:root {
    /* Default / Unissex Theme - Off-white */
    --bg-color: #f8f5f0;
    --text-color: #1a1a1a;
    --accent-color: #765a2b; /* Darker Gold for a11y */
    --card-bg: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.05);
    --header-bg: rgba(248, 245, 240, 0.9);
    --transition-speed: 0.5s;
}

[data-theme="feminino"] {
    --bg-color: #fdf2f2; /* Rose tone */
    --text-color: #2d1a1a;
    --accent-color: #945e5e; /* Darker Rose for a11y */
    --card-bg: #fffdfd;
    --header-bg: rgba(253, 242, 242, 0.9);
}

[data-theme="masculino"] {
    --bg-color: #f0f4f8; /* Bluish tone */
    --text-color: #1a1e2d;
    --accent-color: #405d7a; /* Darker Slate for a11y */
    --card-bg: #fafdff;
    --header-bg: rgba(240, 244, 248, 0.9);
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .brand-title {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
}

/* ========================================
   MOBILE-FIRST BASE STYLES (< 768px)
   ======================================== */

/* Header & Navigation */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    padding: 1rem;
    box-shadow: 0 2px 20px rgba(0,0,0,0.02);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    transition: background-color var(--transition-speed) ease;
}

.logo-container h1 {
    font-size: 1.6rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-color);
    text-align: center;
}

.filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    background: none;
    border: 1px solid var(--accent-color);
    padding: 0.4rem 1rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--accent-color);
    color: white;
}

/* Catalog Container */
.container {
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}

.brand-section {
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease forwards;
}

.brand-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.brand-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: var(--accent-color);
}

/* Product Grid — mobile: 2 columns */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

/* Product Card */
.product-card {
    background-color: var(--card-bg);
    border: 1px solid rgba(0,0,0,0.05);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--card-shadow);
}

.product-image-wrapper {
    width: 100%;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    background-color: #fdfdfd;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.6s ease;
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-gender {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.15rem 0.4rem;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(5px);
    border-radius: 50px;
}

.product-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.product-name {
    font-size: 0.95rem;
    color: var(--text-color);
    margin: 0.25rem 0;
}

.product-notes {
    font-size: 0.7rem;
    color: #616161; /* Darker gray for a11y */
    font-style: italic;
    min-height: 2rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-footer {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: auto;
}

.product-price-container {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.product-price-original {
    font-size: 0.75rem;
    color: #6b6b6b; /* Darker gray for a11y contrast > 4.5:1 */
    text-decoration: line-through;
    font-weight: 400;
}

.product-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-color);
}

.add-to-cart {
    background-color: var(--text-color);
    color: white;
    border: none;
    padding: 0.6rem 0.8rem;
    cursor: pointer;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    width: 100%;
    text-align: center;
}

.add-to-cart:hover {
    background-color: var(--accent-color);
}

/* Cart Toggle Button */
.cart-toggle {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 55px;
    height: 55px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    z-index: 1001;
    transition: transform 0.3s ease;
}

.cart-toggle:hover {
    transform: scale(1.1);
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--text-color);
    color: white;
    font-size: 0.75rem;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* Cart Modal */
.cart-modal {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 100%;
    height: 100%;
    background-color: white;
    z-index: 2000;
    box-shadow: -10px 0 50px rgba(0,0,0,0.1);
    transition: right 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    display: flex;
    flex-direction: column;
}

.cart-modal.active {
    right: 0;
}

.cart-header {
    padding: 1.5rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-title {
    font-size: 1.5rem;
    margin: 0;
}

.close-cart {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cart-item {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.cart-item-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    background-color: #f9f9f9;
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-size: 0.9rem;
    font-weight: 600;
}

.cart-item-price {
    font-size: 0.85rem;
    color: var(--accent-color);
}

.cart-footer {
    padding: 1.5rem;
    border-top: 1px solid #eee;
    background-color: #f9f9f9;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.checkout-btn {
    width: 100%;
    padding: 1rem;
    background-color: #25d366; /* WhatsApp Green */
    color: white;
    border: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: filter 0.3s ease;
    font-size: 0.85rem;
}

.checkout-btn:hover {
    filter: brightness(0.9);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 2rem 1rem;
    font-size: 0.9rem;
    color: #999;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   TABLET (>= 768px)
   ======================================== */
@media (min-width: 768px) {
    header {
        padding: 1.25rem 2rem;
        gap: 1.25rem;
    }

    .logo-container h1 {
        font-size: 2rem;
    }

    .filters {
        gap: 0.75rem;
    }

    .filter-btn {
        padding: 0.5rem 1.25rem;
        font-size: 0.8rem;
    }

    .container {
        margin: 2rem auto;
        padding: 0 1.5rem;
    }

    .brand-title {
        font-size: 2.5rem;
    }

    .product-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .product-card {
        padding: 1rem;
        gap: 0.75rem;
    }

    .product-name {
        font-size: 1.15rem;
    }

    .product-notes {
        font-size: 0.8rem;
    }

    .product-footer {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .add-to-cart {
        width: auto;
        padding: 0.7rem 1rem;
        font-size: 0.75rem;
    }

    .cart-modal {
        max-width: 400px;
    }

    .cart-item-img {
        width: 60px;
        height: 60px;
    }
}

/* ========================================
   DESKTOP (>= 1024px)
   ======================================== */
@media (min-width: 1024px) {
    header {
        padding: 1.5rem 2rem;
        gap: 1.5rem;
    }

    .logo-container h1 {
        font-size: 2.5rem;
    }

    .filter-btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }

    .container {
        margin: 3rem auto;
        padding: 0 2rem;
    }

    .brand-section {
        margin-bottom: 5rem;
    }

    .brand-title {
        font-size: 3rem;
        margin-bottom: 2rem;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 2.5rem;
    }

    .product-card {
        padding: 1.5rem;
        gap: 1rem;
    }

    .product-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px var(--card-shadow);
    }

    .product-card:hover .product-image {
        transform: scale(1.1);
    }

    .product-gender {
        top: 1rem;
        right: 1rem;
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }

    .product-name {
        font-size: 1.4rem;
        margin: 0.5rem 0;
    }

    .product-notes {
        font-size: 0.85rem;
        min-height: 2.5rem;
        -webkit-line-clamp: 3;
    }

    .product-price-original {
        font-size: 0.9rem;
    }

    .product-price {
        font-size: 1.25rem;
    }

    .add-to-cart {
        padding: 0.8rem 1.2rem;
        font-size: 0.8rem;
    }

    .cart-toggle {
        bottom: 2rem;
        right: 2rem;
        width: 60px;
        height: 60px;
    }

    .cart-header {
        padding: 2rem;
    }

    .cart-title {
        font-size: 1.8rem;
    }

    .cart-items {
        padding: 2rem;
        gap: 1.5rem;
    }

    .cart-footer {
        padding: 2rem;
    }

    .cart-total {
        margin-bottom: 1.5rem;
        font-size: 1.2rem;
    }

    .checkout-btn {
        padding: 1.2rem;
        font-size: 0.9rem;
    }
}