/* =========================================================
   GRUPO ALVITEC S.A.C. — Hoja de estilos
   Paleta: blanco · beige · azul marino · dorado
   ========================================================= */

:root {
  --navy: #0f1f3a;
  --navy-2: #172b4d;
  --navy-3: #22385f;
  --navy-deep: #0a1630;
  --beige: #f4eee4;
  --beige-2: #e9dfcf;
  --sand: #d8c7ab;
  --white: #ffffff;
  --ink: #1d2433;
  --muted: #646b7a;
  --muted-light: #aab5c9;
  --gold: #c5a059;
  --gold-2: #dcbd7c;
  --gold-dark: #9c7a36;
  --wa: #25d366;

  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;

  --radius: 4px;
  --shadow: 0 18px 50px -20px rgba(15, 31, 58, .35);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --header-h: 84px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: lining-nums;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.container { width: min(1200px, 100% - 40px); margin-inline: auto; }
.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---------- Tipografía ---------- */
.eyebrow {
  font-size: .72rem; letter-spacing: .3em; text-transform: uppercase; font-weight: 600;
  color: var(--gold-dark); display: inline-flex; align-items: center; gap: 12px; margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; flex-shrink: 0; }
.eyebrow--light { color: var(--gold-2); }

.section { padding: clamp(72px, 10vw, 120px) 0; }
.section--beige { background: var(--beige); }
.section--navy { background: var(--navy); color: #dfe4ee; }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.section__head .eyebrow::after { content: ""; width: 28px; height: 1px; background: currentColor; }
.section__title {
  font-family: var(--serif); font-weight: 600; font-size: clamp(2rem, 4.2vw, 3.1rem);
  line-height: 1.12; color: var(--navy); margin-bottom: 16px;
}
.section--navy .section__title { color: var(--white); }
.section__lead { color: var(--muted); font-size: 1.02rem; }
.section--navy .section__lead { color: #b5bfd1; }
.section__cta { text-align: center; margin-top: 56px; }
.section__cta p { font-family: var(--serif); font-style: italic; font-size: 1.6rem; color: var(--navy); margin-bottom: 18px; }
.section__cta .section__cta-small { font-family: var(--sans); font-style: normal; font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.subhead { font-family: var(--serif); font-size: 1.9rem; font-weight: 600; color: var(--navy); text-align: center; margin: 80px 0 28px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 28px; font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  border-radius: var(--radius); white-space: nowrap;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s, color .3s;
}
.btn:hover { transform: translateY(-2px); }
.btn--gold { background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, var(--gold-dark)); color: var(--navy); box-shadow: 0 10px 30px -10px rgba(197,160,89,.7); }
.btn--gold:hover { box-shadow: 0 16px 36px -10px rgba(197,160,89,.85); }
.btn--navy { background: var(--navy); color: var(--white); }
.btn--navy:hover { background: var(--navy-3); }
.btn--outline-light { border: 1px solid rgba(255,255,255,.55); color: var(--white); }
.btn--outline-light:hover { background: var(--white); color: var(--navy); }
.btn--sm { padding: 11px 20px; font-size: .7rem; }
.btn--block { width: 100%; }
.ico { width: 18px; height: 18px; flex-shrink: 0; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  display: flex; align-items: center; color: var(--white);
  transition: background .4s, height .4s, box-shadow .4s;
}
.header.is-scrolled {
  background: rgba(255,255,255,.97); backdrop-filter: blur(10px); height: 70px;
  color: var(--navy); box-shadow: 0 6px 30px -18px rgba(15,31,58,.4);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; position: relative; z-index: 60; }
.logo__img { height: 46px; width: auto; transition: opacity .4s; }
.logo__img--dark { position: absolute; left: 0; top: 0; opacity: 0; }
.header.is-scrolled .logo__img--light { opacity: 0; }
.header.is-scrolled .logo__img--dark { opacity: 1; }
.header.is-scrolled.menu-open .logo__img--light { opacity: 1; }
.header.is-scrolled.menu-open .logo__img--dark { opacity: 0; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav__link { font-size: .78rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; position: relative; padding: 6px 0; }
.nav__link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px; background: var(--gold); transition: width .35s var(--ease); }
.nav__link:hover::after, .nav__link.is-active::after { width: 100%; }

