:root{--bg-app: #000000;--bg-panel: #000000;--bg-header: #000000;--bg-elevated: #15151b;--bg-input: #0d0d12;--bg-hover: rgba(255, 255, 255, .08);--preview-backdrop: #000000;--border: rgba(255, 255, 255, .13);--border-strong: rgba(255, 255, 255, .22);--text: #e4e9f2;--text-muted: #93a0b8;--text-faint: #63708a;--text-on-accent: #08101f;--accent: #5b8cff;--accent-hover: #6f9bff;--accent-soft: rgba(91, 140, 255, .16);--success: #3fcf8e;--success-soft: rgba(63, 207, 142, .14);--warning: #e3b341;--warning-soft: rgba(227, 179, 65, .12);--danger: #f4635e;--danger-hover: #ff756f;--danger-soft: rgba(244, 99, 94, .14);--lang-html: #e8703a;--lang-css: #4a90ff;--lang-js: #f0c33c;--radius-sm: 6px;--radius-md: 9px;--radius-lg: 14px;--shadow-md: 0 10px 30px rgba(0, 0, 0, .45);--shadow-lg: 0 24px 60px rgba(0, 0, 0, .55);--transition: .14s cubic-bezier(.4, 0, .2, 1);--header-height: 52px;--status-height: 30px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", "Fira Code", Consolas, "Liberation Mono", monospace;color-scheme:dark}:root[data-theme=light]{--bg-app: #eef1f6;--bg-panel: #ffffff;--bg-header: #f7f9fc;--bg-elevated: #ffffff;--bg-input: #f1f4f9;--bg-hover: rgba(15, 23, 42, .05);--preview-backdrop: #dfe4ec;--border: rgba(15, 23, 42, .1);--border-strong: rgba(15, 23, 42, .18);--text: #1a2233;--text-muted: #4f5a6e;--text-faint: #8a94a6;--text-on-accent: #ffffff;--accent: #2f6bff;--accent-hover: #1d5bf5;--accent-soft: rgba(47, 107, 255, .12);--success: #14875a;--success-soft: rgba(20, 135, 90, .12);--warning: #a96a06;--warning-soft: rgba(169, 106, 6, .12);--danger: #d13c37;--danger-hover: #b93230;--danger-soft: rgba(209, 60, 55, .12);--lang-html: #d2541f;--lang-css: #1d5bf5;--lang-js: #b58406;--shadow-md: 0 10px 26px rgba(15, 23, 42, .12);--shadow-lg: 0 24px 55px rgba(15, 23, 42, .18);color-scheme:light}*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg-app);color:var(--text);font-family:var(--font-sans);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow:hidden}button,input,select{font:inherit;color:inherit}kbd{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 5px;background:var(--bg-hover);border:1px solid var(--border);border-radius:5px;font-family:var(--font-sans);font-size:11px;color:var(--text-muted)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border:2px solid transparent;background-clip:content-box;border-radius:999px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}body.is-resizing,body.is-resizing *{user-select:none!important}body.is-resizing iframe{pointer-events:none}.app{display:grid;grid-template-rows:var(--header-height) minmax(0,1fr) var(--status-height);height:100%;background:var(--bg-app)}.workspace{display:flex;min-height:0;overflow:hidden}.workspace--vertical{flex-direction:column}.workspace--horizontal{flex-direction:row}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--text);font-weight:500;white-space:nowrap;cursor:pointer;transition:background var(--transition),border-color var(--transition),color var(--transition),transform var(--transition)}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn--md{height:34px;padding:0 13px;font-size:13px}.btn--sm{height:28px;padding:0 10px;font-size:12px}.btn--icon{width:34px;height:34px;padding:0}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--text-on-accent);font-weight:600}.btn--primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.btn--subtle,.btn--default{background:var(--bg-elevated);border-color:var(--border);color:var(--text-muted)}.btn--subtle:hover:not(:disabled),.btn--default:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border-strong);color:var(--text)}.btn--danger{background:var(--danger);border-color:var(--danger);color:#fff;font-weight:600}.btn--danger:hover:not(:disabled){background:var(--danger-hover);border-color:var(--danger-hover)}.btn--ghost{color:var(--text-faint)}.btn--ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.toolbar{display:flex;align-items:center;gap:14px;padding:0 14px;background:var(--bg-header);border-bottom:1px solid var(--border)}.toolbar__brand{display:flex;align-items:center;gap:9px;height:26px;padding-right:14px;border-right:1px solid var(--border)}.toolbar__logo{display:grid;place-items:center;width:26px;height:26px;border-radius:8px;background:linear-gradient(140deg,var(--accent),#8f6dff);color:#fff}.toolbar__app-name{font-size:13.