/* ==========================================================================
   BMATE - Constructora Oficial Open Book (Inspirado en Buildmate)
   ========================================================================== */

:root {
    /* Paleta Oficial */
    --bm-blue: #0f86b6;          /* Azul técnico de obra */
    --bm-blue-hover: #179cd4;    /* Cyan constructivo */
    --bm-blue-light: #eaf5fa;    /* Fondo suave azulado */
    --bm-blue-glow: rgba(15, 134, 182, 0.22);
    
    --bm-navy: #192033;          /* Dark Slate de construcción sólida */
    --bm-navy-dark: #121726;     /* Fondo de obra oscuro */
    --bm-navy-card: #202940;     /* Bloques oscuros */
    
    --bm-orange: #f26522;        /* Acento constructivo / Seguridad / Grúa */
    --bm-orange-light: rgba(242, 101, 34, 0.12);
    
    --text-main: #1e293b;        /* Texto principal */
    --text-muted: #57657a;       /* Texto secundario */
    --text-light: #f8fafc;       /* Texto blanco */
    
    --bg-white: #ffffff;
    --bg-slate: #f6f8fb;         /* Gris técnico muy claro */
    --bg-alt: #edf1f6;
    
    --border-light: #e2e8f0;
    --border-navy: #2d3854;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Montserrat', var(--font-sans);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px rgba(25, 32, 51, 0.08);
    --shadow-lg: 0 20px 45px rgba(25, 32, 51, 0.16);
    
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset y Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background-color: var(--bg-white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    color: var(--bm-navy);
    line-height: 1.25;
    font-weight: 700;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1220px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 96px 0;
}

.text-center {
    text-align: center;
}

/* Header & Barra de Navegación */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: #ffffff;
    box-shadow: 0 2px 14px rgba(25, 32, 51, 0.07);
    transition: var(--transition);
}

.nav-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logotipo Propio BMATE: Isotipo de Muro / Escuadra / Edificio */
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-symbol {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.brand-text-block {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1.55rem;
    letter-spacing: -0.5px;
    color: var(--bm-navy);
    line-height: 0.95;
}

.brand-name span {
    color: var(--bm-blue);
}

.brand-tagline {
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 800;
    color: var(--bm-orange);
    margin-top: 3px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--bm-navy);
    font-size: 0.94rem;
    font-weight: 600;
}

.nav-links a:hover {
    color: var(--bm-blue);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.mobile-toggle span {
    width: 26px;
    height: 3px;
    background-color: var(--bm-navy);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 24px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
    flex-direction: column;
    gap: 16px;
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    color: var(--bm-navy);
    font-size: 1.05rem;
    font-weight: 600;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-light);
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.92rem;
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: var(--bm-blue);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--bm-blue-glow);
}

.btn-primary:hover {
    background-color: var(--bm-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 134, 182, 0.4);
    color: #ffffff;
}

.btn-orange {
    background-color: var(--bm-orange);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(242, 101, 34, 0.25);
}

.btn-orange:hover {
    background-color: #d95314;
    transform: translateY(-2px);
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(242, 101, 34, 0.4);
}

.btn-navy {
    background-color: var(--bm-navy);
    color: #ffffff;
}

.btn-navy:hover {
    background-color: var(--bm-navy-dark);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    border-color: #ffffff;
    color: #ffffff;
}

.btn-outline-white:hover {
    background: #ffffff;
    color: var(--bm-navy);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* Badges */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    border-radius: var(--radius-sm);
    background: var(--bm-blue-light);
    color: var(--bm-blue);
    margin-bottom: 14px;
}

.section-badge.badge-white {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.section-badge.badge-orange {
    background: var(--bm-orange-light);
    color: var(--bm-orange);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, rgba(18, 23, 38, 0.94) 0%, rgba(25, 32, 51, 0.96) 100%), 
                url('https://images.unsplash.com/photo-1541888946425-d0fbb1861593?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero h1 {
    color: #ffffff;
    font-size: clamp(2.3rem, 4.4vw, 3.6rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 22px;
}

.hero h1 .highlight-blue {
    color: #38bdf8;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: #cbd5e1;
    margin-bottom: 34px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

.hero-checks {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 24px;
}

.check-line {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: #e2e8f0;
}

.check-dot {
    width: 20px;
    height: 20px;
    background: var(--bm-blue);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

/* Tarjeta Destacada de Obra en Hero */
.hero-card-box {
    background: var(--bm-navy-card);
    border: 1px solid var(--border-navy);
    padding: 34px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.hero-card-header {
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 16px;
}

.hero-card-header h3 {
    color: #ffffff;
    font-size: 1.35rem;
    margin-bottom: 6px;
}

.hero-card-header p {
    color: #94a3b8;
    font-size: 0.88rem;
}

.metric-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.metric-item {
    background: rgba(0, 0, 0, 0.25);
    padding: 16px;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--bm-blue);
}