.burger { display: none; width: 44px; height: 44px; position: relative; z-index: 60; }
.burger span { position: absolute; left: 10px; right: 10px; height: 2px; background: currentColor; transition: .35s var(--ease); }
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 28px; }
.burger.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- Redes sociales ---------- */
.social { display: flex; align-items: center; gap: 10px; }
.social a { display: grid; place-items: center; transition: color .3s, background .3s, border-color .3s, transform .3s var(--ease); }
.social svg { width: 16px; height: 16px; }
.social a:hover { transform: translateY(-2px); }
.social--nav { gap: 4px; padding-left: 18px; border-left: 1px solid rgba(255,255,255,.25); }
.header.is-scrolled .social--nav { border-color: var(--beige-2); }
.social--nav a { width: 32px; height: 32px; border-radius: 50%; }
.social--nav a:hover { color: var(--gold); }
.social--dark { margin-top: 30px; }
.social--dark a { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--gold); color: var(--navy); }
.social--dark a:hover { background: var(--navy); border-color: var(--navy); color: var(--gold-2); }
.social--pill { justify-content: center; flex-wrap: wrap; gap: 12px; }
.social--pill a { display: inline-flex; gap: 10px; padding: 12px 22px; border: 1px solid var(--navy); border-radius: 40px; font-size: .74rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--navy); }
.social--pill a:hover { background: var(--navy); color: var(--white); }

/* ---------- Portada ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; color: var(--white); overflow: hidden; background: var(--navy); }
.hero__slides, .hero__overlay { position: absolute; inset: 0; }
.hero__slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.6s ease; }
.hero__slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.08); transition: transform 7s linear; }
.hero__slide.is-active { opacity: 1; }
.hero__slide.is-active img { transform: scale(1); }
.hero__overlay { background: linear-gradient(100deg, rgba(10,22,44,.93) 0%, rgba(15,31,58,.74) 45%, rgba(15,31,58,.2) 100%); }
.hero__content { position: relative; z-index: 2; padding: 140px 0 110px; }
.hero__title { font-family: var(--serif); font-weight: 600; font-size: clamp(2.6rem, 6.2vw, 5rem); line-height: 1.04; max-width: 780px; margin-bottom: 24px; }
.hero__title em { color: var(--gold-2); font-style: italic; display: block; }
.hero__lead { max-width: 540px; font-size: 1.05rem; color: #d4dae6; margin-bottom: 36px; font-weight: 300; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__trust { list-style: none; display: flex; flex-wrap: wrap; gap: 14px 34px; margin-top: 46px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.15); max-width: 640px; }
.hero__trust li { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: #c9d1df; }
.hero__trust strong { font-family: var(--serif); font-size: 1.6rem; color: var(--gold-2); letter-spacing: 0; margin-right: 6px; vertical-align: -3px; }
.hero__dots { position: absolute; z-index: 3; left: 50%; bottom: 22px; transform: translateX(-50%); display: flex; gap: 6px; }
.hero__dots button { width: 44px; height: 44px; position: relative; }
.hero__dots button::after { content: ""; position: absolute; left: 8px; right: 8px; top: 21px; height: 2px; background: rgba(255,255,255,.35); transition: .4s; }
.hero__dots button.is-active::after { background: var(--gold); left: 0; right: 0; }

/* ---------- Confianza ---------- */
.trust { background: var(--navy); color: #dfe4ee; padding: 46px 0; border-top: 1px solid rgba(197,160,89,.3); }
.trust__grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; }
.trust__item { display: flex; gap: 14px; align-items: flex-start; padding: 6px 22px; border-left: 1px solid rgba(255,255,255,.1); }
.trust__item:first-child { border-left: 0; padding-left: 0; }
.trust__num { font-family: var(--serif); font-size: 3.6rem; line-height: .9; color: var(--gold-2); font-weight: 600; }
.trust__icon { width: 42px; height: 42px; flex-shrink: 0; border: 1px solid var(--gold); border-radius: 50%; display: grid; place-items: center; color: var(--gold-2); }
.trust__icon svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.trust__item h2 { font-family: var(--serif); font-size: 1.22rem; line-height: 1.15; color: var(--white); font-weight: 600; margin-bottom: 4px; }
.trust__item p { font-size: .8rem; color: var(--muted-light); line-height: 1.5; }

/* ---------- Pestañas y galería ---------- */
.tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; }
.tab { padding: 11px 22px; font-size: .74rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--beige-2); border-radius: 40px; transition: .3s; }
.tab:hover { color: var(--navy); border-color: var(--gold); }
.tab.is-active { background: var(--navy); color: var(--white); border-color: var(--navy); }

