body {
    background-color: #000000;
    color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.card {
    background-color: #1a1a1a;
    border: 1px solid #333;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(136, 255, 77, 0.1);
}

.card-header {
    background-color: #2a2a2a;
    border-bottom: 1px solid #333;
    border-top-left-radius: 15px !important;
    border-top-right-radius: 15px !important;
}

.card-header h1 {
    color: #ffffff;
}

#lengthValue {
    color: #ffffff;
    margin-top: 0.5rem;
}

.generate-btn {
    background-color: #88ff4d;
    border: none;
    color: #000000 !important;
    font-weight: 600;
    transition: all 0.3s ease;
}

.generate-btn:hover {
    background-color: #70cc3d;
    color: #000000 !important;
    transform: translateY(-1px);
}

.result-container {
    transition: all 0.3s ease;
}

.form-range::-webkit-slider-thumb {
    cursor: pointer;
}

.form-range::-moz-range-thumb {
    cursor: pointer;
}

.input-group {
    background: var(--bs-dark);
    border-radius: 5px;
}

#generatedPassword {
    font-family: monospace;
    font-size: 1.2em;
    background-color: #2a2a2a;
    color: #ffffff;
    border: 1px solid #333;
}

#strengthIndicator {
    margin-top: 1rem;
}

.progress {
    background-color: #2a2a2a;
    border-radius: 4px;
    overflow: hidden;
    height: 8px;
}

.progress-bar {
    transition: width 0.3s ease;
}

#strengthText {
    margin-bottom: 0.5rem;
    text-transform: capitalize;
}

.form-label, .form-check-label {
    color: #ffffff;
}

.form-control {
    background-color: #2a2a2a;
    border: 1px solid #333;
    color: #ffffff;
}

.form-control:focus {
    background-color: #2a2a2a;
    border-color: #88ff4d;
    box-shadow: 0 0 0 0.25rem rgba(136, 255, 77, 0.25);
    color: #ffffff;
}

.form-control:readonly {
    background-color: #2a2a2a;
}

.btn-outline-light {
    border-color: #88ff4d;
    color: #88ff4d;
}

.btn-outline-light:hover {
    background-color: #88ff4d;
    border-color: #88ff4d;
    color: #000000;
}

.alert-danger {
    background-color: #2a0000;
    border-color: #5c0000;
    color: #ff4444;
}

.btn-success {
    background-color: #88ff4d !important;
    border-color: #88ff4d !important;
    color: #000000 !important;
}