/* Custom styles for Cold Email Automation System */

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.sidebar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.85);
    padding: 0.875rem 1.25rem;
    border-radius: 0.5rem;
    margin: 0.125rem 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar .nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

.sidebar .nav-link:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.sidebar .nav-link.active {
    color: white;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.15) 100%);
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    font-weight: 600;
}

.sidebar .nav-link.active::before {
    content: '';
    position: absolute;
    left: -0.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: white;
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.sidebar .nav-item.mt-3 {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    margin-top: 1.5rem !important;
}

.sidebar .nav-item.mt-3 .nav-link {
    color: rgba(255, 255, 255, 0.7);
}

.sidebar .nav-item.mt-3 .nav-link:hover {
    color: #ff6b6b;
    background-color: rgba(255, 107, 107, 0.1);
}

.main-content {
    background-color: #f8f9fa;
    min-height: 100vh;
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.stats-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-1px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.2);
}

.progress-bar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.6s ease;
}

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

.badge {
    font-size: 0.75em;
    padding: 0.5em 0.75em;
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

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

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

/* Animation for loading states */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.fa-spin {
    animation: spin 1s linear infinite;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #5a6fd8;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        z-index: 1000;
        transition: left 0.3s ease;
        min-height: 100vh;
    }
    
    .sidebar.show {
        left: 0;
    }
    
    .main-content {
        padding: 1rem;
        margin-left: 0;
    }
    
    .stats-card .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    /* Mobile menu toggle button */
    #sidebarToggle {
        position: fixed;
        top: 1rem;
        left: 1rem;
        z-index: 1001;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }
}

/* Focus states for accessibility */
.sidebar .nav-link:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Enhanced sidebar shadow */
.sidebar {
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

/* Success/Error states */
.text-success {
    color: #28a745 !important;
}

.text-warning {
    color: #ffc107 !important;
}

.text-danger {
    color: #dc3545 !important;
}

.bg-success {
    background-color: #28a745 !important;
}

.bg-warning {
    background-color: #ffc107 !important;
}

.bg-danger {
    background-color: #dc3545 !important;
}