.signal-selection-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.85);z-index:2000;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.signal-selection-modal{background-color:var(--color-background-primary);border:1px solid var(--color-background-tertiary);border-radius:var(--border-radius-lg);width:90vw;max-width:900px;height:80vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.5)}.signal-selection-header{padding:var(--spacing-lg);border-bottom:1px solid var(--color-background-tertiary);background-color:var(--color-background-secondary);flex-shrink:0}.signal-selection-body{flex-grow:1;overflow-y:auto;padding:var(--spacing-lg)}.signal-selection-footer{padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--color-background-tertiary);background-color:var(--color-background-secondary);display:flex;justify-content:space-between;align-items:center;flex-shrink:0}.selection-counter{font-size:1.2rem;font-weight:500;color:var(--color-text-primary)}.btn-symbol{background-color:var(--color-background-tertiary);border:1px solid var(--color-background-tertiary-hover);color:var(--color-text-secondary);transition:all var(--transition-duration-fast) ease;text-align:left;padding:.5rem .75rem}.btn-symbol:hover{background-color:var(--color-background-tertiary-hover);color:var(--color-text-primary)}.btn-symbol.selected{background-color:var(--color-ci-blue);border-color:var(--color-ci-blue);color:#fff;font-weight:500}.btn-symbol:disabled{opacity:.5;cursor:not-allowed}