/* ============================================================
   Asegura Tu Casa (ATC) — Frontend
   HTML5 + CSS3 (Grid, Flexbox, variables, media queries)
   Estetica clara y profesional (paleta del logo: azul + azul marino).
   ============================================================ */

/* ---------- Variables / Design tokens ---------- */
:root {
    --bg:            #ffffff;
    --bg-alt:        #f2f6fc;
    --surface:       #ffffff;
    --surface-2:     #eaf1fb;
    --line:          rgba(31, 21, 96, 0.12);
    --text:          #16162b;
    --muted:         #5a6474;
    /* Acento principal: azul vivo del logo (se mantiene el nombre --gold para no romper referencias) */
    --gold:          #1786f0;
    --gold-soft:     #0f6fd0;
    /* Color secundario: azul marino / indigo profundo del logo */
    --navy:          #1f1560;

    --font-serif: 'Space Grotesk', system-ui, sans-serif;
    --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

    --maxw: 1200px;
    --radius: 4px;
    --shadow: 0 20px 50px rgba(31, 21, 96, 0.15);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; line-height: 1.15; letter-spacing: -0.02em; margin: 0; }

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow { max-width: 780px; }

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--gold);
    color: #ffffff;
    padding: 10px 16px;
    z-index: 1000;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- Botones ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    font-family: var(--font-sans);
    font-size: 0.86rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.35s var(--ease);
}
.btn-primary {
    background: var(--gold);
    color: #ffffff;
}
.btn-primary:hover { background: var(--gold-soft); transform: translateY(-2px); }
.btn-ghost {
    background: transparent;
    color: #ffffff;
    border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-soft); }
.btn-block { width: 100%; }

.eyebrow {
    font-size: 0.78rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--gold);
    margin: 0 0 14px;
}

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 78px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border: 1px solid var(--gold);
    color: var(--gold);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    border-radius: 50%;
    flex: none;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: 0.04em; }
.brand-tagline { font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); }

.main-nav { display: flex; align-items: center; }
.nav-menu { display: flex; align-items: center; gap: 34px; }
.nav-menu a {
    font-size: 0.82rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    transition: color 0.3s var(--ease);
}
.nav-menu a:hover { color: var(--text); }
.nav-cta {
    color: var(--gold) !important;
    border: 1px solid var(--line);
    padding: 10px 20px;
    border-radius: var(--radius);
}
.nav-cta:hover { border-color: var(--gold); }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    width: 26px;
    height: 2px;
    background: var(--text);
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 92vh;
    padding: 80px 0;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(31,21,96,0.72) 0%, rgba(31,21,96,0.88) 60%, rgba(31,21,96,0.95) 100%),
        url('../img/hero.png') center / cover no-repeat;
    transform: scale(1.05);
}
.hero-inner { position: relative; max-width: 820px; }
.hero-title {
    font-size: clamp(2.8rem, 7vw, 5.4rem);
    letter-spacing: 0.01em;
    margin-bottom: 22px;
    color: #ffffff;
}
.hero-title em { color: #6bb6ff; font-style: italic; }
.hero-lead {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.82);
    max-width: 560px;
    margin: 0 0 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 60px; }
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 46px;
    padding-top: 34px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.hero-stats strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 2.4rem;
    color: #ffffff;
}
.hero-stats span { font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255, 255, 255, 0.7); }

/* ---------- Secciones ---------- */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 680px; margin: 0 0 56px; }
.section-title { font-size: clamp(2rem, 4vw, 3rem); }

/* ---------- Servicios ---------- */
.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
}
.servicio-card {
    background: var(--bg);
    padding: 44px 34px;
    transition: background 0.4s var(--ease);
}
.section-alt .servicio-card { background: var(--bg-alt); }
.servicio-card:hover { background: var(--surface); }
.servicio-index {
    font-family: var(--font-serif);
    font-size: 1rem;
    color: var(--gold);
    letter-spacing: 0.1em;
}
.servicio-card h3 { font-size: 1.5rem; margin: 18px 0 12px; }
.servicio-card p { color: var(--muted); font-size: 0.98rem; margin: 0; }

/* ---------- Galeria ---------- */
.galeria-filtros {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}
.filtro {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--muted);
    padding: 9px 20px;
    border-radius: 40px;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s var(--ease);
}
.filtro:hover { color: var(--text); border-color: var(--muted); }
.filtro.is-active { background: var(--gold); color: #ffffff; border-color: var(--gold); }

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 260px;
    gap: 16px;
}
.galeria-item {
    position: relative;
    margin: 0;
    overflow: hidden;
    border-radius: var(--radius);
    cursor: pointer;
}
.galeria-item.is-destacado { grid-row: span 2; }
.galeria-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
}
.galeria-item:hover img { transform: scale(1.06); }
.galeria-item figcaption {
    position: absolute;
    inset: auto 0 0 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 22px 20px 18px;
    background: linear-gradient(0deg, rgba(15,10,50,0.92), rgba(15,10,50,0));
    color: #ffffff;
    opacity: 0;
    transform: translateY(12px);
    transition: all 0.4s var(--ease);
}
.galeria-item:hover figcaption { opacity: 1; transform: translateY(0); }
.galeria-cat { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); }
.galeria-titulo { font-family: var(--font-serif); font-size: 1.3rem; }
.galeria-item.is-hidden { display: none; }
.empty-note {
    padding: 40px;
    text-align: center;
    color: var(--muted);
    border: 1px dashed var(--line);
    border-radius: var(--radius);
}

