/* Professional Frontend Styling for Changelog Manager - KasiryeLabs */

.changelog-container {
    max-width: 1000px;
    margin: 40px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: #333;
}

/* Filter Tabs - Modern Look */
.changelog-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 15px;
}

.changelog-filter-btn {
    background: transparent;
    border: 1px solid #eee;
    padding: 8px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    color: #666;
}

.changelog-filter-btn:hover {
    background: #f8f9fa;
    border-color: #ddd;
}

.changelog-filter-btn.active {
    background: #4a6cf7;
    border-color: #4a6cf7;
    color: #fff;
    box-shadow: 0 4px 12px rgba(74, 108, 247, 0.2);
}

/* Two-Column Layout - Enhanced */
.changelog-item {
    display: flex;
    gap: 50px;
    padding: 50px 0;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.3s ease;
}

.changelog-item:last-child {
    border-bottom: none;
}

.changelog-left {
    flex: 0 0 160px;
    text-align: left;
}

.changelog-version {
    font-size: 20px;
    font-weight: 800;
    color: #4a6cf7;
    margin-bottom: 8px;
    display: block;
    letter-spacing: -0.5px;
}

.changelog-date {
    font-size: 13px;
    color: #a0a0a0;
    font-weight: 500;
}

.changelog-right {
    flex: 1;
}

.changelog-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 12px 0;
    color: #111;
    line-height: 1.2;
}

.changelog-description {
    font-size: 16px;
    line-height: 1.7;
    color: #555;
    margin-bottom: 25px;
}

/* Categorized Sections - Clean and Modern */
.changelog-sections {
    margin-top: 20px;
    display: grid;
    gap: 20px;
}

.changelog-cat-section {
    padding: 15px;
    background: #fcfcfc;
    border-radius: 10px;
    border: 1px solid #f0f0f0;
}

.changelog-cat-title {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-weight: 800;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.changelog-cat-title span {
    font-size: 16px;
}

.changelog-cat-title.improvements { color: #10b981; }
.changelog-cat-title.fixes { color: #ef4444; }
.changelog-cat-title.patches { color: #3b82f6; }

.changelog-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    font-size: 14px;
    line-height: 1.6;
    color: #4b5563;
}

.changelog-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    font-weight: 700;
    color: #d1d5db;
}

/* Responsive */
@media (max-width: 768px) {
    .changelog-item {
        flex-direction: column;
        gap: 20px;
        padding: 30px 0;
    }
    .changelog-left {
        flex: none;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .changelog-version {
        margin-bottom: 0;
    }
}

/* Roadmap Styling */
.roadmap-container {
    display: flex;
    gap: 20px;
    margin: 40px 0;
}
.roadmap-column {
    flex: 1;
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #eee;
}
.roadmap-column h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
}
.roadmap-item {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    font-weight: 500;
    color: #444;
}
.roadmap-column.planned h3 { color: #3b82f6; border-color: #3b82f6; }
.roadmap-column.in-progress h3 { color: #f59e0b; border-color: #f59e0b; }
.roadmap-column.completed h3 { color: #10b981; border-color: #10b981; }