/* ==========================================================================
   SERFECOM INTERNATIONAL - Sistema de Diseño Premium (Actualizado)
   ========================================================================== */

/* Importación de Fuentes Modernas de Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* Variables del Sistema de Diseño */
:root {
    /* Colores del Logo: Azul Corporativo y Naranja Vibrante */
    --color-primary: #0f356d;        /* Nuevo Azul Corporativo Profundo */
    --color-primary-light: #174787;  /* Azul Corporativo Medio */
    --color-secondary: #08172c;      /* Azul Profundo casi Negro para secciones oscuras */
    --color-accent: #f4771b;         /* Nuevo Naranja Vibrante del Logo */
    --color-accent-rgb: 244, 119, 27;
    --color-accent-hover: #d9620b;   /* Naranja más oscuro para hover */
    --color-accent-light: rgba(244, 119, 27, 0.08); /* Fondo naranja suave */
    --color-text-dark: #1e293b;      /* Texto sobre fondo claro */
    --color-text-muted: #64748b;     /* Gris slate */
    --color-text-light: #f8fafc;     /* Blanco grisáceo */
    --color-bg-light: #fafbfd;       /* Fondo claro premium */
    --color-bg-alt: #f1f5f9;         /* Gris de fondo alternativo */
    --color-border: #e2e8f0;         /* Bordes limpios */
    --color-success: #10b981;        /* Verde Limpieza / Éxito */
    
    /* Tipografía */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Efectos & Sombras */
    --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.12), 0 4px 8px -2px rgba(15, 23, 42, 0.06);
    --shadow-xl: 0 24px 48px -8px rgba(15, 23, 42, 0.16), 0 8px 16px -4px rgba(15, 23, 42, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.88);
    --glass-border: rgba(255, 255, 255, 0.5);
    
    /* Bordes y Transiciones */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Scrollbar Personalizada */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary-light);
    border: 2px solid var(--color-bg-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-dark);
    background-color: var(--color-bg-light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

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

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

/* ==========================================================================
   Estructuras & Componentes
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

.section {
    padding-top: 2.25rem; /* Reducido aún más para evitar espacios vacíos excesivos */
    padding-bottom: 2.25rem;
    position: relative;
}

@media (max-width: 768px) {
    .section {
        padding-top: 1.5rem;
        padding-bottom: 1.5rem;
    }
}

.section-title-wrap {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 1.5rem auto; /* Reducido aún más para mayor compacidad */
}

.section-subtitle {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: 0.85rem;
    display: inline-block;
    position: relative;
    padding-bottom: 5px;
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background-color: var(--color-accent);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    margin-top: 0.5rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
}

.section-desc {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

/* Botones Premium */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.25rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #a86240 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(198, 127, 92, 0.35);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #a86240 0%, var(--color-accent) 100%);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-normal);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(198, 127, 92, 0.45);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-white {
    background-color: #fff;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border);
}

.btn-white:hover {
    background-color: var(--color-bg-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Header & Navegación (Mejorado)
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    /* Cabecera blanca con un 60% de transparencia (40% opacidad) - 15% más transparente */
    background-color: rgba(255, 255, 255, 0.40); 
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.40); /* 60% transparente al hacer scroll */
    box-shadow: var(--shadow-md);
    border-bottom-color: rgba(15, 23, 42, 0.08);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 130px; /* Incrementado para dar más espacio al logo */
    transition: var(--transition-normal);
}

.header.scrolled .nav-wrapper {
    height: 90px; /* Incrementado para la cabecera scrolled compacta */
}

.logo-link {
    display: flex;
    align-items: center;
    padding: 5px 0;
}

.logo-img {
    height: 110px; /* Incrementado para mayor presencia visual */
    width: auto;
    object-fit: contain;
    transition: var(--transition-normal);
}

.header.scrolled .logo-img {
    height: 75px; /* Incrementado para la cabecera scrolled */
}



.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-primary-light); /* Color de texto oscuro para cabecera clara siempre */
    position: relative;
    padding: 0.5rem 0;
}

.header.scrolled .nav-link {
    color: var(--color-primary-light); /* Sigue siendo oscuro */
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2.5px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-accent);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
}

.header-socials {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 0.15rem;
}

