:root{--ah-blue: #00a0e2;--colin: #2e7d32;--teddy: #c62828;--muted: #757575;--bg: #fafafa;--card: #ffffff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:#212121;padding-bottom:env(safe-area-inset-bottom)}main{max-width:480px;margin:0 auto;padding:12px}h1{font-size:1.3rem;color:var(--ah-blue)}.banner{background:#fff3cd;border:1px solid #ffe08a;color:#664d03;padding:8px 12px;border-radius:8px;margin-bottom:12px;font-size:.9rem}.receipt{background:var(--card);border-radius:12px;padding:12px;margin-bottom:12px;box-shadow:0 1px 3px #0000001a}.receipt-head{display:flex;justify-content:space-between;font-weight:600}.receipt.confirmed{opacity:.75}.item-row{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid #eee;font-size:.95rem}.item-name{flex:1}.item-price{color:var(--muted);min-width:56px;text-align:right}.promo{background:#ff6f00;color:#fff;border-radius:4px;padding:0 4px;font-size:.75rem}.owner-btns{display:flex;gap:4px}.owner-btn{border:1px solid #ccc;background:#fff;border-radius:16px;padding:4px 10px;font-size:.85rem;cursor:pointer}.owner-btn.active-colin{background:var(--colin);color:#fff;border-color:var(--colin)}.owner-btn.active-teddy{background:var(--teddy);color:#fff;border-color:var(--teddy)}.owner-btn.suggested{border-style:dashed}.confirm-btn{width:100%;margin-top:10px;padding:10px;border:none;border-radius:8px;background:var(--ah-blue);color:#fff;font-weight:600;cursor:pointer}.balance{margin-top:8px;font-size:.9rem}.week-summary{background:var(--card);border-radius:12px;padding:12px;margin-bottom:12px;box-shadow:0 1px 3px #0000001a}.week-row{display:flex;justify-content:space-between;padding:4px 0;font-size:.9rem}