body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f5f7fb;
    color: #1f2937;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px;
}

.header {
    margin-bottom: 24px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}

.header h1 {
    margin: 0 0 8px;
}

.language-select select {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    background: #ffffff;
}

.card {
    background: #ffffff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 6px 16px rgba(31, 41, 55, 0.08);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    gap: 12px;
}

.card-title {
    margin: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.form-control {
    padding: 10px 12px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

.btn-primary {
    background: #2563eb;
    color: #ffffff;
}

.btn-secondary {
    background: #e5e7eb;
    color: #111827;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid #e5e7eb;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.badge-next {
    background: rgba(59, 130, 246, 0.12);
    color: #2563eb;
}

.badge-installed {
    background: rgba(16, 185, 129, 0.12);
    color: #059669;
}

.badge-available {
    background: rgba(245, 158, 11, 0.12);
    color: #b45309;
}