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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 30px 0 20px;
}

header h1 {
    font-size: 1.5rem;
    color: #1a56db;
}

.card {
    background: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.card.success {
    border-left: 4px solid #10b981;
}

.card h2 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.95rem;
}

.form-group input[type="file"] {
    padding: 8px 0;
}

.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.85rem;
    resize: vertical;
}

.separator {
    text-align: center;
    color: #9ca3af;
    font-size: 0.9rem;
    margin: 10px 0;
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    background: #1a56db;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn:hover {
    background: #1e40af;
}

.btn-secondary {
    background: #6b7280;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-small {
    padding: 6px 14px;
    font-size: 0.85rem;
}

.downloads {
    margin: 20px 0;
}

.note {
    color: #6b7280;
    font-size: 0.85rem;
    margin-top: 10px;
}

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.link-back {
    display: inline-block;
    color: #1a56db;
    text-decoration: none;
    font-size: 0.9rem;
}

.link-back:hover {
    text-decoration: underline;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

th, td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid #e5e7eb;
}

th {
    background: #f9fafb;
    font-weight: 600;
}

.serial {
    font-family: monospace;
    font-size: 0.75rem;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.info-table {
    width: 100%;
    margin-bottom: 20px;
}

.info-table th {
    width: 40%;
    text-align: right;
    padding-right: 16px;
    color: #6b7280;
    font-weight: 500;
}

.info-table td {
    font-weight: 500;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 8px;
}

.badge-expired {
    background: #fef2f2;
    color: #991b1b;
}

.badge-valid {
    background: #f0fdf4;
    color: #166534;
}

.preview-actions {
    margin-top: 20px;
}

.pem-section {
    margin-top: 24px;
    border-top: 1px solid #e5e7eb;
    padding-top: 16px;
}

.pem-section label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
}

.pem-wrap {
    position: relative;
}

.pem-wrap textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.8rem;
    background: #f9fafb;
    resize: vertical;
}

.btn-copy {
    position: absolute;
    top: 8px;
    right: 8px;
}

footer {
    text-align: center;
    padding: 20px;
    color: #9ca3af;
    font-size: 0.8rem;
}

.renewing-overlay {
    text-align: center;
    padding: 60px 30px;
}

.renewing-content p {
    margin-top: 16px;
    font-size: 1rem;
    color: #1a56db;
    font-weight: 500;
}

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid #e5e7eb;
    border-top-color: #1a56db;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.download-links a {
    display: inline-block;
    color: #1a56db;
    text-decoration: none;
    font-size: 0.85rem;
    margin-right: 10px;
    font-weight: 500;
}

.download-links a:hover {
    text-decoration: underline;
}