:root {
        --dark-bg: #1a1a1a;
        --darker-bg: #121212;
        --dark-card: #242424;
        --dark-border: #333;
        --dark-text: #e0e0e0;
        --dark-muted: #9e9e9e;
        --primary-color: #3a7bd5;
        --primary-hover: #2c6bc7;
        --yellow: #ffc107;
        --red: #ff4757;
    }
    
    body {
        background-color: var(--dark-bg);
        color: var(--dark-text);
    }
    
    /* Product Header */
    .product-header {
        background: linear-gradient(135deg, #242424 0%, #1a1a1a 100%);
        border-radius: 8px;
        padding: 30px;
        margin-bottom: 30px;
        border: 1px solid var(--dark-border);
    }
    
    /* Gallery Styles */
    .product-gallery {
        position: relative;
    }
    
    .main-image {
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        margin-bottom: 15px;
        background: var(--dark-card);
        padding: 10px;
        border: 1px solid var(--dark-border);
    }
    
    .thumbnail-container {
        display: flex;
        gap: 10px;
    }
    
    .thumbnail-item {
        width: 70px;
        height: 70px;
        border-radius: 5px;
        overflow: hidden;
        cursor: pointer;
        border: 2px solid var(--dark-border);
        transition: all 0.3s ease;
        background: var(--dark-card);
    }
    
    .thumbnail-item:hover, 
    .thumbnail-item.active {
        border-color: var(--primary-color);
    }
    
    /* Pricing */
    .price-box {
        background: var(--dark-card);
        border-radius: 8px;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        margin-bottom: 20px;
        border: 1px solid var(--dark-border);
    }
    
    .current-price {
        font-size: 32px;
        font-weight: 700;
        color: var(--primary-color);
    }
    
    .original-price {
        font-size: 18px;
        text-decoration: line-through;
        color: var(--dark-muted);
    }
    
    .discount-badge {
        background: var(--red);
        color: white;
        padding: 3px 10px;
        border-radius: 20px;
        font-size: 14px;
        font-weight: 600;
        margin-left: 10px;
    }
    
    /* Buttons */
    .action-buttons .btn {
        padding: 12px 25px;
        font-weight: 600;
        margin-right: 10px;
        margin-bottom: 10px;
    }
    
    /* Tabs */
    .product-tabs {
        margin-top: 40px;
    }
    
    .nav-tabs {
        border-bottom: 1px solid var(--dark-border);
    }
    
    .nav-tabs .nav-link {
        font-weight: 600;
        color: var(--dark-muted);
        padding: 12px 25px;
        background: var(--darker-bg);
        border: 1px solid var(--dark-border);
        border-bottom: none;
    }
    
    .nav-tabs .nav-link.active {
        color: var(--primary-color);
        background: var(--dark-card);
        border-color: var(--dark-border);
        border-bottom-color: var(--dark-card);
    }
    
    .tab-content {
        padding: 30px;
        background: var(--dark-card);
        border-radius: 0 0 8px 8px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        border: 1px solid var(--dark-border);
        border-top: none;
    }
    
    /* Features List */
    .feature-list {
        columns: 2;
        column-gap: 30px;
    }
    
    .feature-list li {
        margin-bottom: 10px;
        position: relative;
        padding-left: 25px;
        color: var(--dark-text);
    }
    
    .feature-list li:before {
        content: "✓";
        color: var(--primary-color);
        font-weight: bold;
        position: absolute;
        left: 0;
    }
    
    /* Demo Items */
    .demo-item {
        border-radius: 8px;
        overflow: hidden;
        margin-bottom: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        transition: all 0.3s ease;
        background: var(--dark-card);
        border: 1px solid var(--dark-border);
    }
    
    .demo-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    }
    
    .demo-info {
        padding: 15px;
        background: var(--dark-card);
        border-top: 1px solid var(--dark-border);
    }
    
    /* Author Card */
    .author-card {
        background: var(--dark-card);
        border-radius: 8px;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        margin-bottom: 30px;
        border: 1px solid var(--dark-border);
    }
    
    .author-avatar {
        width: 80px;
        height: 80px;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid var(--primary-color);
    }
    
    /* Rating Box */
    .rating-box {
        background: var(--dark-card);
        border-radius: 8px;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        margin-bottom: 30px;
        border: 1px solid var(--dark-border);
    }
    
    .rating-stars {
        color: var(--yellow);
        font-size: 24px;
    }
    
    /* Tags */
    .tag {
        display: inline-block;
        background: #2a2a2a;
        padding: 5px 12px;
        border-radius: 20px;
        margin-right: 8px;
        margin-bottom: 8px;
        font-size: 14px;
        color: var(--dark-text);
    }
    
    /* Misc */
    .sale-count {
        font-size: 14px;
        color: var(--dark-muted);
    }
    
    .update-info {
        font-size: 14px;
        color: var(--dark-muted);
    }
    
    hr {
        border-color: var(--dark-border);
    }
    
    /* Form Elements */
    .form-control {
        background-color: var(--darker-bg);
        border-color: var(--dark-border);
        color: var(--dark-text);
    }
    