.metric-val {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 800;
    color: #38bdf8;
    line-height: 1;
    margin-bottom: 4px;
}

.metric-lbl {
    font-size: 0.78rem;
    color: #cbd5e1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Encabezados de Sección */
.section-header {
    max-width: 780px;
    margin: 0 auto 54px;
}

.section-title {
    font-size: clamp(2rem, 3.2vw, 2.6rem);
    margin-bottom: 16px;
    font-weight: 800;
}

.section-desc {
    font-size: 1.08rem;
    color: var(--text-muted);
}

/* Grillas */
.grid {
    display: grid;
    gap: 28px;
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Sección Pilares de Constructora */
.diff-card {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 34px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    border-top: 4px solid transparent;
}

.diff-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-top-color: var(--bm-blue);
}

.diff-icon {
    width: 54px;
    height: 54px;
    background: var(--bm-blue-light);
    color: var(--bm-blue);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.diff-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.diff-card p {
    color: var(--text-muted);
    font-size: 0.94rem;
}

/* Sección Comparativa Open Book */
.section-alt {
    background-color: var(--bg-slate);
}

.table-responsive {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow-x: auto;
    box-shadow: var(--shadow-md);
}

.comp-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.comp-table th, .comp-table td {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.95rem;
}

.comp-table th {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    background: #f1f5f9;
    color: var(--bm-navy);
}

.comp-table th.col-bmate {
    background: var(--bm-blue);
    color: #ffffff;
}

.comp-table td.col-bmate {
    background: rgba(15, 134, 182, 0.05);
    font-weight: 600;
    color: var(--bm-navy);
}

.check-green {
    color: var(--bm-blue);
    font-weight: bold;
    margin-right: 6px;
}

/* Obras y Proyectos Realizados */
.project-card {
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.project-img {
    height: 240px;
    overflow: hidden;
    position: relative;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-img img {
    transform: scale(1.05);
}

.project-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--bm-navy);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
}

.project-body {
    padding: 24px;
}

.project-body h4 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.project-meta {
    font-size: 0.82rem;
    color: var(--bm-blue);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.project-body p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* Proceso Constructivo */
.section-navy {
    background: var(--bm-navy);
    color: #ffffff;
}

.section-navy .section-title {
    color: #ffffff;
}

.section-navy .section-desc {
    color: #94a3b8;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.process-box {
    background: var(--bm-navy-card);
    border: 1px solid var(--border-navy);
    padding: 30px 24px;
    border-radius: var(--radius-sm);
    border-top: 4px solid var(--bm-blue);
    position: relative;
}

.process-num {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.15);
    line-height: 1;
    margin-bottom: 14px;
}

.process-box h4 {
    color: #ffffff;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.process-box p {
    color: #cbd5e1;
    font-size: 0.88rem;
}

/* Sección de Contacto */
.section-contact {
    background: var(--bg-slate);
    padding: 100px 0;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    gap: 50px;
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.contact-info-panel {
    background: var(--bm-navy);
    color: #ffffff;
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-info-panel h2 {
    color: #ffffff;
    font-size: 2.1rem;
    margin-bottom: 16px;
}

.contact-info-panel p {
    color: #94a3b8;
    font-size: 1rem;
    margin-bottom: 30px;
}

.contact-data-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.data-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.data-icon {
    width: 38px;
    height: 38px;
    background: rgba(15, 134, 182, 0.2);
    color: #38bdf8;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.data-text h5 {
    color: #ffffff;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.data-text span {
    color: #94a3b8;
    font-size: 0.88rem;
}

.form-panel {
    padding: 50px 40px;
}

.form-panel h3 {
    font-size: 1.65rem;
    margin-bottom: 8px;
}

.form-panel p {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 26px;
}

.form-grid {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field-group label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--bm-navy);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.field-group input,
.field-group select,
.field-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-light);
    background: #f8fafc;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    transition: var(--transition);
}

.field-group input:focus,
.field-group select:focus,
.field-group textarea:focus {
    outline: none;
    background: #ffffff;
    border-color: var(--bm-blue);
    box-shadow: 0 0 0 3px var(--bm-blue-glow);
}

.privacy-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.privacy-check input {
    margin-top: 3px;
    accent-color: var(--bm-blue);
}

.form-feedback {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    text-align: center;
}

.form-feedback.success {
    background: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
}

.form-feedback.error {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

/* Footer Oficial */
.footer {
    background: var(--bm-navy);
    color: #94a3b8;
    padding: 70px 0 30px;
    border-top: 4px solid var(--bm-blue);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer h5 {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 18px;
}

.footer ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer ul a {
    color: #94a3b8;
    font-size: 0.9rem;
}

.footer ul a:hover {
    color: #38bdf8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    font-size: 0.85rem;
    color: #64748b;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .footer-top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .form-row-2 {
        grid-template-columns: 1fr;
    }

    .process-grid {
        grid-template-columns: 1fr;
    }

    .contact-info-panel, .form-panel {
        padding: 34px 20px;
    }
}