/*:root {*/
/*    --primary: #2563eb; --primary-hover: #1d4ed8; --success: #10b981; --danger: #ef4444;*/
/*    --bg-main: #f9fafb; --surface: #ffffff; --text-dark: #111827; --text-muted: #6b7280; --border-color: #e5e7eb;*/
/*}*/
/*body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background-color: var(--bg-main); color: var(--text-dark); margin: 0; padding: 0 0 75px 0; }*/
/*.app-header { background: var(--surface); padding: 16px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }*/
/*.app-header h1 { font-size: 18px; margin: 0; }*/
/*.unit-badge { font-size: 13px; font-weight: 600; color: var(--primary); background: #eff6ff; padding: 4px 10px; border-radius: 20px; }*/
/*.app-feed { padding: 16px; max-width: 500px; margin: 0 auto; }*/
/*.card { background: var(--surface); border-radius: 16px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); margin-bottom: 16px; border: 1px solid #f3f4f6; }*/
/*.balance-widget { text-align: center; background: linear-gradient(135deg, #1e3a8a 0%, var(--primary) 100%); color: white; }*/
/*.balance-value { font-size: 32px; font-weight: 800; margin: 10px 0; }*/
/*.btn-pay { display: block; width: 100%; background: var(--success); color: white; border: none; padding: 14px; border-radius: 10px; font-size: 15px; font-weight: 700; text-decoration: none; text-align: center; cursor: pointer; box-sizing: border-box; }*/
/*.form-group { margin-bottom: 15px; }*/
/*.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 5px; }*/
/*.form-group select, .form-group textarea, .form-group input { width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; box-sizing: border-box; }*/
/*.quick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }*/
/*.grid-item { background: var(--surface); border: 1px solid #f3f4f6; padding: 16px; border-radius: 14px; text-align: center; text-decoration: none; color: var(--text-dark); font-weight: 600; }*/
/*.timeline-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid #f3f4f6; }*/
/*.amt-debit { color: var(--danger); font-weight: 700; } .amt-credit { color: var(--success); font-weight: 700; }*/
/*.bottom-nav { position: fixed; bottom: 0; left: 0; right: 0; background: var(--surface); border-top: 1px solid var(--border-color); display: flex; padding: 10px 0; }*/
/*.nav-link { text-align: center; text-decoration: none; color: var(--text-muted); flex: 1; font-size: 12px; }*/
/*.nav-link.active { color: var(--primary); font-weight: 600; }*/


:root {
    --primary: #2563eb; --primary-hover: #1d4ed8; --success: #10b981; --danger: #ef4444;
    --bg-main: #f0f7ff; --surface: #ffffff; --text-dark: #111827; --text-muted: #6b7280; --border-color: #dbeafe;
}
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background-color: var(--bg-main); color: var(--text-dark); margin: 0; padding: 0 0 75px 0; }
.app-header { background: var(--surface); padding: 16px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
.app-header h1 { font-size: 18px; margin: 0; font-weight: 800; }
.unit-badge { font-size: 13px; font-weight: 600; color: var(--primary); background: #eff6ff; padding: 4px 10px; border-radius: 20px; }
.app-feed { padding: 16px; max-width: 500px; margin: 0 auto; }
.card { background: var(--surface); border-radius: 16px; padding: 20px; box-shadow: 0 4px 6px rgba(30, 58, 138, 0.05); margin-bottom: 16px; border: 1px solid var(--border-color); }
.balance-widget { text-align: center; background: linear-gradient(135deg, #1e3a8a 0%, var(--primary) 100%); color: white; }
.balance-value { font-size: 32px; font-weight: 800; margin: 10px 0; }
.balance-badge-display { padding: 10px 20px; font-weight: bold; border-radius: 8px; font-size: 18px; }
.balance-arrears { background-color: #fee2e2 !important; color: #991b1b !important; border: 1px solid #fca5a5; }
.balance-settled { background-color: #d1fae5 !important; color: #065f46 !important; border: 1px solid #a7f3d0; }
.btn-pay { display: block; width: 100%; background: var(--success); color: white; border: none; padding: 14px; border-radius: 10px; font-size: 15px; font-weight: 700; text-decoration: none; text-align: center; cursor: pointer; box-sizing: border-box; }
.form-group { margin-bottom: 15px; text-align: left; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 5px; }
.form-group select, .form-group textarea, .form-group input { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; box-sizing: border-box; background: var(--surface); color: var(--text-dark); }
.quick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-item { background: var(--surface); border: 1px solid var(--border-color); padding: 16px; border-radius: 14px; text-align: center; text-decoration: none; color: var(--text-dark); font-weight: 600; }
.timeline-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid #f3f4f6; }
.amt-debit { color: var(--danger); font-weight: 700; } .amt-credit { color: var(--success); font-weight: 700; }
.bottom-nav { position: fixed; bottom: 0; left: 0; right: 0; background: var(--surface); border-top: 1px solid var(--border-color); display: flex; padding: 12px 0; z-index: 1000; }
.nav-link { text-align: center; text-decoration: none; color: var(--text-muted); flex: 1; font-size: 12px; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.alert { padding: 12px; border-radius: 8px; margin-bottom: 15px; display: none; font-size: 14px; font-weight: 500; text-align: left; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }