:root {
    /* Paleta oscura industrial, premium y dinámica */
    --primary-color: #d12027; /* Asumiendo un color de acento rojo como común en el sector industrial, se ajustará con el logo real */
    --primary-hover: #a1141b;
    --dark-bg: #090e14;
    --darker-bg: #04070a;
    --card-bg: #121822;
    --border-color: #202b38;
    --text-main: #f3f6f9;
    --text-muted: #8d9eb0;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--dark-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* NAVBAR */
.navbar {
    background-color: rgba(4, 7, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: inline-flex;
    align-items: center;
    background-color: #ffffff;
    padding: 6px 16px;
    border-radius: 6px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.logo img {
    height: 42px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    color: var(--text-muted);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

/* DRopdown */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-bg);
    min-width: 200px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.5);
    z-index: 1;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    top: 30px;
    overflow: hidden;
}

.dropdown-content a {
    color: var(--text-muted);
    padding: 12px 16px;
    display: block;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}
.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background-color: var(--border-color);
    color: var(--primary-color);
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* BOTONES */
.btn-primary {
    background-color: var(--primary-color);
    color: white !important;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: transparent;
    box-shadow: 0 0 15px rgba(209, 32, 39, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main) !important;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.btn-large {
    padding: 14px 32px;
    font-size: 1.05rem;
}

/* HERO SECTION */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('../assets/images/hero-industrial.png'); /* Se generará vía IA */
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, var(--darker-bg) 0%, rgba(4,7,10,0.8) 50%, rgba(4,7,10,0.4) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    margin: 0;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
    color: var(--text-muted);
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(to right, #fff, #9aa5b1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subline {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

/* MARCAS */
.marcas {
    padding: 60px 0;
    background-color: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.section-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 30px;
    font-weight: 600;
}

.marcas-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.marca-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    width: 320px;
    max-width: 100%;
    transition: var(--transition);
}

.marca-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.marca-card img {
    max-width: 100%;
    height: 60px;
    object-fit: contain;
    margin-bottom: 20px;
    transition: var(--transition);
}

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

.marca-card p {
    color: #4a5568;
    font-size: 0.95rem;
    font-weight: 500;
}

/* CATEGORIAS */
.categorias {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

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

.categorias-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.cat-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    height: 380px;
    display: flex;
    align-items: flex-end;
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.cat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    transition: var(--transition);
    z-index: 0;
    opacity: 0.6;
}

/* Estas imágenes se agregarán después / se sobrescribirán con IA */
.cat-card.hidraulica::before { background-image: url('../assets/images/cat-hidraulica.png'); }
.cat-card.neumatica::before { background-image: url('../assets/images/cat-neumatica.png'); }
.cat-card.industrial::before { background-image: url('../assets/images/cat-industrial.png'); }

.cat-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to top, var(--darker-bg) 0%, rgba(4,7,10,0.1) 100%);
    z-index: 1;
}

.cat-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.cat-card:hover::before {
    transform: scale(1.05);
    opacity: 0.8;
}

.cat-content {
    position: relative;
    z-index: 2;
}

.cat-content h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.cat-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.btn-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* FOOTER */
footer {
    background-color: var(--darker-bg);
    padding: 60px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand img {
    background-color: #ffffff;
    padding: 10px;
    border-radius: 6px;
    display: block;
}

.footer-links h4, .footer-contact h4 {
    font-family: var(--font-heading);
    margin-bottom: 20px;
    color: var(--text-main);
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* MOBILE RESPONSIVE */
@media (max-width: 900px) {
    .hero-headline { font-size: 2.8rem; }
    .categorias-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; } /* Mobile menu needed logic */
    .menu-toggle { display: block; }
    .footer-container { grid-template-columns: 1fr; gap: 30px; }
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
}

/* WHATSAPP FLOAT */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}