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap}.toolbar__project{display:flex;align-items:center;gap:8px;flex:1;min-width:0}.toolbar__name-input{width:100%;max-width:300px;height:32px;padding:0 10px;background:transparent;border:1px solid transparent;border-radius:var(--radius-md);color:var(--text);font-size:13.5px;font-weight:500;text-overflow:ellipsis;transition:background var(--transition),border-color var(--transition)}.toolbar__name-input:hover{background:var(--bg-input);border-color:var(--border)}.toolbar__name-input:focus{background:var(--bg-input);border-color:var(--accent);outline:none}.toolbar__name-input::placeholder{color:var(--text-faint)}.toolbar__status-dot{flex:none;width:7px;height:7px;border-radius:50%;transition:background var(--transition),box-shadow var(--transition)}.toolbar__status-dot.is-dirty{background:var(--warning);box-shadow:0 0 0 3px var(--warning-soft)}.toolbar__status-dot.is-clean{background:var(--success);box-shadow:0 0 0 3px var(--success-soft)}.toolbar__saving{color:var(--text-faint);font-size:11.5px;animation:fade-in .2s ease-out}.toolbar__actions{display:flex;align-items:center;gap:8px}.menu{position:relative}.menu__count{min-width:18px;padding:0 5px;border-radius:999px;background:var(--bg-hover);color:var(--text-faint);font-size:11px;font-variant-numeric:tabular-nums;text-align:center}.menu__chevron{transition:transform var(--transition)}.menu__chevron.is-open{transform:rotate(180deg)}.menu__popover{position:absolute;top:calc(100% + 8px);right:0;z-index:40;width:320px;max-height:70vh;overflow:hidden auto;padding:6px;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);animation:pop-in .12s ease-out}.menu__popover--wide{width:300px;padding:12px}@keyframes pop-in{0%{opacity:0;transform:translateY(-4px)}}.menu__separator{height:1px;margin:8px 4px;background:var(--border)}.menu__actions{display:flex;flex-direction:column;gap:2px}.menu__search{width:100%;height:30px;margin:2px 0 6px;padding:0 10px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:12.5px}.menu__search:focus{outline:none;border-color:var(--accent)}.menu__list{list-style:none;display:flex;flex-direction:column;gap:2px}.menu__row{display:flex;align-items:center;gap:2px}.menu__item{flex:1;display:flex;align-items:center;gap:9px;min-width:0;padding:8px 10px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text);text-align:left;cursor:pointer;transition:background var(--transition),color var(--transition)}.menu__item:hover{background:var(--bg-hover)}.menu__item.is-active{background:var(--accent-soft);color:var(--accent)}.menu__item--action{width:100%;color:var(--text-muted);font-weight:500}.menu__item--action:hover{color:var(--text)}.menu__name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.menu__meta{flex:none;color:var(--text-faint);font-size:11px;font-variant-numeric:tabular-nums}.menu__row-action{flex:none;display:grid;place-items:center;width:30px;height:30px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-faint);cursor:pointer;transition:background var(--transition),color var(--transition)}.menu__row-action:hover{background:var(--bg-hover);color:var(--text)}.menu__row-action--danger:hover{background:var(--danger-soft);color:var(--danger)}.menu__empty{padding:14px 10px;color:var(--text-faint);font-size:12.5px;text-align:center}.field{margin-bottom:12px}.field__label{display:block;margin-bottom:6px;color:var(--text-faint);font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase}.segmented{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:3px;padding:3px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md)}.segmented__option{display:inline-flex;align-items:center;justify-content:center;gap:5px;height:28px;padding:0 6px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-faint);font-size:11.