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var(--spacing-md);border-radius:var(--radius-md);min-height:36px;color:var(--color-text-secondary);font-size:var(--font-size-sm);background:0 0;font-weight:500;display:inline-flex}.btn-ghost:hover{background:var(--color-surface-hover,var(--color-bg-surface))}.btn-danger{align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);background:var(--color-error);color:#fff;min-height:36px;font-size:var(--font-size-sm);font-weight:600;display:inline-flex}.btn-danger:hover{opacity:.9}.btn-sm{padding:var(--spacing-xs) var(--spacing-sm);min-height:28px;font-size:var(--font-size-xs)}.btn-lg{padding:var(--spacing-md) var(--spacing-lg);min-height:44px;font-size:var(--font-size-base)}.btn-loading-spinner{border:2px solid;border-top-color:#0000;border-radius:50%;flex-shrink:0;width:14px;height:14px;animation:.6s linear infinite spin;display:inline-block}.btn-loading-spinner--sm{width:12px;height:12px}@keyframes 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0}.history-panel{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);margin-top:var(--spacing-md)}.history-panel-header{cursor:pointer;padding-bottom:var(--spacing-sm);justify-content:space-between;align-items:center;display:flex}.history-panel-title{color:var(--color-text-primary);font-size:.875rem;font-weight:600}.history-panel-count{color:var(--color-text-secondary);font-size:.75rem}.history-list{gap:var(--spacing-xs);flex-direction:column;max-height:300px;display:flex;overflow-y:auto}.history-item{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-surface);border-radius:var(--radius-sm);transition:border-color var(--transition-fast);border:1px solid 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