* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f8f9fa;
    color: #333;
    padding-bottom: 30px;
}

/* Header */
.header {
    background-color: #2b2d42;
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.cart-icon {
    font-size: 1.2rem;
    cursor: pointer;
    background: #d90429;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: bold;
}

/* Categorías */
.categories {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: #edf2f4;
    overflow-x: auto;
}

.category-btn {
    border: none;
    background: white;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
}

.category-btn.active, .category-btn:hover {
    background: #d90429;
    color: white;
}

/* Grid de Productos */
.container {
    max-width: 1100px;
    margin: 20px auto;
    padding: 0 15px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.product-card {
    background: white;
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
}

.product-image {
    width: 100%;
    height: 150px;
    background: #e9ecef;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin-bottom: 12px;
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.product-price {
    font-size: 1.2rem;
    color: #d90429;
    font-weight: bold;
    margin-bottom: 12px;
}

.btn-add {
    background: #2b2d42;
    color: white;
    border: none;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.2s;
}

.btn-add:hover {
    background: #8d99ae;
}

/* Modal Carrito */
.cart-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.cart-content {
    background: white;
    padding: 25px;
    border-radius: 12px;
    width: 90%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close-btn {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 1.5rem;
    cursor: pointer;
}

.cart-items {
    margin: 20px 0;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

.checkout-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.checkout-form input {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.btn-whatsapp {
    background: #25d366;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    font-size: 1rem;
}