/* ==========================================================================
   WooCommerce Product Comparator Pro - Dark Modern Theme
   ========================================================================== */

:root {
    --bg-dark: #0a0a0f;
    --bg-card: #13131a;
    --bg-hover: #1a1a24;
    --border-color: #2a2a35;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* ==========================================================================
   Selector Interface
   ========================================================================== */

.woo-compare-selector-wrapper {
    background: var(--bg-dark);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.selector-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    margin-bottom: 30px;
    align-items: start;
}

.selector-column {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.selector-column:hover {
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.1);
}

.selector-title {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 25px 0;
    text-align: center;
    letter-spacing: -0.5px;
}

.selector-group {
    margin-bottom: 20px;
}

.selector-group:last-child {
    margin-bottom: 0;
}

.selector-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.brand-selector,
.challenge-selector {
    width: 100%;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 16px;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23a0a0b0'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 40px;
}

.brand-selector:hover,
.challenge-selector:hover {
    border-color: rgba(102, 126, 234, 0.5);
}

.brand-selector:focus,
.challenge-selector:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.brand-selector:disabled,
.challenge-selector:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--bg-card);
}

.selector-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
}

.vs-badge {
    background: var(--accent-gradient);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 20px;
    letter-spacing: 1px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 10px 40px rgba(102, 126, 234, 0.5);
    }
}

.selector-actions {
    text-align: center;
}

.compare-button {
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 14px;
    padding: 18px 50px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.compare-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.compare-button:hover::before {
    left: 100%;
}

.compare-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
}

.compare-button:active {
    transform: translateY(0);
}

.compare-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ==========================================================================
   Comparison Result / Table
   ========================================================================== */

.comparison-result {
    margin-top: 40px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.woo-compare-wrapper {
    background: var(--bg-dark);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.comparison-article-notice {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 16px;
    padding: 20px 25px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

.comparison-article-notice:hover {
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateX(5px);
}

.article-icon {
    width: 40px;
    height: 40px;
    color: #667eea;
    flex-shrink: 0;
}

.article-content {
    flex: 1;
}

.article-content strong {
    display: block;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 5px;
}

.article-content p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
}

.article-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #667eea;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.article-link:hover {
    color: #8193f7;
    gap: 12px;
}

.link-icon {
    width: 18px;
    height: 18px;
}

.woo-compare-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.woo-compare-table thead tr {
    background: var(--bg-dark);
}

.woo-compare-table th {
    padding: 30px 25px;
    text-align: center;
    border-bottom: 2px solid var(--border-color);
}

.compare-attribute-col {
    width: 200px;
    text-align: left !important;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.compare-product-col {
    position: relative;
}

.compare-product-col::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 3px;
    background: var(--accent-color);
    border-radius: 3px 3px 0 0;
}

.compare-product-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 15px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.compare-product-image:hover {
    transform: scale(1.05);
    border-color: var(--accent-color);
}

.compare-product-brand {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.compare-product-name {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.compare-product-price {
    color: var(--accent-color);
    font-size: 24px;
    font-weight: 800;
}

.woo-compare-table tbody tr {
    transition: background 0.2s ease;
}

.woo-compare-table tbody tr:hover {
    background: var(--bg-hover);
}

.woo-compare-table td {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
}

.compare-attribute-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    text-align: left;
}

.compare-attribute-value {
    color: var(--text-primary);
    font-size: 15px;
    text-align: center;
    position: relative;
}

.compare-attribute-value::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--accent-color);
    border-radius: 3px;
    opacity: 0.3;
}

.woo-compare-table tfoot td {
    padding: 30px 25px;
    border-bottom: none;
}

.compare-cta-cell {
    text-align: center;
}

.compare-cta {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    padding: 14px 35px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.compare-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    filter: brightness(1.1);
}

.compare-cta:active {
    transform: translateY(0);
}

/* ==========================================================================
   Loading State
   ========================================================================== */

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    .selector-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .selector-divider {
        padding: 0;
        transform: rotate(90deg);
    }
    
    .vs-badge {
        width: 50px;
        height: 50px;
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .woo-compare-selector-wrapper,
    .woo-compare-wrapper {
        padding: 25px;
        border-radius: 16px;
    }
    
    .selector-column {
        padding: 20px;
    }
    
    .woo-compare-table {
        font-size: 14px;
    }
    
    .compare-product-col::after {
        left: 10%;
        right: 10%;
    }
    
    .compare-product-image {
        width: 60px;
        height: 60px;
    }
    
    .compare-product-name {
        font-size: 16px;
    }
    
    .compare-product-price {
        font-size: 20px;
    }
    
    .compare-attribute-col {
        width: 150px;
    }
    
    .woo-compare-table th,
    .woo-compare-table td {
        padding: 15px;
    }
    
    .comparison-article-notice {
        flex-direction: column;
        text-align: center;
    }
    
    .article-link {
        justify-content: center;
    }
}