/* ============================================================
   Expostructura — main.css
   ============================================================ */

:root {
	--bg: #ffffff;
	--fg: #0f172a;
	--muted: #64748b;
	--border: #e5e7eb;
	--surface: #f8fafc;
	--accent: #ea580c;
	--accent-dark: #c2410c;
	--container: 1200px;
	--radius: 6px;
	--gap: 1.5rem;
	--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);
	--shadow-md: 0 4px 12px rgba(15, 23, 42, .08);
	--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Inter, "Helvetica Neue", sans-serif;
	--font-display: var(--font-sans);
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	font-family: var(--font-sans);
	color: var(--fg);
	background: var(--bg);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; color: var(--fg); margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }
ul { padding-left: 1.25em; }

/* Accessibility */
.screen-reader-text {
	position: absolute !important;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0,0,0,0);
	white-space: nowrap; border: 0;
}
.skip-link {
	position: absolute; left: -9999px; top: 0;
	background: var(--fg); color: #fff; padding: .5rem 1rem; z-index: 1000;
}
.skip-link:focus { left: 0; }

/* Layout */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 3.5rem 0; }
.section__header { text-align: center; max-width: 720px; margin: 0 auto 2rem; }
.section__header h2 { margin-bottom: .5rem; }
.section__header p { color: var(--muted); }

/* Header */
.site-header {
	background: var(--bg);
	border-bottom: 1px solid var(--border);
	position: sticky; top: 0; z-index: 100;
}
.site-header__inner {
	display: flex; align-items: center; justify-content: space-between;
	padding: .9rem 1.25rem; gap: 1rem;
}
.site-header__brand .site-title { font-weight: 700; font-size: 1.25rem; color: var(--fg); }
.site-header__brand .custom-logo { max-height: 44px; width: auto; }

.site-nav { display: flex; align-items: center; gap: 1.5rem; }
.site-nav__list { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.25rem; }
.site-nav__list a { color: var(--fg); font-weight: 500; }
.site-nav__list a:hover { color: var(--accent); text-decoration: none; }
.site-nav__list .current-menu-item > a { color: var(--accent); }
.site-nav__phone {
	padding: .45rem .9rem; border: 1px solid var(--border); border-radius: var(--radius);
	color: var(--fg); font-weight: 600; font-size: .95rem;
}

.site-header__toggle {
	display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; padding: 0;
}
.site-header__toggle span { display: block; height: 2px; background: var(--fg); margin: 6px auto; width: 26px; transition: transform .2s, opacity .2s; }

@media (max-width: 820px) {
	.site-header__toggle { display: block; }
	.site-nav {
		position: absolute; top: 100%; left: 0; right: 0;
		background: var(--bg); border-bottom: 1px solid var(--border);
		flex-direction: column; align-items: stretch; gap: 0;
		padding: .5rem 1.25rem 1rem;
		display: none;
	}
	.site-nav.is-open { display: flex; }
	.site-nav__list { flex-direction: column; gap: 0; }
	.site-nav__list li { border-bottom: 1px solid var(--border); }
	.site-nav__list a { display: block; padding: .8rem 0; }
	.site-nav__phone { margin-top: .75rem; text-align: center; }
}

/* Hero */
.hero {
	color: #fff;
	background-size: cover;
	background-position: center;
	padding: 6rem 0;
}
.hero__inner { max-width: 800px; }
.hero__title { color: #fff; font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
.hero__subtitle { font-size: 1.15rem; margin-bottom: 2rem; opacity: .95; }
.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Buttons */
.btn {
	display: inline-flex; align-items: center; justify-content: center;
	padding: .7rem 1.4rem; border-radius: var(--radius);
	font-weight: 600; font-size: 1rem; cursor: pointer;
	background: #fff; color: var(--fg); border: 1px solid var(--border);
	text-decoration: none; transition: transform .1s, box-shadow .15s, background .15s;
}
.btn:hover { box-shadow: var(--shadow-md); text-decoration: none; }
.btn--accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn--ghost:hover { background: rgba(255,255,255,.12); }
.btn--lg { padding: .9rem 1.8rem; font-size: 1.05rem; }

