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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Flash Messages */
.flash-messages {
    margin: 1rem 0;
}

.flash {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.flash-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.flash-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.flash-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.flash-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #229954;
}

.btn-warning {
    background-color: #f39c12;
    color: white;
}

.btn-warning:hover {
    background-color: #e67e22;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-info {
    background-color: #3498db;
    color: white;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.btn-block {
    display: block;
    width: 100%;
    margin-bottom: 0.5rem;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 2rem 0;
}

.login-box {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: #666;
    margin-bottom: 1.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
}

.form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #666;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Downloads Page */
.downloads-page {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.downloads-page h1 {
    margin-bottom: 0.5rem;
}

.lead {
    color: #666;
    margin-bottom: 2rem;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.download-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid #e9ecef;
}

.card-icon {
    font-size: 3rem;
    font-weight: bold;
    color: #3498db;
    margin-bottom: 1rem;
}

.download-card h2 {
    margin-bottom: 1rem;
}

.download-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.info-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #ddd;
}

.instructions h3 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.instructions ol {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.instructions li {
    margin-bottom: 0.5rem;
}

/* Admin Dashboard */
.admin-dashboard {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid #e9ecef;
}

.stat-card.stat-active {
    border-color: #27ae60;
}

.stat-card.stat-revoked {
    border-color: #e74c3c;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-size: 0.875rem;
}

.certificates-table-container {
    margin-top: 2rem;
}

.certificates-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.certificates-table th {
    background-color: #f8f9fa;
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #ddd;
}

.certificates-table td {
    padding: 0.75rem;
    border-bottom: 1px solid #eee;
}

.certificates-table tr:hover {
    background-color: #f8f9fa;
}

.certificates-table tr.revoked {
    opacity: 0.6;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-active {
    background-color: #d4edda;
    color: #155724;
}

.badge-revoked {
    background-color: #f8d7da;
    color: #721c24;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: #666;
}

.admin-actions {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #ddd;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Certificate Detail */
.certificate-detail {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.certificate-info {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.info-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
}

.info-card h2 {
    margin-bottom: 1rem;
}

.info-card dl {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 1rem;
}

.info-card dt {
    font-weight: 600;
    color: #666;
}

.info-card dd {
    margin: 0;
}

.certificate-actions {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
}

.certificate-actions h2 {
    margin-bottom: 1rem;
}

.delete-form {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #ddd;
}

/* Build Installers */
.build-installers-page {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.info-box {
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 2rem;
}

.build-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.build-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    border: 2px solid #e9ecef;
}

.build-card h2 {
    margin-bottom: 1rem;
}

.build-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.build-notes {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #ddd;
}

.build-notes ul {
    margin-left: 1.5rem;
}

.build-notes li {
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .certificate-info {
        grid-template-columns: 1fr;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}