:root{--bg-deep: #0b1019;--surface-base: #121a27;--surface-card: #141f2e;--surface-elevated: #182334;--surface-hover: #24344b;--surface-active: #2c3e5a;--border-subtle: #2b3b54;--border-strong: #3d5172;--accent-gold: #ffb454;--accent-gold-hover: #ffc272;--accent-gold-dim: rgba(255, 180, 84, .15);--text-primary: #e7edf5;--text-muted: #8f9caf;--text-dim: #607086;--status-error: #ff6b6b;--status-error-bg: rgba(255, 107, 107, .12);--status-success: #8be28b;--status-success-bg: rgba(139, 226, 139, .12);--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--header-height: 54px;--statusbar-height: 28px;--toolbar-width: 52px;--sidebar-width: 270px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden;background-color:var(--bg-deep);color:var(--text-primary);font-family:var(--font-sans);font-size:13px;line-height:1.4;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{display:flex;flex-direction:column;width:100vw;height:100vh;background-color:var(--bg-deep)}.header-bar{display:flex;align-items:center;justify-content:space-between;height:var(--header-height);padding:0 16px;background-color:var(--surface-base);border-bottom:1px solid var(--border-subtle);user-select:none;z-index:10;gap:16px}.header-brand{display:flex;align-items:center;gap:12px}.brand-title-group{display:flex;align-items:baseline;gap:8px}.brand-name{font-size:16px;font-weight:700;letter-spacing:.06em;color:var(--accent-gold)}.dirty-indicator{font-size:10px;color:var(--accent-gold);line-height:1}.brand-tagline{font-size:12px;color:var(--text-muted)}.header-group{display:flex;align-items:center;gap:6px}.header-history{margin-right:auto}.header-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 12px;border-radius:6px;font-family:inherit;font-size:12px;font-weight:500;cursor:pointer;border:1px solid transparent;transition:background-color .15s ease,border-color .15s ease,color .15s ease,opacity .15s ease;user-select:none;white-space:nowrap}.button-sm{height:32px;padding:0 10px;font-size:12px}.button:disabled{opacity:.38;cursor:not-allowed;pointer-events:none}.button-ghost{background-color:transparent;color:var(--text-primary);border-color:var(--border-subtle)}.button-ghost:hover:not(:disabled){background-color:var(--surface-hover);border-color:var(--border-strong)}.button-secondary{background-color:var(--surface-elevated);color:var(--text-primary);border-color:var(--border-subtle)}.button-secondary:hover:not(:disabled){background-color:var(--surface-hover);border-color:var(--border-strong)}.button-primary{background-color:var(--accent-gold);color:#121820;border-color:var(--accent-gold);font-weight:600}.button-primary:hover:not(:disabled){background-color:var(--accent-gold-hover);border-color:var(--accent-gold-hover)}.button-block{width:100%}.btn-icon{font-size:14px;line-height:1}.workspace-layout{display:flex;flex:1;overflow:hidden;position:relative}.tool-rail{display:flex;flex-direction:column;align-items:center;width:var(--toolbar-width);background-color:var(--surface-base);border-right:1px solid var(--border-subtle);padding:12px 0;gap:8px;user-select:none;z-index:5}.tool-button{display:flex;flex-direction:column;align-items:center;justify-content:center;width:40px;height:48px;border-radius:7px;background-color:transparent;border:1px solid transparent;color:var(--text-muted);cursor:pointer;position:relative;transition:all .15s ease}.tool-button:hover{background-color:var(--surface-hover);color:var(--text-primary)}.tool-button.is-active{background-color:var(--surface-elevated);color:var(--accent-gold);border-color:var(--accent-gold);box-shadow:0 0 8px #ffb45433}.tool-icon{display:flex;align-items:center;justify-content:center}.tool-label{font-size:9px;margin-top:2px;font-weight:500}.tool-badge{display:none}.canvas-viewport{flex:1;height:100%;position:relative;overflow:hidden;background-color:#080c13;outline:none;user-select:none;-webkit-user-select:none}.canvas-stage{position:absolute;top:0;left:0;transform-origin:0 0;will-change:transform}.pixel-canvas{display:block;touch-action:none;cursor:crosshair;image-rendering:pixelated;image-rendering:crisp-edges;box-shadow:0 8px 32px #00000073}.canvas-floating-controls{position:absolute;bottom:16px;right:16px;display:flex;align-items:center;background-color:#121a27eb;border:1px solid var(--border-subtle);backdrop-filter:blur(8px);border-radius:8px;padding:3px;gap:2px;box-shadow:0 4px 16px #00000059;user-select:none;z-index:5}.floating-btn{display:inline-flex;align-items:center;justify-content:center;height:28px;min-width:28px;padding:0 8px;border-radius:5px;background:transparent;border:1px solid transparent;color:var(--text-primary);font-family:var(--font-sans);font-size:13px;cursor:pointer;transition:all .12s ease}.floating-btn:hover{background-color:var(--surface-hover);border-color:var(--border-subtle)}.floating-btn-text{font-family:var(--font-mono);font-size:11px;min-width:52px}.floating-btn-fit,.floating-btn-grid{font-size:11px}.floating-btn-grid.is-active{color:var(--accent-gold);background-color:var(--surface-elevated)}.sidebar{width:var(--sidebar-width);background-color:var(--surface-base);border-left:1px solid var(--border-subtle);overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:14px;user-select:none;z-index:5}.sidebar-card{background-color:var(--surface-card);border:1px solid