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

.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.card-img-top {
    transition: transform 0.2s ease-in-out;
}

.card-img-top:hover {
    transform: scale(1.02);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.btn {
    border-radius: 6px;
    font-weight: 500;
}

.form-control {
    border-radius: 6px;
    border: 1px solid #dee2e6;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.alert {
    border-radius: 8px;
    border: none;
}

.input-group .form-control {
    border-radius: 6px 0 0 6px;
}

.input-group .btn {
    border-radius: 0 6px 6px 0;
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card-body .d-flex {
        flex-direction: column;
    }
    
    .btn-sm {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }
}

/* 다크 모드 지원 */
@media (prefers-color-scheme: dark) {
    .bg-light {
        background-color: #343a40 !important;
    }
    
    .card {
        background-color: #495057;
        color: white;
    }
    
    .text-muted {
        color: #adb5bd !important;
    }
}