:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--bg-card: #1c2128;--border: #30363d;--text-primary: #e6edf3;--text-secondary: #8b949e;--text-muted: #6e7681;--accent: #58a6ff;--accent-hover: #79c0ff;--accent-bg: rgba(56, 139, 253, .15);--success: #3fb950;--warning: #d29922;--danger: #f85149;--danger-bg: rgba(248, 81, 73, .15)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans SC,Helvetica,Arial,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.5}#root{min-height:100vh}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0d1117,#161b22,#1a1e2e)}.login-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:40px;width:380px;box-shadow:0 16px 48px #0006}.login-card h1{font-size:24px;font-weight:600;text-align:center;margin-bottom:8px}.login-card .subtitle{color:var(--text-secondary);text-align:center;font-size:14px;margin-bottom:32px}.login-card input{width:100%;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:15px;outline:none;transition:border-color .2s}.login-card input:focus{border-color:var(--accent)}.login-card button[type=submit]{width:100%;margin-top:16px;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s}.login-card button[type=submit]:hover{background:var(--accent-hover)}.login-error{color:var(--danger);font-size:13px;text-align:center;margin-top:12px}.app-layout{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.app-header h1{font-size:18px;font-weight:600;display:flex;align-items:center;gap:8px}.app-header .header-actions{display:flex;align-items:center;gap:12px}.btn{padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);transition:all .2s;display:inline-flex;align-items:center;gap:6px}.btn:hover{background:var(--border)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-danger{color:var(--danger)}.btn-danger:hover{background:var(--danger-bg)}.btn-sm{padding:4px 10px;font-size:13px}.main-content{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:24px}.tabs{display:flex;gap:2px;border-bottom:1px solid var(--border);margin-bottom:24px}.tab{padding:10px 20px;background:none;border:none;color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;border-bottom:2px solid transparent;transition:all .2s}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.upload-area{border:2px dashed var(--border);border-radius:12px;padding:60px 40px;text-align:center;cursor:pointer;transition:all .3s;background:var(--bg-secondary)}.upload-area:hover,.upload-area.dragover{border-color:var(--accent);background:var(--accent-bg)}.upload-icon{font-size:48px;margin-bottom:16px;opacity:.6}.upload-area h3{font-size:18px;margin-bottom:8px}.upload-area p{color:var(--text-secondary);font-size:14px}.upload-area input[type=file]{display:none}.progress-section{margin-top:24px}.progress-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:24px}.progress-card h3{font-size:16px;margin-bottom:16px}.progress-bar-bg{background:var(--bg-tertiary);border-radius:8px;height:8px;overflow:hidden;margin-bottom:12px}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),#a371f7);border-radius:8px;transition:width .5s ease}.progress-bar-fill.indeterminate{width:30%!important;animation:indeterminate 1.5s infinite ease-in-out}@keyframes indeterminate{0%{transform:translate(-100%)}to{transform:translate(400%)}}.progress-status{color:var(--text-secondary);font-size:14px}.status-step{display:flex;align-items:center;gap:8px;padding:8px 0;font-size:14px}.status-step .step-icon{width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}.status-step.done .step-icon{background:var(--success);color:#fff}.status-step.active .step-icon{background:var(--accent);color:#fff;animation:pulse 1.5s infinite}.status-step.pending .step-icon{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-muted)}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.subtitle-editor{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;overflow:hidden}.editor-toolbar{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.editor-toolbar .toolbar-left{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-secondary)}.editor-toolbar .toolbar-right{display:flex;gap:8px}.subtitle-list{max-height:500px;overflow-y:auto}.subtitle-item{display:grid;grid-template-columns:50px 140px auto 1fr;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);align-items:start;transition:background .15s}.subtitle-item:hover{background:var(--bg-tertiary)}.subtitle-item:last-child{border-bottom:none}.subtitle-num{color:var(--text-muted);font-size:13px;font-weight:600;padding-top:6px}.subtitle-time{font-size:12px;color:var(--text-secondary);font-family:SF Mono,Monaco,Cascadia Code,monospace;padding-top:6px;line-height:1.6}.subtitle-text textarea{width:100%;background:var(--bg-primary);border:1px solid var(--border);border-radius:6px;color:var(--text-primary);padding:8px 10px;font-size:14px;font-family:inherit;resize:vertical;min-height:40px;outline:none;transition:border-color .2s}.subtitle-text textarea:focus{border-color:var(--accent)}.history-list{display:flex;flex-direction:column;gap:8px}.history-item{background:var(--bg-secondary);border:1px solid var(--border);border-radius:10px;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;transition:all .2s}.history-item:hover{border-color:var(--accent);background:var(--bg-card)}.history-item-info h4{font-size:15px;font-weight:500;margin-bottom:4px}.history-item-info p{font-size:13px;color:var(--text-secondary)}.history-item-actions{display:flex;gap:8px}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state .empty-icon{font-size:48px;margin-bottom:16px;opacity:.4}.empty-state h3{font-size:16px;color:var(--text-primary);margin-bottom:8px}.empty-state p{font-size:14px}.toast-container{position:fixed;top:72px;right:24px;z-index:1000;display:flex;flex-direction:column;gap:8px}.toast{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:12px 16px;font-size:14px;box-shadow:0 8px 24px #0000004d;display:flex;align-items:center;gap:8px;animation:slideIn .3s ease;min-width:280px}.toast.success{border-color:var(--success)}.toast.error{border-color:var(--danger)}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.lang-toggle{font-weight:600;font-size:12px!important;padding:3px 10px!important;border-radius:5px!important;letter-spacing:.3px;width:auto!important;margin:0!important;background:var(--bg-tertiary)!important;border:1px solid var(--border)!important;color:var(--text-secondary)!important;cursor:pointer;transition:all .2s}.lang-toggle:hover{color:var(--text-primary)!important;border-color:var(--accent)!important;background:var(--accent-bg)!important}.login-lang{position:absolute;top:14px;right:14px}.login-card{position:relative}.spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.subtitle-play{padding-top:6px}.btn-play{width:30px;height:30px;border-radius:50%;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-secondary);font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;padding:0;line-height:1}.btn-play:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-bg)}.btn-play.playing{border-color:var(--warning);color:var(--warning);background:#d2992226}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.main-content{padding:16px}.subtitle-item{grid-template-columns:40px 1fr auto;gap:8px}.subtitle-time{grid-column:2;padding-top:0}.subtitle-play{grid-column:3}.subtitle-text{grid-column:1 / -1}.login-card{width:90%;padding:24px}}