/* Custom CSS for PDF Tool */

/* Root Variables */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 0.5rem;
    --box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

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

.nav-link {
    font-weight: 500;
    transition: var(--transition);
}

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

/* Card Enhancements */
.card {
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

/* Upload Area Styles */
.upload-area {
    border: 3px dashed #dee2e6;
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    background: #fafafa;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: #f0f8ff;
}

.upload-area.dragover {
    border-color: var(--success-color);
    background: #f0fff0;
    transform: scale(1.02);
}

.upload-area .upload-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.upload-area:hover .upload-icon {
    color: var(--primary-color);
}

/* File List Styles */
.file-list {
    max-height: 400px;
    overflow-y: auto;
}

.file-item {
    background: white;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.file-item:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.file-item.processing {
    border-color: var(--warning-color);
    background: #fff8e1;
}

.file-item.success {
    border-color: var(--success-color);
    background: #f0fff4;
}

.file-item.error {
    border-color: var(--danger-color);
    background: #fff5f5;
}

/* Progress Bar Enhancements */
.progress {
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    transition: width 0.3s ease;
}

/* Button Enhancements */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(45deg, var(--primary-color), var(--info-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
}

/* Image Preview Styles */
.image-preview {
    max-width: 200px;
    max-height: 150px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.image-preview:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Rotation Controls */
.rotation-controls {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.rotation-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Sortable List Styles */
.sortable-list {
    min-height: 100px;
}

.sortable-item {
    cursor: move;
    user-select: none;
}

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

.sortable-item.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
}

.drag-handle {
    cursor: grab;
    color: var(--secondary-color);
}

.drag-handle:active {
    cursor: grabbing;
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* File Size Display */
.file-size {
    font-size: 0.875rem;
    color: var(--secondary-color);
    font-family: 'Courier New', monospace;
}

.file-size.reduced {
    color: var(--success-color);
    font-weight: 600;
}

/* Alert Enhancements */
.alert {
    border: none;
    border-radius: var(--border-radius);
}

.alert-dismissible .btn-close {
    padding: 1rem 1rem;
}

/* Footer Styles */
footer {
    border-top: 1px solid #dee2e6;
    margin-top: auto;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .upload-area .upload-icon {
        font-size: 2rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 0.6rem 1.5rem;
        font-size: 1rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .upload-area {
        background: #2c2c2c;
        border-color: #555;
    }
    
    .upload-area:hover {
        background: #3c3c3c;
    }
    
    .file-item {
        background: #2c2c2c;
        border-color: #555;
        color: #fff;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

.bounce-in {
    animation: bounceIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Quality Selection Styles */
.quality-selector {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
}

.quality-option {
    flex: 1;
    padding: 1rem;
    border: 2px solid #dee2e6;
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.quality-option:hover {
    border-color: var(--primary-color);
    background: #f8f9fa;
}

.quality-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.quality-option h6 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.quality-option p {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

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

.status-indicator.processing {
    background: #cce7ff;
    color: #004085;
}

.status-indicator.completed {
    background: #d1ecf1;
    color: #0c5460;
}

.status-indicator.error {
    background: #f8d7da;
    color: #721c24;
}

/* Tooltip Enhancements */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
}

/* Print Styles */
@media print {
    .navbar,
    footer,
    .btn,
    .upload-area {
        display: none !important;
    }
    
    .container {
        max-width: none !important;
    }
}