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6px);left:50%;transform:translate(-50%);background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--r-sm);padding:4px 8px;font-size:11px;color:var(--text-primary);white-space:nowrap;z-index:30;box-shadow:var(--shadow-overlay);pointer-events:none}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 0%,var(--bg-elevated) 50%,var(--bg-tertiary) 100%);background-size:200% 100%;animation:shimmer 1.4s linear infinite;border-radius:var(--r-sm)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.empty{padding:var(--sp-12) var(--sp-8);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--sp-3)}.empty-icon{width:56px;height:56px;border-radius:var(--r-lg);background:var(--bg-secondary);border:1px solid var(--border-default);display:grid;place-items:center;color:var(--text-tertiary)}.empty h3{margin:0;font-size:var(--fs-h3);font-weight:600}.empty p{margin:0;color:var(--text-secondary);max-width:44ch;font-size:var(--fs-body)}.toast-stack{position:fixed;bottom:var(--sp-6);right:var(--sp-6);display:flex;flex-direction:column;gap:var(--sp-2);z-index:100}.toast{display:flex;align-items:flex-start;gap:var(--sp-3);background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--r-md);padding:var(--sp-3) var(--sp-4);min-width:320px;box-shadow:var(--shadow-overlay)}.toast .icon{flex-shrink:0;margin-top:2px}.toast.success .icon{color:var(--success)}.toast.error .icon{color:var(--error)}.toast .body .title{font-size:13px;font-weight:500;color:var(--text-primary)}.toast .body .desc{font-size:12px;color:var(--text-secondary);margin-top:2px}.modal-backdrop{position:fixed;inset:0;background:var(--bg-overlay);display:grid;place-items:center;z-index:50;padding:var(--sp-6)}.modal{background:var(--bg-elevated);border:1px solid 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