/* Grid de cards */
.grid-cards {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
	gap: var(--gap);
}
.grid-cards--3 { grid-template-columns: repeat(3, 1fr); }
.grid-cards--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
	.grid-cards--3, .grid-cards--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
	.grid-cards--3, .grid-cards--4 { grid-template-columns: 1fr; }
}

/* Cards */
.card {
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	overflow: hidden;
	display: flex; flex-direction: column;
	transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card__media { display: block; overflow: hidden; aspect-ratio: 4 / 3; background: var(--surface); }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.card:hover .card__media img { transform: scale(1.04); }
.card__body { padding: 1rem 1.1rem 1.25rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.card__title { margin: 0; font-size: 1.1rem; }
.card__title a { color: var(--fg); }
.card__title a:hover { color: var(--accent); text-decoration: none; }
.card__specs { list-style: none; padding: 0; margin: 0; font-size: .9rem; color: var(--muted); }
.card__specs li span { color: var(--fg); font-weight: 500; }
.card__excerpt { color: var(--muted); font-size: .95rem; }
.card__meta { color: var(--muted); font-size: .9rem; margin: 0; }
.card__link { margin-top: auto; color: var(--accent); font-weight: 600; font-size: .95rem; }
.card--cat { text-align: center; min-height: 140px; justify-content: center; align-items: center; }
.card--cat:hover { text-decoration: none; }
.card--cat .card__body { align-items: center; }

/* Sections */
.section--categorias { background: var(--surface); }
.section--beneficios { background: var(--surface); }
.section--cta { background: var(--fg); color: #fff; }
.section--cta h2 { color: #fff; }

/* Beneficios */
.beneficio { text-align: center; padding: 1.5rem; }
.beneficio__icon { font-size: 2.5rem; margin-bottom: .75rem; }
.beneficio__title { margin-bottom: .4rem; }
.beneficio__text { color: var(--muted); font-size: .95rem; }

/* CTA block */
.cta-block {
	display: flex; align-items: center; justify-content: space-between;
	gap: 2rem; flex-wrap: wrap;
}
.cta-block__text h2 { margin-bottom: .4rem; }
.cta-block__text p { color: rgba(255,255,255,.85); margin: 0; }
.cta-block__actions { display: flex; gap: .75rem; flex-wrap: wrap; }

/* Catalog filters */
.catalog-filters {
	display: flex; gap: .5rem; flex-wrap: wrap;
	margin-bottom: 2rem; justify-content: center;
}
.catalog-filters__item {
	padding: .5rem 1rem; border: 1px solid var(--border); border-radius: 999px;
	color: var(--fg); font-weight: 500; font-size: .95rem;
	background: #fff;
}
.catalog-filters__item:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
.catalog-filters__item.is-active { background: var(--fg); color: #fff; border-color: var(--fg); }

/* Estructura single */
.estructura-single__grid {
	display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem;
	align-items: start;
}
@media (max-width: 900px) { .estructura-single__grid { grid-template-columns: 1fr; } }
.estructura-single__media img { border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.estructura-single__breadcrumb { color: var(--muted); font-size: .9rem; margin: 0 0 .25rem; }
.estructura-single__breadcrumb a { color: var(--muted); }
.estructura-single__title { margin-top: 0; }
.estructura-single__specs {
	display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem 1rem;
	margin: 1.25rem 0; padding: 1rem 1.25rem;
	background: var(--surface); border-radius: var(--radius);
}
.estructura-single__specs dt { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.estructura-single__specs dd { margin: 0; font-weight: 600; }
.estructura-single__ctas { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.estructura-single__ctas .btn--ghost { color: var(--fg); border-color: var(--border); }
.estructura-single__form { padding-top: 3rem; }

/* Proyecto single */
.proyecto-single__header { text-align: center; margin-bottom: 2rem; }
.proyecto-single__meta {
	list-style: none; padding: 0; display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center;
	color: var(--muted); font-size: .95rem;
}
.proyecto-single__media { margin: 0 0 2rem; }
.proyecto-single__media img { border-radius: var(--radius); }
.proyecto-single__gallery { margin-top: 2rem; }
.proyecto-single__gallery img { border-radius: var(--radius); aspect-ratio: 4 / 3; object-fit: cover; }