.header-socials a {
    font-size: 0.95rem;
    color: var(--color-primary); /* Color corporativo azul más visible */
    opacity: 0.75;
    transition: var(--transition-fast);
}

.header-socials a:hover {
    color: var(--color-accent);
    opacity: 1;
    transform: translateY(-2px) scale(1.15);
}

.nav-buttons-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.call-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, #ff8c3a 100%); /* Gradiente más vibrante y llamativo */
    color: #fff !important;
    font-weight: 700;
    font-family: var(--font-heading);
    font-size: 0.88rem;
    padding: 0.55rem 1.35rem; /* Ajustado para mejor proporción */
    border-radius: var(--radius-full);
    box-shadow: 0 4px 15px rgba(244, 119, 27, 0.35); /* Sombra más llamativa */
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.call-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 20px rgba(244, 119, 27, 0.5);
    filter: brightness(1.1);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    background-color: rgba(15, 53, 109, 0.08); /* Más contrastado */
    padding: 0.3rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(15, 53, 109, 0.12);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.lang-link {
    font-size: 0.8rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--color-primary) !important; /* Color principal */
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
}

.lang-link:hover {
    color: var(--color-accent) !important;
    background-color: rgba(255, 255, 255, 0.9);
}

.lang-link.active {
    color: #fff !important;
    background-color: var(--color-accent); /* Color de acento naranja vibrante para destacar el activo */
    box-shadow: 0 2px 6px rgba(244, 119, 27, 0.2);
}

@media (max-width: 991px) {
    .header-socials {
        display: none; /* Ocultar redes sociales en cabecera en móvil */
    }
    .nav-actions {
        gap: 0;
    }
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 19px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1010;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2.5px;
    background-color: var(--color-primary); /* Color oscuro para visibilidad sobre cabecera clara siempre */
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

.header.scrolled .menu-toggle span {
    background-color: var(--color-primary);
}

@media (max-width: 991px) {
    .nav-wrapper {
        height: 85px;
    }
    .logo-img {
        height: 58px;
    }
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 310px;
        height: 100vh;
        background-color: var(--color-secondary);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 8rem 3rem 3rem 3rem;
        gap: 2rem;
        box-shadow: -15px 0 35px rgba(0, 0, 0, 0.25);
        transition: var(--transition-normal);
        border-left: 1px solid rgba(255, 255, 255, 0.05);
        z-index: 1008; /* Asegurar que cubra la barra y nav-actions cuando está abierto */
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-menu .nav-link,
    .header.scrolled .nav-menu .nav-link {
        color: var(--color-text-light);
        font-size: 1.25rem;
        width: 100%;
        padding: 0.75rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-actions {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
        margin-left: auto;
        margin-right: 1.25rem;
        z-index: 1005; /* Se sitúa bajo el panel del menú lateral */
    }
    
    @media (max-width: 768px) {
        .call-btn span {
            display: none; /* Ocultar el texto "Llamar" en celulares para ahorrar espacio */
        }
        .call-btn {
            padding: 0.55rem;
            width: 36px;
            height: 36px;
            justify-content: center;
        }
        .lang-link {
            padding: 0.25rem 0.5rem;
            font-size: 0.75rem;
        }
        .nav-actions {
            margin-right: 0.75rem;
            gap: 0.4rem;
        }
    }
    
    .menu-toggle.open span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
        background-color: var(--color-text-light);
    }
    .menu-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.open span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
        background-color: var(--color-text-light);
    }
}

/* ==========================================================================
   Hero Section con Patrón de Ingeniería (Blueprint Grid)
   ========================================================================== */

.hero {
    position: relative;
    padding-top: 9.5rem; /* Reducido aún más para evitar espacios vacíos excesivos */
    padding-bottom: 4rem; /* Reducido */
    background: radial-gradient(circle at 80% 20%, rgba(244, 119, 27, 0.08) 0%, transparent 60%), linear-gradient(135deg, var(--color-secondary) 0%, #010813 100%);
    color: var(--color-text-light);
    overflow: hidden;
}

/* Cuadrícula o patrón de arquitectura de fondo */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    pointer-events: none;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 50%;
    height: 70%;
    background: radial-gradient(circle, rgba(198, 127, 92, 0.16) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

