:root{--primary: #1a73e8;--primary-hover: #1557b0;--primary-light: #e8f0fe;--secondary: #5f6368;--bg: #f5f7fa;--bg-card: #ffffff;--bg-hover: #f1f3f4;--text: #202124;--text-secondary: #5f6368;--text-light: #80868b;--border: #dadce0;--border-light: #e8eaed;--success: #0d904f;--success-bg: #e6f4ea;--warning: #e37400;--warning-bg: #fef7e0;--error: #d93025;--error-bg: #fce8e6;--info: #1a73e8;--info-bg: #e8f0fe;--radius: 8px;--radius-sm: 4px;--radius-lg: 12px;--shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07), 0 2px 4px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1), 0 4px 10px rgba(0, 0, 0, .05);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--transition: .15s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);color:var(--text);background:var(--bg);line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-content{max-width:1200px;margin:0 auto;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}.app-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--primary)}.app-title{font-size:1.25rem;font-weight:600;color:var(--text)}.app-nav{display:flex;gap:4px}.nav-link{padding:8px 16px;border-radius:var(--radius);text-decoration:none;color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:background var(--transition),color var(--transition)}.nav-link:hover{background:var(--bg-hover);color:var(--text)}.nav-link.active{background:var(--primary-light);color:var(--primary)}.app-main{flex:1;max-width:1200px;margin:0 auto;padding:24px;width:100%}h1,h2,h3,h4{color:var(--text);font-weight:600}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-title{font-size:1.5rem;font-weight:600}.page-subtitle{font-size:.875rem;color:var(--text-secondary);margin-top:4px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius);font-size:.875rem;font-weight:500;font-family:var(--font-family);cursor:pointer;transition:all var(--transition);border:1px solid transparent;text-decoration:none;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover)}.btn-secondary{background:var(--bg-card);color:var(--text);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--border)}.btn-outline:hover:not(:disabled){background:var(--primary-light);border-color:var(--primary)}.btn-danger{background:transparent;color:var(--error);border-color:var(--border)}.btn-danger:hover:not(:disabled){background:var(--error-bg);border-color:var(--error)}.btn-sm{padding:6px 12px;font-size:.8125rem}.btn-lg{padding:12px 28px;font-size:1rem}.btn-icon{padding:8px;border-radius:var(--radius);background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:all var(--transition);display:inline-flex;align-items:center;justify-content:center}.btn-icon:hover{background:var(--bg-hover);color:var(--text)}.card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow);overflow:hidden;transition:box-shadow var(--transition),transform var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.card-body{padding:20px}.card-header{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.card-footer{padding:12px 20px;border-top:1px solid var(--border-light);background:var(--bg);display:flex;align-items:center;justify-content:space-between}.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}.project-card{cursor:pointer;position:relative}.project-card:hover{transform:translateY(-2px)}.project-card-color{height:6px;width:100%}.project-card-body{padding:20px}.project-card-title{font-size:1.125rem;font-weight:600;margin-bottom:8px;color:var(--text)}.project-card-desc{font-size:.875rem;color:var(--text-secondary);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.project-card-meta{display:flex;align-items:center;gap:16px;font-size:.8125rem;color:var(--text-light)}.project-card-meta span{display:flex;align-items:center;gap:4px}.project-card-actions{padding:12px 20px;border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:8px}.project-card-actions .btn{padding:6px 12px;font-size:.8125rem}.form-group{margin-bottom:20px}.form-label{display:block;font-size:.875rem;font-weight:500;color:var(--text);margin-bottom:6px}.form-hint{font-size:.75rem;color:var(--text-light);margin-top:4px}.form-input,.form-textarea,.form-select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:.875rem;font-family:var(--font-family);color:var(--text);background:var(--bg-card);transition:border-color var(--transition),box-shadow var(--transition)}.