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;transition:background var(--transition),color var(--transition)}.segmented__option:hover{color:var(--text)}.segmented__option.is-active{background:var(--bg-elevated);color:var(--text);box-shadow:0 1px 2px #0003}.stepper{display:flex;align-items:center;gap:4px;padding:3px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md)}.stepper__button{width:28px;height:26px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-muted);font-size:15px;cursor:pointer}.stepper__button:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.stepper__button:disabled{opacity:.4;cursor:not-allowed}.stepper__value{flex:1;text-align:center;font-size:12.5px;font-variant-numeric:tabular-nums}.switch{display:flex;align-items:center;gap:10px;padding:7px 2px;cursor:pointer}.switch__text{flex:1;min-width:0;display:flex;flex-direction:column}.switch__label{font-size:13px}.switch__hint{color:var(--text-faint);font-size:11px}.switch__input{position:absolute;opacity:0;width:0;height:0}.switch__track{flex:none;width:34px;height:20px;padding:2px;background:var(--bg-input);border:1px solid var(--border-strong);border-radius:999px;transition:background var(--transition),border-color var(--transition)}.switch__thumb{display:block;width:14px;height:14px;border-radius:50%;background:var(--text-faint);transition:transform var(--transition),background var(--transition)}.switch__input:checked+.switch__track{background:var(--accent);border-color:var(--accent)}.switch__input:checked+.switch__track .switch__thumb{background:#fff;transform:translate(14px)}.switch__input:focus-visible+.switch__track{outline:2px solid var(--accent);outline-offset:2px}.pane-header{display:flex;align-items:center;gap:9px;flex:none;height:36px;padding:0 8px 0 12px;background:var(--bg-header);border-bottom:1px solid var(--border)}.pane-header__dot{flex:none;width:7px;height:7px;border-radius:50%}.pane-header__dot--live{background:var(--success);box-shadow:0 0 0 3px var(--success-soft)}.pane-header__title{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--text);white-space:nowrap}.pane-header__file{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-mono);font-size:11.5px;color:var(--text-faint)}.pane-header__meta{margin-left:auto;padding-left:8px;font-size:11px;color:var(--text-faint);font-variant-numeric:tabular-nums;white-space:nowrap}.pane-header__controls{margin-left:auto;display:flex;align-items:center;gap:6px}.pane-header .btn--icon{width:26px;height:26px}.editor-area{display:flex;min-width:0;min-height:0;background:var(--bg-app)}.editor-area--horizontal{flex-direction:row;height:58%}.editor-area--vertical{flex-direction:column;width:55%;height:100%}.editor-pane{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0;background:var(--bg-panel);overflow:hidden}.editor-area--horizontal>.editor-pane{border-right:1px solid var(--border)}.editor-area--horizontal>.editor-pane:last-child{border-right:none}.editor-area--vertical>.editor-pane{border-bottom:1px solid var(--border)}.editor-pane__body{flex:1;min-height:0;overflow:hidden}.editor-pane__body .cm-theme,.editor-pane__body .cm-editor{height:100%}.app--code .editor-area,.app--preview .preview{flex:1;width:auto;height:auto}.editor-area--compact{flex-direction:column;flex:1;width:auto;height:auto}.tabs{display:flex;gap:4px;flex:none;padding:6px 8px;background:var(--bg-header);border-bottom:1px solid var(--border)}.tab{display:inline-flex;align-items:center;justify-content:center;gap:7px;flex:1;height:32px;background:transparent;border:1px solid transparent;border-radius:var(--radius-md);color:var(--text-faint);font-size:12.5px;font-weight:600;cursor:pointer;transition:background var(--transition),color var(--transition)}.tab__dot{width:7px;height:7px;border-radius:50%;background:var(--tab-accent, var(--text-faint));opacity:.5;transition:opacity var(--transition)}.tab:hover{background:var(--bg-hover);color:var(--text-muted)}.tab.is-active{background:var(--bg-elevated);border-color:var(--border);color:var(--text)}.tab.is-active .tab__dot{opacity:1}.editor-pane--compact{border-right:none}.preview{display:flex;flex-direction:column;min-width:0;min-height:0;height:42%;background:var(--bg-panel);border-top:1px solid var(--border);overflow:hidden}.workspace--horizontal>.preview{width:45%;height:100%;border-top:none;border-left:1px solid var(--border)}.preview__body{flex:1;display:flex;min-height:0;background:var(--preview-backdrop)}.preview__stage{flex:1;display:flex;justify-content:center;min-width:0;min-height:0;overflow:auto}.preview__stage.is-constrained{padding:14px}.preview__frame{flex:1 