/* ============================================
   SICA Construcciones - Estilos Corporativos (Sitio Público)
   Soluciones Integrales en Construcción Atlacomulco
   ============================================

   Hoja de estilos principal del sitio público (landing, proyecto, FAQ).

   Paleta de colores:
     --navy:  #132236  (azul marino corporativo — fondos, navbar, footer)
     --teal:  #50C8C6  (verde azulado — color de acento, botones, links)
     --gold:  alias de --teal (mantiene compatibilidad con versiones anteriores)

   Secciones del CSS:
     - Navegación (navbar fija con blur)
     - Hero (video de fondo, título, CTA)
     - Secciones genéricas (títulos, containers)
     - About / Nosotros (grid con logo y estadísticas)
     - Proyectos / Portafolio (tarjetas con logo y badge de estado)
     - Proceso / Modelo de negocio (5 pasos horizontales)
     - Alianzas estratégicas (cards con logos)
     - Contacto (formulario + info)
     - Footer
     - Responsive (breakpoints: 1024px, 768px, 480px)

   Dependencias externas:
     - Leaflet CSS (mapa) — cargado desde CDN en index.php
     - Google Fonts: Montserrat — cargado en index.php
   ============================================ */

:root {
    --navy: #132236;
    --navy-light: #1b3050;
    --teal: #50C8C6;
    --teal-light: #6FD9D7;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
}

/* Alias para mantener compatibilidad */
:root {
    --gold: var(--teal);
    --gold-light: var(--teal-light);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 80px; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
}

/* ---------- NAVEGACIÓN ---------- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(19, 34, 54, 0.98);
    backdrop-filter: blur(10px);
    padding: 0 2rem; height: 72px;
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 2px solid var(--gold);
    transition: all 0.3s;
}

.navbar.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.3); }

.navbar .logo {
    display: flex; align-items: center; gap: 0.75rem;
    text-decoration: none; color: var(--white);
}
.navbar .logo-img {
    height: 44px; width: auto; display: block;
}

.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a {
    color: var(--gray-300); text-decoration: none;
    font-size: 0.9rem; font-weight: 500;
    transition: color 0.3s; position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--gold); transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }

.nav-toggle { display: none; background: none; border: none; color: var(--white); font-size: 1.5rem; cursor: pointer; }

/* ---------- HERO ---------- */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--navy) 0%, #1b3350 50%, var(--navy-light) 100%);
    display: flex; align-items: center; justify-content: center;
    padding: 6rem 2rem 4rem;
    position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-container {
    position: relative; z-index: 1;
    display: grid; grid-template-columns: 1.6fr 1fr;
    gap: 2rem; align-items: center;
    max-width: 1300px; width: 100%;
}
.hero-video {
    position: relative; border-radius: 16px; overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
    background: #000;
    width: 100% !important; height: 0 !important;
    padding-bottom: 56.25%; /* 16:9 */
}
.hero-video iframe {
    position: absolute !important;
    top: 0; left: 0;
    width: 100% !important; height: 100% !important;
    border: 0;
}
.hero-content { text-align: left; }
.hero-badge {
    display: inline-block; background: rgba(80,200,198,0.12);
    color: var(--teal); padding: 0.5rem 1.5rem; border-radius: 50px;
    font-size: 0.85rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
    margin-bottom: 2rem; border: 1px solid rgba(80,200,198,0.25);
}
.hero h1 {
    font-size: 2.2rem; font-weight: 800; color: var(--white);
    margin-bottom: 1.5rem; line-height: 1.2;
}
.hero h1 span { color: var(--teal); }
.hero p {
    font-size: 1rem; color: var(--gray-300); margin-bottom: 2.5rem;
    max-width: 560px; line-height: 1.7;
}
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
    display: inline-block; padding: 0.85rem 2rem; border-radius: 8px;
    font-weight: 600; text-decoration: none; font-size: 0.95rem;
    transition: all 0.3s; cursor: pointer; border: none;
}
.btn-primary { background: var(--gold); color: var(--navy); }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(200,164,92,0.4); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.85rem; }

/* ---------- SECCIONES ---------- */
.section { padding: 6rem 2rem; }
.section-dark { background: var(--navy); color: var(--white); }
.section-light { background: var(--gray-50); }
.container { max-width: 1200px; margin: 0 auto; }

