:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --card-bg: #f9f9f9;
    --card-hover: #f0f0f0;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --border-color: #e0e0e0;
    --header-bg: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    --modal-bg: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --card-hover: #2d2d2d;
    --accent-color: #4da3ff;
    --accent-hover: #2b80ff;
    --border-color: #333333;
    --header-bg: #1e1e1e;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    --modal-bg: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Header */
.header {
    background-color: var(--header-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.5rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.logo img {
    height: 25px;
    vertical-align: middle;
    margin-right: 8px;
}

.disclaimer-text {
    font-size: 0.75rem;
    color: #ff4d4f;
    line-height: 1.2;
    font-weight: 500;
    max-width: 400px;
}

.controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.control-item {
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.4rem;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        align-items: center;
    }
    
    .logo-area {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
        flex: 1;
        min-width: 0; /* Allow flex item to shrink */
    }

    .disclaimer-text {
        font-size: 0.65rem;
        max-width: 100%;
    }

    .logo {
        font-size: 1rem;
    }

    .controls {
        margin-left: auto;
    }
}

.control-item:hover, .control-item.active {
    background-color: var(--card-hover);
}

#cart-btn {
    position: relative;
    border: none;
    font-size: 1.2rem;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--accent-color);
    color: white;
    font-size: 0.7rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Category Filter */
.category-filter {
    display: flex;
    gap: 10px;
    margin: 20px 0;
    overflow-x: auto;
    padding-bottom: 5px; /* Scrollbar space */
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.category-filter::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.category-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.category-btn:hover {
    background-color: var(--card-hover);
}

.category-btn.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Product Grid */
.product-grid {
    display: grid;
    gap: 15px;
    padding: 20px 0;
    /* Mobile: 2 items per row */
    grid-template-columns: repeat(2, 1fr);
}

/* Tablet: 3 items per row */
@media (min-width: 768px) {
    .product-grid {
        gap: 20px;
        padding: 40px 0;
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Laptop/Desktop: 4 items per row */
@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Product Card */
.product-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

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

.product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: #ccc;
}

.product-info {
    padding: 15px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-title {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.product-price {
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.add-to-cart-btn {
    margin-top: auto;
    width: 100%;
    padding: 10px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
    font-size: 1rem;
}

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

/* Product Detail Page */
.back-link {
    margin: 20px 0;
}

.back-link a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--text-color);
    font-weight: 500;
}

.back-link a:hover {
    color: var(--accent-color);
}

.product-detail {
    display: grid;
    gap: 40px;
    grid-template-columns: 1fr;
    padding-bottom: 80px; /* Space for sticky button on mobile */
}

@media (min-width: 768px) {
    .product-detail {
        grid-template-columns: 1fr 1fr;
        padding-bottom: 40px;
    }
}

.detail-image {
    width: 100%;
    border-radius: 8px;
    background-color: #ccc;
    aspect-ratio: 1/1;
    object-fit: contain; /* Changed to contain to show full product */
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
}

.detail-info {
    display: flex;
    flex-direction: column;
}

.detail-title {
    font-size: 1.8rem; /* Slightly smaller for mobile start */
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.detail-price {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    font-weight: bold;
}

.detail-desc {
    margin-bottom: 2rem;
    line-height: 1.8;
    color: var(--text-color);
    opacity: 0.9;
}

.variant-selector {
    margin: 1rem 0;
}

.variant-selector label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.variant-selector select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

/* Cart Page */
.cart-page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.page-title {
    margin: 20px 0;
    text-align: center;
}

.empty-cart-message {
    text-align: center;
    padding: 40px;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.empty-cart-message p {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.cart-page-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.cart-item-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    background-color: #ccc;
}

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

.cart-item-info h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.cart-item-meta {
    color: var(--text-color);
    opacity: 0.8;
}

.cart-item-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.item-total-price {
    font-weight: bold;
    font-size: 1.1rem;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--card-bg);
    padding: 5px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.qty-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    color: var(--accent-color);
}

.qty-val {
    min-width: 20px;
    text-align: center;
}

.remove-btn {
    background: none;
    border: none;
    color: #ff4d4f;
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: underline;
}

.cart-summary {
    margin-top: 30px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: right;
}

.summary-row {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 20px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    opacity: 0.8;
}

/* Contact Widget */
.contact-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    pointer-events: none;
}

.contact-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
    pointer-events: auto;
}

.contact-btn:hover {
    transform: scale(1.1);
}

.contact-menu {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    min-width: 240px;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: all 0.3s ease;
}

.contact-menu.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.contact-menu h3 {
    margin: 0 0 10px 0;
    font-size: 1rem;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.contact-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-menu li {
    margin-bottom: 8px;
}

.contact-menu li:last-child {
    margin-bottom: 0;
}

.contact-menu a {
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: 6px;
    transition: background 0.2s;
}

.contact-menu a:hover {
    background: var(--bg-color);
    color: var(--accent-color);
}

.nav-link {
    font-weight: 500;
}