* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f7fa;
    color: #1f2937;
}

.header {
    background: #111827;
    color: white;
    padding: 28px 40px;
}

.header h1 {
    margin: 0;
    font-size: 28px;
}

.header p {
    margin: 8px 0 0;
    color: #cbd5e1;
}

.container {
    max-width: 1250px;
    margin: 40px auto;
    padding: 0 24px;
}

.project {
    margin-bottom: 45px;
}

.project-header {
    margin-bottom: 18px;
}

.project-header h2 {
    margin: 0;
    font-size: 25px;
    color: #111827;
}

.project-header p {
    margin: 7px 0 0;
    color: #6b7280;
}

.environment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.environment {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 22px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.environment h2 {
    margin-top: 0;
    font-size: 19px;
}

.environment p {
    color: #6b7280;
    font-size: 14px;
}

.release-list {
    margin-top: 18px;
}

.release {
    display: block;
    padding: 14px 16px;
    margin-bottom: 10px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 7px;
    color: #111827;
    text-decoration: none;
    transition: background 0.15s ease;
}

.release:hover {
    background: #f3f4f6;
}

.release-name {
    font-weight: bold;
    font-size: 15px;
}

.release-meta {
    margin-top: 5px;
    font-size: 12px;
    color: #6b7280;
}

.empty {
    color: #9ca3af;
    font-style: italic;
    font-size: 14px;
}

.error {
    display: none;
    margin-bottom: 30px;
    padding: 15px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: #991b1b;
}

.footer {
    text-align: center;
    padding: 30px;
    color: #9ca3af;
    font-size: 13px;
}

@media (max-width: 900px) {
    .environment-grid {
        grid-template-columns: 1fr;
    }

    .header {
        padding: 24px;
    }

    .container {
        margin-top: 25px;
    }
}