@media (max-width: 991px) {
    .hero {
        padding-top: 8rem; /* Reducido en móvil */
        padding-bottom: 3rem; /* Reducido en móvil */
    }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3.5rem;
        text-align: center;
    }
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 900;
    color: #fff;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-title span {
    background: linear-gradient(to right, var(--color-accent), #f3a882);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.75rem;
    }
}

.hero-desc {
    font-size: 1.15rem;
    color: #94a3b8;
    margin-bottom: 3rem;
    max-width: 560px;
    line-height: 1.8;
}

@media (max-width: 991px) {
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
}

.hero-visual {
    position: relative;
}

.hero-img-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transform: perspective(1000px) rotateY(-8deg) rotateX(3deg);
    transition: var(--transition-slow);
}

.hero-img-wrap:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.hero-badge {
    position: absolute;
    bottom: -2rem;
    left: -2rem;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid #fff;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    color: var(--color-primary);
    z-index: 3;
}

.hero-badge-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
    box-shadow: inset 0 2px 4px rgba(198, 127, 92, 0.1);
}

.hero-badge-title {
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: -0.01em;
}

.hero-badge-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

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

/* ==========================================================================
   Antes/Después Slider Component
   ========================================================================== */

.comparison-wrap {
    max-width: 850px;
    margin: 0 auto;
}

.comparison-slider {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border);
}

@media (max-width: 768px) {
    .comparison-slider {
        height: 340px;
    }
}

.comparison-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.comparison-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.img-before {
    z-index: 1;
}

.img-after {
    z-index: 2;
    width: 50%;
}

.slider-label {
    position: absolute;
    bottom: 2rem;
    padding: 0.6rem 1.25rem;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(4px);
    color: #fff;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: var(--radius-sm);
    z-index: 4;
    border: 1px solid rgba(255,255,255,0.1);
}

.label-before {
    left: 2rem;
}

.label-after {
    right: 2rem;
}

.slider-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px; /* Línea divisoria más fina y elegante */
    height: 100%;
    background-color: rgba(255, 255, 255, 0.85);
    cursor: ew-resize;
    z-index: 10;
    box-shadow: 0 0 15px rgba(0,0,0,0.3);
}

.slider-handle-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px; /* Botón un poco más compacto y estilizado */
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #b06948 100%);
    color: #fff;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
    border: 3px solid #fff;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.slider-handle:hover .slider-handle-button {
    background: linear-gradient(135deg, #b06948 0%, var(--color-accent) 100%);
    transform: translate(-50%, -50%) scale(1.12);
    box-shadow: 0 6px 20px rgba(198, 127, 92, 0.45);
}

/* ==========================================================================
   Cotizador Dinámico (Interactive Calculator)
   ========================================================================== */

.calculator-card {
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3.5rem;
    box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
    .calculator-card {
        padding: 2rem 1.5rem;
    }
}

.calc-grid {
    display: grid;
    grid-template-columns: 1.9fr 1.1fr;
    gap: 4rem;
}

@media (max-width: 991px) {
    .calc-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.calc-form-group {
    margin-bottom: 2.25rem;
}

.calc-label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-primary);
    margin-bottom: 0.85rem;
}

.calc-select, .calc-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-light);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    transition: var(--transition-fast);
}

.calc-select:focus, .calc-input:focus {
    border-color: var(--color-accent);
    background-color: #fff;
    box-shadow: 0 0 0 4px rgba(198, 127, 92, 0.12);
}

.calc-range-wrap {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.calc-range {
    flex-grow: 1;
    height: 8px;
    background: #cbd5e1;
    border-radius: var(--radius-full);
    outline: none;
    -webkit-appearance: none;
}

.calc-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    background-color: var(--color-accent);
    border: 4px solid #fff;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.calc-range::-webkit-slider-thumb:hover {
    background-color: var(--color-accent-hover);
    transform: scale(1.2);
}

.calc-range-val {
    min-width: 90px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--color-accent);
    text-align: right;
}

.calc-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
}

.calc-checkbox-card {
    position: relative;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--color-bg-light);
}

.calc-checkbox-card:hover {
    border-color: var(--color-accent);
    background-color: var(--color-accent-light);
    transform: translateY(-2px);
}