var(--border-subtle);border-radius:8px;padding:12px;display:flex;flex-direction:column;gap:10px}.card-title{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted)}.card-subtitle{font-size:11px;font-weight:500;color:var(--text-muted);margin-top:2px}.color-row{display:flex;align-items:flex-start;gap:10px}.color-preview{width:38px;height:38px;border-radius:6px;border:1px solid var(--border-subtle);position:relative;overflow:hidden;cursor:pointer;flex-shrink:0;box-shadow:inset 0 0 0 1px #ffffff26}.color-picker-input{position:absolute;top:-10px;left:-10px;width:60px;height:60px;opacity:0;cursor:pointer}.hex-container{flex:1;display:flex;flex-direction:column;gap:4px}.hex-input{width:100%;height:38px;background-color:#0b111a;border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-family:var(--font-mono);font-size:13px;font-weight:600;padding:0 10px;text-transform:uppercase;transition:border-color .15s ease}.hex-input:focus{outline:none;border-color:var(--accent-gold)}.hex-input.has-error{border-color:var(--status-error)}.field-error{font-size:11px;color:var(--status-error);line-height:1.3}.palette-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}.palette-swatch{width:100%;aspect-ratio:1;border-radius:5px;border:1px solid rgba(0,0,0,.3);cursor:pointer;position:relative;transition:transform .1s ease,box-shadow .1s ease}.palette-swatch:hover{transform:scale(1.1);z-index:2;box-shadow:0 2px 8px #0006}.palette-swatch.is-active{outline:2px solid var(--accent-gold);outline-offset:1px;z-index:3}.dimension-row{display:flex;align-items:center;gap:8px}.dimension-group{flex:1;display:flex;flex-direction:column;gap:4px}.field-label{font-size:11px;color:var(--text-muted)}.dimension-times{color:var(--text-muted);font-size:16px;margin-top:14px}.dimension-input{width:100%;height:34px;background-color:#0b111a;border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-family:var(--font-mono);font-size:13px;padding:0 8px}.dimension-input:focus{outline:none;border-color:var(--accent-gold)}.help-card{background-color:transparent;border-color:#2b3b5480}.help-list{list-style:none;display:flex;flex-direction:column;gap:6px}.help-list li{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--text-muted)}kbd{display:inline-block;padding:2px 5px;background-color:var(--surface-elevated);border:1px solid var(--border-subtle);border-radius:4px;font-family:var(--font-mono);font-size:10px;color:var(--text-primary);line-height:1}.status-bar{display:flex;align-items:center;height:var(--statusbar-height);padding:0 16px;background-color:var(--surface-base);border-top:1px solid var(--border-subtle);font-size:11px;color:var(--text-muted);gap:16px;user-select:none;z-index:10}.status-item{display:flex;align-items:center}.status-coords{font-family:var(--font-mono);min-width:110px}.status-size{font-family:var(--font-mono);min-width:90px}.status-message{color:var(--text-primary);margin-left:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.modal-backdrop{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:#060a10bf;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;padding:16px}.modal-window{width:100%;max-width:520px;background-color:var(--surface-base);border:1px solid var(--border-subtle);border-radius:10px;box-shadow:0 16px 40px #00000080;display:flex;flex-direction:column;overflow:hidden}.modal-window-sm{max-width:360px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border-subtle)}.modal-title{font-size:14px;font-weight:600;color:var(--text-primary)}.modal-close{background:transparent;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;line-height:1;padding:2px 6px;border-radius:4px}.modal-close:hover{background-color:var(--surface-hover);color:var(--text-primary)}.modal-body{padding:18px;display:flex;flex-direction:column;gap:14px}.modal-warning{padding:8px 12px;background-color:#ffb4541f;border:1px solid rgba(255,180,84,.3);border-radius:6px;color:var(--accent-gold);font-size:12px}.form-group{display:flex;flex-direction:column;gap:6px}.file-dropzone{position:relative;border:2px dashed var(--border-subtle);border-radius:8px;padding:16px;text-align:center;background-color:#0b111a;cursor:pointer;transition:border-color .15s ease}.file-dropzone:hover{border-color:var(--accent-gold)}.file-input{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.dropzone-label{font-size:12px;color:var(--text-muted)}.modal-textarea{width:100%;background-color:#0b111a;border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-family:var(--font-mono);font-size:12px;line-height:1.5;padding:10px;resize:vertical}.modal-textarea:focus{outline:none;border-color:var(--accent-gold)}.field-hint{font-size:11px;color:var(--text-muted)}.modal-feedback{padding:8px 12px;border-radius:6px;font-size:12px;line-height:1.4}.error-feedback{background-color:var(--status-error-bg);border:1px solid rgba(255,107,107,.3);color:var(--status-error)}.info-feedback{background-color:var(--status-success-bg);border:1px solid rgba(139,226,139,.3);color:var(--status-success)}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:12px 18px;border-top:1px solid var(--border-subtle);background-color:#0e1520}@media (max-width: 900px){:root{--sidebar-width: 230px}.brand-tagline,.header-actions .btn-text{display:none}.header-actions .button{padding:0 8px}}@media (max-width: 720px){.workspace-layout{flex-direction:column}.tool-rail{flex-direction:row;width:100%;height:48px;padding:0 12px;border-right:none;border-bottom:1px solid var(--border-subtle)}.tool-button{width:44px;height:38px}.sidebar{width:100%;max-height:200px;border-left:none;border-top:1px solid var(--border-subtle)}}