static/style.css

/* Custom CSS for Fraud Detection System */
body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.container-fluid {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    margin: 20px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card {
    border: none;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    border: none;
    padding: 1.5rem;
}

.form-control, .form-select {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.btn-primary {
    background: linear-gradient(45deg, #007bff, #0056b3);
    border: none;
    border-radius: 25px;
    padding: 12px 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

.progress {
    height: 25px;
    border-radius: 15px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 15px;
    transition: width 0.6s ease;
}

.badge {
    border-radius: 20px;
    padding: 8px 15px;
}

.text-primary {
    color: #007bff !important;
}

.display-4 {
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.lead {
    font-size: 1.1rem;
}

.alert {
    border: none;
    border-radius: 10px;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Animation for icons */
.fas {
    transition: all 0.3s ease;
}

.card-header .fas {
    margin-right: 10px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container-fluid {
        margin: 10px;
        padding: 15px;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .btn-lg {
        padding: 10px 25px;
        font-size: 1rem;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #007bff;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* Loading animation */
@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

.loading {
    animation: pulse 2s infinite;
}

/* Results card styling */
#results .card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

/* Form validation states */
.is-valid {
    border-color: #28a745;
}

.is-invalid {
    border-color: #dc3545;
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(45deg, #007bff, #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}