/* Main Admin Styles */
:root {
    --primary: #4361ee;
    --secondary: #3f37c9;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #4cc9f0;
    --info: #4895ef;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: #f5f7fb;
}

.login-page {
    display: flex;
    align-items: center;
    min-height: 100vh;
    background-color: var(--light);
}

.login-container {
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
    padding: 20px;
}

.login-card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
}

.sidebar {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    color: white;
    min-height: 100vh;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    border-radius: 5px;
    margin-bottom: 5px;
    padding: 10px 15px;
    transition: all 0.3s;
}

.sidebar .nav-link:hover, .sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.1);
    color: white;
}

.sidebar .nav-link i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.main-content {
    padding: 30px;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

.card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    font-weight: 600;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: var(--dark);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background-color: var(--secondary);
    border-color: var(--secondary);
}

.navbar-brand {
    font-weight: 700;
}

.badge {
    font-weight: 500;
}

.form-control, .form-select {
    padding: 10px 15px;
    border-radius: 5px;
    border: 1px solid #e0e0e0;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.25);
}

.alert {
    border-radius: 5px;
}

/* Certificate Preview */
.certificate-preview {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid #eee;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .sidebar {
        min-height: auto;
    }
    .main-content {
        padding: 15px;
    }
}