/* 独立画布组件；颜色来自主工作台语义变量。 */
.canvas-panel{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;color:var(--text,#eceef4);background:var(--bg,#111216)}
.canvas-panel [hidden]{display:none!important}
.canvas-panel button,.canvas-panel input,.canvas-panel select,.canvas-panel textarea{font:inherit;box-sizing:border-box}
.canvas-panel button{display:inline-flex;justify-content:center;align-items:center;gap:6px;min-height:36px;padding:8px 12px;border:1px solid var(--border,#323541);border-radius:8px;background:var(--surface,#191b22);color:var(--text,#eceef4);font-size:12px;line-height:1.3;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s}
.canvas-panel button:hover:not(:disabled){background:var(--surface-raised,#242631);border-color:var(--accent,#a78bfa)}
.canvas-panel button:disabled{cursor:not-allowed;opacity:.4}
.canvas-panel button[aria-pressed=true]{color:var(--accent,#a78bfa);background:color-mix(in srgb,var(--accent,#a78bfa) 12%,transparent);border-color:color-mix(in srgb,var(--accent,#a78bfa) 45%,transparent)}
.canvas-panel .cv-primary{background:var(--accent,#a78bfa);color:var(--accent-contrast,#171321);border-color:transparent;font-weight:600;min-height:43px}
.canvas-panel .cv-primary:hover:not(:disabled){background:var(--accent,#a78bfa);filter:brightness(1.07)}
.canvas-panel .cv-text-button{min-height:30px;padding:4px 7px;border-color:transparent;background:transparent;color:var(--accent,#a78bfa)}
.canvas-panel .cv-quiet{background:transparent;color:var(--text-muted,#9a9fac)}
.cv-head{display:flex;align-items:center;gap:18px;flex:0 0 auto;min-height:80px;padding:15px 22px;border-bottom:1px solid var(--border,#323541);background:var(--surface,#191b22)}
.cv-heading{min-width:120px;flex:1}.cv-kicker{display:block;color:var(--accent,#a78bfa);font-size:10px;font-weight:600;letter-spacing:.16em;margin-bottom:2px}
.cv-heading input{width:100%;max-width:280px;min-width:0;padding:3px 0;border:0;border-radius:4px;background:transparent;color:var(--text,#eceef4);font-size:19px;font-weight:600;text-overflow:ellipsis;outline:0}
.cv-heading input:focus{box-shadow:0 1px 0 var(--accent,#a78bfa)}
.cv-project-actions{display:flex;gap:7px;align-items:center;min-width:0}.cv-project-actions select{min-width:100px;max-width:180px;height:36px;padding:6px 26px 6px 10px;border:1px solid var(--border,#323541);border-radius:8px;background:var(--bg,#111216);color:var(--text,#eceef4);font-size:12px}
.cv-save{flex:0 0 auto;max-width:170px;font-size:11px;color:var(--text-muted,#9a9fac)}.cv-save.is-error{color:#e88b9c}
.cv-layout{flex:1;min-width:0;min-height:0;display:grid;grid-template-columns:272px minmax(0,1fr);position:relative}
.cv-settings{display:flex;flex-direction:column;gap:14px;min-width:0;min-height:0;padding:20px 18px;overflow-y:auto;overscroll-behavior:contain;border-right:1px solid var(--border,#323541);background:var(--surface,#191b22);scrollbar-width:thin;scrollbar-color:var(--border,#323541) transparent}
.cv-section-title{display:flex;align-items:center;justify-content:space-between;gap:6px}.cv-section-title h3{margin:0;font-size:14px;font-weight:600}.cv-section-title>span{font-size:11px;color:var(--text-muted,#9a9fac)}
.cv-settings>label,.cv-options>label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:500;color:var(--text-muted,#9a9fac);min-width:0}
.cv-settings select,.cv-settings textarea{width:100%;min-width:0;padding:10px;border:1px solid var(--border,#323541);border-radius:8px;background:var(--bg,#111216);color:var(--text,#eceef4);font-size:13px;line-height:1.5;outline:0}
.cv-settings select{height:40px}.cv-settings select[multiple]{height:auto;min-height:115px;padding:5px}.cv-settings select[multiple] option{padding:7px 8px;border-radius:4px;overflow:hidden;text-overflow:ellipsis}
.cv-settings textarea{min-height:132px;resize:vertical;font-weight:400}.cv-settings textarea::placeholder{color:var(--text-subtle,#9a9fac);opacity:1}.cv-settings select:focus,.cv-settings textarea:focus{border-color:var(--accent,#a78bfa);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent,#a78bfa) 10%,transparent)}
.cv-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.cv-options:has([hidden]){grid-template-columns:1fr}
.cv-settings>.cv-check{display:flex;flex-direction:row;align-items:center;gap:8px;color:var(--text,#eceef4);font-weight:400;font-size:12px}
.cv-check input{width:16px;height:16px;margin:0;accent-color:var(--accent,#a78bfa)}
.cv-subtle{margin:0;font-size:12px;line-height:1.7;color:var(--text-muted,#9a9fac)}
.cv-notice{margin:0;font-size:12px;line-height:1.7;color:var(--text-muted,#9a9fac);overflow-wrap:anywhere}.cv-notice:empty{display:none}.cv-notice.is-error{color:#e88b9c}
.cv-materials{display:flex;flex-direction:column;gap:10px;margin-top:8px;padding-top:18px;border-top:1px solid var(--border,#323541)}
