/* Changelog Page Styles */

.changelog-page {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #FAFBFC 0%, #F9FAFB 100%);
    min-height: 100vh;
}

/* Changelog Header */
.changelog-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 60px;
    gap: 40px;
}

.header-content h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.subtitle {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 32px;
    max-width: 600px;
}

.header-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 24px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid #E5E7EB;
}

.stat-number {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-gray);
    text-align: center;
}

.header-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

/* Filters Section */
.filters-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    gap: 24px;
    flex-wrap: wrap;
}

.filters {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    border-color: var(--mint-primary);
    color: var(--mint-primary);
}

.filter-btn.active {
    background: var(--mint-primary);
    border-color: var(--mint-primary);
    color: white;
}

.filter-icon {
    font-size: 16px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: white;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    min-width: 250px;
}

.search-box svg {
    color: var(--text-gray);
}

.search-box input {
    border: none;
    outline: none;
    font-size: 14px;
    color: var(--text-dark);
    width: 100%;
}

.search-box input::placeholder {
    color: var(--text-gray);
}

/* Timeline */
.changelog-timeline {
    margin-bottom: 60px;
}

.timeline-month {
    margin-bottom: 60px;
}

.month-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 2px solid #E5E7EB;
}

.month-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0;
}

.update-count {
    font-size: 14px;
    color: var(--text-gray);
    background: #F3F4F6;
    padding: 4px 12px;
    border-radius: 20px;
}

.timeline-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.timeline-item {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid #E5E7EB;
    transition: all 0.3s ease;
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.timeline-item.hidden {
    display: none;
}

.item-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
    padding: 12px;
    background: var(--mint-light);
    border-radius: 12px;
    text-align: center;
}

.date {
    font-size: 18px;
    font-weight: 700;
    color: var(--mint-dark);
    line-height: 1;
}

.year {
    font-size: 12px;
    color: var(--text-gray);
    margin-top: 2px;
}

.item-content {
    flex: 1;
}

.item-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.item-type {
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.item-type.new {
    background: #D1FAE5;
    color: #065F46;
}

.item-type.improvement {
    background: #DBEAFE;
    color: #1E40AF;
}

.item-type.fix {
    background: #FEF3C7;
    color: #92400E;
}

.item-type.security {
    background: #FEE2E2;
    color: #991B1B;
}

.item-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.item-content p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.item-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    font-size: 12px;
    color: var(--text-gray);
    background: #F3F4F6;
    padding: 4px 8px;
    border-radius: 6px;
    font-weight: 500;
}

/* Subscribe Section */
.subscribe-section {
    background: white;
    border-radius: 20px;
    padding: 48px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid #E5E7EB;
}

.subscribe-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.subscribe-content p {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.subscribe-options {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.subscribe-options .btn {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--mint-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 208, 132, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--mint-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 208, 132, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .changelog-header {
        flex-direction: column;
        gap: 24px;
    }
    
    .header-content h1 {
        font-size: 36px;
    }
    
    .header-stats {
        gap: 16px;
    }
    
    .filters-section {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }
    
    .filters {
        justify-content: center;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .timeline-item {
        flex-direction: column;
        gap: 16px;
    }
    
    .item-date {
        align-self: flex-start;
        min-width: auto;
        padding: 8px 12px;
    }
    
    .subscribe-section {
        padding: 32px 24px;
    }
    
    .subscribe-options {
        flex-direction: column;
        align-items: center;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

.uptime-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 24px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid #E5E7EB;
    transition: all 0.3s ease;
}

/* Uptime status indicators */
.uptime-display.uptime-excellent {
    border-left: 4px solid #10B981;
    background: linear-gradient(135deg, #D1FAE5 0%, #ECFDF5 100%);
}

.uptime-display.uptime-good {
    border-left: 4px solid #3B82F6;
    background: linear-gradient(135deg, #DBEAFE 0%, #EFF6FF 100%);
}

.uptime-display.uptime-warning {
    border-left: 4px solid #F59E0B;
    background: linear-gradient(135deg, #FEF3C7 0%, #FFFBEB 100%);
}

.uptime-display.uptime-critical {
    border-left: 4px solid #EF4444;
    background: linear-gradient(135deg, #FEE2E2 0%, #FEF2F2 100%);
}

.uptime-display.uptime-excellent .uptime-value {
    color: #065F46;
}

.uptime-display.uptime-good .uptime-value {
    color: #1E40AF;
}

.uptime-display.uptime-warning .uptime-value {
    color: #92400E;
}

.uptime-display.uptime-critical .uptime-value {
    color: #991B1B;
}