.gallery { columns: 3; column-gap: 16px; }
.gallery__item { break-inside: avoid; margin-bottom: 16px; position: relative; overflow: hidden; background: var(--beige); }
.gallery__item[hidden] { display: none; }
.gallery__item a { display: block; cursor: zoom-in; }
.gallery__item img { width: 100%; height: auto; transition: transform 1s var(--ease); }
.gallery__item:hover img { transform: scale(1.05); }
.gallery__item figcaption {
  position: absolute; inset: auto 0 0; padding: 48px 18px 16px; pointer-events: none;
  background: linear-gradient(transparent, rgba(10,22,44,.88));
  color: var(--white); font-size: .86rem; font-weight: 500; line-height: 1.4;
}
.gallery__item figcaption span { display: block; font-size: .62rem; letter-spacing: .22em; text-transform: uppercase; color: var(--gold-2); font-weight: 600; margin-bottom: 3px; }

/* ---------- Visor ---------- */
.lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(8,16,32,.95); display: flex; align-items: center; justify-content: center; padding: 30px 70px; }
.lightbox[hidden] { display: none; }
.lightbox figure { display: flex; flex-direction: column; align-items: center; max-height: 100%; }
.lightbox img { max-height: calc(100vh - 120px); max-width: 100%; width: auto; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.lightbox figcaption { color: var(--gold-2); margin-top: 14px; font-family: var(--serif); font-size: 1.3rem; font-style: italic; text-align: center; }
.lightbox__close { position: absolute; top: 14px; right: 20px; font-size: 2.6rem; color: var(--white); width: 48px; height: 48px; line-height: 1; }
.lightbox__nav { position: absolute; top: 50%; transform: translateY(-50%); font-size: 3rem; color: var(--gold-2); width: 56px; height: 72px; line-height: 1; }
.lightbox__nav--prev { left: 8px; }
.lightbox__nav--next { right: 8px; }

/* ---------- Remodelación ---------- */
.remodel { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(40px, 6vw, 80px); align-items: center; }
.services { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 22px 30px; margin-top: 34px; }
.services li { font-size: .88rem; color: var(--muted-light); padding-top: 16px; border-top: 1px solid rgba(220,189,124,.3); }
.services strong { display: block; font-family: var(--serif); font-size: 1.35rem; color: var(--white); font-weight: 600; margin-bottom: 2px; }
.remodel__photos { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.remodel__photos img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
.remodel__photos img:last-child { margin-top: 48px; }

.process { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; margin-top: 80px; text-align: center; }
.process::before { content: ""; position: absolute; top: 26px; left: 10%; right: 10%; height: 1px; background: linear-gradient(90deg, transparent, var(--gold), transparent); }
.process li { position: relative; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.process span { width: 52px; height: 52px; border-radius: 50%; background: var(--navy); border: 1px solid var(--gold); display: grid; place-items: center; font-family: var(--serif); font-size: 1.4rem; color: var(--gold-2); margin-bottom: 12px; position: relative; }
.process strong { color: var(--white); font-weight: 600; font-size: .92rem; }
.process small { color: #9aa6bd; font-size: .8rem; }
.process li:last-child span { background: var(--gold); color: var(--navy); }

.cta-band { margin-top: 70px; padding: 34px 40px; border: 1px solid rgba(220,189,124,.35); display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band p { font-family: var(--serif); font-size: 1.5rem; font-style: italic; color: var(--white); max-width: 560px; line-height: 1.35; }

/* ---------- Videos ---------- */
.testimonial { display: grid; grid-template-columns: minmax(0, 360px) 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; max-width: 960px; margin: 0 auto; }
.testimonial__video { position: relative; }
.testimonial__video::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; border: 1px solid var(--gold); }
.testimonial__video video { position: relative; width: 100%; aspect-ratio: 9 / 16; object-fit: cover; background: var(--navy); box-shadow: var(--shadow); }
.testimonial__text blockquote { font-family: var(--serif); font-style: italic; font-size: clamp(2rem, 4vw, 2.8rem); line-height: 1.15; color: var(--navy); margin-bottom: 18px; }
.testimonial__text p { color: var(--muted); margin-bottom: 14px; }
.testimonial__text .testimonial__note { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-dark); font-weight: 600; margin-bottom: 26px; }

.reels { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; max-width: 1000px; margin: 0 auto; }
.reel { position: relative; cursor: pointer; overflow: hidden; background: var(--navy); }
.reel video { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; }
.reel::after {
  content: ""; position: absolute; left: 50%; top: 45%; width: 54px; height: 54px; transform: translate(-50%, -50%);
  border-radius: 50%; background: rgba(15,31,58,.55) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23dcbd7c' d='M8 5v14l11-7z'/%3E%3C/svg%3E") no-repeat 55% 50% / 24px;
  border: 1px solid rgba(220,189,124,.7); transition: opacity .3s;
}
.reel.is-playing::after { opacity: 0; }
.reel figcaption { position: absolute; inset: auto 0 0; padding: 40px 14px 14px; background: linear-gradient(transparent, rgba(10,22,44,.85)); color: var(--white); font-size: .78rem; font-weight: 500; line-height: 1.35; }

