:root{--bg: #0A0A0B;--bg-elevated: #111113;--bg-hover: #1A1A1E;--surface: #18181B;--border: #27272A;--border-subtle: #1E1E22;--text-primary: #FAFAFA;--text-secondary: #A1A1AA;--text-tertiary: #71717A;--accent-warm: #F59E0B;--accent-glow: rgba(245, 158, 11, .12);--mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;--sans: "Instrument Sans", -apple-system, Helvetica, Arial, sans-serif;font-family:var(--sans);font-size:16px;line-height:1.5;font-weight:400;color:var(--text-primary);background-color:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}.layout{display:flex;flex-direction:row;height:100vh;background-color:var(--bg);overflow:hidden}.content-area{display:flex;flex-direction:column;flex:1;overflow:hidden;padding:8px 0 0 8px}.image-area{flex:1;position:relative;overflow:hidden;background-color:var(--bg)}.image-pane{width:100%;height:100%;display:flex;align-items:center;justify-content:center;overflow:hidden}.image-placeholder{width:100%;height:100%;background-color:var(--bg-elevated)}.key-hint{position:absolute;z-index:100;bottom:20px;left:20px;background:var(--text-primary);color:var(--bg);font-family:var(--mono);font-size:20px;font-weight:600;padding:10px 18px;border-radius:10px;box-shadow:0 2px 16px #0009;pointer-events:none;-webkit-user-select:none;user-select:none;opacity:0;transform:translateY(4px);transition:opacity .12s ease,transform .12s ease}.key-hint--visible{opacity:1;transform:translateY(0)}.keymap-hint{position:absolute;top:16px;left:50%;transform:translate(-50%);max-width:calc(100% - 448px);display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px 8px;background:#0a0a0bbf;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:7px 14px;border-radius:9px;border:1px solid var(--border-subtle);pointer-events:none;-webkit-user-select:none;user-select:none;z-index:5}.keymap-sep{width:1px;height:14px;background:var(--border);margin:0 2px}.keymap-entry{display:inline-flex;align-items:center;gap:3px;white-space:nowrap}.keymap-entry kbd{font-family:var(--mono);font-size:11px;font-weight:500;background:var(--surface);border:1px solid var(--border);border-bottom-width:2px;border-radius:4px;padding:1px 5px;color:var(--text-secondary);line-height:1.5}.keymap-label{font-family:var(--mono);font-size:11px;color:var(--text-tertiary);margin-left:2px}.sidebar{width:260px;flex-shrink:0;background-color:var(--surface);border:1px solid var(--border-subtle);border-radius:12px;margin:8px;padding:24px 20px 40px;display:flex;flex-direction:column;gap:28px;overflow-y:auto;transition:border-color .15s;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.sidebar--focused-panel{border-color:#f59e0b73}.sidebar h2{font-family:var(--mono);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-tertiary)}.slider-row{display:flex;flex-direction:column;gap:8px;padding:8px 10px;border-radius:8px;border:1.5px solid transparent;margin:0 -10px;transition:border-color .15s}.slider-row--focused{border-color:#f59e0b8c;background-color:var(--accent-glow)}.slider-header{display:flex;justify-content:space-between;align-items:baseline}.slider-label{font-size:13px;color:var(--text-secondary)}.slider-value{font-family:var(--mono);font-size:11px;color:var(--text-tertiary);font-variant-numeric:tabular-nums;min-width:28px;text-align:right}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:3px;background:var(--border);border-radius:2px;outline:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:13px;height:13px;border-radius:50%;background:var(--text-primary);cursor:pointer;transition:background 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16px;display:flex;flex-direction:column;gap:7px;min-width:180px;pointer-events:none;-webkit-user-select:none;user-select:none}.export-progress__label{font-family:var(--mono);font-size:12px;font-weight:600;color:var(--text-secondary);text-align:center}.export-progress__track{height:3px;border-radius:2px;background:var(--border);overflow:hidden}.export-progress__fill{height:100%;border-radius:2px;background:var(--accent-warm);transition:width .15s ease}.file-open-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:10}.file-open-btn{background:var(--surface);color:var(--text-primary);border:1px solid var(--border);padding:12px 32px;border-radius:10px;font-family:var(--sans);font-size:15px;font-weight:500;cursor:pointer;transition:background .15s,border-color .15s}.file-open-btn:hover{background:var(--bg-hover);border-color:var(--text-tertiary)}.spinner{width:32px;height:32px;border-radius:50%;border:2px solid var(--border);border-top-color:var(--text-secondary);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.histogram{position:absolute;top:16px;border-radius:8px;background:#0a0a0bb8;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);pointer-events:none}.histogram--tl{left:16px}.histogram--tr{right:16px}.curve-row{padding:8px 10px;border-radius:8px;border:1.5px solid transparent;margin:0 -10px;transition:border-color .15s}.curve-row--focused{border-color:#f59e0b8c;background-color:var(--accent-glow)}.curve-canvas{width:100%;display:block;border-radius:4px}.curve-hint{font-family:var(--mono);font-size:10px;color:var(--text-tertiary);text-align:center;margin-top:6px}.filmstrip{height:110px;flex-shrink:0;display:flex;gap:8px;padding:8px 12px;overflow-x:auto;overflow-y:hidden;background:var(--bg);border:1px solid var(--border-subtle);border-radius:12px;margin:0 0 8px;transition:border-color .15s;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.filmstrip::-webkit-scrollbar{height:4px}.filmstrip::-webkit-scrollbar-track{background:transparent}.filmstrip::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.filmstrip--focused-panel{border-color:#f59e0b73}.filmstrip-item{display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;flex-shrink:0}.filmstrip-item canvas{width:80px;height:60px;border-radius:4px;border:1.5px solid transparent;display:block;background:var(--bg-elevated);transition:border-color .12s}.filmstrip-item--selected canvas{border-color:#64b4ff99;background:#64b4ff0d}.filmstrip-item--active canvas{border-color:#f59e0b99;background:var(--accent-glow)}.filmstrip-label{font-family:var(--mono);font-size:10px;color:var(--text-tertiary);max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;-webkit-user-select:none;user-select:none}.filmstrip-edit-dot{position:absolute;top:4px;right:4px;width:14px;height:14px;display:flex;align-items:center;justify-content:center;pointer-events:none;filter:drop-shadow(0 1px 3px rgba(0,0,0,.9))}