:root{--color-bg:#f4f6f5;--color-surface:#fff;--color-text:#1a1f1c;--color-muted:#6b7570;--color-border:#e2e6e3;--color-primary:#1f7a4d;--color-primary-dark:#15572f;--color-danger:#b3261e;--color-receivable:#1f7a4d;--color-payable:#b3261e;--radius:14px;--font:-apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font);-webkit-tap-highlight-color:transparent;font-size:17px}#root{flex-direction:column;min-height:100vh;display:flex}button,input,select{font-family:inherit;font-size:inherit}a{color:inherit;text-decoration:none}.app-header{background:var(--color-primary);color:#fff;z-index:10;align-items:center;gap:12px;padding:16px 20px;display:flex;position:sticky;top:0}.app-header h1{margin:0;font-size:19px;font-weight:600}.app-header .back-btn{color:#fff;cursor:pointer;background:#ffffff26;border:none;border-radius:10px;padding:8px 12px;font-size:18px}.app-header h1{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.visibility-btn{color:#fff;cursor:pointer;white-space:nowrap;background:#ffffff26;border:1px solid #ffffff59;border-radius:10px;padding:8px 12px;font-size:14px;font-weight:600}.page{flex:1;width:100%;max-width:640px;margin:0 auto;padding:16px 16px 32px}.card{background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border);margin-bottom:14px;padding:16px}.totals-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px;display:grid}.total-tile{background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border);padding:16px}.total-tile .label{color:var(--color-muted);margin-bottom:6px;font-size:13px}.total-tile .value{font-size:22px;font-weight:700}.total-tile.receivable .value{color:var(--color-receivable)}.total-tile.payable .value{color:var(--color-payable)}.big-nav-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px;display:grid}.big-nav-btn{background:var(--color-primary);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;flex-direction:column;justify-content:center;align-items:center;gap:8px;min-height:92px;padding:24px 12px;font-size:18px;font-weight:600;display:flex}.big-nav-btn.secondary{background:var(--color-text)}.big-nav-btn .icon{font-size:28px}.search-bar{border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-surface);width:100%;margin-bottom:16px;padding:14px 16px}.section-title{color:var(--color-muted);text-transform:uppercase;letter-spacing:.04em;margin:18px 0 8px;font-size:14px}.person-row{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);cursor:pointer;justify-content:space-between;align-items:center;margin-bottom:10px;padding:16px;display:flex}.person-row .name{font-size:17px;font-weight:600}.person-row .sub{color:var(--color-muted);margin-top:2px;font-size:13px}.person-row .balance{font-size:16px;font-weight:700}.fab{background:var(--color-primary);color:#fff;cursor:pointer;z-index:20;border:none;border-radius:50%;width:60px;height:60px;font-size:30px;position:fixed;bottom:24px;right:24px;box-shadow:0 4px 14px #00000040}.balance-hero{text-align:center;padding:20px 0 10px}.balance-hero .label{color:var(--color-muted);font-size:14px}.balance-hero .amount{margin-top:4px;font-size:38px;font-weight:800}.action-row{grid-template-columns:1fr 1fr;gap:12px;margin:16px 0;display:grid}.action-btn{border-radius:var(--radius);cursor:pointer;color:#fff;border:none;padding:18px 10px;font-size:17px;font-weight:700}.action-btn.bill{background:var(--color-primary)}.action-btn.payment{background:#2563a8}.txn-item{border-bottom:1px solid var(--color-border);justify-content:space-between;padding:12px 0;display:flex}.txn-item:last-child{border-bottom:none}.txn-item .type-label{font-weight:600}.txn-item .meta{color:var(--color-muted);margin-top:2px;font-size:13px}.txn-item .amount.positive{color:var(--color-receivable);font-weight:700}.txn-item .amount.negative{color:var(--color-payable);font-weight:700}.form-field{margin-bottom:16px}.form-field label{color:var(--color-muted);margin-bottom:6px;font-size:14px;display:block}.form-field input,.form-field textarea,.form-field select{border:1px solid var(--color-border);background:var(--color-surface);border-radius:12px;width:100%;padding:14px}.primary-btn{border-radius:var(--radius);background:var(--color-primary);color:#fff;cursor:pointer;border:none;width:100%;padding:16px;font-size:17px;font-weight:700}.primary-btn:disabled{opacity:.5;cursor:not-allowed}.secondary-btn{border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-surface);width:100%;color:var(--color-text);cursor:pointer;padding:16px;font-size:16px;font-weight:600}.empty-state{text-align:center;color:var(--color-muted);padding:40px 16px}.keypad-display{text-align:center;padding:24px 0;font-size:44px;font-weight:800}.amount-input{text-align:center;width:100%;color:var(--color-text);background:0 0;border:none;padding:20px 0;font-size:44px;font-weight:800;display:block}.amount-input:focus{outline:none}.amount-prefix{text-align:center;color:var(--color-muted);font-size:15px}.method-grid{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px;display:grid}.method-btn{border:2px solid var(--color-border);background:var(--color-surface);cursor:pointer;border-radius:12px;padding:14px;font-weight:600}.method-btn.selected{border-color:var(--color-primary);background:#eaf5ee}.offline-banner{color:#fff;text-align:center;background:#3b3b3b;padding:8px 16px;font-size:14px}.scan-note{color:var(--color-muted);margin:0 0 12px;font-size:13px}.hint{color:var(--color-muted);margin:-4px 0 8px;font-size:13px}.lock-screen{background:var(--color-bg);min-height:100vh}.code-input{letter-spacing:.4em;padding-left:.4em}.sync-bar{text-align:center;width:100%;color:var(--color-muted);cursor:pointer;background:0 0;border:none;padding:0 0 12px;font-size:13px;display:block}.sync-bar.warn{color:#9a5b00;font-weight:600}.error-text{color:var(--color-danger);font-size:14px}.danger-link{color:var(--color-danger);cursor:pointer;background:0 0;border:none;margin:24px auto 0;padding:12px;font-size:15px;font-weight:600;display:block}.warning-card{background:#fff8e6;border-color:#f0d48a}.link-btn{color:var(--color-primary);cursor:pointer;background:0 0;border:none;padding:10px 0;font-size:15px;font-weight:600}