.section-title {
    text-align: center; margin-bottom: 4rem;
}
.section-title .overline {
    display: block; color: var(--gold); font-weight: 600; letter-spacing: 2px;
    text-transform: uppercase; font-size: 0.85rem; margin-bottom: 0.75rem;
}
.section-title h2 {
    font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem;
}
.section-dark .section-title h2 { color: var(--white); }
.section-light .section-title h2 { color: var(--navy); }
.section-title .divider {
    width: 60px; height: 3px; background: var(--gold); margin: 0 auto;
}

/* ---------- QUIÉNES SOMOS ---------- */
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.about-image {
    display: flex; align-items: center; justify-content: center;
    padding: 1.5rem;
}
.about-logo { max-width: 520px; width: 100%; height: auto; }
.about-text h3 { font-size: 1.75rem; font-weight: 700; color: var(--navy); margin-bottom: 1rem; }
.about-text p { color: var(--gray-600); margin-bottom: 1rem; }
.about-stats { display: flex; gap: 2rem; margin-top: 2rem; }
.stat-item { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 800; color: var(--navy); }
.stat-label { font-size: 0.85rem; color: var(--gray-600); }

/* ---------- PROYECTOS ---------- */
.projects-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.project-card {
    background: var(--white); border-radius: 16px; overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}
.project-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(0,0,0,0.15); }
.project-card-image {
    min-height: 180px; position: relative; overflow: hidden;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: #fff; padding: 1.5rem;
}

.card-logo-container {
    width: 100%; height: 110px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 0; overflow: hidden;
}
.card-logo-container a { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }
.card-logo-container img {
    max-width: 90%; max-height: 100%;
    width: auto; height: auto; object-fit: contain;
}

.project-card-badge {
    position: absolute; top: 1rem; right: 1rem;
    padding: 0.35rem 1rem; border-radius: 50px;
    font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
}
.badge-building { background: #3b82f6; color: #fff; }
.badge-planning { background: #f59e0b; color: #1e293b; }
.badge-done { background: #22c55e; color: #fff; }

.project-card-body { padding: 1.75rem; }
.project-card-body h3 { font-size: 1.35rem; font-weight: 700; color: var(--navy); margin-bottom: 0.35rem; }
.project-card-body .location {
    color: var(--gold); font-size: 0.9rem; font-weight: 500; margin-bottom: 1rem;
    display: flex; align-items: center; gap: 0.4rem;
}
.project-card-body p { color: var(--gray-600); font-size: 0.95rem; line-height: 1.7; }

/* ---------- PROCESO / MODELO ---------- */
.process-grid {
    display: flex; align-items: flex-start; justify-content: center;
    gap: 0.5rem; flex-wrap: wrap;
}
.process-step {
    text-align: center; flex: 1; min-width: 160px; max-width: 210px;
    padding: 1.5rem 1rem;
    background: rgba(255,255,255,0.04); border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s;
}
.process-step:hover { border-color: var(--teal); transform: translateY(-4px); background: rgba(80,200,198,0.06); }
.process-number {
    display: inline-block; width: 32px; height: 32px; line-height: 32px;
    background: var(--teal); color: var(--navy); border-radius: 50%;
    font-weight: 900; font-size: 0.9rem; margin-bottom: 0.75rem;
}
.process-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.process-step h3 { font-size: 1rem; color: var(--white); margin-bottom: 0.5rem; font-weight: 700; }
.process-step p { font-size: 0.85rem; color: var(--gray-400); line-height: 1.5; }
.process-arrow {
    font-size: 1.5rem; color: var(--teal); font-weight: 700;
    display: flex; align-items: center; padding-top: 2.5rem;
}

/* ---------- ALIANZAS ---------- */
.alianzas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    align-items: stretch;
}

.alianza-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.alianza-logo-container {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.alianza-logo-container a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.alianza-logo-img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

.alianza-rol {
    background-color: #50C8C6;
    color: #0F1D30;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    padding: 6px 16px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 1.25rem;
    letter-spacing: 0.5px;
}

.alianza-card p:last-child { color: var(--gray-600); font-size: 0.95rem; line-height: 1.7; }