/* ---------- Nosotros ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 90px); align-items: center; }
.about__media { position: relative; max-width: 480px; }
.about__media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; position: relative; }
.about__media::before { content: ""; position: absolute; inset: 22px -22px -22px 22px; border: 1px solid var(--gold); }
.about__seal { position: absolute; right: -30px; bottom: 40px; background: var(--white); color: var(--navy); border-top: 2px solid var(--gold); padding: 22px 26px; box-shadow: var(--shadow); }
.about__seal strong { display: block; font-family: var(--serif); font-size: 3.2rem; color: var(--gold-dark); line-height: 1; }
.about__seal span { font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; }
.about__text p { color: var(--muted); margin-bottom: 16px; }
.about__text p strong { color: var(--navy); }
.checks { list-style: none; margin: 24px 0 32px; display: grid; gap: 12px; }
.checks li { padding-left: 34px; position: relative; font-weight: 500; color: var(--navy); font-size: .93rem; }
.checks li::before { content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--gold); background: radial-gradient(var(--gold) 0 3px, transparent 4px); }

/* ---------- Contacto ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.contact__info > p { color: var(--muted); margin-bottom: 30px; }
.contact__list { list-style: none; display: grid; gap: 18px; }
.contact__list li { display: flex; flex-direction: column; padding-bottom: 16px; border-bottom: 1px solid var(--sand); color: var(--navy); font-weight: 500; }
.contact__list span { font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--gold-dark); font-weight: 600; margin-bottom: 2px; }
.contact__list a:hover { color: var(--gold-dark); }

.form { background: var(--white); padding: clamp(26px, 4vw, 44px); box-shadow: var(--shadow); display: grid; gap: 16px; border-top: 3px solid var(--gold); }
.form h3 { font-family: var(--serif); font-size: 1.9rem; line-height: 1.2; color: var(--navy); font-weight: 600; }
.form label { display: grid; gap: 6px; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--navy); }
.form input[type=text], .form input[type=tel], .form select, .form textarea {
  font: inherit; font-size: .95rem; letter-spacing: 0; text-transform: none; font-weight: 400;
  padding: 13px 14px; border: 1px solid #e3dccf; background: #fcfaf6; border-radius: var(--radius); color: var(--ink); width: 100%;
  transition: border-color .3s, box-shadow .3s;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(197,160,89,.18); }
.form .is-invalid { border-color: #b3403c !important; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form__choice { border: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form__choice legend { font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--navy); margin-bottom: 8px; }
.form__choice label { display: block; cursor: pointer; }
.form__choice input { position: absolute; opacity: 0; }
.form__choice span { display: block; text-align: center; padding: 12px 10px; border: 1px solid #e3dccf; border-radius: var(--radius); font-size: .72rem; letter-spacing: .08em; transition: .3s; }
.form__choice input:checked + span { background: var(--navy); color: var(--white); border-color: var(--navy); }
.form__choice input:focus-visible + span { outline: 2px solid var(--gold); outline-offset: 2px; }
.form__error { color: #b3403c; font-size: .85rem; }
.form__note { font-size: .78rem; color: var(--muted); text-align: center; }

/* ---------- Footer ---------- */
.footer { background: var(--navy-deep); color: var(--muted-light); padding: 76px 0 0; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer h4 { color: var(--white); font-size: .74rem; letter-spacing: .22em; text-transform: uppercase; margin-bottom: 18px; font-weight: 600; }
.footer__grid > div > a:not(.footer__logo) { display: block; font-size: .9rem; margin-bottom: 10px; transition: color .3s; }
.footer__grid > div > a:hover { color: var(--gold-2); }
.footer__logo img { height: 44px; width: auto; }
.footer__claim { font-family: var(--serif); font-style: italic; font-size: 1.25rem; color: var(--gold-2); margin-top: 22px; max-width: 280px; line-height: 1.4; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0 90px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .78rem; }

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 80;
  display: flex; align-items: center; gap: 10px; background: var(--wa); color: var(--white);
  height: 60px; padding: 0 20px; border-radius: 60px; box-shadow: 0 12px 30px -8px rgba(37,211,102,.6);
  transition: transform .3s var(--ease);
}
.wa-float:hover { transform: scale(1.05); }
.wa-float svg { width: 28px; height: 28px; }
.wa-float__label { font-size: .78rem; font-weight: 600; letter-spacing: .06em; }
.wa-float::before { content: ""; position: absolute; inset: 0; border-radius: inherit; border: 2px solid var(--wa); animation: pulse 2.4s infinite; }
@keyframes pulse { 0% { opacity: .8; transform: scale(1); } 100% { opacity: 0; transform: scale(1.35); } }

