:root{--bg: #111214;--bg-panel: #1a1c1f;--bg-elevated: #232529;--border: #2e3136;--text: #e8eaed;--text-dim: #9aa0a8;--accent: #4c9ffe;--accent-dim: #2d6cb5;--danger: #e05c5c;--radius: 10px;--panel-w: 340px;--header-h: 52px;color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;overflow:hidden}body{background:var(--bg);color:var(--text);font-family:Hiragino Kaku Gothic ProN,Yu Gothic UI,Segoe UI,system-ui,sans-serif;font-size:13px;-webkit-font-smoothing:antialiased;touch-action:manipulation}button{font:inherit;color:inherit;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;padding:7px 12px;cursor:pointer;transition:background .15s;user-select:none;-webkit-user-select:none}button:hover{background:#2b2e33}button:active{background:#34383e}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--accent-dim);border-color:var(--accent-dim)}button.primary:hover{background:var(--accent)}button.icon{padding:6px 9px;line-height:1}input[type=file]{display:none}.app{display:flex;flex-direction:column;height:100%}.header{height:var(--header-h);display:flex;align-items:center;gap:8px;padding:0 12px;background:var(--bg-panel);border-bottom:1px solid var(--border);flex-shrink:0;overflow-x:auto;scrollbar-width:none}.header::-webkit-scrollbar{display:none}.header button{white-space:nowrap;flex-shrink:0}.header .logo{font-weight:700;font-size:15px;white-space:nowrap;background:linear-gradient(120deg,#6db4ff,#b78bff);-webkit-background-clip:text;background-clip:text;color:transparent;margin-right:4px}.header .spacer{flex:1}.header .file-info{color:var(--text-dim);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:30vw}.main{flex:1;display:flex;min-height:0}.preview-area{flex:1;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;background:repeating-conic-gradient(#17181b 0% 25%,#131417 0% 50%) 0 0 / 24px 24px}.preview-area canvas{max-width:calc(100% - 24px);max-height:calc(100% - 24px);width:auto;height:auto;box-shadow:0 6px 32px #0000008c;touch-action:none;transform-origin:center center}.preview-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-dim);text-align:center;padding:24px}.preview-empty .drop-hint{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 48px;display:flex;flex-direction:column;gap:12px;align-items:center}.preview-empty.drag-over .drop-hint{border-color:var(--accent);background:#4c9ffe0f}.preview-empty h2{font-size:17px;color:var(--text)}.preview-empty .formats{font-size:11px;max-width:420px;line-height:1.6}.zoom-indicator{position:absolute;bottom:10px;left:10px;background:#141619d9;border:1px solid var(--border);padding:3px 10px;border-radius:20px;font-size:11px;color:var(--text-dim);pointer-events:none}.loading-overlay{position:absolute;inset:0;background:#0c0d0fb3;display:flex;align-items:center;justify-content:center;z-index:5;font-size:14px;gap:10px}.spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.side-panel{width:var(--panel-w);background:var(--bg-panel);border-left:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;min-height:0}.panel-scroll{flex:1;overflow-y:auto;overscroll-behavior:contain;padding-bottom:40px}.panel-scroll::-webkit-scrollbar{width:8px}.panel-scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.section{border-bottom:1px solid var(--border)}.section-header{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;cursor:pointer;font-weight:600;font-size:12.5px;user-select:none}.section-header:hover{background:#ffffff08}.section-header .chev{color:var(--text-dim);transition:transform .15s;font-size:10px}.section-header .chev.open{transform:rotate(90deg)}.section-body{padding:4px 14px 14px}.slider-row{display:grid;grid-template-columns:86px 1fr 40px;align-items:center;gap:8px;padding:4px 0}.slider-row .label{font-size:12px;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer}.slider-row .value{font-size:11.5px;text-align:right;font-variant-numeric:tabular-nums;color:var(--text)}.slider-row .value.nonzero{color:var(--accent)}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{height:3px;background:var(--border);border-radius:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:#d7dbe0;margin-top:-5.5px;border:none;box-shadow:0 1px 4px #00000080}input[type=range]::-moz-range-track{height:3px;background:var(--border);border-radius:2px}input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#d7dbe0;border:none}input[type=range].hue-slider::-webkit-slider-runnable-track{height:8px;border-radius:4px;background:linear-gradient(to