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12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:.8rem;font-weight:600;font-family:JetBrains Mono,Fira Code,monospace;cursor:pointer;transition:all .2s}.quick-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.btn-add-quick{padding:3px}.unsupported-banner{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#92400e;padding:16px 24px;border-radius:12px;display:flex;align-items:center;gap:12px;margin-top:20px;font-weight:500}.unsupported-banner .material-icons-round{font-size:32px;color:#f59e0b}.unsupported-banner p{margin:4px 0 0;font-size:.85rem;opacity:.8}@media(max-width:768px){.serial-main{padding:20px 12px 120px}.toolbar-row{gap:10px}.toolbar-status{margin-left:0}.toolbar-divider{display:none}.main-workspace{flex-direction:column}.activity-bar{width:100%;flex-direction:row;border-right:none;border-bottom:1px solid var(--border);justify-content:center;z-index:10;padding:4px 0}.primary-sidebar{width:100%!important;max-width:none;border-right:none;max-height:300px}.sidebar-resize-handle{display:none}.views-container,.views-container.split-view{flex-direction:column}.views-container.split-view .terminal-panel{border-right:none;border-bottom:1px solid var(--border)}#terminal-container{min-height:300px}.send-row{flex-wrap:wrap}.send-input{min-width:100%}}