:root {
    --primary: #5fb3b3;
    --primary-dark: #4a8e8e;
    --bg-dark: #0a0a0a;
    --bg-card: #141414;
    --text-main: #e0e0e0;
    --text-dim: #a0a0a0;
    --accent-gold: #c5a059;
    --glass-bg: rgba(15, 15, 15, 0.85);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, .logo, .nav-toggle {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

/* Header & Nav */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-subtle);
    transition: var(--transition);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 60px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo img {
    height: 24px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.logo:hover img {
    opacity: 0.8;
    transform: scale(1.02);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 40px;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: var(--transition);
    position: relative;
    padding: 8px 0;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--text-main);
}

.main-nav a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
    border-radius: 2px;
}

.main-nav a:hover::after, .main-nav a.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.nav-toggle span {
    width: 28px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: var(--transition);
}

/* Main Content */
.site-content {
    padding-top: 80px;
    flex: 1;
}

main {
    padding: 60px 40px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.section-divider {
    width: 100%;
    height: 1px;
    margin: 25px 0;
    background: linear-gradient(
        to right,
        transparent,
        var(--border-subtle),
        transparent
    );
}

/* Footer */
footer {
    padding: 60px 20px;
    background: #050505;
    border-top: 1px solid var(--border-subtle);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    height: 20px;
    width: auto;
    opacity: 0.6;
    transition: var(--transition);
}

.footer-logo:hover {
    opacity: 1;
}

footer p {
    color: var(--text-dim);
    font-size: 13px;
    letter-spacing: 1px;
}

/* Utility Classes */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.sold-out-ribbon {
    position: absolute;
    top: 25px;
    left: -10px;
    background: #8b2626; /* Deep elegant red */
    color: #fff;
    padding: 6px 18px 6px 25px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    z-index: 15;
    box-shadow: 5px 5px 15px rgba(0,0,0,0.4);
    letter-spacing: 1px;
    border-radius: 0 4px 4px 0;
    pointer-events: none;
}

/* The fold behind the card to create the 'wrapped' effect */
.sold-out-ribbon::before {
    content: "";
    position: absolute;
    top: -10px;
    left: 0;
    border-bottom: 10px solid #5a1a1a; /* Darker shade for depth shadow */
    border-left: 10px solid transparent;
}

.product-bestseller-badge {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: var(--accent-gold);
    color: #000;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 10;
    box-shadow: 0 4px 10px rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    gap: 4px;
    pointer-events: none;
    width: fit-content;
    height: fit-content;
    line-height: 1;
}

/* Media Queries */
@media (max-width: 1024px) {
    .header-inner {
        padding: 12px 40px;
    }
}

@media (max-width: 940px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-dark);
        border-bottom: 1px solid var(--border-subtle);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
    }

    .main-nav.open {
        max-height: 400px;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
    }

    .main-nav li {
        width: 100%;
    }

    .main-nav a {
        display: block;
        padding: 15px 40px;
        font-size: 16px;
    }

    .main-nav a::after {
        display: none;
    }
    
    .main-nav a.active {
        background: rgba(255, 255, 255, 0.05);
        color: var(--primary);
    }
}

@media (max-width: 768px) {
    main {
        padding: 40px 20px;
    }
    
    .header-inner {
        padding: 10px 20px;
    }
}

@media (max-width: 500px) {
    .logo img {
        height: 18px;
    }
}