/* ---------- Animación de entrada ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1140px) {
  :root { --header-h: 70px; }
  .burger { display: block; }
  .nav {
    position: fixed; inset: 0; background: var(--navy); color: var(--white);
    flex-direction: column; justify-content: center; gap: 24px;
    transform: translateX(100%); visibility: hidden; transition: transform .5s var(--ease), visibility .5s;
  }
  .nav.is-open { transform: none; visibility: visible; }
  .nav__link { font-size: 1rem; }
  .social--nav { border: 0 !important; padding: 0; gap: 12px; }
  .social--nav a { width: 44px; height: 44px; border: 1px solid rgba(220,189,124,.5); color: var(--gold-2); }
  .social--nav svg { width: 18px; height: 18px; }
  .header.menu-open { color: var(--white); backdrop-filter: none; background: transparent; box-shadow: none; }
  .trust__grid { grid-template-columns: repeat(3, 1fr); row-gap: 26px; }
  .trust__item:nth-child(4) { border-left: 0; padding-left: 0; }
  .reels { grid-template-columns: repeat(5, 62%); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px; }
  .reel { scroll-snap-align: start; }
}

@media (max-width: 900px) {
  .gallery { columns: 2; column-gap: 12px; }
  .gallery__item { margin-bottom: 12px; }
  .remodel, .about, .contact, .testimonial { grid-template-columns: 1fr; }
  .testimonial__video { max-width: 340px; margin: 0 auto; }
  .about__media { margin: 0 auto 20px; }
  .about__seal { right: 10px; }
  .process { grid-template-columns: 1fr; gap: 22px; max-width: 320px; margin: 70px auto 0; text-align: left; }
  .process::before { top: 0; bottom: 0; left: 26px; right: auto; width: 1px; height: auto; background: linear-gradient(transparent, var(--gold), transparent); }
  .process li { display: grid; grid-template-columns: 52px 1fr; column-gap: 18px; align-items: center; }
  .process span { grid-row: span 2; margin: 0; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .reels { grid-template-columns: repeat(5, 42%); }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { width: calc(100% - 32px); }
  .logo__img { height: 36px; }
  .hero__content { padding: 116px 0 96px; }
  .hero__actions .btn { width: 100%; }
  .hero__trust { gap: 10px 22px; margin-top: 34px; }
  .trust__grid { grid-template-columns: 1fr 1fr; }
  .trust__item, .trust__item:nth-child(4) { border-left: 0; padding: 0; }
  .trust__item:nth-child(5) { grid-column: span 2; }
  .trust__num { font-size: 3rem; }
  .services { grid-template-columns: 1fr; }
  .remodel__photos img:last-child { margin-top: 28px; }
  .gallery { column-gap: 10px; }
  .gallery__item { margin-bottom: 10px; }
  .gallery__item figcaption { font-size: .7rem; padding: 26px 9px 8px; }
  .gallery__item figcaption span { display: none; }
  .reels { grid-template-columns: repeat(5, 70%); }
  .form__row, .form__choice { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .about__media::before, .testimonial__video::before { inset: 12px -10px -12px 10px; }
  .cta-band { padding: 26px 22px; margin-top: 50px; }
  .cta-band p { font-size: 1.3rem; }
  .cta-band .btn, .about__text .btn, .testimonial__text .btn, .section__cta .btn { width: 100%; }
  .lightbox { padding: 60px 10px; }
  .lightbox__nav { top: auto; bottom: 10px; transform: none; }
  .wa-float { height: 56px; width: 56px; padding: 0; justify-content: center; right: 16px; bottom: 16px; }
  .wa-float__label { display: none; }
  .btn { white-space: normal; text-align: center; }
}

/* ---------- Página 404 ---------- */
.page-404 { background: var(--navy); color: #dfe4ee; }
.notfound { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 40px 20px; }
.notfound__logo { height: 48px; width: auto; margin-bottom: 40px; }
.notfound h1 { font-family: var(--serif); font-size: clamp(2.2rem, 6vw, 3.4rem); color: var(--white); font-weight: 600; line-height: 1.1; margin-bottom: 14px; }
.notfound p { max-width: 460px; color: var(--muted-light); margin-bottom: 32px; }
.notfound__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

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