1 auto;min-width:0;height:100%;border:none;background:#fff}.preview__stage.is-constrained .preview__frame{flex:0 0 auto;max-width:100%;border-radius:10px;box-shadow:var(--shadow-md)}.preview:fullscreen{width:100%!important;height:100%!important;border:none}.devices{display:flex;gap:2px;padding:2px;background:var(--bg-input);border:1px solid var(--border);border-radius:999px}.devices__option{height:22px;padding:0 9px;background:transparent;border:none;border-radius:999px;color:var(--text-faint);font-size:11px;font-variant-numeric:tabular-nums;cursor:pointer;transition:background var(--transition),color var(--transition)}.devices__option:hover{color:var(--text)}.devices__option.is-active{background:var(--bg-elevated);color:var(--text)}.chip{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 9px;background:transparent;border:1px solid var(--border);border-radius:999px;color:var(--text-faint);font-size:11.5px;font-weight:500;white-space:nowrap;cursor:pointer;transition:background var(--transition),color var(--transition),border-color var(--transition)}.chip:hover{background:var(--bg-hover);color:var(--text)}.chip.is-active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.chip.has-errors{border-color:var(--danger);color:var(--danger)}.chip--stale{border-color:var(--warning);color:var(--warning);background:var(--warning-soft)}.chip__badge{min-width:16px;padding:0 4px;border-radius:999px;background:var(--danger);color:#fff;font-size:10px;font-weight:700;text-align:center}.console{display:flex;flex-direction:column;flex:none;width:360px;min-width:0;background:var(--bg-panel);border-left:1px solid var(--border)}.console__header{display:flex;align-items:center;gap:10px;flex:none;height:32px;padding:0 8px 0 12px;background:var(--bg-header);border-bottom:1px solid var(--border)}.console__title{font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted)}.console__filters{display:flex;gap:2px}.console__filter{display:inline-flex;align-items:center;gap:4px;height:21px;padding:0 7px;background:transparent;border:none;border-radius:999px;color:var(--text-faint);font-size:11px;cursor:pointer;transition:background var(--transition),color var(--transition)}.console__filter:hover{background:var(--bg-hover);color:var(--text)}.console__filter.is-active{background:var(--accent-soft);color:var(--accent)}.console__filter-count{min-width:14px;padding:0 3px;border-radius:999px;font-size:9.5px;font-weight:700;color:#fff}.console__filter-count.is-error{background:var(--danger)}.console__filter-count.is-warn{background:var(--warning);color:#221a05}.console__actions{margin-left:auto;display:flex;align-items:center;gap:4px}.console__action{display:inline-flex;align-items:center;gap:4px;height:22px;padding:0 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var(--transition)}.gutter:after{content:"";position:absolute;inset:0;margin:auto;background:var(--border-strong);border-radius:999px}.gutter:hover{background:var(--accent-soft)}.gutter.gutter-horizontal{cursor:col-resize}.gutter.gutter-horizontal:after{width:2px;height:26px}.gutter.gutter-vertical{cursor:row-resize}.gutter.gutter-vertical:after{width:26px;height:2px}.status-bar{display:flex;align-items:center;gap:14px;padding:0 8px 0 14px;background:var(--bg-header);border-top:1px solid 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ease-out}.palette__panel{width:min(620px,100%);max-height:70vh;display:flex;flex-direction:column;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;animation:pop-in .14s ease-out}.palette__search{display:flex;align-items:center;gap:10px;flex:none;padding:0 14px;height:50px;border-bottom:1px solid var(--border);color:var(--text-faint)}.palette__input{flex:1;min-width:0;height:100%;background:transparent;border:none;color:var(--text);font-size:14.5px}.palette__input:focus{outline:none}.palette__hint{flex:none}.palette__results{flex:1;min-height:0;overflow:auto;padding:6px}.palette__empty{padding:26px;color:var(--text-faint);text-align:center;font-size:13px}.palette__item{display:flex;align-items:center;gap:11px;width:100%;padding:9px 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