark:hover{background:var(--ink-2)}
.btn--ghost{border-color:currentColor;color:inherit}
.btn--ghost:hover{background:rgba(255,255,255,.08)}

/* nav */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem var(--gutter);color:var(--linen);background:linear-gradient(180deg,rgba(14,13,12,.85),rgba(14,13,12,0))}
.brand{font-family:var(--font-display);font-size:1.3rem;letter-spacing:.01em}
.brand .acc{color:var(--gold)}
.nav__links{display:flex;gap:1.6rem}
.nav__links a{font-size:.85rem}
.nav__links a:hover{color:var(--gold)}
@media (max-width:780px){.nav__links{display:none}}

/* hero */
.hero{background:var(--ink);color:var(--linen);min-height:100svh;display:grid;grid-template-columns:1fr;gap:clamp(1.5rem,4vw,3rem);align-items:center;padding:6rem var(--gutter) 3rem}
@media (min-width:960px){.hero{grid-template-columns:0.92fr 1.08fr;padding-block:7rem 4rem}}
.hero__copy{max-width:34rem}
.hero h1{font-size:clamp(2.6rem,1.8rem+4vw,5rem);margin:1rem 0}
.hero .eyebrow{color:var(--gold)}
.hero .lead{color:#CFC7B7}
.hero .lead strong{color:var(--linen);font-weight:500}
.hero__cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.8rem}
.hero__hint{margin-top:1.6rem;font-size:.8rem;letter-spacing:.04em;color:var(--gold);text-transform:uppercase}

/* viewer */
.viewer{position:relative;aspect-ratio:4/3;border-radius:6px;overflow:hidden;background:#08110f;box-shadow:0 30px 80px rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.08)}
@media (min-width:960px){.viewer{aspect-ratio:auto;height:min(70vh,620px)}}
#splat{width:100%;height:100%;display:block;cursor:grab;touch-action:none}
#splat:active{cursor:grabbing}
.viewer__loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;background:#0c0b0a;color:#CFC7B7;text-align:center;padding:1.5rem;transition:opacity .6s ease}
.viewer__loading.hide{opacity:0;pointer-events:none}
.viewer__small{font-size:.74rem;color:var(--ink-faint);max-width:30ch}
.spinner{width:38px;height:38px;border-radius:50%;border:2px solid rgba(199,154,75,.25);border-top-color:var(--gold);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.viewer__hud{position:absolute;left:0;right:0;top:0;display:flex;justify-content:space-between;padding:.8rem 1rem;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:#EBE4D6;pointer-events:none}
.viewer__badge{background:rgba(14,13,12,.6);padding:.3rem .6rem;border-radius:999px;backdrop-filter:blur(6px);color:#7CE0B0}
.viewer__drag{background:rgba(14,13,12,.6);padding:.3rem .6rem;border-radius:999px;backdrop-filter:blur(6px)}
.viewer__cap{position:absolute;left:0;right:0;bottom:0;padding:.7rem 1rem;font-size:.78rem;color:#CFC7B7;background:linear-gradient(0deg,rgba(8,9,8,.85),transparent)}
.viewer__cap strong{color:var(--linen);font-weight:500}

/* sections */
.section{padding-block:clamp(4rem,8vw,7rem)}
.section--dark{background:var(--ink-2);color:var(--linen)}
.section--dark .lead{color:#CFC7B7}
.section--dark .title{color:var(--linen)}
.section--gold{background:var(--gold-tint)}

/* steps */
.steps{list-style:none;padding:0;margin:clamp(2.5rem,5vw,4rem) 0 0;display:grid;gap:1.5rem;grid-template-columns:1fr}
@media (min-width:760px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{border-top:1px solid var(--line-strong);padding-top:1.4rem}
.step__n{font-family:var(--font-display);font-size:2.2rem;color:var(--gold)}
.step h3{font-size:1.5rem;margin:.6rem 0 .5rem}
.step p{color:var(--ink-soft);max-width:34ch}

/* upload */
.upload{display:grid;gap:2.5rem;grid-template-columns:1fr;align-items:center}
@media (min-width:880px){.upload{grid-template-columns:.9fr 1.1fr}}
.upload__copy{max-width:34rem}
.drop{display:flex;flex-direction:column;gap:1rem}
.drop__inner{border:1.5px dashed #6d6253;border-radius:6px;padding:clamp(2rem,5vw,3.2rem);text-align:center;color:#CFC7B7;transition:.25s var(--ease);background:rgba(255,255,255,.02)}
.drop__inner.over{border-color:var(--gold);background:rgba(199,154,75,.08);color:var(--linen)}
.drop__inner svg{margin:0 auto .8rem;color:var(--gold)}
.drop__title{font-size:1.15rem;color:var(--linen)}
.drop__or{margin-top:.3rem;font-size:.9rem}
.link{color:var(--gold);text-decoration:underline;text-underline-offset:3px}
.drop__hint{margin-top:.6rem;font-size:.78rem;color:var(--ink-faint)}
.drop__list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.5rem}
.drop__list li{font-size:.78rem;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);padding:.3rem .6rem;border-radius:999px;color:#EBE4D6;max-width:18ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.drop__go{align-self:flex-start;opacity:1}
.drop__go:disabled{opacity:.4;cursor:not-allowed}
.drop__status{font-size:.85rem;color:var(--gold);min-height:1.2em}

/* cards */
.cards{display:grid;gap:1.2rem;grid-template-columns:1fr;margin-top:clamp(2.5rem,5vw,3.5rem)}
@media (min-width:680px){.cards{grid-template-columns:1fr 1fr}}
@media (min-width:1000px){.cards{grid-template-columns:repeat(4,1fr)}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:1.6rem}
.card h3{font-size:1.25rem;margin-bottom:.5rem}
.card p{color:var(--ink-soft);font-size:.95rem}
.card em{color:var(--gold-deep);font-style:italic}
.card strong{color:var(--ink-2);font-weight:500}

/* cta */
.cta{text-align:center;max-width:46rem;margin-inline:auto}
.cta .lead{color:#5b4e34;margin:1rem auto 1.8rem;max-width:40ch}
.cta__note{margin-top:1.4rem;font-size:.85rem;color:#6b5b3a}
.cta__note strong{color:#3a2f12}

/* footer */
.footer{background:var(--ink);color:#9b9486;padding-block:2.5rem}
.footer__grid{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem}
.footer .brand{color:var(--linen)}
.footer__legal{font-size:.78rem;max-width:60ch}

@media (prefers-reduced-motion:reduce){.spinner{animation:none}}