* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f4f7fa;
    color: #333;
}

/* Navbar dengan Gradasi */
.navbar {
    background: linear-gradient(90deg, #007bff, #00c4ff);
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 600;
    color: #fff !important;
    transition: color 0.3s ease;
}

.navbar-brand i {
    font-size: 1.8rem;
    margin-right: 0.5rem;
}

.navbar-nav .nav-link {
    color: #fff !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: background 0.3s ease, color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

/* Kartu File dan Statistik */
.file-card, .stats-card {
    background: #fff;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.file-card:hover, .stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1) !important;
    background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.file-preview {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid #e9ecef;
}

/* Dropzone */
.dropzone {
    border: 2px dashed #007bff;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    background: #fff;
    transition: all 0.3s ease;
}

.dropzone.dragover {
    border-color: #00c4ff;
    background: linear-gradient(180deg, #e6f3ff, #d0e7ff);
    transform: scale(1.02);
}

.dropzone-content i {
    transition: transform 0.3s ease;
}

.dropzone.dragover .dropzone-content i {
    transform: scale(1.1);
}

/* Tab */
.nav-tabs {
    border-bottom: 2px solid #e9ecef;
}

.nav-tabs .nav-link {
    color: #495057;
    font-weight: 500;
    border: none;
    border-radius: 0;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

.nav-tabs .nav-link.active {
    color: #fff;
    background: linear-gradient(90deg, #007bff, #00c4ff);
    border: none;
}

.nav-tabs .nav-link:hover {
    color: #0056b3;
    background: rgba(0, 123, 255, 0.1);
}

/* Tombol Kustom */
.btn-primary {
    background: linear-gradient(90deg, #007bff, #00c4ff);
    border: none;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn-primary:hover {
    background: linear-gradient(90deg, #0056b3, #0096cc);
    transform: translateY(-2px);
}

.btn-gradient {
    background: linear-gradient(90deg, #007bff, #00c4ff);
    border: none;
    border-radius: 4px;
    padding: 0.3rem 0.6rem;
    font-size: 0.9rem;
    color: #fff;
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn-gradient:hover {
    background: linear-gradient(90deg, #0056b3, #0096cc);
    transform: translateY(-2px);
}

.btn-success, .btn-info, .btn-warning, .btn-danger {
    border-radius: 4px;
    padding: 0.3rem 0.6rem;
    font-size: 0.9rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
}

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
    transform: translateY(-2px);
}

.btn-info {
    background-color: #17a2b8;
    border-color: #17a2b8;
}

.btn-info:hover {
    background-color: #138496;
    border-color: #117a8b;
    transform: translateY(-2px);
}

.btn-warning {
    background-color: #ffc107;
    border-color: #ffc107;
}

.btn-warning:hover {
    background-color: #e0a800;
    border-color: #d39e00;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
    transform: translateY(-2px);
}

/* SweetAlert2 Kustom */
.swal-modern {
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.swal-title {
    font-weight: 600;
    color: #333;
}

.swal-content {
    color: #555;
}

.swal-modern .btn-primary {
    background: linear-gradient(90deg, #007bff, #00c4ff);
    border: none;
}

.swal-modern .btn-primary:hover {
    background: linear-gradient(90deg, #0056b3, #0096cc);
}

.swal-modern .btn-secondary {
    background-color: #6c757d;
    border: none;
}

.swal-modern .btn-secondary:hover {
    background-color: #5a6268;
}

/* Modal */
.modal-content {
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.modal-header {
    background: linear-gradient(90deg, #007bff, #00c4ff);
    color: #fff;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.modal-title {
    font-weight: 600;
}

.modal-footer .btn {
    border-radius: 4px;
}

/* Progress Bar */
.progress {
    border-radius: 4px;
    background-color: #e9ecef;
}

.progress-bar {
    background: linear-gradient(90deg, #28a745, #34ce57);
    transition: width 0.3s ease;
}

/* Footer */
footer {
    background: linear-gradient(180deg, #f8f9fa, #e9ecef);
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
}

/* Search Input */
.search-input {
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-input:focus {
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
    outline: none;
}

/* Responsivitas */
@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.2rem;
    }

    .navbar-brand i {
        font-size: 1.4rem;
    }

    .file-card .card-body {
        padding: 0.75rem;
    }
    
    .file-preview {
        width: 30px;
        height: 30px;
    }
    
    .btn-sm {
        padding: 0.2rem 0.4rem;
        font-size: 0.8rem;
    }
    
    .dropzone {
        padding: 1rem;
    }

    .nav-tabs .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .modal-dialog {
        margin: 0.5rem;
    }
}