/* ================= RESETEO BÁSICO ================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* COLORES VIBRANTES DE LA MARCA */
    --primary-gradient: linear-gradient(135deg, #004e92 0%, #000428 100%);
    --primary-solid: #004e92;
    --accent-color: #FF8C00; /* Naranja Energético */
    --text-dark: #333;
    --card-bg: #fff;
    --light-blue-bg: #e6f0ff;
}

/* ================= CUERPO ================= */
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    /* Fondo con capa blanca */
    background: linear-gradient(rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.92)), url('img/gas.jpg');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ================= NAVBAR ================= */
.navbar { 
    background: var(--primary-gradient); 
    padding: 0.8rem 0; 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.nav-content { display: flex; justify-content: space-between; align-items: center; }
.logo img { transition: transform 0.3s; }
.logo:hover img { transform: scale(1.05); }

.nav-links { list-style: none; display: flex; align-items: center; }
.nav-links li { margin-left: 20px; }
.nav-links a { color: white; text-decoration: none; font-weight: 500; font-size: 1.05rem; transition: color 0.3s; }
.nav-links a:hover { color: var(--accent-color); }

/* BOTONES */
.btn {
    display: inline-block; padding: 12px 25px; border-radius: 50px;
    text-decoration: none; font-weight: bold; color: white; border: none; cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.btn-whatsapp { background-color: #25D366; }
.btn-whatsapp:hover { background-color: #128c7e; transform: translateY(-2px); }

.btn-whatsapp-nav { 
    background-color: #25D366; padding: 8px 18px; border-radius: 20px; 
    font-size: 0.9rem; color: white !important; font-weight: bold; 
}
.btn-whatsapp-nav:hover { background-color: #128c7e; color: white !important; }

.btn-email, .btn-submit { background: var(--accent-color); color: white; }
.btn-email:hover, .btn-submit:hover { background: #e67e00; transform: translateY(-2px); }

/* ================= HERO ================= */
.hero { 
    background: linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75)), url('img/gas.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 120px 0; 
    text-align: center;
    color: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.hero h2 { 
    font-size: 3rem; 
    margin-bottom: 20px; 
    text-shadow: 2px 2px 10px rgba(0,0,0,0.8);
    font-weight: 900;
}
.hero p { font-size: 1.3rem; margin-bottom: 30px; opacity: 0.; }
.hero-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

/* ================= DISEÑO DEL CATÁLOGO ================= */
.section { padding: 60px 0; }
.section-title { 
    text-align: center; font-size: 2.2rem; margin-bottom: 50px; 
    color: var(--primary-solid); position: relative; padding-bottom: 15px; font-weight: 800;
}
.section-title::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 80px; height: 5px; background: var(--accent-color); border-radius: 2px;
}

/* Layout Principal */
.main-layout {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

/* --- BARRA LATERAL (SIDEBAR) --- */
.main-sidebar {
    width: 260px;
    background: white;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #eee;
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    position: sticky;
    top: 90px;
    flex-shrink: 0;
}

.sidebar-header-mobile { display: none; }

.sidebar-menu { list-style: none; padding: 0; }

.sidebar-menu > li {
    padding: 10px;
    cursor: pointer;
    color: #555;
    border-radius: 5px;
    transition: 0.2s;
    font-size: 0.95rem;
    border-bottom: 1px solid #f9f9f9;
}

.sidebar-menu > li:hover, .sidebar-menu > li.active {
    background: var(--light-blue-bg);
    color: var(--primary-solid);
    font-weight: bold;
}

/* SUB-MENÚ (ACORDEÓN) */
.brand-submenu {
    list-style: none;
    padding-left: 15px;
    display: none; /* Oculto por defecto */
    margin-top: 5px;
    border-left: 2px solid var(--accent-color);
}

.brand-submenu.show {
    display: block;
    animation: slideDown 0.3s ease-out;
}

.brand-submenu li {
    font-size: 0.85rem;
    padding: 6px 10px;
    color: #666;
    font-weight: normal;
}

.brand-submenu li:hover {
    color: var(--primary-solid);
    font-weight: bold;
    background: transparent;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- GRID DE PRODUCTOS --- */
.content-right { flex-grow: 1; width: 100%; }

.catalog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

/* TARJETA DE PRODUCTO */
.product-card {
    background: white;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    transition: transform 0.3s;
    display: none; /* Oculto para paginación */
}
.product-card.visible { display: block; animation: fadeIn 0.5s; }

