:root {
    --primary: #1e293b;
    --accent: #dc2626;
    --whatsapp-green: #25d366;
    --bg-light: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    margin: 0;
}

/* Header & Logos */
.main-header {
    background: #000000;
    padding: 15px 0;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.main-header img {
    max-width: 250px;
    height: auto;
}

/* Card & Layout Improvements */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    padding: 30px 0;
}

.product-card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 16px 20px;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
}

.product-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 4px 0;
    text-transform: uppercase;
}

.model-text {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

/* Contenedor de Imagen Optimizado */
.image-container {
    height: 220px;
    padding: 15px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.image-container img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.product-card:hover .image-container img {
    transform: scale(1.04);
}

/* Especificaciones Técnicas */
.specs {
    padding: 16px 20px;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-grow: 1;
    background: #fafafa;
}

.specs-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-main);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

/* Tags de Accesorios */
.accessories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.acc-tag {
    background: #e2e8f0;
    color: var(--text-main);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Footer de Tarjeta y Botón */
.card-footer {
    padding: 16px 20px;
    background: #ffffff;
    border-top: 1px solid var(--border-color);
}

.btn-whatsapp-modern {
    background-color: var(--whatsapp-green);
    color: #ffffff;
    text-decoration: none;
    width: 100%;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s ease;
    box-sizing: border-box;
}

.btn-whatsapp-modern:hover {
    background-color: #1eb954;
}