/* Modern CSS for Document Generator */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition: all 0.2s ease-in-out;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.app-title i {
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.upload-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.upload-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* Search and Filter Bar */
.search-filter-bar {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: var(--shadow-sm);
}

.search-container {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    z-index: 1;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
    background: var(--bg-primary);
}

.clear-search {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.clear-search:hover {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.filter-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.view-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 0.25rem;
}

.view-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.view-btn.active {
    background: var(--primary-color);
    color: white;
}

.folder-filter,
.sort-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.folder-filter:focus,
.sort-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb-item {
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.breadcrumb-item:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

/* Templates Container */
.templates-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    animation: fadeIn 0.3s ease-in-out;
}

.templates-container.list-view {
    grid-template-columns: 1fr;
    gap: 1rem;
}

.templates-container.list-view .template-card,
.templates-container.list-view .folder-card {
    display: flex;
    align-items: center;
    padding: 1rem;
    height: auto;
}

.templates-container.list-view .template-preview {
    width: 80px;
    height: 60px;
    margin-right: 1rem;
    flex-shrink: 0;
}

.templates-container.list-view .template-info {
    flex: 1;
}

/* Folder Cards */
.folder-card {
    background: linear-gradient(135deg, var(--warning-color), #f97316);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.folder-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

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

.folder-card.empty {
    opacity: 0.7;
    border-style: dashed;
}

.folder-card.empty .folder-icon {
    color: var(--text-muted);
}

.folder-card.empty .folder-count {
    color: var(--text-muted);
    font-style: italic;
}

.folder-icon {
    font-size: 2rem;
    opacity: 0.9;
}

.folder-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.folder-count {
    opacity: 0.8;
    font-size: 0.875rem;
}

/* Template Cards */
.template-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    height: 320px;
    display: flex;
    flex-direction: column;
}

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

.template-preview {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.template-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.template-placeholder {
    color: var(--text-muted);
    font-size: 3rem;
}

.template-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.template-card:hover .template-overlay {
    opacity: 1;
}

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

.action-btn {
    background: var(--bg-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.action-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.action-btn.primary {
    background: var(--primary-color);
    color: white;
}

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

.action-btn.danger {
    background: var(--danger-color);
    color: white;
}

.template-info {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.template-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.template-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.template-folder,
.template-date {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.template-folder i,
.template-date i {
    width: 12px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.close-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.modal-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.file-input-container {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.file-input-container:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.file-input-container input[type="file"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-input-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.file-input-display i {
    font-size: 2rem;
    color: var(--text-muted);
}

.folder-input-container {
    position: relative;
}

.folder-input-container input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition);
}

.folder-input-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-help {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.btn-primary,
.btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
}

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

/* Drag and Drop Styles */
.template-card[draggable="true"] {
    cursor: move;
}

.template-card.dragging {
    opacity: 0.5;
    transform: scale(0.95);
}

.folder-card.drag-over {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.folder-card.drag-over::before {
    background: rgba(255, 255, 255, 0.2);
}

/* Context Menu */
.context-menu {
    position: fixed;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    min-width: 180px;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: var(--transition);
}

.context-menu.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.context-menu-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.context-menu-item:hover {
    background: var(--bg-secondary);
}

.context-menu-item.danger {
    color: var(--danger-color);
}

.context-menu-item.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.context-menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

/* Template Info Display */
.template-info-display {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.template-info-display i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.template-info-display span {
    font-weight: 500;
    color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .app-title {
        font-size: 1.25rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .search-filter-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .filter-controls {
        justify-content: space-between;
    }
    
    .templates-container {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .modal {
        width: 95%;
        margin: 1rem;
    }
}

@media (max-width: 480px) {
    .templates-container {
        grid-template-columns: 1fr;
    }
    
    .template-card {
        height: auto;
    }
    
    .template-preview {
        height: 150px;
    }
}