:root {
    /* Daytime Elegance (Light & Bright) */
    --bg-color: #FAFAFA;
    --surface-color: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #4A4A4A;
    --accent-color: #990000;
    --accent-hover: #CC0000;
    --nav-bg: rgba(255, 255, 255, 0.85);

    /* Fonts */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Lato', sans-serif;
}

[data-theme="red-light"] {
    /* Red Light Special */
    --bg-color: #1a0505;
    --surface-color: #2b0a0a;
    --text-primary: #ffd6d6;
    --text-secondary: #ff9999;
    --accent-color: #e60000;
    --accent-hover: #ff3333;
    --nav-bg: rgba(43, 10, 10, 0.85);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: background-color 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
}

/* Floating Sexy Navbar */
.navbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    padding: 10px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

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

/* Theme Toggle Slider */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}
.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--surface-color);
    transition: .4s;
    border-radius: 34px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.slider:before {
    position: absolute;
    content: "🌙";
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    height: 24px;
    width: 24px;
    left: 3px;
    bottom: 2px;
    background-color: #1a1a2e;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #3d0000;
}

input:checked + .slider:before {
    transform: translateX(30px);
    content: "🌹";
    background-color: #5c0000;
}

.theme-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), var(--bg-color)), url('hero_black_lady_lingerie.png') no-repeat center center/cover;
    position: relative;
    overflow: hidden;
    transition: background 0.5s ease;
}

[data-theme="red-light"] .hero {
    background: linear-gradient(to bottom, rgba(26, 5, 5, 0.6), var(--bg-color)), url('hero_black_lady_lingerie.png') no-repeat center center/cover;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
    animation: fadeInDown 1s ease-out;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out;
    line-height: 1.6;
}

.hero-btn {
    padding: 15px 40px;
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 30px;
    font-size: 1.1rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
    animation: fadeIn 1.5s ease-out;
    cursor: pointer;
}

.hero-btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--accent-color);
}

/* Category Sections */
.categories {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.category-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--text-primary);
}

/* Category Tabs */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}
.tab-btn {
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-body);
    font-weight: 600;
    transition: all 0.3s;
}
.tab-btn.active, .tab-btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    padding-bottom: 50px;
}

.product-card {
    background: var(--surface-color);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255,255,255,0.05);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.5);
    border-color: var(--accent-color);
}

.product-img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.product-info {
    padding: 20px;
    text-align: left;
}

.product-category {
    font-size: 0.8rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-title {
    font-size: 1.2rem;
    margin: 10px 0;
    font-weight: 600;
}

.product-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.add-to-cart-btn {
    width: 100%;
    padding: 10px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

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

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.8);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}
.modal.active {
    display: flex;
}
.modal-content {
    background: var(--surface-color);
    border: 1px solid var(--accent-color);
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    padding: 30px;
    position: relative;
    box-shadow: 0 0 30px rgba(0,0,0,0.8);
}
.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
}
.close-btn:hover {
    color: var(--text-primary);
}

.cart-items {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 20px;
}
.cart-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.form-group input {
    width: 100%;
    padding: 10px;
    background: var(--bg-color);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 5px;
    color: var(--text-primary);
}
.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-color);
    color: var(--bg-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1rem;
    transition: opacity 0.3s;
}
.submit-btn:hover {
    opacity: 0.9;
}

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

@media (max-width: 768px) {
    .navbar {
        padding: 10px 15px;
        width: 95%;
        flex-wrap: wrap;
        top: 10px;
    }
    .brand { font-size: 1.2rem; }
    .nav-links {
        display: none;
    }
    .hero h1 { font-size: 2.5rem; }
}

/* Float button for cart on mobile */
.floating-cart {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--accent-color);
    color: var(--bg-color);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    cursor: pointer;
    z-index: 1000;
    transition: transform 0.3s;
}
.floating-cart:hover {
    transform: scale(1.1);
}
.cart-count {
    position: absolute;
    top: 5px;
    right: 5px;
    background: var(--text-primary);
    color: var(--bg-color);
    font-size: 0.8rem;
    font-weight: bold;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}