:root{--bg: #131318;--panel: #1e1e25;--edge: #33333d;--txt: #e7e9ee;--dim: #8a8f99;--accent: #ffb454;--col-w: 210px;--side-w: 280px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--txt);font:14px/1.45 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.topbar{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--panel);border-bottom:1px solid var(--edge);flex-wrap:wrap}.topbar strong{color:var(--accent);font-size:16px}.topbar .grow{flex:1}.gh-link{display:inline-flex;align-items:center;color:var(--dim)}.gh-link:hover{color:var(--txt)}.topbar .sep{width:1px;height:22px;background:var(--edge)}.muted{color:var(--dim)}.filename{background:transparent;border:1px solid transparent;border-radius:6px;color:var(--dim);font:inherit;padding:4px 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button{flex:1}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:flex-start;justify-content:center;padding:36px 16px;z-index:50;overflow:auto}.modal{background:var(--panel);border:1px solid var(--edge);border-radius:12px;padding:16px 18px;width:660px;max-width:100%}.modal.confirm{width:420px}.modal.confirm .hint{color:var(--dim);font-size:13px}.confirm-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:14px}button.danger{border-color:#ef4444;color:#ef4444}button.danger:hover{background:#ef4444;color:#fff;border-color:#ef4444}.modal-head{display:flex;align-items:center;justify-content:space-between}.modal-head h2{margin:0;color:var(--accent);font-size:15px}.device-list{display:flex;flex-direction:column;gap:10px;margin-top:10px}fieldset.device{border:1px solid var(--edge);border-radius:8px;padding:6px 10px 10px}fieldset.device.off{opacity:.6}fieldset.device legend .chk{color:var(--txt);display:flex;align-items:center;gap:6px}.device-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:8px}.device-grid label,.device-csv label{flex-direction:column;align-items:stretch;gap:3px;color:var(--dim);font-size:12px}.device-grid label input,.device-grid label select,.device-csv label select{width:100%}.device-csv{display:flex;align-items:flex-end;gap:10px;margin-top:8px;flex-wrap:wrap}.device-csv .meta{margin:0 0 4px}.snp-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.snapshots h3{margin:0;font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--dim)}.bankbtn{padding:3px 8px;font-size:11px}.bank-grid{display:grid;grid-template-columns:repeat(5,30px);gap:6px;background:#1b1b1f;padding:10px;border-radius:10px}.pad.bank{color:var(--txt);font-size:11px}.pad.bank.filled{border-color:var(--accent)}.sidebar fieldset.groups{border:1px solid var(--edge);border-radius:8px;padding:6px 10px 10px}.sidebar fieldset.groups legend{color:var(--accent);font-size:11px}.sidebar fieldset.groups .all-groups{border-bottom:1px solid var(--edge);padding-bottom:8px;margin-bottom:8px}.sidebar fieldset.groups .chk{flex-direction:row;align-items:center;gap:6px;color:var(--txt);font-size:12px}.snp-grid{display:flex;flex-direction:column;gap:6px;background:#1b1b1f;padding:10px;border-radius:10px;width:100%;max-width:var(--col-w);margin-inline:auto}.snp-row{display:flex;gap:6px}.pad{flex:1 1 0;aspect-ratio:1;min-width:0;padding:0;border-radius:6px;border:1px solid #54545e;background:#26262c;cursor:pointer}.pad.empty{background:#26262c}.pad.sel{outline:2px solid #fff;outline-offset:1px}.pad:hover{border-color:var(--accent)}@media(max-width:1000px){.app{height:auto;min-height:100vh;overflow:visible}.workspace{flex-direction:column;align-items:stretch;overflow:visible;padding:12px;gap:12px}.stage{min-width:0;overflow:visible}.board{flex-direction:column;align-items:stretch;gap:14px}.left-col,.right-col{width:100%;flex:none}.snp-area{flex-direction:row;align-items:flex-start;gap:14px}.snp-gridwrap{flex:0 1 var(--col-w);min-width:0}.snp-controls{flex:1 1 0;max-width:var(--col-w);min-width:0;order:1}.snp-tabs,.snp-modes{flex-direction:column}.sidebar{width:100%;flex:1 1 auto;overflow:visible}.sidebar .tabs{position:static}.device-grid{grid-template-columns:1fr 1fr}}