:root {
    /* Colors - Dark Theme */
    --primary-bg: #0f172a;
    /* Dark Blue/Slate Background */
    --secondary-bg: #1e293b;
    /* Slightly Lighter Panel Background */
    --accent-color: #3b82f6;
    /* Bright Blue Accent */
    --accent-hover: #2563eb;
    --text-primary: #f8fafc;
    /* White/Off-white Text */
    --text-secondary: #94a3b8;
    /* Gray Text */
    --border-color: #334155;
    --gold: #fbbf24;
    /* For Ratings/Highlight */
    --danger: #ef4444;
    /* For Discounts */
    --success: #22c55e;

    /* Spacing */
    --container-width: 1200px;
    --header-height: 70px;
    --bottom-nav-height: 60px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: var(--bottom-nav-height);
    /* Space for fixed bottom nav */
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* === Utility Navigation === */
.utility-nav {
    background-color: #020617;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    padding: 8px 0;
}

.utility-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: flex-end;
    gap: 20px;
    flex-wrap: wrap;
}

.utility-link {
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 500;
}

.utility-link:hover,
.utility-link.active {
    color: var(--accent-color);
}

/* === Banner Header === */
.banner-header {
    background-color: var(--secondary-bg);
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.banner-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -1px;
}

/* Running Text */
.running-text-container {
    flex: 1;
    background-color: rgba(0, 0, 0, 0.2);
    height: 40px;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
}

.running-text {
    display: flex;
    position: absolute;
    white-space: nowrap;
    animation: marquee 20s linear infinite;
}

.running-text span {
    padding-right: 50px;
    color: var(--text-secondary);
    font-size: 14px;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* Cart Button */
.cart-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    position: relative;
    cursor: pointer;
    padding: 8px;
}

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

.cart-count {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: bold;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* === Main Navigation === */
.main-nav {
    background-color: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
}

.main-nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    height: 50px;
}

.category-dropdown {
    position: relative;
    margin-right: 30px;
}

.category-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 15px;
}

.category-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--secondary-bg);
    min-width: 220px;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    padding: 10px 0;
    display: none;
    z-index: 90;
    border: 1px solid var(--border-color);
}

.category-menu.active {
    display: block;
}

.category-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.category-menu a:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
}

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

/* === Main Content === */
.main-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 20px;
}

/* Hero Section */
.hero-section {
    margin-bottom: 30px;
}

.hero-image-container {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

.cta-btn {
    flex: 1;
    padding: 15px;
    text-align: center;
    border-radius: 8px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 16px;
    transition: transform 0.2s;
}

.cta-btn:active {
    transform: scale(0.98);
}

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

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

.cta-secondary {
    background-color: var(--secondary-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.cta-secondary:hover {
    background-color: #334155;
}

/* Product Details */
.product-details {
    background-color: var(--secondary-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.rating-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.stars {
    color: var(--gold);
}

.rating-count {
    color: var(--text-secondary);
    font-size: 14px;
}

.brand a {
    color: var(--accent-color);
    font-weight: 600;
}

.price-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.price-main {
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-current {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Outfit', sans-serif;
}

.price-original {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.discount-badge {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 14px;
}

.quantity-controls {
    display: flex;
    align-items: center;
    background-color: var(--primary-bg);
    border-radius: 8px;
    padding: 5px;
    border: 1px solid var(--border-color);
}

.qty-btn {
    width: 32px;
    height: 32px;
    background: var(--secondary-bg);
    border: none;
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    background-color: #334155;
}

.qty-input {
    width: 50px;
    background: none;
    border: none;
    color: var(--text-primary);
    text-align: center;
    font-weight: 600;
    font-size: 16px;
    -moz-appearance: textfield;
    appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

/* Content SEO */
.content-section {
    padding: 20px 0;
}

.article-content {
    color: var(--text-secondary);
}

.article-content h1 {
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 36px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.article-content h2 {
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    margin: 30px 0 15px;
}

.article-content p {
    margin-bottom: 15px;
}

/* === Bottom Navigation (Fixed) === */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--bottom-nav-height);
    background-color: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    font-size: 11px;
    padding: 8px;
}

.bottom-nav-item:hover {
    color: var(--accent-color);
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .utility-nav {
        display: none;
    }

    .banner-container {
        padding: 0 15px;
    }

    .logo {
        font-size: 24px;
    }

    .running-text-container {
        display: none;
        /* Hide running text on small mobile to save space or adjust */
    }

    .main-nav-container {
        overflow-x: auto;
        white-space: nowrap;
        scrollbar-width: none;
        /* Hide scrollbar */
    }

    .category-dropdown {
        margin-right: 15px;
    }

    .product-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .price-section {
        flex-direction: column;
        align-items: stretch;
    }

    .price-main {
        justify-content: space-between;
    }

    .quantity-section {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .article-content h1 {
        font-size: 28px;
    }
}