/* Custom CSS for Mail Management System */
:root {
    --bs-primary: #007bff;
    --bs-secondary: #6c757d;
    --bs-light: #f8f9fa;
    --bs-white: #ffffff;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bs-light);
}

.navbar-brand {
    font-weight: 600;
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border-radius: 0.5rem;
}

.card-header {
    background-color: var(--bs-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    font-weight: 600;
}

.table {
    background-color: var(--bs-white);
}

.table th {
    border-top: none;
    font-weight: 600;
    color: var(--bs-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn {
    font-weight: 500;
    border-radius: 0.375rem;
}

.btn-copy {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.stats-card {
    background: linear-gradient(135deg, var(--bs-primary), #0056b3);
    color: white;
}

.stats-card .card-body {
    padding: 1.5rem;
}

.stats-number {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.stats-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.alert {
    border: none;
    border-radius: 0.5rem;
}

.badge {
    font-weight: 500;
}

.mail-item {
    background-color: var(--bs-white);
    border: 1px solid rgba(0, 0, 0, 0.125);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.mail-credentials {
    background-color: #f8f9fa;
    border-radius: 0.375rem;
    padding: 0.75rem;
    font-family: 'Courier New', monospace;
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

.chart-container {
    position: relative;
    height: 400px;
}

@media (max-width: 768px) {
    .stats-number {
        font-size: 1.5rem;
    }
    
    .table-responsive {
        border: none;
    }
    
    .mail-credentials {
        font-size: 0.875rem;
    }
}

/* Login page styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bs-white);
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.login-header {
    text-align: center;
    padding: 2rem 2rem 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.login-header i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.login-header h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

.login-body {
    padding: 2rem;
}

.login-body .form-control {
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.login-body .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.login-body .input-group-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: 2px solid transparent;
    border-radius: 0.5rem 0 0 0.5rem;
}

.login-body .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.login-body .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.login-body .alert {
    border-radius: 0.5rem;
    border: none;
    padding: 1rem;
}

.login-body hr {
    margin: 2rem 0;
    border-color: #e9ecef;
}

.login-body code {
    background: #f8f9fa;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
}

/* Sharing page styles */
.share-page {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    min-height: 100vh;
    padding: 2rem 0;
}

.share-card {
    background: var(--bs-white);
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Animation effects */
.login-card {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .login-container {
        padding: 0.5rem;
    }
    
    .login-header {
        padding: 1.5rem 1.5rem 1rem;
    }
    
    .login-header i {
        font-size: 2.5rem;
    }
    
    .login-body {
        padding: 1.5rem;
    }
}