/* Contacto layout */
.contacto-layout {
	display: grid; grid-template-columns: 1fr 1.5fr; gap: 3rem;
	align-items: start;
}
@media (max-width: 900px) { .contacto-layout { grid-template-columns: 1fr; } }
.contact-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.contact-list li { padding: .5rem 0; border-bottom: 1px solid var(--border); }
.contact-list li:last-child { border: 0; }
.contact-list strong { color: var(--muted); font-weight: 600; margin-right: .5rem; }

/* Form cotizar */
.form-cotizar__success {
	padding: 1rem 1.25rem; background: #ecfdf5; border: 1px solid #10b981; color: #065f46;
	border-radius: var(--radius); margin-bottom: 1.25rem;
}
.form-cotizar__error {
	padding: 1rem 1.25rem; background: #fef2f2; border: 1px solid #ef4444; color: #991b1b;
	border-radius: var(--radius); margin-bottom: 1.25rem;
}
.form-cotizar__form { display: flex; flex-direction: column; gap: 1rem; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.form-cotizar__form label { display: flex; flex-direction: column; gap: .35rem; font-size: .95rem; }
.form-cotizar__form label span { color: var(--muted); font-weight: 500; font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.form-cotizar__form input,
.form-cotizar__form textarea {
	font: inherit; width: 100%;
	padding: .65rem .8rem; border: 1px solid var(--border); border-radius: var(--radius);
	background: #fff; color: var(--fg);
}
.form-cotizar__form input:focus, .form-cotizar__form textarea:focus {
	outline: 2px solid var(--accent); outline-offset: 1px;
	border-color: var(--accent);
}
.form-cotizar__fieldset {
	border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem;
}
.form-cotizar__fieldset legend { font-weight: 600; padding: 0 .5rem; }
.form-cotizar__checks {
	display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
	gap: .5rem; max-height: 220px; overflow-y: auto;
}
.form-cotizar__check { display: flex; align-items: center; gap: .5rem; font-size: .95rem; cursor: pointer; }
.form-cotizar__check input { width: auto; }

/* Page article */
.page-article { max-width: 800px; margin: 0 auto; }
.page-article__header { margin-bottom: 1.5rem; }
.page-article__media img { border-radius: var(--radius); margin-bottom: 1.5rem; }

/* Prose */
.prose h2 { margin-top: 2rem; }
.prose h3 { margin-top: 1.5rem; }
.prose ul { padding-left: 1.5em; }
.prose img { border-radius: var(--radius); margin: 1.5rem 0; }

/* Footer */
.site-footer { background: var(--fg); color: #cbd5e1; margin-top: 4rem; }
.site-footer__grid {
	display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem;
	padding: 3rem 1.25rem 2rem;
}
@media (max-width: 820px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .site-footer__grid { grid-template-columns: 1fr; } }
.site-footer__title { color: #fff; font-size: 1rem; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: .04em; }
.site-footer__desc { color: #94a3b8; max-width: 400px; }
.site-footer__list { list-style: none; padding: 0; margin: 0; }
.site-footer__list li { padding: .25rem 0; }
.site-footer__list a { color: #cbd5e1; }
.site-footer__list a:hover { color: var(--accent); text-decoration: none; }
.site-footer__social { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .4rem; }
.site-footer__social a { color: #cbd5e1; }
.site-footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 1.25rem 0; font-size: .9rem; }
.site-footer__bottom p { margin: 0; }
.site-footer__legal { color: #94a3b8; margin-top: .5rem; font-size: .85rem; }

/* Search form */
.search-form { display: flex; gap: .5rem; }
.search-form__field { flex: 1; padding: .65rem .8rem; border: 1px solid var(--border); border-radius: var(--radius); }

/* Pagination */
.nav-links {
	display: flex; justify-content: center; gap: .5rem; margin-top: 2.5rem;
}
.nav-links .page-numbers {
	padding: .45rem .85rem; border-radius: var(--radius); border: 1px solid var(--border);
	color: var(--fg); background: #fff;
}
.nav-links .page-numbers.current { background: var(--fg); color: #fff; border-color: var(--fg); }
.nav-links a.page-numbers:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }