:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;--font-mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;--bg: #f1f5f9;--surface: #ffffff;--surface-muted: #f8fafc;--surface-hover: #f1f5f9;--surface-active: #e2e8f0;--border: #cbd5e1;--border-subtle: #e2e8f0;--border-strong: #94a3b8;--text: #0f172a;--text-secondary: #334155;--muted: #64748b;--muted-light: #94a3b8;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-soft: #eff6ff;--accent-border: #bfdbfe;--accent-text: #1e40af;--green: #10b981;--green-dark: #065f46;--green-soft: #ecfdf5;--green-border: #a7f3d0;--amber: #f59e0b;--amber-dark: #92400e;--amber-soft: #fffbeb;--amber-border: #fde68a;--red: #ef4444;--red-dark: #991b1b;--red-soft: #fef2f2;--red-border: #fecaca;--shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .05);--shadow-card: 0 1px 3px 0 rgba(15, 23, 42, .07), 0 1px 2px -1px rgba(15, 23, 42, .05);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .08), 0 2px 4px -2px rgba(15, 23, 42, .05);--shadow-dropdown: 0 10px 15px -3px rgba(15, 23, 42, .1), 0 4px 6px -4px rgba(15, 23, 42, .06);--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-pill: 9999px;color:var(--text);background:var(--bg)}*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.app-header{background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;top:0;z-index:30}.app-brand{display:flex;align-items:center;gap:12px}.app-logo{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius-md);background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;font-weight:800;font-size:1.1rem;box-shadow:var(--shadow-sm);border:1px solid #334155;letter-spacing:-.03em}.app-title-group{display:flex;flex-direction:column}.app-title-row{display:flex;align-items:center;gap:8px}.app-title{margin:0;font-size:1.125rem;font-weight:700;color:var(--text);letter-spacing:-.02em}.app-tag{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;padding:2px 7px;border-radius:var(--radius-pill);background:var(--surface-muted);border:1px solid var(--border-subtle);color:var(--muted)}.app-desc{margin:0;font-size:.8rem;color:var(--muted)}.app-header-actions{display:flex;align-items:center;gap:10px}.app-github-link{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;font-size:.8rem;font-weight:500;color:var(--text-secondary);text-decoration:none;background:var(--surface-muted);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);transition:all .15s ease}.app-github-link:hover{background:var(--surface-hover);border-color:var(--border);color:var(--text)}.tab-bar-container{background:var(--surface);border-bottom:1px solid var(--border);padding:6px 24px 0;overflow-x:auto;scrollbar-width:thin}.tab-bar{display:flex;align-items:stretch;gap:4px;min-width:max-content}.tab{display:inline-flex;align-items:center;gap:8px;padding:9px 15px;margin-bottom:-1px;border:1px solid transparent;border-bottom:2px solid transparent;border-radius:var(--radius-md) var(--radius-md) 0 0;background:transparent;color:var(--muted);font:inherit;font-size:.875rem;font-weight:500;white-space:nowrap;cursor:pointer;-webkit-user-select:none;user-select:none;transition:transform .06s ease,background-color .12s ease,color .12s ease,border-color .12s ease}.tab:hover{background:var(--surface-muted);color:var(--text)}.tab:active{transform:translateY(1px)}.tab--active{background:var(--surface);border-color:var(--border) var(--border) transparent var(--border);border-bottom:2px solid var(--accent);color:var(--accent-text);font-weight:600;box-shadow:0 -1px 3px #0f172a08}.tab-icon{font-size:.95rem;opacity:.85}.tab--active .tab-icon{opacity:1}.tab-badge{font-size:.68rem;font-weight:600;padding:1px 6px;border-radius:var(--radius-pill);background:var(--accent-soft);color:var(--accent-text);border:1px solid var(--accent-border)}.tool-banner{background:var(--surface);border-bottom:1px solid var(--border);padding:10px 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#2563eb33}.tool-btn--primary:hover:not(:disabled){background:var(--accent-hover);border-color:#1e40af;color:#fff}.tool-btn--primary:active:not(:disabled){transform:translateY(1px);filter:brightness(.92)}.tool-btn--sample{background:#f8fafc;border-color:#cbd5e1;color:var(--text);font-weight:600}.tool-btn--sample:hover:not(:disabled){background:#eff6ff;border-color:#93c5fd;color:var(--accent-text)}.tool-btn--sample:active:not(:disabled){transform:translateY(1px);filter:brightness(.97)}.tool-btn--danger{color:var(--red-dark)}.tool-btn--danger:hover:not(:disabled){background:var(--red-soft);border-color:var(--red-border);color:var(--red-dark)}.tool-input{min-width:0;background:var(--surface);transition:border-color .12s ease,box-shadow .12s ease}.tool-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1f}.tool-grow{flex:1;min-width:20px}.tool-segmented{display:inline-flex;background:var(--surface-muted);border:1px solid var(--border);border-radius:var(--radius-sm);padding:2px;gap:2px}.tool-segmented button{font:inherit;font-size:.8125rem;font-weight:500;padding:4px 10px;border:1px solid transparent;border-radius:var(--radius-xs);background:transparent;color:var(--muted);cursor:pointer;-webkit-user-select:none;user-select:none;white-space:nowrap;transition:transform .06s ease,background-color .12s ease,color .12s ease,box-shadow .06s ease}.tool-segmented button:hover:not([aria-pressed=true]){color:var(--text);background:#00000008}.tool-segmented button:active{transform:translateY(1px)}.tool-segmented button[aria-pressed=true]{background:var(--surface);color:var(--accent-text);font-weight:600;border-color:var(--border-subtle);box-shadow:var(--shadow-sm)}.tool-menu{position:relative;display:inline-block}.tool-menu-panel{position:absolute;top:calc(100% + 5px);left:0;z-index:50;min-width:240px;display:flex;flex-direction:column;padding:5px;background:var(--surface);border:1px solid 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270px);min-height:320px;margin:0;padding:14px;border:none;background:var(--surface);color:var(--text);font-family:var(--font-mono);font-size:13.5px;line-height:1.55;overflow:auto;-moz-tab-size:2;tab-size:2}textarea.tool-box{resize:vertical;outline:none}textarea.tool-box:focus{background:#fff}.tool-box--empty{color:var(--muted);font-family:inherit;white-space:normal}.tool-muted{color:var(--muted);font-size:.875rem}@media (max-width: 860px){.tool-panes{grid-template-columns:1fr}}