/**
 * Sunverge - Estilos Principales
 * Mobile-first responsive design
 * Paleta de colores azules profesionales
 */

/* ========================================
   CSS Variables / Custom Properties
======================================== */
:root {
    /* Colores principales - Azules profesionales */
    --primary-50: #e6f2ff;
    --primary-100: #b3d9ff;
    --primary-200: #80bfff;
    --primary-300: #4da6ff;
    --primary-400: #1a8cff;
    --primary-500: #0073e6;
    --primary-600: #005cb3;
    --primary-700: #004480;
    --primary-800: #002d4d;
    --primary-900: #00162b;
    
    /* Color principal y acento */
    --color-primary: #0066cc;
    --color-primary-dark: #004d99;
    --color-primary-light: #3399ff;
    --color-accent: #00b4d8;
    --color-accent-light: #90e0ef;
    
    /* Neutros */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Semánticos */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Espaciado */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Bordes */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

ul, ol {
    list-style: none;
}

/* ========================================
   Utilidades
======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-6);
    }
}

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

/* ========================================
   Tipografía
======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

@media (min-width: 768px) {
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-4xl); }
    h3 { font-size: var(--text-2xl); }
    h4 { font-size: var(--text-xl); }
}

.lead {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    line-height: 1.7;
}

@media (min-width: 768px) {
    .lead {
        font-size: var(--text-xl);
    }
}

/* ========================================
   Botones
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-dark));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-white);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-block {
    width: 100%;
}

/* ========================================
   Header / Navegación
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.logo:hover {
    color: var(--color-primary-dark);
}

.logo-icon {
    font-size: var(--text-2xl);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: var(--z-fixed);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    padding: 100px var(--space-6) var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    box-shadow: var(--shadow-2xl);
    transition: right var(--transition-base);
}

.nav-menu.active {
    right: 0;
}

.nav-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-weight: 500;
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    background: var(--primary-50);
    color: var(--color-primary);
}

.nav-link--cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    text-align: center;
    margin-top: var(--space-4);
}

.nav-link--cta:hover {
    background: var(--color-primary-dark);
}

@media (min-width: 992px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        flex-direction: row;
        align-items: center;
        padding: 0;
        background: transparent;
        box-shadow: none;
    }
    
    .nav-link {
        padding: var(--space-2) var(--space-3);
    }
    
    .nav-link--cta {
        margin-top: 0;
        margin-left: var(--space-2);
        padding: var(--space-2) var(--space-5);
    }
}

/* ========================================
   Hero Section
======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 45, 77, 0.9), rgba(0, 102, 204, 0.7));
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    padding: var(--space-20) 0;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--text-2xl);
    color: var(--color-white);
    margin-bottom: var(--space-6);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-title .highlight {
    color: var(--color-accent-light);
    display: block;
    margin-top: var(--space-2);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-4xl);
    }
}

@media (min-width: 992px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: var(--text-xl);
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
}

@media (min-width: 480px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.hero-scroll a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-white);
    font-size: var(--text-sm);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    animation: bounce 2s infinite;
}

.hero-scroll a:hover {
    opacity: 1;
    color: var(--color-white);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ========================================
   Secciones Generales
======================================== */
.section {
    padding: var(--space-16) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--space-24) 0;
    }
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-4);
    background: var(--primary-50);
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-title {
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   ¿Sabías que...? Section
======================================== */
.sabias-que {
    background: var(--color-gray-50);
}

.info-cards {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .info-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

.info-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.info-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.info-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
    color: var(--color-primary);
}

.info-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.info-card .stat {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.info-card p {
    color: var(--color-gray-600);
}

/* ========================================
   Sistema Section
======================================== */
.sistema-grid {
    display: grid;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 992px) {
    .sistema-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.sistema-image {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.sistema-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.sistema-image:hover img {
    transform: scale(1.05);
}

.sistema-content .section-title {
    margin-bottom: var(--space-6);
}

.feature-list {
    margin: var(--space-6) 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    font-size: var(--text-lg);
}

.feature-list li svg {
    flex-shrink: 0;
    color: var(--color-success);
    margin-top: 2px;
}