.calc-checkbox-card input {
    position: absolute;
    opacity: 0;
}

.calc-checkbox-custom {
    width: 22px;
    height: 22px;
    border: 2px solid #cbd5e1;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    transition: var(--transition-fast);
}

.calc-checkbox-card input:checked + .calc-checkbox-custom {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.calc-checkbox-card input:checked + .calc-checkbox-custom::after {
    content: '✓';
    color: #fff;
    font-size: 0.85rem;
    font-weight: 900;
}

.calc-checkbox-card.selected {
    border-color: var(--color-accent);
    background-color: var(--color-accent-light);
    box-shadow: inset 0 0 0 1px rgba(198, 127, 92, 0.2);
}

.calc-checkbox-card span {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* Resumen del Cotizador */
.calc-summary {
    background: linear-gradient(135deg, #151e2e 0%, #0d121c 100%);
    color: #fff;
    border-radius: var(--radius-md);
    padding: 3rem 2.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-lg);
}

.calc-summary-title {
    color: #fff;
    font-size: 1.35rem;
    margin-bottom: 2rem;
    font-weight: 700;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding-bottom: 1.25rem;
}

.calc-price-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #64748b;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.calc-price {
    font-size: 4rem;
    font-weight: 900;
    color: #fff;
    font-family: var(--font-heading);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.calc-price span {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-accent);
}

.calc-price-sub {
    font-size: 0.85rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

/* ==========================================================================
   Tarjetas de Servicios
   ========================================================================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 3rem;
}

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

.service-card {
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.02);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(198, 127, 92, 0.2);
    border-color: var(--color-accent);
}

.service-img-wrap {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.service-img-wrap::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    background: linear-gradient(to top, rgba(255,255,255,1), transparent);
    z-index: 1;
}

.service-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.service-card:hover .service-img-wrap img {
    transform: scale(1.08);
}

.service-content {
    padding: 2.25rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    z-index: 2;
    position: relative;
    margin-top: -20px;
    background-color: #fff;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.service-title-wrap {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.service-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 1.35rem;
    flex-shrink: 0;
    box-shadow: inset 0 2px 4px rgba(198, 127, 92, 0.05);
    transition: var(--transition-normal);
}

.service-card:hover .service-icon {
    background-color: var(--color-accent);
    color: #fff;
    transform: scale(1.06) rotate(3deg);
}

.service-title {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.service-desc {
    color: var(--color-text-muted);
    font-size: 0.98rem;
    margin-bottom: 1.75rem;
    line-height: 1.7;
}

.service-link {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.service-link i {
    transition: var(--transition-fast);
}

.service-link:hover {
    color: var(--color-accent-hover);
}

.service-link:hover i {
    transform: translateX(4px);
}

/* ==========================================================================
   Portafolio / Galería (Premium Grid)
   ========================================================================== */

.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 4rem;
}

.filter-btn {
    background-color: #fff;
    border: 1px solid var(--color-border);
    color: var(--color-primary-light);
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background: linear-gradient(135deg, var(--color-accent) 0%, #a86240 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 6px 15px rgba(198, 127, 92, 0.35);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2.5rem;
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    height: 380px;
    box-shadow: var(--shadow-md);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.portfolio-item:hover img {
    transform: scale(1.08);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(11, 15, 25, 0.95) 0%, rgba(11, 15, 25, 0.2) 65%);
    opacity: 0;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2.5rem;
    z-index: 2;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-cat {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    font-weight: 800;
    margin-bottom: 0.6rem;
}

.portfolio-title {
    color: #fff;
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.portfolio-loc {
    color: #94a3b8;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==========================================================================
   Sección Nosotros & Info Sedes
   ========================================================================== */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

@media (max-width: 991px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-top: 3rem;
}

@media (max-width: 480px) {
    .about-features {
        grid-template-columns: 1fr;
    }
}

.about-feat-item {
    display: flex;
    gap: 1.25rem;
}

.about-feat-icon {
    width: 42px;
    height: 42px;
    color: var(--color-accent);
    font-size: 1.65rem;
    flex-shrink: 0;
}

.about-feat-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.35rem;
    letter-spacing: -0.01em;
}