.alianza-card p a {
    color: inherit;
    text-decoration: underline;
    text-decoration-color: rgba(0,0,0,0.2);
    transition: color 0.2s ease, text-decoration-color 0.2s ease;
}
.alianza-card p a:hover {
    color: #132236;
    text-decoration-color: #50C8C6;
}
.alianza-logo-container a { display: block; }

/* ---------- CONTACTO ---------- */
.contact-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
.contact-info h3 { font-size: 1.75rem; font-weight: 700; color: var(--navy); margin-bottom: 1.5rem; }
.contact-info p { color: var(--gray-600); margin-bottom: 2rem; }
.contact-detail { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1.5rem; }
.contact-detail .icon {
    width: 44px; height: 44px; background: var(--navy); border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-size: 1.2rem;
}
.contact-detail h4 { font-size: 0.95rem; color: var(--navy); margin-bottom: 0.2rem; }
.contact-detail span { font-size: 0.9rem; color: var(--gray-600); }

.contact-form {
    background: var(--white); padding: 2.5rem; border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.08);
}
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 0.4rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 0.75rem 1rem; border: 1.5px solid var(--gray-200);
    border-radius: 8px; font-size: 0.95rem; font-family: inherit;
    transition: border-color 0.3s; background: var(--gray-50);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none; border-color: var(--gold);
}

/* ---------- FOOTER ---------- */
.footer {
    background: var(--navy); color: var(--gray-400); padding: 3rem 2rem;
    text-align: center; border-top: 2px solid var(--gold);
}
.footer .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-logo-img { height: 70px; width: auto; }
.footer p { font-size: 0.9rem; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .hero-container { gap: 2rem; }
    .hero h1 { font-size: 2.5rem; }
    .process-arrow { display: none; }
}
@media (max-width: 768px) {
    .nav-links { display: none; position: fixed; top: 72px; left: 0; right: 0; background: var(--navy); flex-direction: column; padding: 2rem; gap: 1.5rem; z-index: 999; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 0.95rem; }
    .hero-container { grid-template-columns: 1fr; gap: 2rem; }
    .hero-video { order: 2; }
    .hero-content { order: 1; text-align: center; }
    .hero-content p { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .projects-grid { grid-template-columns: 1fr; }
    .process-grid { flex-direction: column; align-items: center; }
    .process-step { max-width: 100%; }
    .process-arrow { display: none; }
    .contact-grid { grid-template-columns: 1fr; }
    .section { padding: 4rem 1.5rem; }
    .section-title h2 { font-size: 1.8rem; }
}
@media (max-width: 480px) {
    .navbar { padding: 0 1rem; height: 60px; }
    .navbar .logo-img { height: 32px; }
    .hero { padding: 5rem 1rem 2rem; }
    .hero h1 { font-size: 1.6rem; }
    .hero p { font-size: 0.9rem; }
    .hero-badge { font-size: 0.7rem; padding: 0.35rem 1rem; letter-spacing: 1px; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; text-align: center; }
    .btn { padding: 0.7rem 1.5rem; font-size: 0.9rem; }
    .section { padding: 3rem 1rem; }
    .section-title h2 { font-size: 1.5rem; }
    .section-title .overline { font-size: 0.75rem; }
    .about-stats { flex-wrap: wrap; gap: 1.5rem; }
    .stat-number { font-size: 1.5rem; }
    .about-image { padding: 2rem 1rem; }
    .about-logo { max-width: 220px; }
    .about-text h3 { font-size: 1.3rem; }
    .project-card-body { padding: 1.25rem; }
    .project-card-body h3 { font-size: 1.15rem; }
    .project-card-image { min-height: 150px; padding: 1rem; }
    .card-logo-container { height: 90px; }
    .valores-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
    .alianza-card { padding: 1.5rem 1rem; }
    .contact-form { padding: 1.5rem; }
    .form-group input, .form-group textarea, .form-group select { padding: 0.6rem 0.75rem; font-size: 0.9rem; }
    .form-row { grid-template-columns: 1fr; }
    .footer { padding: 2rem 1rem; }
    .footer .container { flex-direction: column; text-align: center; }
    .footer-logo-img { height: 45px; }
    .footer p { font-size: 0.8rem; }
    .nav-links { top: 60px; padding: 1.5rem; gap: 1rem; }
    .nav-links a { font-size: 1rem; }
    .contact-detail .icon { width: 36px; height: 36px; }
    .contact-info h3 { font-size: 1.3rem; }
}