:root{--bg:#f6f7f9;--panel:#fff;--ink:#17212b;--muted:#64748b;--line:#dbe3ea;--accent:#0f766e;--accent-2:#2563eb;--danger:#b42318;--warning:#a16207;--shadow:0 14px 38px #0f172a14}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.6}label{color:var(--muted);gap:6px;font-size:13px;font-weight:650;display:grid}input,select,textarea{border:1px solid var(--line);width:100%;min-height:40px;color:var(--ink);background:#fff;border-radius:8px;padding:9px 11px}textarea{resize:vertical;min-height:120px;line-height:1.5}.login-screen,.loading-screen{place-items:center;min-height:100svh;padding:24px;display:grid}.login-panel{border:1px solid var(--line);background:var(--panel);width:min(420px,100%);box-shadow:var(--shadow);border-radius:8px;gap:18px;padding:22px;display:grid}.brand-row{align-items:center;gap:10px;display:flex}h1,h2,p{margin:0}h1{font-size:20px}h2{font-size:16px}.app-shell{max-width:980px;min-height:100svh;margin:0 auto;padding:14px 14px 88px}.topbar{justify-content:space-between;align-items:center;gap:12px;padding:8px 0 12px;display:flex}.topbar select{width:min(240px,45%)}.eyebrow{color:var(--muted);margin-bottom:4px;font-size:12px;font-weight:700}.metrics-strip{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px;display:grid}.metrics-strip div{border:1px solid var(--line);background:var(--panel);border-radius:8px;min-width:0;padding:12px}.metrics-strip span,.row-meta,.hint,.empty{color:var(--muted);font-size:12px}.metrics-strip strong{margin-top:4px;font-size:18px;display:block}.banner{color:#0f4d45;background:#e8f5f1;border:1px solid #9cc7bd;border-radius:8px;margin:10px 0;padding:10px 12px;font-size:13px}.banner.error,.error-text{color:var(--danger);background:#fff0ee;border-color:#f0b8b0}.content{gap:12px;display:grid}.pane{gap:14px;display:grid}.chat-box,.draft-card,.expense-row,.settings-pane,.table-list,.transfer-list{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:12px}.chat-box{gap:10px;display:grid}.chat-actions,.section-title,.row-side,.transfer-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.chat-actions input{max-width:170px}.primary-button,.icon-button,.segmented button,.bottom-tabs button{border:0;border-radius:8px;justify-content:center;align-items:center;gap:7px;min-height:40px;display:inline-flex}.primary-button{background:var(--accent);color:#fff;padding:0 14px;font-weight:760}.icon-button{width:38px;color:var(--ink);background:#eef2f7}.draft-stack,.draft-card{gap:12px;display:grid}.draft-grid,.family-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.segmented-group{gap:6px;display:grid}.control-label{color:var(--muted);font-size:13px;font-weight:760}.segmented{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;display:grid}.expense-type-segmented{grid-template-columns:repeat(6,minmax(0,1fr))}.scope-segmented{grid-template-columns:repeat(3,minmax(0,1fr))}.segmented button{border:1px solid var(--line);color:var(--muted);background:#f8fafc;min-width:0;font-size:12px}.segmented button.selected{border-color:var(--accent);color:var(--accent);background:#ddf3ee;font-weight:780}.share-list{gap:6px;display:grid}.share-row{grid-template-columns:minmax(0,1fr) 82px;align-items:center;gap:8px;display:grid}.checkbox-label{min-width:0;color:var(--ink);align-items:center;gap:8px;display:flex}.checkbox-label input{width:18px;min-height:18px}.weight-input{text-align:center}.ledger-list{gap:8px}.expense-row{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;display:grid}.row-title{margin-bottom:4px;font-weight:780}.row-side{flex-direction:column;align-items:flex-end}.delete-confirm-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.danger-button,.ghost-button{border:0;border-radius:8px;min-height:38px;padding:0 12px;font-size:13px;font-weight:780}.danger-button{color:#991b1b;background:#fee2e2}.ghost-button{color:var(--muted);background:#eef2f7}.table-list,.transfer-list{gap:8px;display:grid}.table-list.compact{font-size:13px}.settlement-line{grid-template-columns:minmax(0,1fr) auto auto auto;align-items:center;gap:8px;min-height:34px;display:grid}.settlement-line span{color:var(--muted);font-size:12px}.settlement-line em{font-style:normal;font-weight:800}.positive{color:var(--accent)}.negative{color:var(--warning)}.transfer-row{flex-wrap:wrap;justify-content:center}.transfer-direction{color:var(--muted);font-size:13px;font-weight:760}.transfer-row strong{color:var(--accent-2);background:#e6f0ff;border-radius:999px;padding:6px 10px}.settings-pane{gap:12px}.participant-editor{gap:8px;display:grid}.participant-row{grid-template-columns:minmax(160px,1.6fr) minmax(90px,.8fr) 90px 80px 150px;align-items:center;gap:8px;display:grid}.bottom-tabs{z-index:10;border-top:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff5;grid-template-columns:repeat(4,1fr);width:min(980px,100%);display:grid;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.bottom-tabs button{color:var(--muted);background:0 0;border-radius:0;flex-direction:column;min-height:64px;font-size:12px}.bottom-tabs button.active{color:var(--accent);font-weight:780}@media (max-width:720px){.app-shell{padding:12px 10px 82px}.topbar{flex-direction:column;align-items:stretch}.topbar select{width:100%}.draft-grid,.family-grid,.metrics-strip{grid-template-columns:1fr}.segmented,.expense-type-segmented,.scope-segmented{grid-template-columns:repeat(3,minmax(0,1fr))}.settlement-line{grid-template-columns:1fr;align-items:start}.participant-row{grid-template-columns:1fr 1fr}.chat-actions{flex-direction:column;align-items:stretch}.chat-actions input{max-width:none}}