* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 50%, #1B5E20 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 50px;
    padding: 40px 20px;
    background: rgba(240, 244, 240, 0.95);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.logo {
    width: 150px;
    height: auto;
    margin: 0 auto 20px;
    display: block;
}

.logo img {
    width: 100%;
    height: auto;
    display: block;
}

h1 {
    font-size: 2.5em;
    color: #2c3e50;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2em;
    color: #7f8c8d;
}

.loading {
    text-align: center;
    padding: 40px;
    background: rgba(240, 244, 240, 0.95);
    border-radius: 10px;
    margin: 20px 0;
}

.spinner {
    border: 4px solid #e0e0e0;
    border-top: 4px solid #4CAF50;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error {
    background: #ff6b6b;
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
}

.section {
    background: rgba(240, 244, 240, 0.95);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.section-title {
    font-size: 1.8em;
    color: #2c3e50;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid #4CAF50;
}

.section-title.collapsible {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: color 0.3s;
}

.section-title.collapsible:hover {
    color: #4CAF50;
}

.collapse-icon {
    font-size: 0.8em;
    transition: transform 0.3s;
    display: inline-block;
}

.collapse-icon.collapsed {
    transform: rotate(-90deg);
}

.collapsible-content {
    max-height: 5000px;
    overflow: hidden;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    opacity: 1;
}

.collapsible-content.collapsed {
    max-height: 0;
    opacity: 0;
}

.release-card {
    background: #f0f4f0;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    border-left: 5px solid #4CAF50;
    transition: transform 0.2s, box-shadow 0.2s;
}

.release-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.release-card.current {
    border-left-color: #4CAF50;
    background: linear-gradient(135deg, #f5fff6 0%, #e8f5e9 100%);
}

.release-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.release-name {
    font-size: 1.5em;
    font-weight: bold;
    color: #2c3e50;
}

.release-tag {
    background: #667eea;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: bold;
}

.release-card.current .release-tag {
    background: #4CAF50;
}

.release-date {
    color: #7f8c8d;
    font-size: 0.9em;
    margin-bottom: 10px;
}

.release-description {
    color: #555;
    line-height: 1.6;
    margin-bottom: 15px;
    max-height: 150px;
    overflow-y: auto;
}

.assets {
    margin-top: 15px;
}

.assets-title {
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}

.asset-link {
    display: inline-block;
    background: #66BB6A;
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 5px;
    margin: 5px 5px 5px 0;
    transition: background 0.3s;
    font-size: 0.9em;
}

.asset-link:hover {
    background: #4CAF50;
}

.release-card.current .asset-link {
    background: #4CAF50;
}

.release-card.current .asset-link:hover {
    background: #45a049;
}

.asset-size {
    font-size: 0.85em;
    opacity: 0.9;
    margin-left: 5px;
}

footer {
    text-align: center;
    padding: 20px;
    color: white;
    margin-top: 40px;
}

footer a {
    color: white;
    text-decoration: underline;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }

    .section {
        padding: 20px;
    }

    .release-header {
        flex-direction: column;
        align-items: flex-start;
    }
}