/* ========================================
   Producto Section
======================================== */
.producto {
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.producto-grid {
    display: grid;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 992px) {
    .producto-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.producto-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.producto-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.producto-feature:hover {
    transform: translateX(8px);
}

.feature-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.producto-feature h4 {
    margin-bottom: var(--space-1);
    color: var(--color-gray-800);
}

.producto-feature p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.producto-image {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.producto-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ========================================
   Proceso Section
======================================== */
.proceso {
    background: var(--color-white);
}

.proceso-timeline {
    display: grid;
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .proceso-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .proceso-timeline {
        grid-template-columns: repeat(4, 1fr);
    }
}

.proceso-step {
    position: relative;
    text-align: center;
}

.paso-numero {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--text-sm);
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.paso-content {
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    padding: var(--space-10) var(--space-6) var(--space-6);
    height: 100%;
    transition: all var(--transition-base);
}

.proceso-step:hover .paso-content {
    background: var(--primary-50);
    transform: translateY(-4px);
}

.paso-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.paso-content h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.paso-content p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.proceso-image {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.proceso-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ========================================
   Beneficios Section
======================================== */
.beneficios {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
}

.beneficios .section-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.beneficios .section-title {
    color: var(--color-white);
}

.beneficios-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .beneficios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .beneficios-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.beneficio-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    transition: all var(--transition-base);
}

.beneficio-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.beneficio-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.beneficio-card h4 {
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.beneficio-card p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.85);
}

/* ========================================
   Servicios Section
======================================== */
.servicios {
    background: var(--color-gray-50);
}

.servicios-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .servicios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .servicios-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.servicio-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.servicio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.servicio-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.servicio-card:hover .servicio-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
}

.servicio-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.servicio-card p {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
}

/* ========================================
   ¿Por qué elegirnos? Section
======================================== */
.porque {
    background: var(--color-white);
}

.porque-grid {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .porque-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .porque-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.porque-item {
    padding: var(--space-6);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

.porque-item:hover {
    background: var(--color-gray-50);
    padding-left: var(--space-8);
}

.porque-number {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--primary-100);
    margin-bottom: var(--space-2);
}

.porque-item h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.porque-item p {
    color: var(--color-gray-600);
}

/* ========================================
   Clientes Section
======================================== */
.clientes {
    background: var(--color-gray-50);
}

.clientes-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .clientes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .clientes-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.cliente-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.cliente-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.cliente-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.cliente-card:hover .cliente-image img {
    transform: scale(1.1);
}

.cliente-overlay {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
}

.cliente-tag {
    background: var(--color-accent);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: 600;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.cliente-content {
    padding: var(--space-5);
}

.cliente-content h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    color: var(--color-primary);
}

.cliente-content > p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--space-3);
}

.cliente-content ul {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.cliente-content ul li {
    padding: var(--space-1) 0;
    padding-left: var(--space-4);
    position: relative;
}

.cliente-content ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: bold;
}

/* ========================================
   Contacto Section
======================================== */
.contacto {
    background: var(--color-white);
}

.contacto-grid {
    display: grid;
    gap: var(--space-12);
}

@media (min-width: 992px) {
    .contacto-grid {
        grid-template-columns: 1fr 2fr;
    }
}

.contacto-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.info-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.info-item h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-1);
}

.info-item p,
.info-item a {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
}

.info-item a:hover {
    color: var(--color-primary);
}

/* Formulario */
.contacto-form {
    background: var(--color-gray-50);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-row {
    display: grid;
    gap: var(--space-5);
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--color-gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--primary-50);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-message {
    margin-top: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    display: none;
}

.form-message.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.form-message.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ========================================
   Footer
======================================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-brand .logo {
    margin-bottom: var(--space-4);
}

.footer-brand .logo-text {
    color: var(--color-white);
}

.footer-brand p {
    font-size: var(--text-sm);
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--color-white);
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-links a {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-contact p {
    font-size: var(--text-sm);
    line-height: 1.8;
}

.footer-contact a {
    color: var(--color-gray-400);
}

.footer-contact a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--text-sm);
}

/* ========================================
   Animaciones
======================================== */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Estados del Botón de Envío
======================================== */
.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   Accesibilidad
======================================== */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   Media Queries adicionales
======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}