/* ─ Billing 전용 스타일 ─ */

    /* 미납 요약 배너 */
    .bill-alert-banner{background:linear-gradient(135deg,#fef2f2,#fff5f5);border:1.5px solid #fecaca;border-radius:16px;padding:16px 18px;margin-bottom:14px;display:flex;align-items:center;gap:14px}
    .bill-alert-icon{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#ef4444,#dc2626);display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;flex-shrink:0}
    .bill-alert-body{min-width:0;flex:1}
    .bill-alert-title{font-size:12.5px;font-weight:700;color:#991b1b;margin-bottom:3px}
    .bill-alert-amt{font-size:22px;font-weight:800;color:#dc2626;letter-spacing:-0.5px;line-height:1.1}
    .bill-alert-sub{font-size:11px;color:#ef4444;margin-top:3px;opacity:.85}

    /* 요약 헤더 카드 */
    .bill-summary-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-bottom:14px}
    .bill-sum-card{background:#fff;border-radius:14px;padding:12px 8px;box-shadow:0 2px 10px rgba(0,0,0,.06);text-align:center}
    .bill-sum-card .bsc-label{font-size:10px;color:#9ca3af;font-weight:500;margin-bottom:4px}
    .bill-sum-card .bsc-val{font-size:17px;font-weight:800;letter-spacing:-0.3px;line-height:1.1}
    .bill-sum-card .bsc-sub{font-size:10px;margin-top:3px;font-weight:500}
    .bill-sum-card.b-total .bsc-val{color:#1a1a2e} .bill-sum-card.b-total .bsc-sub{color:#9ca3af}
    .bill-sum-card.b-paid  .bsc-val{color:#059669} .bill-sum-card.b-paid  .bsc-sub{color:#6ee7b7}
    .bill-sum-card.b-unpaid .bsc-val{color:#dc2626} .bill-sum-card.b-unpaid .bsc-sub{color:#fca5a5}

    /* 개별 청구 카드 */
    .bill-item{background:#fff;border-radius:16px;box-shadow:0 2px 12px rgba(0,0,0,.07);margin-bottom:10px;overflow:hidden;transition:box-shadow .15s}
    .bill-item:active{}
    .bill-item-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 10px;gap:10px}
    .bill-item-period{font-size:15px;font-weight:800;color:#1a1a2e;letter-spacing:-0.3px}
    .bill-item-date{font-size:11px;color:#9ca3af;margin-top:2px}
    .bill-status-badge{display:inline-flex;align-items:center;gap:4px;padding:5px 11px;border-radius:20px;font-size:12px;font-weight:700;white-space:nowrap;flex-shrink:0}
    .bill-status-badge.s-paid    {background:#d1fae5;color:#065f46}
    .bill-status-badge.s-partial {background:#fef9c3;color:#854d0e}
    .bill-status-badge.s-unpaid  {background:#fee2e2;color:#991b1b}
    .bill-status-badge.s-wait    {background:#f3f4f6;color:#6b7280}
    .bill-status-badge.s-loss    {background:#f5f3ff;color:#5b21b6}

    /* 청구 금액 영역 */
    .bill-amount-row{display:flex;align-items:center;justify-content:space-between;padding:0 16px 12px;gap:8px}
    .bill-amount-main{font-size:20px;font-weight:800;color:#1a1a2e;letter-spacing:-0.5px}
    .bill-amount-per{font-size:11px;color:#9ca3af;margin-top:2px}

    /* 납부 진행 바 */
    .bill-progress-wrap{padding:0 16px 14px}
    .bill-progress-bar{height:7px;border-radius:4px;background:#f3f4f6;overflow:hidden;margin-bottom:6px}
    .bill-progress-fill{height:100%;border-radius:4px;transition:width .4s ease}
    .bill-progress-labels{display:flex;justify-content:space-between;font-size:10.5px;font-weight:600}

    /* 상세 정보 그리드 */
    .bill-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid #f5f5f5}
    .bill-detail-item{padding:10px 16px;border-bottom:1px solid #f5f5f5}
    .bill-detail-item:nth-child(odd){border-right:1px solid #f5f5f5}
    .bill-detail-label{font-size:10.5px;color:#9ca3af;font-weight:500;margin-bottom:3px}
    .bill-detail-value{font-size:13px;font-weight:700;color:#1a1a2e}
    .bill-detail-value.green{color:#059669} .bill-detail-value.red{color:#dc2626} .bill-detail-value.orange{color:#d97706} .bill-detail-value.purple{color:#7c3aed}

    /* 손실 처리 배너 */
    .bill-loss-bar{background:#f5f3ff;padding:10px 16px;display:flex;align-items:center;gap:8px;font-size:11.5px;color:#5b21b6;font-weight:600;border-top:1px solid #ede9fe}

    /* 빈 상태 */
    .bill-empty{text-align:center;padding:64px 24px 80px}
    .bill-empty-icon{width:72px;height:72px;border-radius:20px;background:linear-gradient(135deg,#ede9fe,#f5f3ff);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:32px}
    .bill-empty-title{font-size:16px;font-weight:800;color:#1a1a2e;margin-bottom:8px}
    .bill-empty-desc{font-size:13px;color:#9ca3af;line-height:1.7}

    /* ─ 로그아웃 레이블 ─ */