/* ========================================
   THE3DBLOCK - SISTEMA DE DISEÑO COMPLETO
   Basado en Manual de Marca 2025
   ======================================== */

/* CSS Variables - Paleta de Colores Oficial */
:root {
    /* Colores Primarios */
    --azul-naval: #1B263B;
    --blanco-tecnico: #FAFAFA;
    
    /* Colores Secundarios */
    --rojo-potencia: #BB0000;
    --gris-platino: #E8E8E8;
    --verde-sostenible: #4A5D23;
    
    /* Colores de Apoyo */
    --gris-carbon: #36454F;
    --plata-metalica: #C0C0C0;
    
    /* Tipografía */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'Source Code Pro', monospace;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Bordes */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(27, 38, 59, 0.1);
    --shadow-md: 0 5px 20px rgba(27, 38, 59, 0.1);
    --shadow-lg: 0 15px 40px rgba(27, 38, 59, 0.15);
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;
}

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--azul-naval);
    background: var(--blanco-tecnico);
    overflow-x: hidden;
}

/* Utilidades */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--azul-naval) 0%, var(--gris-carbon) 100%);
    padding: var(--spacing-sm) 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: background var(--transition-normal);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--blanco-tecnico);
    text-decoration: none;
    position: relative;
    transition: all var(--transition-normal);
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--rojo-potencia);
    transition: width var(--transition-normal);
}

.logo:hover::after {
    width: 100%;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--blanco-tecnico);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-normal);
    position: relative;
}

.nav-links a:hover {
    color: var(--rojo-potencia);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--blanco-tecnico);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--azul-naval) 0%, var(--gris-carbon) 50%, var(--azul-naval) 100%);
    color: var(--blanco-tecnico);
    padding: 8rem var(--spacing-lg) 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(45deg, var(--blanco-tecnico), var(--gris-platino));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    margin-bottom: var(--spacing-lg);
    color: var(--gris-platino);
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    font-size: 1rem;
    min-width: 200px;
    text-align: center;
}

.btn-primary {
    background: var(--rojo-potencia);
    color: var(--blanco-tecnico);
}

.btn-primary:hover {
    background: #990000;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(187, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--blanco-tecnico);
    border: 2px solid var(--blanco-tecnico);
}

.btn-secondary:hover {
    background: var(--blanco-tecnico);
    color: var(--azul-naval);
    transform: translateY(-2px);
}

/* Floating Elements */
.floating-element {
    position: absolute;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg); 
    }
    50% { 
        transform: translateY(-20px) rotate(5deg); 
    }
}

/* Sections */
.services, .product-lines {
    padding: 6rem var(--spacing-lg);
}

.services {
    background: var(--blanco-tecnico);
}

.product-lines {
    background: linear-gradient(135deg, var(--gris-platino) 0%, white 100%);
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--azul-naval);
}

.section-subtitle {
    text-align: center;
    font-size: clamp(1.1rem, 2vw, 1.2rem);
    color: var(--gris-carbon);
    margin-bottom: var(--spacing-xxl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.service-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border-top: 4px solid var(--gris-platino);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--rojo-potencia);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--azul-naval), var(--gris-carbon));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--blanco-tecnico);
    font-size: 2rem;
    font-weight: bold;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--azul-naval);
}

.service-card p {
    color: var(--gris-carbon);
    line-height: 1.6;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.product-card {
    background: white;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.product-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--azul-naval), var(--gris-carbon));
    color: var(--blanco-tecnico);
}

.product-header.enterprise {
    background: linear-gradient(135deg, var(--azul-naval), var(--plata-metalica));
}

.product-header.education {
    background: linear-gradient(135deg, var(--rojo-potencia), var(--azul-naval));
}

.product-header.studio {
    background: linear-gradient(135deg, var(--verde-sostenible), var(--azul-naval));
}

.product-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.product-subtitle {
    opacity: 0.9;
    font-size: 1rem;
}

.product-content {
    padding: var(--spacing-lg);
}

.product-features {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.product-features li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--verde-sostenible);
    font-weight: bold;
}

/* Stats Section */
.stats {
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: var(--azul-naval);
    color: var(--blanco-tecnico);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-sm);
}

.stat-number {
    font-size: clamp(2.5rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--rojo-potencia);
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-top: var(--spacing-xs);
}

/* CTA Section */
.cta-section {
    padding: 6rem var(--spacing-lg);
    background: linear-gradient(135deg, var(--rojo-potencia) 0%, var(--azul-naval) 100%);
    color: var(--blanco-tecnico);
    text-align: center;
}

.cta-section h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    font-size: clamp(1.1rem, 2vw, 1.2rem);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--azul-naval);
    color: var(--blanco-tecnico);
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-sm);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--rojo-potencia);
}

.footer-section p {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--gris-platino);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-section a:hover {
    color: var(--blanco-tecnico);
}

.footer-bottom {
    border-top: 1px solid var(--gris-carbon);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-sm);
    text-align: center;
    color: var(--gris-platino);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 6rem var(--spacing-sm) 4rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .services, .product-lines {
        padding: 4rem var(--spacing-sm);
    }
    
    .stats {
        padding: 3rem var(--spacing-sm);
    }
    
    .cta-section {
        padding: 4rem var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .services-grid,
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .floating-element,
    .cta-section {
        display: none;
    }
    
    body {
        color: black;
        background: white;
    }
    
    .hero {
        background: white;
        color: black;
        padding: 2rem 0;
    }
}