:root{--bg: #f7f5f0;--surface: #ffffff;--text: #1c1b19;--muted: #6b675f;--border: #e4e0d6;--accent: #2f6f62;--accent-contrast: #ffffff;--amber: #c97a2b;--amber-bg: #fbe9d6;--red: #b3432b;--red-bg: #f7ded7;--green-bg: #dcece6;--radius: 10px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}button,input,select{font-family:inherit;font-size:1rem}a{color:var(--accent)}.page{max-width:640px;margin:0 auto;padding:1.25rem}h1{font-size:1.5rem;margin:0 0 .25rem}.subtitle{color:var(--muted);margin:0 0 1rem}.topbar{display:flex;justify-content:space-between;align-items:center;padding:.85rem 1.25rem;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.brand{font-weight:700;font-size:1.1rem;color:var(--accent);text-decoration:none}.topbar-right{display:flex;align-items:center;gap:.75rem}.flat-badge{background:var(--accent);color:var(--accent-contrast);padding:.2rem .6rem;border-radius:999px;font-size:.8rem;font-weight:600}button{background:var(--accent);color:var(--accent-contrast);border:none;border-radius:var(--radius);padding:.7rem 1.1rem;cursor:pointer;font-weight:600;margin-top:.75rem}button:disabled{opacity:.6;cursor:not-allowed}button.secondary{background:var(--surface);color:var(--accent);border:1px solid var(--accent)}.link-button{background:none;color:var(--accent);padding:.3rem 0;margin-top:.25rem;font-weight:500}.button-link{background:var(--accent);color:var(--accent-contrast);padding:.55rem .9rem;border-radius:var(--radius);text-decoration:none;font-weight:600}label{display:block;margin-top:.9rem;margin-bottom:.3rem;font-weight:600;font-size:.9rem}input,select{width:100%;padding:.6rem .7rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text)}.checkbox-row{display:flex;align-items:center;gap:.5rem;font-weight:400;margin:.35rem 0}.checkbox-row input{width:auto}fieldset{border:1px solid var(--border);border-radius:var(--radius);margin-top:.9rem;padding:.75rem}legend{font-weight:600;padding:0 .4rem}.banner{padding:.7rem .9rem;border-radius:var(--radius);margin:.75rem 0;font-size:.92rem}.banner.small{padding:.4rem .6rem;font-size:.85rem}.banner-error{background:var(--red-bg);color:var(--red)}.banner-success{background:var(--green-bg);color:var(--accent)}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;width:100%;max-width:380px}.phone-input{display:flex;align-items:center;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.phone-input span{padding:0 .7rem;color:var(--muted);border-right:1px solid var(--border)}.phone-input input{border:none;flex:1}.dashboard-header{display:flex;justify-content:space-between;align-items:center}.summary-box,.defaulter-box,.split-preview{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.9rem 1rem;margin:1rem 0}.summary-box ul{list-style:none;margin:.5rem 0 0;padding:0}.summary-box li{display:flex;justify-content:space-between;padding:.3rem 0;border-bottom:1px solid var(--border)}.summary-box li:last-child{border-bottom:none}.tabs{display:flex;gap:.5rem;margin:1rem 0 .5rem}.tabs button{background:var(--surface);color:var(--muted);border:1px solid var(--border);margin-top:0}.tabs button.tab-active{background:var(--accent);color:var(--accent-contrast);border-color:var(--accent)}.empty-state{color:var(--muted);padding:1.5rem 0;text-align:center}.bill-list{display:flex;flex-direction:column;gap:.6rem}.bill-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.8rem 1rem;text-decoration:none;color:var(--text)}.bill-card-main{display:flex;justify-content:space-between;font-weight:600}.bill-card-category{color:var(--muted);font-weight:400;font-size:.85rem}.bill-card-meta{display:flex;gap:1rem;color:var(--muted);font-size:.85rem;margin-top:.3rem}.bill-detail-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.receipt-link{white-space:nowrap;font-weight:600}.defaulter-box ul{margin:.4rem 0 0;padding-left:1.1rem}.share-list{display:flex;flex-direction:column;gap:.6rem;margin-top:1rem}.share-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.8rem 1rem}.share-row-header{display:flex;justify-content:space-between;align-items:center}.share-flat{font-weight:600}.share-amount{color:var(--muted);margin-top:.15rem}.status-pill{font-size:.75rem;font-weight:600;padding:.15rem .55rem;border-radius:999px}.status-unpaid{background:var(--red-bg);color:var(--red)}.status-claimed{background:var(--amber-bg);color:var(--amber)}.status-confirmed{background:var(--green-bg);color:var(--accent)}.share-actions{margin-top:.6rem;display:flex;flex-direction:column;align-items:flex-start;gap:.5rem}.upi-link{font-weight:600}.upi-qr{width:140px;height:140px;border:1px solid var(--border);border-radius:6px}.file-upload{border:1px dashed var(--border);border-radius:var(--radius);padding:.5rem .8rem;cursor:pointer;font-size:.9rem;color:var(--accent)}.file-upload input{display:none}.proof-link{display:inline-block;margin-top:.5rem;font-size:.85rem}