.about-feat-desc {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Sedes España/Suiza */
.branches-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    margin-top: 5rem;
}

@media (max-width: 768px) {
    .branches-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.branch-card {
    background-color: #fff;
    border-radius: var(--radius-lg);
    padding: 3.5rem 3rem;
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.branch-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(198, 127, 92, 0.25);
}

.branch-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: linear-gradient(to bottom, var(--color-accent) 0%, #a86240 100%);
}

.branch-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.branch-name {
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.branch-badge {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.45rem 1rem;
    border-radius: var(--radius-full);
}

.branch-badge.headquarters {
    background-color: #eff6ff;
    color: #2563eb;
    border: 1px solid #dbeafe;
}

.branch-badge.branch {
    background-color: #fffbeb;
    color: #d97706;
    border: 1px solid #fef3c7;
}

.branch-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.branch-info-item {
    display: flex;
    gap: 1.25rem;
    font-size: 0.98rem;
}

.branch-icon {
    color: var(--color-accent);
    font-size: 1.15rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.branch-info-content h5 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.15rem;
}

.branch-info-content p {
    color: var(--color-primary);
    font-weight: 600;
}

/* ==========================================================================
   Formulario de Contacto (Elegante)
   ========================================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 0.951fr 1.05fr;
    gap: 5rem;
}

@media (max-width: 991px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
}

.contact-card-box {
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3.5rem;
    box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
    .contact-card-box {
        padding: 2.5rem 1.75rem;
    }
}

.form-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.form-subtitle {
    color: var(--color-text-muted);
    font-size: 0.98rem;
    margin-bottom: 2.5rem;
}

.contact-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 480px) {
    .contact-form-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

.form-group-full {
    grid-column: span 2;
}

@media (max-width: 480px) {
    .form-group-full {
        grid-column: span 1;
    }
}

.form-group label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-light);
    font-size: 0.98rem;
    font-weight: 500;
    color: var(--color-primary);
    transition: var(--transition-fast);
    border-left: 3px solid var(--color-border); /* Borde lateral sutil */
}

.form-control:focus {
    border-color: var(--color-accent);
    border-left-color: var(--color-accent);
    background-color: #fff;
    box-shadow: 0 8px 24px -10px rgba(198, 127, 92, 0.15), 0 0 0 4px rgba(198, 127, 92, 0.08);
}

textarea.form-control {
    resize: vertical;
}

.form-status {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #ecfdf5;
    color: #065f46;
    border: 1px solid #10b981;
}

.form-status.error {
    display: block;
    background-color: #fef2f2;
    color: #981b1b;
    border: 1px solid #ef4444;
}

.map-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border);
    height: 100%;
    min-height: 480px;
}

.map-wrap iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* ==========================================================================
   Testimonios (Mejorado)
   ========================================================================== */

.testimonial-slider-wrap {
    max-width: 850px;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
}

.testimonial-track {
    display: flex;
    transition: transform var(--transition-slow);
}

.testimonial-slide {
    min-width: 100%;
    padding: 1.5rem;
}

.testimonial-card {
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 4rem 3.5rem;
    box-shadow: var(--shadow-lg);
    text-align: center;
    position: relative;
}

@media (max-width: 768px) {
    .testimonial-card {
        padding: 3rem 2rem;
    }
}

.testimonial-quote-icon {
    font-size: 4rem;
    color: rgba(198, 127, 92, 0.15);
    line-height: 1;
    margin-bottom: 1.5rem;
    font-family: var(--font-heading);
    font-weight: 900;
}

.testimonial-text {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-primary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    font-weight: 500;
}

.testimonial-author-avatar {
    width: 80px; /* Tamaño del avatar un poco mayor */
    height: 80px;
    border-radius: var(--radius-full);
    object-fit: cover;
    margin: 0 auto 1.25rem auto;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px var(--color-accent);
    transition: var(--transition-normal);
}

.testimonial-card:hover .testimonial-author-avatar {
    transform: scale(1.05);
}

.testimonial-author-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--color-primary);
}

.testimonial-author-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.testimonial-nav-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    background-color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.testimonial-nav-btn:hover {
    background: linear-gradient(135deg, var(--color-accent) 0%, #a86240 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(198, 127, 92, 0.35);
}

