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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.9;
}

main {
    padding: 40px;
}

.main-section {
    animation: fadeIn 0.3s ease-in;
}

.product-master-section,
.pdf-upload-section,
.review-section {
    margin-bottom: 40px;
}

.review-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid #e9ecef;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 15px;
}

.review-header h3 {
    margin: 0;
    color: #667eea;
}

.export-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.export-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.95em;
}

.section-description {
    font-size: 0.95em;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    padding: 12px;
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    border-radius: 4px;
}

.file-upload-area.small {
    padding: 30px 20px;
}

.file-upload-area.small .upload-content svg {
    width: 32px;
    height: 32px;
    margin-bottom: 10px;
}

.file-upload-area.small .upload-content p {
    font-size: 0.95em;
}

.file-hint {
    font-size: 0.85em !important;
    color: #999 !important;
    margin-top: 5px !important;
}

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

.step h2 {
    font-size: 1.8em;
    margin-bottom: 10px;
    color: #667eea;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
}


/* File Upload Area */
.file-upload-area {
    border: 3px dashed #667eea;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    background: #f8f9ff;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.file-upload-area:hover {
    border-color: #764ba2;
    background: #f0f2ff;
    transform: translateY(-2px);
}

.file-upload-area.dragover {
    border-color: #764ba2;
    background: #e8ebff;
    transform: scale(1.02);
}

.upload-content svg {
    color: #667eea;
    margin-bottom: 15px;
}

.upload-content p {
    font-size: 1.1em;
    color: #666;
    margin: 10px 0;
}

.file-name {
    font-weight: 600;
    color: #667eea !important;
    margin-top: 15px !important;
}

.file-list {
    margin-top: 20px;
    text-align: left;
}

.file-item {
    background: white;
    padding: 12px 15px;
    margin: 8px 0;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.file-item .file-info {
    flex: 1;
}

.file-item .file-name {
    font-weight: 600;
    color: #333;
    margin: 0;
}

.file-item .file-size {
    font-size: 0.9em;
    color: #666;
}

.file-item .file-status {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 600;
}

.file-status.pending {
    background: #fff3cd;
    color: #856404;
}

.file-status.processing {
    background: #cfe2ff;
    color: #084298;
}

.file-status.complete {
    background: #d1e7dd;
    color: #0f5132;
}

.file-status.error {
    background: #f8d7da;
    color: #842029;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px 5px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #5a6268;
    transform: translateY(-2px);
}

.btn-secondary:disabled {
    background: #ccc;
    cursor: not-allowed;
    opacity: 0.6;
}

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

.btn-danger:hover {
    background: #c82333;
}

/* Status Messages */
.status-message {
    margin-top: 15px;
    padding: 12px;
    border-radius: 8px;
    font-weight: 500;
}

.status-message.success {
    background: #d1e7dd;
    color: #0f5132;
    border-left: 4px solid #198754;
}

.status-message.error {
    background: #f8d7da;
    color: #842029;
    border-left: 4px solid #dc3545;
}

.status-message.info {
    background: #cfe2ff;
    color: #084298;
    border-left: 4px solid #0d6efd;
}

.status-message.warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}

/* Review Table */
.review-controls {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.bulk-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.bulk-hint {
    font-size: 0.85em;
    color: #666;
    margin: 0;
    font-style: italic;
}

.filter-controls {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.filter-controls input[type="range"] {
    width: 150px;
}

.table-container {
    overflow-x: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid #e9ecef;
}

tbody tr:hover {
    background: #f8f9ff;
}

tbody tr.flagged {
    background: #fff3cd;
}

tbody tr.flagged:hover {
    background: #ffeaa7;
}

.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.85em;
    font-weight: 600;
}

.status-badge.success {
    background: #d1e7dd;
    color: #0f5132;
}

.status-badge.warning {
    background: #fff3cd;
    color: #856404;
}

.status-badge.error {
    background: #f8d7da;
    color: #842029;
}

.confidence-bar {
    width: 100px;
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}

.confidence-fill {
    height: 100%;
    transition: width 0.3s ease;
}

.confidence-fill.high {
    background: #198754;
}

.confidence-fill.medium {
    background: #ffc107;
}

.confidence-fill.low {
    background: #dc3545;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-content h3 {
    margin-bottom: 20px;
    color: #667eea;
}

.progress-bar {
    width: 100%;
    height: 24px;
    background: #e9ecef;
    border-radius: 12px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 12px;
}

#progress-text {
    text-align: center;
    color: #666;
    margin-top: 10px;
}

/* Search Results */
.search-results {
    max-height: 400px;
    overflow-y: auto;
    margin: 15px 0;
    border: 1px solid #e9ecef;
    border-radius: 8px;
}

.search-result-item {
    padding: 12px;
    border-bottom: 1px solid #e9ecef;
    cursor: pointer;
    transition: background 0.2s;
}

.search-result-item:hover {
    background: #f8f9ff;
}

.search-result-item.selected {
    background: #e8ebff;
    border-left: 4px solid #667eea;
}

.search-result-item .code {
    font-weight: 600;
    color: #667eea;
}

.search-result-item .description {
    color: #666;
    font-size: 0.9em;
    margin-top: 4px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

/* Summary */
.summary {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

.summary h3 {
    margin-bottom: 15px;
    color: #667eea;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #e9ecef;
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item .valid {
    color: #198754;
}

.summary-item .invalid {
    color: #dc3545;
}

/* Summary label with tooltip */
.summary-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #667eea;
    color: white;
    font-size: 11px;
    font-weight: bold;
    cursor: help;
    position: relative;
    flex-shrink: 0;
    transition: background-color 0.2s;
}

.tooltip-icon:hover {
    background-color: #5568d3;
}

.tooltip-icon::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    padding: 8px 12px;
    background-color: #333;
    color: white;
    font-size: 12px;
    line-height: 1.4;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 1000;
    max-width: 250px;
    white-space: normal;
    text-align: left;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    word-wrap: break-word;
}

.tooltip-icon::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 2px;
    border: 5px solid transparent;
    border-top-color: #333;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 1001;
}

.tooltip-icon:hover::after,
.tooltip-icon:hover::before {
    opacity: 1;
}

.validation-errors {
    background: #fff3cd;
    padding: 10px;
    border-radius: 4px;
    margin-top: 10px;
}

/* Export Options */
.export-options {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.export-options label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 1.1em;
}

/* Input Fields */
input[type="text"],
input[type="number"] {
    padding: 10px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 1em;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Action Buttons in Table */
.action-btn {
    padding: 6px 12px;
    font-size: 0.85em;
    margin: 0 2px;
}

/* Edit Modal Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 0.95em;
}

.form-group input[type="text"],
.form-group input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 1em;
    transition: border-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    main {
        padding: 20px;
    }

    .review-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .table-container {
        font-size: 0.9em;
    }

    th, td {
        padding: 8px;
    }
}