:root {
    --primary-color: #0d6efd;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --dark-color: #212529;
    --light-bg: #f8f9fa;
}

body {
    background-color: var(--light-bg);
    min-height: 100vh;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    font-weight: 600;
}

.card-body {
    background-color: #fff;
}

#preview-area {
    min-height: 300px;
    background-color: var(--light-bg);
}

#preview-area i {
    opacity: 0.3;
}

#thumbnails {
    min-height: 120px;
    padding: 10px;
    background-color: var(--light-bg);
    border-radius: 0.25rem;
}

#thumbnails img {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#thumbnails img:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

#current-image {
    max-height: 500px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

#image-viewer {
    background-color: var(--dark-color);
    border-radius: 0.5rem;
    overflow: hidden;
}

#ocr-results-card .table {
    margin-bottom: 0;
}

#ocr-results-card code {
    font-size: 0.75rem;
    word-break: break-all;
}

#recent-scans .list-group-item {
    border: none;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 0.75rem 1rem;
}

#recent-scans .list-group-item:last-child {
    border-bottom: none;
}

#recent-scans a:hover {
    background-color: var(--light-bg);
}

.toast {
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
}

.toast.bg-success {
    background-color: var(--success-color) !important;
}

.toast.bg-danger {
    background-color: var(--danger-color) !important;
}

.toast.bg-warning {
    background-color: var(--warning-color) !important;
    color: #000;
}

.toast.bg-info {
    background-color: var(--info-color) !important;
    color: #000;
}

.form-label {
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
    color: #495057;
}

.form-select, .form-control {
    border-radius: 0.375rem;
}

.form-check-label {
    font-size: 0.875rem;
}

.btn-group-sm .btn {
    padding: 0.25rem 0.5rem;
}

.badge {
    font-weight: 500;
}

#scanner-type-display {
    font-size: 0.875rem;
}

#scanner-type-display i {
    margin-right: 0.5rem;
}

#advanced-options h6 {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 0.75rem;
}

@media (max-width: 991px) {
    .col-lg-4, .col-lg-8 {
        margin-bottom: 1rem;
    }
    
    #current-image {
        max-height: 300px;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    #thumbnails img {
        width: 70px !important;
        height: 70px !important;
    }
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

#connection-status {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
}

.modal-content {
    border-radius: 0.5rem;
    border: none;
}

#settings-modal .alert {
    font-size: 0.875rem;
}

#toast {
    min-width: 280px;
}

#toast .toast-header {
    background-color: rgba(255,255,255,0.9);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeIn 0.3s ease;
}

#thumbnails img {
    animation: fadeIn 0.2s ease;
}