/* ---------- Proceso ---------- */
.proceso-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}
.proceso-card {
    padding: 36px 30px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.proceso-card:hover { transform: translateY(-6px); border-color: var(--gold); }
.proceso-num {
    font-family: var(--font-serif);
    font-size: 2.6rem;
    color: var(--gold);
    display: block;
    margin-bottom: 14px;
}
.proceso-card h3 { font-size: 1.4rem; margin-bottom: 10px; }
.proceso-card p { color: var(--muted); font-size: 0.95rem; margin: 0; }

/* ---------- FAQ ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-pregunta {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 26px 0;
    background: none;
    border: 0;
    text-align: left;
    color: var(--text);
    font-family: var(--font-serif);
    font-size: 1.3rem;
    cursor: pointer;
}
.faq-icono {
    position: relative;
    flex: none;
    width: 20px;
    height: 20px;
}
.faq-icono::before,
.faq-icono::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 2px;
    background: var(--gold);
    transform: translate(-50%, -50%);
    transition: transform 0.3s var(--ease);
}
.faq-icono::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.is-open .faq-icono::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-respuesta {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
}
.faq-respuesta p { color: var(--muted); margin: 0 0 26px; max-width: 640px; }

/* ---------- Contacto ---------- */
.contacto-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    align-items: start;
}
.contacto-texto { color: var(--muted); max-width: 400px; }
.contacto-datos { margin-top: 32px; display: grid; gap: 18px; }
.contacto-datos li { display: flex; flex-direction: column; gap: 2px; border-top: 1px solid var(--line); padding-top: 16px; }
.contacto-datos span { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); }
.contacto-datos a { color: var(--text); }

.contacto-form-wrap {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 40px;
}
.contacto-form { display: grid; gap: 22px; }
.campo { display: flex; flex-direction: column; gap: 8px; }
.campo-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.campo label { font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.opcional { text-transform: none; letter-spacing: 0; }
.campo input,
.campo textarea {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color 0.3s var(--ease);
}
.campo input:focus,
.campo textarea:focus { outline: none; border-color: var(--gold); }
.campo textarea { resize: vertical; }
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }

.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 22px;
    font-size: 0.95rem;
    border: 1px solid transparent;
}
.alert-exito { background: rgba(23, 134, 240, 0.10); border-color: var(--gold); color: var(--gold-soft); }
.alert-error { background: rgba(200, 80, 80, 0.12); border-color: #c85050; color: #e79b9b; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--line); padding-top: 70px; }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}
.footer-brand .brand-name { font-size: 1.6rem; }
.footer-brand p { color: var(--muted); max-width: 340px; margin-top: 14px; }
.footer-col h4 { font-size: 0.82rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); margin-bottom: 18px; font-family: var(--font-sans); }
.footer-col ul { display: grid; gap: 12px; }
.footer-col a, .footer-col li { color: var(--muted); font-size: 0.95rem; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 24px 30px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.85rem;
}
.footer-admin { color: var(--muted); }
.footer-admin:hover { color: var(--gold); }

/* ---------- WhatsApp flotante ---------- */
.whatsapp-float {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 200;
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: #25d366;
    color: #0b3d24;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s var(--ease);
}
.whatsapp-float:hover { transform: scale(1.08); }

/* ---------- Lightbox ---------- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: rgba(8, 9, 12, 0.94);
}
.lightbox.is-open { display: flex; }
.lightbox img { max-width: 90vw; max-height: 78vh; border-radius: var(--radius); box-shadow: var(--shadow); }
.lightbox-caption { position: absolute; bottom: 34px; left: 0; right: 0; text-align: center; color: #ffffff; }
.lightbox-caption strong { display: block; font-family: var(--font-serif); font-size: 1.4rem; }
.lightbox-caption span { color: rgba(255, 255, 255, 0.7); font-size: 0.95rem; }
.lightbox-close {
    position: absolute;
    top: 24px;
    right: 28px;
    background: none;
    border: 0;
    color: #ffffff;
    font-size: 2.4rem;
    line-height: 1;
    cursor: pointer;
}

/* ---------- Animacion reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .galeria-grid { grid-template-columns: repeat(2, 1fr); }
    .contacto-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
    body { font-size: 16px; }
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed;
        inset: 78px 0 auto 0;
        flex-direction: column;
        gap: 0;
        background: var(--bg-alt);
        border-bottom: 1px solid var(--line);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s var(--ease);
    }
    .nav-menu.is-open { max-height: 400px; }
    .nav-menu li { width: 100%; text-align: center; }
    .nav-menu a { display: block; padding: 18px; border-top: 1px solid var(--line); }
    .nav-cta { border: 0; }
    .section { padding: 72px 0; }
    .galeria-grid { grid-template-columns: 1fr; grid-auto-rows: 220px; }
    .galeria-item.is-destacado { grid-row: span 1; }
    .campo-row { grid-template-columns: 1fr; }
    .contacto-form-wrap { padding: 26px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .hero-stats { gap: 28px; }
}

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