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}

/* IMAGEN CONTROLADA (NO GIGANTE) */
.product-card img {
    width: 100%;
    height: 160px;         /* ALTURA FIJA */
    object-fit: contain;   /* AJUSTE PERFECTO */
    margin-bottom: 10px;
}

.brand-badge {
    background: #f0f2f5;
    color: #555;
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    font-weight: bold;
    display: inline-block;
    white-space: nowrap; 
    margin-bottom: 8px;
}

.btn-cotizar {
    display: block;
    background: #25D366;
    color: white;
    padding: 8px;
    border-radius: 5px;
    text-decoration: none;
    margin-top: 10px;
    font-weight: bold;
    cursor: pointer;
}
.btn-cotizar:hover { background: #1ebc57; }

/* Botón Ver Más */
.load-more-container { text-align: center; margin-top: 30px; }
#btn-load-more {
    background: var(--primary-solid);
    color: white;
    border: none;
    padding: 10px 30px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1rem;
}

/* ================= MARCAS (LOGOS) ================= */
.brands-section { background: #f8f9fa; padding: 40px 0; }
.brands-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    align-items: center;
}

.brands-grid img {
    height: 80px; /* Tamaño controlado */
    width: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: 0.3s;
}
.brands-grid img:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.1);
}

/* ================= MODAL DE EMAIL ================= */
.modal {
    display: none; position: fixed; z-index: 2000; left: 0; top: 0;
    width: 100%; height: 100%; background-color: rgba(0,0,0,0.85); overflow-y: auto;
}
.modal-content {
    background-color: #fff; margin: 10% auto; padding: 40px; border-radius: 15px;
    width: 90%; max-width: 500px; position: relative; box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}
.close-modal { float: right; font-size: 30px; cursor: pointer; }
.form-group { margin-bottom: 20px; }
.form-group input { width: 100%; padding: 12px; border: 2px solid #eee; border-radius: 8px; }

/* ================= FOOTER ================= */
footer#contacto {
    background: var(--primary-gradient); color: white; padding: 60px 0 30px; text-align: center;
}
footer h3 { color: var(--accent-color); font-size: 1.8rem; margin-bottom: 20px; }

/* ================= RESPONSIVE ================= */
.menu-toggle { display: none; }
.mobile-filter-btn { display: none; }

@media (max-width: 900px) {
    .menu-toggle { display: flex; flex-direction: column; justify-content: space-between; width: 30px; height: 21px; background: transparent; border: none; cursor: pointer; }
    .menu-toggle .bar { height: 3px; width: 100%; background: white; border-radius: 3px; }
    
    .nav-links { position: fixed; top: 0; right: -100%; height: 100vh; width: 80%; background: var(--primary-solid); flex-direction: column; justify-content: center; transition: 0.4s; box-shadow: -5px 0 15px rgba(0,0,0,0.2); }
    .nav-links.active { right: 0; }

    /* Sidebar Móvil */
    .main-sidebar {
        position: fixed;
        top: 0; left: -100%;
        width: 80%;
        height: 100vh;
        z-index: 1000;
        overflow-y: auto;
        transition: 0.3s;
        box-shadow: 2px 0 10px rgba(0,0,0,0.2);
    }
    .main-sidebar.active { left: 0; }
    
    .sidebar-header-mobile {
        display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px;
    }
    .close-sidebar { font-size: 2rem; cursor: pointer; }

    .mobile-filter-btn {
        display: block; background: var(--primary-solid); color: white;
        border: none; padding: 8px 15px; border-radius: 5px; font-weight: bold;
    }
    .brands-grid img { height: 50px; gap: 20px; }
}
/* --- NUEVOS BOTONES DE ACCIÓN (DOBLES) --- */
.action-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    justify-content: center;
}

.btn-icon {
    flex: 1; /* Que ocupen mitad y mitad */
    padding: 8px 5px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: bold;
    cursor: pointer;
    color: white !important;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: 0.3s;
}

.btn-icon.whatsapp {
    background-color: #25D366;
}
.btn-icon.whatsapp:hover { background-color: #1ebc57; }

.btn-icon.email {
    background-color: var(--accent-color); /* Naranja */
}
.btn-icon.email:hover { background-color: #e67e00; }