    .form-control:focus {
        background-color: var(--darker-bg);
        color: var(--dark-text);
        border-color: var(--primary-color);
        box-shadow: 0 0 0 0.25rem rgba(58, 123, 213, 0.25);
    }
    
    /* Alert */
    .alert-info {
        background-color: #1a3a5a;
        border-color: #2a4a6a;
        color: #c0d8f0;
    }
    
    /* Utility Overrides */
    .text-muted {
        color: var(--dark-muted) !important;
    }
    
    .bg-light {
        background-color: var(--dark-card) !important;
    }
    
    .border {
        border-color: var(--dark-border) !important;
    }
    
    .text-dark {
        color: var(--dark-text) !important;
    }
    
    .card {
        background: var(--dark-card);
        border: 1px solid var(--dark-border);
    }
    
    .btn-outline-primary {
        color: var(--primary-color);
        border-color: var(--primary-color);
    }
    
    .btn-outline-primary:hover {
        background: var(--primary-color);
        color: white;
    }
    
    .btn-outline-secondary {
        color: var(--dark-muted);
        border-color: var(--dark-muted);
    }
    
    .btn-outline-secondary:hover {
        background: var(--dark-muted);
        color: var(--dark-text);
    }

        /* Author Profile Styles */
    .author-profile-section {
        margin-bottom: 50px;
    }

    .author-card-extended {
        background: var(--dark-card);
        border-radius: 12px;
        padding: 30px;
        border: 1px solid var(--dark-border);
        box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        height: 100%;
    }

    .author-avatar-wrapper {
        position: relative;
        width: fit-content;
    }

    .author-avatar-lg {
        width: 120px;
        height: 120px;
        border-radius: 50%;
        object-fit: cover;
        border: 4px solid var(--primary-color);
    }

    .verification-badge {
        position: absolute;
        bottom: 10px;
        right: 10px;
        background: var(--primary-color);
        width: 28px;
        height: 28px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        border: 2px solid var(--dark-card);
    }

    .author-name {
        font-size: 28px;
        font-weight: 700;
        color: var(--dark-text);
    }

    .author-title {
        font-size: 16px;
    }

    .author-rating {
        display: flex;
        align-items: center;
    }

    .rating-stars {
        color: var(--yellow);
    }

    .stat-item {
        text-align: center;
        padding: 15px;
        background: rgba(58, 123, 213, 0.1);
        border-radius: 8px;
    }

    .stat-number {
        font-size: 24px;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 5px;
    }

    .stat-label {
        font-size: 14px;
        color: var(--dark-muted);
    }

    .author-bio {
        color: var(--dark-text);
        line-height: 1.6;
        padding: 15px 0;
        border-top: 1px solid var(--dark-border);
        border-bottom: 1px solid var(--dark-border);
    }

    .section-title {
        color: var(--dark-text);
        font-weight: 600;
        position: relative;
        padding-bottom: 10px;
    }

    .section-title::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        width: 40px;
        height: 3px;
        background: var(--primary-color);
        border-radius: 3px;
    }

    .skills-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .skill-tag {
        background: rgba(58, 123, 213, 0.15);
        color: var(--primary-color);
        padding: 6px 12px;
        border-radius: 20px;
        font-size: 14px;
        font-weight: 500;
    }

    /* Author Actions */
    .author-actions-card {
        background: var(--dark-card);
        border-radius: 12px;
        padding: 25px;
        border: 1px solid var(--dark-border);
        box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        height: 100%;
    }

    .action-title {
        color: var(--dark-text);
        font-weight: 600;
        font-size: 18px;
    }

    .btn-action {
        display: block;
        width: 100%;
        padding: 12px;
        text-align: left;
        border-radius: 8px;
        font-weight: 500;
        transition: all 0.3s ease;
        border: none;
    }

    .btn-profile {
        background: rgba(58, 123, 213, 0.1);
        color: var(--primary-color);
    }

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

    .btn-message {
        background: rgba(40, 167, 69, 0.1);
        color: #28a745;
    }

    .btn-message:hover {
        background: #28a745;
        color: white;
    }

    .btn-portfolio {
        background: rgba(108, 117, 125, 0.1);
        color: var(--dark-muted);
    }

    .btn-portfolio:hover {
        background: var(--dark-muted);
        color: white;
    }

    .btn-products {
        background: rgba(255, 193, 7, 0.1);
        color: var(--yellow);
    }

    .btn-products:hover {
        background: var(--yellow);
        color: #1a1a1a;
    }

    .social-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--darker-bg);
        color: var(--dark-muted);
        transition: all 0.3s ease;
    }

    .social-icon:hover {
        background: var(--primary-color);
        color: white;
        transform: translateY(-3px);
    }
    /* Author Profile Additions */
.bg-dark-card {
    background-color: var(--dark-card);
}

.border-dark-border {
    border-color: var(--dark-border);
}

.bg-primary-10 {
    background-color: rgba(58, 123, 213, 0.1);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
}

.bg-darker-bg {
    background-color: var(--darker-bg);
}

.w-40px {
    width: 40px;
}

.h-2px {
    height: 2px;
}