/* ==========================================================================
   Footer (Elegante)
   ========================================================================== */

.footer {
    background-color: #08172c; /* Actualizado al nuevo azul profundo corporativo */
    color: #94a3b8;
    padding-top: 3.5rem; /* Reducido para mayor compacidad */
    padding-bottom: 1.5rem; /* Reducido */
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-top {
    display: grid;
    grid-template-columns: 2.2fr 1fr 1fr 1.8fr;
    gap: 4rem; /* Reducido de 5rem */
    margin-bottom: 2.25rem; /* Reducido de 5rem */
}

@media (max-width: 991px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

@media (max-width: 480px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

.footer-logo {
    height: 95px; /* Logo más grande, nítido y elegante */
    width: auto;
    margin-bottom: 2.25rem;
    opacity: 0.95; /* Mantener nítido */
    transition: var(--transition-normal);
}

.footer-logo:hover {
    opacity: 1;
    transform: translateY(-2px) scale(1.02); /* Suave elevación y escala */
}

.footer-about-text {
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: #94a3b8;
}

.footer-socials {
    display: flex;
    gap: 1.25rem;
}

.footer-social-link {
    width: 42px;
    height: 42px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.footer-social-link:hover {
    background-color: var(--color-accent);
    color: #fff;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(198, 127, 92, 0.25);
}

.footer-title {
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 2rem;
    letter-spacing: -0.01em;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-link {
    font-size: 0.98rem;
    color: #94a3b8;
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent);
    padding-left: 6px;
}

.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-contact-item {
    display: flex;
    gap: 1rem;
    font-size: 0.98rem;
}

.footer-contact-icon {
    color: var(--color-accent);
    font-size: 1.15rem;
    margin-top: 0.25rem;
}

.footer-contact-detail h5 {
    color: #cbd5e1;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.15rem;
}

.footer-contact-detail p {
    font-size: 0.95rem;
    color: #94a3b8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.25rem; /* Reducido de 2.5rem para hacer el rectágulo muy estrecho */
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
    color: #64748b;
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

.footer-legal-links {
    display: flex;
    gap: 2rem;
}

/* ==========================================================================
   Elementos Interactivos Flotantes (WhatsApp & Ir Arriba)
   ========================================================================== */

.whatsapp-float {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    background-color: #25d366;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.35);
    z-index: 999;
    font-size: 2rem;
    transition: var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.1) rotate(8deg);
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.45);
}

.scroll-top {
    position: fixed;
    bottom: 2.5rem;
    left: 2.5rem;
    background-color: var(--color-primary);
    border: 1px solid rgba(255,255,255,0.05);
    color: #fff;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    transition: var(--transition-normal);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: linear-gradient(135deg, var(--color-accent) 0%, #a86240 100%);
    border-color: transparent;
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(198, 127, 92, 0.3);
}

/* ==========================================================================
   Página Legal & Política de Privacidad
   ========================================================================== */

.legal-content {
    max-width: 850px;
    margin: 0 auto;
    background-color: #fff;
    padding: 4rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    .legal-content {
        padding: 2.5rem 1.5rem;
    }
}

.legal-content h2 {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-top: 3rem;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}

.legal-content p {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.02rem;
    line-height: 1.8;
}

.legal-content ul, .legal-content ol {
    margin-bottom: 2rem;
    padding-left: 2.5rem;
    color: var(--color-text-muted);
}

.legal-content li {
    margin-bottom: 0.75rem;
    font-size: 1.02rem;
}

/* Utilidades adicionales */
.bg-alt {
    background-color: var(--color-bg-alt);
}

.text-accent {
    color: var(--color-accent);
}

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

.font-heading {
    font-family: var(--font-heading);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* Acordeón FAQ personalizado y elegante */
details {
    transition: var(--transition-normal);
}

details[open] {
    border-color: var(--color-accent) !important;
    box-shadow: 0 10px 25px -10px rgba(198, 127, 92, 0.15);
}

details summary {
    list-style: none;
    outline: none;
}

details summary::-webkit-details-marker {
    display: none;
}

details summary::after {
    content: '+';
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-accent);
    transition: var(--transition-normal);
    line-height: 1;
}

details[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}