right,#f55,#ff5 17%,#5f5 33%,#5ff,#55f 67%,#f5f 83%,#f55)}input[type=range].hue-slider::-webkit-slider-thumb{margin-top:-3px}.histogram{padding:10px 14px 4px}.histogram canvas{width:100%;height:80px;border-radius:6px;background:#0c0d0f;border:1px solid var(--border)}.exif-line{padding:4px 14px 8px;font-size:10.5px;color:var(--text-dim);display:flex;gap:10px;flex-wrap:wrap}.curve-editor{user-select:none}.curve-channels{display:flex;gap:4px;margin-bottom:8px}.curve-channels button{flex:1;padding:4px 0;font-size:11px;border-radius:6px}.curve-channels button.active{border-color:var(--accent);color:var(--accent)}.curve-svg{width:100%;aspect-ratio:1;background:#0c0d0f;border:1px solid var(--border);border-radius:8px;touch-action:none;display:block}.hsl-tabs{display:flex;gap:4px;margin-bottom:8px}.hsl-tabs button{flex:1;padding:4px 0;font-size:11px;border-radius:6px}.hsl-tabs button.active{border-color:var(--accent);color:var(--accent)}.band-dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:5px;vertical-align:-1px}.preset-category{font-size:11px;color:var(--text-dim);margin:10px 0 6px;font-weight:600}.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.preset-btn{text-align:left;font-size:11.5px;padding:9px 10px;line-height:1.3}.preset-btn.active{border-color:var(--accent);background:#4c9ffe1a}.preset-btn small{display:block;color:var(--text-dim);font-size:10px;margin-top:2px}.ai-panel{display:flex;flex-direction:column;gap:10px}.ai-ref-thumb{width:100%;max-height:120px;object-fit:contain;border-radius:8px;border:1px solid var(--border);background:#0c0d0f}.ai-buttons{display:flex;gap:6px}.ai-buttons button{flex:1;font-size:12px}.ai-progress{font-size:11px;color:var(--text-dim);line-height:1.5;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;padding:10px}.ai-progress-head{display:flex;align-items:center;gap:8px;margin-bottom:7px}.ai-progress-label{flex:1;color:var(--text);font-size:12px}.ai-progress-pct{color:var(--accent);font-size:12px;font-variant-numeric:tabular-nums;font-weight:600}.ai-progress .spinner{width:13px;height:13px;flex-shrink:0}.ai-progress .bar{height:5px;background:var(--border);border-radius:3px;overflow:hidden}.ai-progress .bar>div{height:100%;background:var(--accent);transition:width .3s;border-radius:3px}.ai-progress .bar.indeterminate>div{width:35%;animation:bar-slide 1.3s ease-in-out infinite}@keyframes bar-slide{0%{margin-left:-35%}to{margin-left:100%}}.ai-progress-detail{margin-top:6px;font-size:10.5px}.ai-reasoning{font-size:12px;line-height:1.6;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;padding:10px;white-space:pre-line}.ai-note{font-size:10.5px;color:var(--text-dim);line-height:1.6}.transform-buttons{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}.transform-buttons button{font-size:11.5px;padding:6px 10px}.transform-buttons button.active{border-color:var(--accent);color:var(--accent)}.modal-backdrop{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;padding:16px}.modal{background:var(--bg-panel);border:1px solid var(--border);border-radius:14px;padding:20px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:14px}.modal h3{font-size:15px}.modal .row{display:flex;align-items:center;justify-content:space-between;gap:10px}.modal .row label{color:var(--text-dim);font-size:12px}.modal select{font:inherit;color:inherit;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;padding:6px 10px}.modal .actions{display:flex;gap:8px;justify-content:flex-end}.toast{position:fixed;bottom:18px;left:50%;transform:translate(-50%);background:#3a1e1e;border:1px solid var(--danger);color:#ffd9d9;padding:10px 18px;border-radius:10px;font-size:12.5px;z-index:200;max-width:90vw}.mobile-tabs{display:none}@media (max-width: 768px){.main{flex-direction:column}.side-panel{width:100%;height:45%;border-left:none;border-top:1px solid var(--border)}.mobile-tabs{display:flex;overflow-x:auto;gap:4px;padding:8px 10px;border-bottom:1px solid var(--border);flex-shrink:0;scrollbar-width:none}.mobile-tabs::-webkit-scrollbar{display:none}.mobile-tabs button{white-space:nowrap;font-size:12px;padding:6px 12px;border-radius:16px}.mobile-tabs button.active{background:var(--accent-dim);border-color:var(--accent-dim)}.section{border-bottom:none}.section-header{display:none}.section-body{padding:10px 14px 20px}.header .file-info{display:none}.header{gap:5px;padding:0 8px}.header button{padding:6px 9px;font-size:12px}.header .logo{font-size:13px}:root{--header-h: 46px}}