/* PDF Editor Web App - Custom Styles */

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 0.5rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* General Styles */
body {
    background-color: #f5f7fa;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.container {
    max-width: 1200px;
}

/* Navigation */
.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    transform: translateY(-1px);
}

/* Hero Section */
.jumbotron {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.feature-card {
    height: 100%;
}

.feature-card .card-body {
    padding: 2rem;
}

.feature-card .icon-wrapper {
    display: inline-block;
    padding: 1rem;
    background-color: rgba(0, 123, 255, 0.1);
    border-radius: 50%;
}

.step-icon {
    display: inline-block;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 50%;
}

/* Upload Areas */
.upload-area {
    border: 2px dashed #dee2e6;
    border-radius: var(--border-radius);
    background-color: #fafbfc;
    transition: all 0.3s ease;
    cursor: pointer;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(0, 123, 255, 0.05);
}

.upload-area.dragover {
    border-color: var(--success-color);
    background-color: rgba(40, 167, 69, 0.1);
    transform: scale(1.02);
}

.upload-content {
    text-align: center;
    padding: 1rem;
}

/* File List */
.list-group-item {
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.list-group-item:hover {
    background-color: #f8f9fa;
    transform: translateX(5px);
}

.sortable-list .list-group-item {
    cursor: move;
}

.sortable-list .list-group-item:hover {
    background-color: rgba(0, 123, 255, 0.05);
}

.file-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
}

.file-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 123, 255, 0.1);
    border-radius: var(--border-radius);
    margin-right: 1rem;
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.file-details {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

/* Progress Bars */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), #0056b3);
    transition: width 0.3s ease;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #1e7e34);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e0a800);
    color: #212529;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #bd2130);
}

.btn-outline-secondary {
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.btn-outline-secondary:hover {
    background-color: var(--secondary-color);
    color: white;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: #721c24;
    border-left: 4px solid var(--danger-color);
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    color: #0c5460;
    border-left: 4px solid var(--info-color);
}

/* Tabs */
.nav-pills .nav-link {
    border-radius: var(--border-radius);
    margin: 0 0.25rem;
    transition: all 0.3s ease;
}

.nav-pills .nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
}

/* Page Headers */
.page-header {
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 1rem;
}

.page-header h2 {
    color: var(--dark-color);
    font-weight: 600;
}

/* Forms */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

/* Footer */
footer {
    background-color: white !important;
    border-top: 1px solid #e9ecef;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .jumbotron {
        padding: 2rem 1rem !important;
    }
    
    .jumbotron .display-4 {
        font-size: 2rem;
    }
    
    .feature-card .card-body {
        padding: 1.5rem;
    }
    
    .upload-area {
        min-height: 150px;
    }
    
    .file-item {
        flex-direction: column;
        text-align: center;
    }
    
    .file-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
    
    .file-actions {
        margin-top: 0.5rem;
        justify-content: center;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #343a40;
        --dark-color: #f8f9fa;
    }
    
    body {
        background-color: #1a1d20;
        color: #f8f9fa;
    }
    
    .card {
        background-color: #2d3338;
        color: #f8f9fa;
    }
    
    .upload-area {
        background-color: #343a40;
        border-color: #495057;
    }
    
    .list-group-item {
        background-color: #2d3338;
        border-color: #495057;
        color: #f8f9fa;
    }
}

/* Animation Classes */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

/* Utility Classes */
.border-dashed {
    border-style: dashed !important;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-hover {
    transition: box-shadow 0.3s ease;
}

.shadow-hover:hover {
    box-shadow: var(--box-shadow-lg);
}

/* File Type Icons */
.file-type-pdf { color: #dc3545; }
.file-type-image { color: #28a745; }
.file-type-zip { color: #ffc107; }

/* Image Preview */
.image-preview {
    max-width: 120px;
    max-height: 120px;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    cursor: pointer;
}

.image-preview:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.image-preview.size-small {
    max-width: 80px;
    max-height: 80px;
}

.image-preview.size-medium {
    max-width: 120px;
    max-height: 120px;
}

.image-preview.size-large {
    max-width: 160px;
    max-height: 160px;
}

.image-preview-large {
    max-width: 200px;
    max-height: 200px;
    cursor: pointer;
}

/* Rotation controls */
.rotation-controls {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.rotation-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

/* Image rotation classes */
.rotate-0 { transform: rotate(0deg); }
.rotate-90 { transform: rotate(90deg); }
.rotate-180 { transform: rotate(180deg); }
.rotate-270 { transform: rotate(270deg); }

/* Image modal */
.image-modal .modal-body {
    padding: 0;
    text-align: center;
}

.image-modal .modal-body img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
}

/* PDF Preview */
.pdf-preview {
    max-width: 120px;
    max-height: 120px;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    cursor: pointer;
    background-color: #f8f9fa;
}

.pdf-preview:hover {
    border-color: var(--danger-color);
    transform: scale(1.05);
}

.pdf-preview.size-small {
    max-width: 80px;
    max-height: 80px;
}

.pdf-preview.size-medium {
    max-width: 120px;
    max-height: 120px;
}

.pdf-preview.size-large {
    max-width: 160px;
    max-height: 160px;
}

/* PDF item enhanced */
.pdf-item-enhanced {
    padding: 1rem;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.pdf-item-enhanced:hover {
    background-color: rgba(220, 53, 69, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.pdf-info {
    flex: 1;
    min-width: 0;
}

.pdf-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
}

/* PDF no-preview fallback */
.pdf-no-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: var(--border-radius);
    color: var(--danger-color);
    font-size: 2rem;
}

/* File item enhanced */
.file-item-enhanced {
    padding: 1rem;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.file-item-enhanced:hover {
    background-color: rgba(0, 123, 255, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.image-info {
    flex: 1;
    min-width: 0;
}

.image-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
}