/* ============================================
   PDF Form Detector - Enterprise UI Styles
   ============================================ */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --sidebar-width: 250px;
    --header-height: 60px;
}

/* Base Styles */
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: #f8f9fa;
    min-height: 100vh;
}

/* Main Content Area */
.main-content {
    padding-top: calc(var(--header-height) + 16px);
    min-height: 100vh;
}

/* Page Transitions */
.page-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.page-content.active {
    display: block;
}

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

/* Stat Cards */
.stat-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1) !important;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Upload Zone */
.upload-zone {
    border: 3px dashed #dee2e6;
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: #0d6efd;
    background: linear-gradient(135deg, #e7f1ff 0%, #cfe2ff 100%);
    transform: scale(1.01);
}

.upload-zone .upload-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(220,53,69,0.3);
}

.upload-zone .upload-icon i {
    font-size: 3rem;
    color: white;
}

.upload-zone-mini {
    border: 2px dashed #dee2e6;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.upload-zone-mini:hover {
    border-color: #0d6efd;
    background: #e7f1ff;
}

/* Feature Icons */
.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Document Cards */
.document-card {
    transition: all 0.3s ease;
    cursor: pointer;
}

.document-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.12) !important;
}

.document-card .card-img-top {
    height: 160px;
    object-fit: cover;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.document-card .pdf-icon {
    font-size: 4rem;
    color: #dc3545;
}

/* PDF Viewer */
.pdf-viewer-container {
    position: relative;
    background: #525659;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
}

#pdfCanvasWrapper {
    position: relative;
    display: inline-block;
}

#pdfCanvas {
    display: block;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

#fieldOverlays {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

.field-overlay {
    position: absolute;
    border: 2px solid;
    background: rgba(255,255,255,0.2);
    pointer-events: auto;
    cursor: pointer;
    transition: all 0.2s ease;
}

.field-overlay:hover {
    background: rgba(255,255,255,0.4);
    transform: scale(1.02);
}

.field-overlay.text_field,
.field-overlay.text-field {
    border-color: #0d6efd;
    background: rgba(13, 110, 253, 0.15);
}

.field-overlay.checkbox {
    border-color: #198754;
    background: rgba(25, 135, 84, 0.15);
}

.field-overlay.signature {
    border-color: #ffc107;
    background: rgba(255, 193, 7, 0.15);
}

.field-overlay.date_field,
.field-overlay.date-field {
    border-color: #0dcaf0;
    background: rgba(13, 202, 240, 0.15);
}

.pdf-navigation {
    background: #f8f9fa;
    padding: 12px;
    text-align: center;
    border-top: 1px solid #dee2e6;
}

/* Fields List */
.fields-list {
    max-height: 400px;
    overflow-y: auto;
}

.field-item {
    padding: 12px 16px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
    transition: background 0.2s ease;
}

.field-item:hover {
    background: #f8f9fa;
}

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

.field-item .field-type-badge {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Status Badges */
.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.status-badge.processing {
    background: #fff3cd;
    color: #664d03;
}

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

.status-badge.uploaded {
    background: #cff4fc;
    color: #055160;
}

/* Loading Overlay */
#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* Dark Mode */
[data-bs-theme="dark"] {
    --bs-body-bg: #1a1d21;
    --bs-body-color: #e9ecef;
}

[data-bs-theme="dark"] .card {
    background-color: #212529;
    border-color: #373b3e;
}

[data-bs-theme="dark"] .table {
    --bs-table-bg: transparent;
}

[data-bs-theme="dark"] .upload-zone {
    background: linear-gradient(135deg, #2d3238 0%, #212529 100%);
    border-color: #495057;
}

[data-bs-theme="dark"] .upload-zone:hover {
    background: linear-gradient(135deg, #3d4248 0%, #2d3238 100%);
    border-color: #0d6efd;
}

[data-bs-theme="dark"] .stat-card {
    background-color: #212529;
}

[data-bs-theme="dark"] .bg-light {
    background-color: #2d3238 !important;
}

[data-bs-theme="dark"] .table-light {
    --bs-table-bg: #2d3238;
    --bs-table-border-color: #373b3e;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-track {
    background: #2d3238;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #495057;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .stat-icon {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .upload-zone {
        padding: 40px 20px;
    }

    .upload-zone .upload-icon {
        width: 80px;
        height: 80px;
    }

    .upload-zone .upload-icon i {
        font-size: 2.5rem;
    }

    .pdf-viewer-container {
        min-height: 400px;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Toast Customization */
.toast {
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

/* Button Enhancements */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

/* Card Enhancements */
.card {
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    font-weight: 600;
}

/* Table Enhancements */
.table > :not(caption) > * > * {
    padding: 1rem;
}

/* Form Controls */
.form-control, .form-select {
    border-radius: 8px;
    padding: 0.625rem 1rem;
}

.form-control:focus, .form-select:focus {
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

/* Empty State */
#emptyDocuments {
    padding: 60px 20px;
}

#emptyDocuments i {
    opacity: 0.3;
}