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1a73e826}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-light)}.form-textarea{min-height:100px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-actions{display:flex;gap:12px;margin-top:24px}.color-picker{display:flex;flex-direction:column;gap:6px}.color-picker-label{font-size:.875rem;font-weight:500;color:var(--text)}.color-picker-row{display:flex;align-items:center;gap:10px}.color-picker-input{width:40px;height:40px;border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;padding:2px;background:none}.color-picker-input::-webkit-color-swatch-wrapper{padding:0}.color-picker-input::-webkit-color-swatch{border:none;border-radius:var(--radius-sm)}.color-picker-hex{width:90px;padding:8px 10px;border:1px solid var(--border);border-radius:var(--radius);font-size:.8125rem;font-family:monospace;color:var(--text);text-transform:uppercase}.color-picker-hex:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1a73e826}.file-upload-dropzone{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:40px 24px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg)}.file-upload-dropzone:hover{border-color:var(--primary);background:var(--primary-light)}.file-upload-dropzone.dragging{border-color:var(--primary);background:var(--primary-light);transform:scale(1.01)}.file-upload-dropzone.uploading{cursor:default;border-color:var(--primary)}.upload-icon{color:var(--text-light);margin-bottom:12px}.file-upload-dropzone:hover .upload-icon,.file-upload-dropzone.dragging .upload-icon{color:var(--primary)}.upload-text{font-size:1rem;font-weight:500;color:var(--text);margin-bottom:4px}.upload-hint{font-size:.8125rem;color:var(--text-light);margin-bottom:8px}.upload-formats{font-size:.75rem;color:var(--text-light)}.upload-progress{display:flex;flex-direction:column;align-items:center;gap:12px}.upload-progress p{font-size:.875rem;color:var(--text-secondary)}.image-upload{margin-bottom:16px}.image-upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:20px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg);position:relative}.image-upload-zone:hover{border-color:var(--primary);background:var(--primary-light)}.image-upload-zone.has-preview{padding:0;border-style:solid}.image-preview{width:100%;max-height:200px;object-fit:contain;border-radius:var(--radius);display:block}.image-upload-placeholder{padding:20px;color:var(--text-light);font-size:.875rem}.progress-bar{width:100%;height:4px;background:var(--border-light);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--primary);border-radius:2px;transition:width .3s ease}.progress-fill.indeterminate{width:40%;animation:indeterminate 1.5s ease-in-out infinite}@keyframes indeterminate{0%{transform:translate(-100%)}to{transform:translate(350%)}}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:12px;font-size:.75rem;font-weight:500;white-space:nowrap}.badge-default{background:var(--bg);color:var(--text-secondary)}.badge-success{background:var(--success-bg);color:var(--success)}.badge-warning{background:var(--warning-bg);color:var(--warning)}.badge-error{background:var(--error-bg);color:var(--error)}.badge-info{background:var(--info-bg);color:var(--info)}.episode-list{display:flex;flex-direction:column;gap:2px;margin-top:16px}.episode-row{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius);transition:all var(--transition);position:relative}.episode-row:hover{background:var(--bg-hover);box-shadow:var(--shadow)}.episode-row.processing{opacity:.85}.episode-order{flex-shrink:0;display:flex;align-items:center;justify-content:center}.order-arrows{display:flex;flex-direction:column;align-items:center;gap:1px}.arrow-btn{width:22px;height:16px;display:flex;align-items:center;justify-content:center;font-size:.55rem;color:var(--text-light);border:none;background:none;cursor:pointer;border-radius:3px;transition:all .15s;padding:0;line-height:1}.arrow-btn:hover:not(:disabled){background:var(--primary-light);color:var(--primary)}.arrow-btn:disabled{opacity:.25;cursor:default}.order-number{font-size:.75rem;font-weight:700;color:var(--text-secondary);line-height:1}.episode-thumb-col{flex-shrink:0;width:48px;height:48px;cursor:pointer;border-radius:var(--radius);overflow:hidden;border:1px dashed var(--border);transition:border-color .15s}.episode-thumb-col:hover{border-color:var(--primary)}.episode-thumb-img{width:100%;height:100%;object-fit:cover}.episode-thumb-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--bg);color:var(--text-light)}.episode-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.episode-title{font-size:.875rem;font-weight:500;color:var(--text);cursor:pointer;padding:2px 6px;margin:-2px -6px;border-radius:var(--radius-sm);transition:background var(--transition);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.episode-title:hover{background:var(--bg-hover)}.episode-title-input{font-size:.875rem;font-weight:500;padding:4px 8px;border:1px solid var(--primary);border-radius:var(--radius-sm);outline:none;box-shadow:0 0 0 3px #1a73e826;width:100%;font-family:var(--font-family)}.episode-duration{font-size:.75rem;color:var(--text-light);font-variant-numeric:tabular-nums}.episode-status{flex-shrink:0}.episode-progress{position:absolute;bottom:0;left:0;right:0;height:3px}.episode-progress .progress-bar{height:3px;border-radius:0 0 var(--radius) var(--radius)}.episode-actions{display:flex;gap:6px;flex-shrink:0}.tabs{display:flex;gap:0;border-bottom:2px solid var(--border-light);margin-bottom:24px}.tab{padding:12px 20px;border:none;background:transparent;color:var(--text-secondary);font-size:.875rem;font-weight:500;font-family:var(--font-family);cursor:pointer;transition:all var(--transition);position:relative;border-bottom:2px solid transparent;margin-bottom:-2px}.tab:hover{color:var(--text);background:var(--bg-hover)}.tab.active{color:var(--primary);border-bottom-color:var(--primary)}.section{margin-bottom:32px}.section-title{font-size:1.125rem;font-weight:600;margin-bottom:16px;color:var(--text)}.section-desc{font-size:.875rem;color:var(--text-secondary);margin-bottom:16px}.settings-card{max-width:600px}.settings-card .card-body{padding:24px}.masked-key{font-family:monospace;font-size:.875rem;color:var(--text-light);background:var(--bg);padding:8px 12px;border-radius:var(--radius-sm);margin-bottom:8px}.editor-header{display:flex;align-items:center;gap:16px;margin-bottom:24px}.editor-back{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);text-decoration:none;transition:all var(--transition);flex-shrink:0}.editor-back:hover{background:var(--bg-hover);color:var(--text)}.editor-title-input{font-size:1.5rem;font-weight:600;border:none;outline:none;background:transparent;color:var(--text);flex:1;min-width:0;padding:4px 0;font-family:var(--font-family);border-bottom:2px solid transparent;transition:border-color var(--transition)}.editor-title-input:focus{border-bottom-color:var(--primary)}.editor-actions{display:flex;gap:8px;flex-shrink:0}.preview-frame{width:100%;height:600px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-card)}.preview-actions{margin-top:12px;display:flex;gap:12px}.export-section{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.export-card{padding:24px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);text-align:center}.export-card h3{font-size:1rem;margin-bottom:8px}.export-card p{font-size:.8125rem;color:var(--text-secondary);margin-bottom:16px}.export-code{display:inline-block;background:var(--bg);padding:8px 16px;border-radius:var(--radius);font-family:monospace;font-size:1rem;font-weight:600;color:var(--text);margin-bottom:12px;letter-spacing:2px}.export-link{display:block;font-size:.8125rem;color:var(--primary);word-break:break-all;margin-bottom:12px}.spinner{width:24px;height:24px;border:3px solid var(--border-light);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}.spinner-lg{width:40px;height:40px;border-width:4px}@keyframes spin{to{transform:rotate(360deg)}}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;gap:16px;color:var(--text-secondary);font-size:.875rem}.toast-container{position:fixed;bottom:24px;right:24px;z-index:1000;display:flex;flex-direction:column;gap:8px;max-width:380px}.toast{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:var(--radius);box-shadow:var(--shadow-lg);cursor:pointer;animation:slideIn .2s ease-out;font-size:.875rem}.toast-success{background:var(--success-bg);color:var(--success);border:1px solid var(--success)}.toast-error{background:var(--error-bg);color:var(--error);border:1px solid var(--error)}.toast-info{background:var(--info-bg);color:var(--info);border:1px solid var(--info)}.toast-icon{font-size:1.125rem;flex-shrink:0;font-weight:700}.toast-message{flex:1}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:500;animation:fadeIn .15s ease}.modal{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:500px;width:calc(100% - 48px);max-height:calc(100vh - 48px);overflow-y:auto;animation:scaleIn .15s ease}.modal-header{padding:20px 24px 0}.modal-header h2{font-size:1.25rem}.modal-body{padding:16px 24px}.modal-footer{padding:0 24px 20px;display:flex;justify-content:flex-end;gap:12px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state-icon{font-size:3rem;margin-bottom:16px;opacity:.5}.empty-state h3{font-size:1.125rem;margin-bottom:8px;color:var(--text)}.empty-state p{font-size:.875rem;margin-bottom:20px}@media (max-width: 768px){.header-content{padding:0 16px}.app-main{padding:16px}.project-grid,.form-row{grid-template-columns:1fr}.episode-row{flex-wrap:wrap}.episode-actions{width:100%;justify-content:flex-end;margin-top:8px;padding-top:8px;border-top:1px solid var(--border-light)}.editor-header{flex-wrap:wrap}.editor-title-input{font-size:1.25rem;order:3;width:100%;flex-basis:100%}.export-section{grid-template-columns:1fr}.tabs{overflow-x:auto}}@media (max-width: 480px){.app-title{display:none}.nav-link{padding:8px 12px;font-size:.8125rem}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#00000080;display:flex;align-items:center;justify-content:center;padding:24px;animation:fadeIn .2s ease}.detail-modal{background:var(--bg-card);border-radius:12px;width:100%;max-width:800px;max-height:85vh;display:flex;flex-direction:column;box-shadow:0 20px 60px #00000026;animation:slideUp .25s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.detail-modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 12px;border-bottom:1px solid var(--border-light);gap:12px}.detail-modal-header h2{font-size:1.125rem;font-weight:600;color:var(--text);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.detail-tabs{display:flex;padding:0 24px;border-bottom:1px solid var(--border-light)}.detail-tab{padding:12px 16px;font-size:.8125rem;font-weight:600;color:var(--text-light);border:none;background:none;cursor:pointer;border-bottom:2px solid transparent;transition:all .15s}.detail-tab:hover{color:var(--text-secondary)}.detail-tab.active{color:var(--primary);border-bottom-color:var(--primary)}.detail-body{flex:1;overflow-y:auto;padding:20px 24px 24px}.detail-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.chapters-editor{display:flex;flex-direction:column;gap:8px}.chapter-edit-row{display:flex;align-items:center;gap:8px;padding:8px;background:var(--bg);border-radius:8px;border:1px solid var(--border-light)}.chapter-edit-num{width:28px;height:28px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;flex-shrink:0}.chapter-edit-title{flex:1;min-width:0}.chapter-edit-time{width:70px;text-align:center;flex-shrink:0}.chapter-edit-label{font-size:.75rem;color:var(--text-light);min-width:40px;text-align:center}.transcript-editor{display:flex;flex-direction:column;gap:4px}.transcript-edit-row{display:flex;gap:10px;align-items:flex-start;padding:6px 0;border-bottom:1px solid var(--border-light)}.transcript-edit-time{font-size:.75rem;font-weight:600;color:var(--primary);min-width:44px;padding-top:8px;font-variant-numeric:tabular-nums;flex-shrink:0}.transcript-edit-text{flex:1;font-family:inherit;font-size:.8125rem;line-height:1.5;padding:6px 8px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--text);resize:vertical;transition:border-color .15s,background .15s}.transcript-edit-text:focus{border-color:var(--primary);background:var(--bg);outline:none}@media (max-width: 640px){.detail-modal{max-height:95vh;margin:8px;border-radius:8px}.modal-backdrop{padding:0}.chapter-edit-row{flex-wrap:wrap}}