:root {
    /* --- PALETA CORPORATIVA --- */
    --color-primary: #D32F2F;
    --color-primary-dark: #B71C1C;
    --color-primary-glow: rgba(211, 47, 47, 0.15);
    
    --color-bg-deep: #050505;      
    --color-bg-surface: #0a0a0a;   
    --color-border: #222;       
    
    --color-text-main: #f0f0f0;
    --color-text-muted: #a0a0a0;
    
    --container-width: 1100px;
    --nav-height: 80px;            
    --radius-std: 6px;
}

/* --- CORE --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--color-bg-deep);
    color: var(--color-text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- NAVBAR --- */
.navbar {
    height: var(--nav-height);
    background-color: rgba(5, 5, 5, 0.98);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar__container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img { height: 38px; width: auto; }

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: 30px;
    list-style: none;
    align-items: center;
}

.nav-menu__link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-menu__link:hover { color: white; }

/* --- SECCIONES --- */
.section { 
    padding: 100px 20px;
    background-color: var(--color-bg-deep);
    border-bottom: 1px solid #111;
}

/* Contenedor centralizado para el contenido de las secciones */
.section__content {
    max-width: var(--container-width);
    margin: 0 auto;
}

.section--hero {
    padding-top: 160px;
    padding-bottom: 120px;
    text-align: center;
    background: radial-gradient(circle at top center, rgba(211, 47, 47, 0.05) 0%, transparent 50%);
    border-bottom: none;
}

.section__header { margin-bottom: 4rem; text-align: center; }

.section__title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
}

.section__title--hero {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.section__subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

.highlight {
    color: var(--color-primary);
    text-shadow: 0 0 40px var(--color-primary-glow);
}

/* --- BOTONES --- */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

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

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

/* --- TARJETAS DE SERVICIOS --- */
.grid-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card-service {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    padding: 2.5rem;
    border-radius: var(--radius-std);
    transition: border-color 0.3s;
}

.card-service:hover { border-color: var(--color-primary); }

.service-icon-svg {
    width: 40px;
    height: 40px;
    margin-bottom: 1.5rem;
    fill: var(--color-primary);
}

.card-service__title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: white;
}

.card-service__text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* --- CASO DE ESTUDIO (Horizontal) --- */
.card-horizontal {
    display: grid;
    grid-template-columns: 45% 55%;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-std);
    overflow: hidden;
}

.card-horizontal__visual {
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--color-border);
    padding: 2rem;
}

.card-horizontal__img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid #333;
}

.card-horizontal__content {
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* --- FORMULARIO --- */
.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background: transparent; 
}

.form-group { margin-bottom: 1.5rem; }

.form-label {
    display: block;
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 14px;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: white;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

.form-input:focus { border-color: var(--color-primary); }
textarea.form-input { resize: none; }

/* Botón FULL WIDTH */
.btn--full {
    width: 100%;
    padding: 16px;
    font-size: 1rem;
    margin-top: 10px;
}

.form-status { margin-top: 1rem; text-align: center; display: none; }

/* --- FOOTER --- */
.footer {
    background-color: #020202;
    border-top: 1px solid var(--color-border);
    padding: 3rem 0;
    font-size: 0.9rem;
}

.footer__container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-col-left { text-align: left; }
.footer-col-center { display: flex; gap: 20px; }
.footer-col-right { text-align: right; color: #444; }

.social-icon {
    width: 22px;
    height: 22px;
    fill: var(--color-text-muted);
    transition: fill 0.3s;
}
.social-icon:hover { fill: white; }

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .section__title--hero { font-size: 3rem; }
    .card-horizontal { grid-template-columns: 1fr; }
    .card-horizontal__visual { border-right: none; border-bottom: 1px solid var(--color-border); }
    .footer__container { flex-direction: column; gap: 2rem; text-align: center; }
    .footer-col-left, .footer-col-right { text-align: center; }
}

/* --- 📱 RESPONSIVE FINAL (MOBILE FIXES) 📱 --- */
@media (max-width: 768px) {
    
    /* 1. Ajuste de Tipografía Gigante */
    :root {
        --nav-height: 70px;
    }

    .section__title--hero {
        font-size: 2.5rem;
    }

    .section__title {
        font-size: 2rem;
    }
    
    .section__subtitle {
        font-size: 1rem;
        padding: 0 10px;
    }

    /* 2. Menú de Navegación Limpio */
    .nav-menu__link {
        display: none; 
    }
    
    .nav-menu {
        gap: 0; 
    }
    
    .logo-text {
        font-size: 1.1rem; 
    }
    
    .logo-img {
        height: 32px;
    }

    /* 3. Espaciado (Padding) */
    .section {
        padding: 60px 20px; 
    }

    .section--hero {
        padding-top: 120px;
        padding-bottom: 80px;
    }
    
    /* 4. Ajustes Específicos de Tarjetas */
    .card-horizontal {
        grid-template-columns: 1fr;
    }
    
    .card-horizontal__visual {
        padding: 1rem;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
    
    .card-horizontal__content {
        padding: 2rem 1.5rem;
    }
    
    /* Footer en columna */
    .footer__container {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-col-left, .footer-col-right {
        text-align: center;
    }
    
    .footer-col-center {
        justify-content: center;
    }
}