/* ============================================
   SICA Construcciones - Estilos Corporativos
   Soluciones Integrales en Construcción Atlacomulco
   ============================================ */

:root {
    --navy: #0F1D30;
    --navy-light: #152540;
    --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; }

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(10, 22, 40, 0.95);
    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-isotype {
    width: 36px; height: 44px; flex-shrink: 0;
}
.navbar .logo-isotype svg { width: 100%; height: 100%; display: block; }
.navbar .logo-text-block {
    display: flex; flex-direction: column; line-height: 1;
}
.navbar .logo-sica {
    font-family: 'Montserrat', 'Segoe UI', sans-serif;
    font-weight: 800; font-size: 1.3rem; letter-spacing: 3px;
    color: var(--white);
}
.navbar .logo-sub {
    font-family: 'Montserrat', 'Segoe UI', sans-serif;
    font-weight: 800; font-size: 0.58rem; letter-spacing: -0.5px;
    color: var(--teal); margin-top: 1px;
}

.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%, #1a2d4a 50%, var(--navy-light) 100%);
    display: flex; align-items: center; justify-content: center;
    text-align: 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-content { position: relative; z-index: 1; max-width: 800px; }
.hero-badge {
    display: inline-block; background: rgba(200, 164, 92, 0.15);
    color: var(--gold); 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(200, 164, 92, 0.3);
}
.hero h1 {
    font-size: 3.5rem; font-weight: 800; color: var(--white);
    margin-bottom: 1.5rem; line-height: 1.2;
}
.hero h1 span { color: var(--gold); }
.hero p {
    font-size: 1.25rem; color: var(--gray-300); margin-bottom: 2.5rem;
    max-width: 600px; margin-left: auto; margin-right: auto;
}
.hero-buttons { display: flex; gap: 1rem; justify-content: center; 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 {
    background: linear-gradient(135deg, var(--navy-light), var(--navy));
    border-radius: 16px; padding: 3rem;
    text-align: center; border-left: 4px solid var(--teal);
}
.about-isotype { margin-bottom: 1rem; }
.about-image .big-sica {
    font-size: 3.5rem; font-weight: 900; color: var(--white); line-height: 1;
    font-family: 'Montserrat', 'Segoe UI', sans-serif;
    letter-spacing: 8px;
}
.about-image .company-name {
    font-size: 1.1rem; font-weight: 700; color: var(--teal); margin-top: 0.5rem;
}
.about-image .company-legal {
    font-size: 0.8rem; color: var(--gray-400); margin-top: 0.25rem;
}
.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 {
    height: 220px; position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    font-size: 4rem;
}
.card-img-1 { background: linear-gradient(135deg, #1e3a5f, #2d5a87); }
.card-img-2 { background: linear-gradient(135deg, #2d5a3f, #1e3a2f); }
.card-img-3 { background: linear-gradient(135deg, #5a3f1e, #3a2f1e); }

.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;
}

/* ---------- VALORES ---------- */
.valores-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem;
}
.valor-card {
    text-align: center; padding: 2.5rem 1.5rem;
    background: rgba(255,255,255,0.05); border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s;
}
.valor-card:hover { transform: translateY(-4px); border-color: var(--gold); background: rgba(200,164,92,0.05); }
.valor-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.valor-card h3 { font-size: 1.1rem; color: var(--white); margin-bottom: 0.5rem; }
.valor-card p { font-size: 0.9rem; color: var(--gray-400); }

/* ---------- 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 { font-weight: 700; color: var(--white); }
.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; }
    .valores-grid { grid-template-columns: repeat(2, 1fr); }
    .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; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .hero h1 { font-size: 2.25rem; }
    .hero p { font-size: 1rem; }
    .projects-grid, .valores-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; }
}