/* ============================================
   Tier System Styles - Alibaba Style
   ============================================ */

/* Tier Badges */
.tier-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tier-badge-basic {
    background: linear-gradient(135deg, #6b7280, #9ca3af);
    color: white;
}

.tier-badge-premium {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: white;
}

.tier-badge-enterprise {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    color: white;
}

.tier-badge-gold {
    background: linear-gradient(135deg, #f59e0b, #fcd34d);
    color: white;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.tier-badge-platinum {
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.tier-badge-diamond {
    background: linear-gradient(135deg, #10b981, #34d399);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

/* Tier Cards */
.tier-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tier-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.tier-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.tier-card.featured::before {
    content: 'POPULAR';
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: var(--primary);
    color: white;
    padding: 0.25rem 3rem;
    font-size: 0.75rem;
    font-weight: 700;
    transform: rotate(45deg);
    box-shadow: var(--shadow-md);
}

.tier-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.tier-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.tier-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin: var(--spacing-md) 0;
}

.tier-price-period {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.tier-features {
    list-style: none;
    padding: 0;
    margin: var(--spacing-xl) 0;
}

.tier-feature {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    font-size: 0.9375rem;
}

.tier-feature-icon {
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
}

.tier-feature.disabled {
    color: var(--text-tertiary);
}

.tier-feature.disabled .tier-feature-icon {
    color: var(--text-tertiary);
}

.tier-cta {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-weight: 700;
    margin-top: var(--spacing-lg);
}

/* Tier Comparison Table */
.tier-comparison {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.tier-comparison th,
.tier-comparison td {
    padding: var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.tier-comparison th {
    background: var(--bg-secondary);
    font-weight: 700;
    font-size: 0.9375rem;
}

.tier-comparison td {
    font-size: 0.875rem;
}

.tier-comparison tr:last-child td {
    border-bottom: none;
}

.tier-check {
    color: var(--success);
    font-weight: 700;
    font-size: 1.25rem;
}

.tier-cross {
    color: var(--text-tertiary);
    font-weight: 700;
}

.tier-limited {
    color: var(--warning);
    font-weight: 600;
}

/* Vendor Tier Display */
.vendor-tier-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.vendor-tier-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
}

/* Product Tier Pricing */
.product-tier-pricing {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.tier-pricing-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
}

.tier-pricing-row:last-child {
    border-bottom: none;
}

.tier-pricing-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.tier-pricing-value {
    font-weight: 700;
    color: var(--primary);
}

/* Tier Benefits Banner */
.tier-benefits-banner {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.tier-benefits-banner h3 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.tier-benefits-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    list-style: none;
    padding: 0;
}

.tier-benefits-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
}

/* Responsive */
@media (max-width: 768px) {
    .tier-card.featured {
        transform: scale(1);
    }
    
    .tier-comparison {
        font-size: 0.75rem;
    }
    
    .tier-comparison th,
    .tier-comparison td {
        padding: var(--spacing-md);
    }
}