.cv-material-actions{display:grid;grid-template-columns:1fr 1fr;gap:6px}.cv-material-actions button{min-height:34px;padding:7px;font-size:11px}
.cv-shortcuts,.cv-local-note{margin:0;color:var(--text-muted,#9a9fac);font-size:11px;line-height:1.8}.cv-local-note{padding-top:12px;border-top:1px solid var(--border,#323541)}
.cv-workarea{position:relative;min-width:0;min-height:0;overflow:hidden;background:var(--bg,#111216)}
.cv-stage{position:absolute;inset:0;overflow:hidden;touch-action:none;overscroll-behavior:none;background-image:radial-gradient(circle,var(--border,#323541) 1px,transparent 1px);background-size:24px 24px;outline:0}
.cv-stage.is-pan{cursor:grab}.cv-stage.is-pan:active{cursor:grabbing}.cv-stage:focus-visible{box-shadow:inset 0 0 0 2px color-mix(in srgb,var(--accent,#a78bfa) 40%,transparent)}
.cv-empty{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);width:min(340px,calc(100% - 56px));text-align:center;pointer-events:none;color:var(--text,#eceef4)}
.cv-empty-mark{display:grid;place-items:center;width:62px;height:62px;margin:0 auto 20px;border:1px solid var(--border,#323541);border-radius:18px;background:var(--surface,#191b22);font-size:28px;font-weight:300;color:var(--accent,#a78bfa)}
.cv-empty h3{margin:0;font-size:20px;font-weight:500;letter-spacing:-.02em}.cv-empty p{margin:12px 0 22px;font-size:13px;color:var(--text-muted,#9a9fac);line-height:1.8}.cv-empty button{pointer-events:auto}
.cv-dock{position:absolute;bottom:56px;left:50%;transform:translateX(-50%);z-index:3;display:flex;align-items:center;gap:3px;width:max-content;max-width:calc(100% - 30px);padding:6px;border:1px solid var(--border,#323541);border-radius:12px;background:var(--surface,#191b22);box-shadow:0 8px 28px #0002;overflow-x:auto;scrollbar-width:thin}
.cv-dock button{flex:0 0 auto;min-height:34px;padding:7px 9px;border-color:transparent;background:transparent;font-size:11px}.cv-dock i{flex:0 0 1px;height:20px;background:var(--border,#323541);margin:0 2px}.cv-dock .cv-accent{color:var(--accent,#a78bfa)}
.cv-zoom{position:absolute;right:16px;bottom:14px;z-index:3;display:flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--border,#323541);border-radius:9px;background:var(--surface,#191b22)}.cv-zoom button{min-height:28px;padding:5px 9px;border-color:transparent;background:transparent;font-size:11px}.cv-zoom [data-cv=zoom]{min-width:55px;font-variant-numeric:tabular-nums}
.cv-selection-note{position:absolute;left:16px;bottom:22px;max-width:calc(100% - 240px);color:var(--text-muted,#9a9fac);font-size:11px;pointer-events:none}
.canvas-panel .cv-settings-toggle{display:none;position:absolute;top:14px;left:14px;z-index:10;background:var(--surface,#191b22);box-shadow:0 4px 16px #0002}
.canvas-panel button:focus-visible,.canvas-panel select:focus-visible,.canvas-panel textarea:focus-visible,.canvas-panel input:focus-visible{outline:2px solid var(--accent,#a78bfa);outline-offset:3px}
html[data-theme=light] .cv-save.is-error,html[data-theme=light] .cv-notice.is-error{color:#b83b50}
@media(max-width:1250px){.cv-head{flex-wrap:wrap;gap:9px 16px;padding:13px 18px}.cv-save{margin-left:auto}.cv-layout{grid-template-columns:250px minmax(0,1fr)}.cv-settings{padding:17px 14px}.cv-project-actions select{max-width:145px}}
@media(max-width:900px){.cv-layout{grid-template-columns:minmax(0,1fr)}.cv-settings{position:absolute;left:0;top:0;bottom:0;z-index:8;width:min(310px,88%);padding-top:66px;transform:translateX(-105%);visibility:hidden;box-shadow:12px 0 32px #0003;transition:transform .18s,visibility .18s}.cv-settings-open .cv-settings{transform:translateX(0);visibility:visible}.canvas-panel .cv-settings-toggle{display:inline-flex;min-height:40px}.cv-heading input{max-width:240px}.cv-empty{top:43%}}
@media(max-width:560px){.cv-head{padding:12px 14px;gap:10px;min-height:108px}.cv-heading{min-width:140px}.cv-heading input{font-size:17px}.cv-kicker{font-size:9px}.cv-save{font-size:10px;max-width:120px}.cv-project-actions{order:3;width:100%;gap:6px}.cv-project-actions select{flex:1;max-width:none;min-width:90px;height:36px}.cv-project-actions button{padding:7px 10px;font-size:11px}.cv-dock{bottom:58px;max-width:calc(100% - 16px);padding:5px;gap:2px}.cv-dock button{min-height:42px;min-width:42px;padding:8px;font-size:12px}.cv-dock i{margin:0}.cv-selection-note{display:none}.cv-zoom{right:10px;bottom:10px}.cv-zoom button{min-height:34px;padding:6px 10px}.cv-empty h3{font-size:18px}.cv-empty p{font-size:12px}.cv-settings select,.cv-settings textarea{font-size:14px}.cv-material-actions button{min-height:40px}.cv-settings .cv-primary{min-height:46px}}
@media(prefers-reduced-motion:reduce){.canvas-panel *, .canvas-panel *::before,.canvas-panel *::after{transition:none!important;animation:none!important}}