:root{--bg: #f4f5f7;--card: #ffffff;--text: #1f2430;--muted: #6b7280;--border: #e3e5e9;--primary: #2f6fed;--primary-dark: #2558c2;--green: #1f9d55;--green-bg: #e6f7ec;--red: #d1453b;--red-bg: #fdecea;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button{font-family:inherit;cursor:pointer}input{font-family:inherit}.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px;width:320px;display:flex;flex-direction:column;gap:12px;box-shadow:0 4px 20px #0000000d}.login-card h1{margin:0;font-size:20px}.subtitle{margin:0 0 12px;color:var(--muted);font-size:14px}.login-card label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.login-card input{padding:8px 10px;border-radius:8px;border:1px solid var(--border);font-size:14px}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{background:var(--card);border-bottom:1px solid var(--border);padding:14px 24px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:700;font-size:16px;color:var(--text);text-decoration:none}.nav-links{display:flex;gap:20px}.nav-links a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;padding:4px 0;border-bottom:2px solid transparent}.nav-links a.active{color:var(--text);border-bottom-color:var(--primary)}.topbar-right{display:flex;align-items:center;gap:12px}.username{color:var(--muted);font-size:14px}.content{flex:1;padding:24px;max-width:1100px;width:100%;margin:0 auto}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-header h1{margin:0;font-size:22px}.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-size:14px;font-weight:500}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{opacity:.6;cursor:default}.btn-ghost{background:transparent;border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:14px;color:var(--text)}.btn-danger-ghost{background:transparent;border:none;color:var(--red);font-size:13px;padding:4px 8px}.back-link{margin-bottom:16px}.stats-row{display:flex;gap:16px;margin-bottom:20px;flex-wrap:wrap}.period-picker{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.period-picker input,.period-picker select{padding:7px 10px;border-radius:8px;border:1px solid var(--border);font-size:14px}.payment-quick-form{display:flex;gap:8px;flex-wrap:wrap}.payment-quick-form input[type=number]{width:90px}.payment-quick-form input[type=text],.payment-quick-form input:not([type]){width:130px}.payment-quick-form input{padding:6px 8px;border-radius:6px;border:1px solid var(--border);font-size:13px}.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media (max-width: 800px){.dashboard-grid{grid-template-columns:1fr}}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 18px;flex:1;min-width:160px}.tax-type-field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);width:100%}.tax-type-field-label{font-size:13px;color:var(--muted)}.tax-type-options{display:flex;flex-wrap:wrap;gap:8px 16px}.tax-type-option{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text)}.tax-type-option input{width:auto}.tax-type-custom{display:flex;flex-direction:column;gap:4px;max-width:320px}.tax-type-custom input{padding:8px 10px;border-radius:8px;border:1px solid var(--border);font-size:14px}.stat-value{font-size:22px;font-weight:700}.stat-label{color:var(--muted);font-size:13px;margin-top:4px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:20px}.card h2{margin:0 0 12px;font-size:17px}.card-header{display:flex;align-items:center;justify-content:space-between}.hint{color:var(--muted);font-size:13px;margin-top:-6px;margin-bottom:14px}.form-inline{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;margin-bottom:16px}.form-grid{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.form-inline label,.form-grid label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.form-inline .grow{flex:1;min-width:200px}.form-inline input,.form-grid input{padding:8px 10px;border-radius:8px;border:1px solid var(--border);font-size:14px}.search-input{width:100%;padding:10px 14px;border-radius:8px;border:1px solid var(--border);font-size:14px;margin-bottom:16px}.table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:10px;overflow:hidden}.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:10px}.table-scroll .table{min-width:560px}.table th,.table td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border);font-size:14px}.table th{color:var(--muted);font-weight:500;font-size:13px}.table tr:last-child td{border-bottom:none}.row-link:hover{background:#fafbfc;cursor:pointer}.table a{color:var(--text);text-decoration:none;font-weight:500}.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600}.badge-green{background:var(--green-bg);color:var(--green)}.badge-red{background:var(--red-bg);color:var(--red)}.badge-orange{background:#fff2e0;color:#b3660c}.badge-gray{background:#eef0f3;color:var(--muted)}.quarter-picker{display:flex;gap:6px}.quarter-picker input{width:80px;padding:8px 10px;border-radius:8px;border:1px solid var(--border);font-size:14px}.quarter-picker select{padding:8px 10px;border-radius:8px;border:1px solid var(--border);font-size:14px}.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.list li{display:flex;align-items:center;gap:12px;padding:8px 12px;border:1px solid var(--border);border-radius:8px}.list-date{color:var(--muted);font-size:13px;min-width:90px}.grow{flex:1}.empty{color:var(--muted);font-size:14px}.error{color:var(--red);font-size:13px}@media (max-width: 700px){.topbar{padding:10px 14px;flex-wrap:wrap;gap:8px}.nav-links{order:3;width:100%;gap:14px;overflow-x:auto;-webkit-overflow-scrolling:touch}.nav-links a{flex:none;white-space:nowrap}.topbar-right{gap:8px}.username{display:none}.content{padding:14px}.page-header{flex-wrap:wrap;gap:10px}.page-header h1{font-size:19px}.stats-row{gap:10px}.stat-card{min-width:0;flex:1 1 calc(50% - 5px);padding:12px 14px}.form-inline,.form-grid{flex-direction:column;align-items:stretch}.form-inline label,.form-grid label,.form-inline input,.form-grid input,.form-inline select,.form-grid select{width:100%}.form-inline .grow,.form-grid .grow{min-width:0}.payment-quick-form{flex-direction:column;align-items:stretch;width:100%}.payment-quick-form input[type=number],.payment-quick-form input[type=text],.payment-quick-form input:not([type]){width:100%}.quarter-picker,.period-picker{flex-wrap:wrap}.table th,.table td{padding:8px 10px;font-size:13px}.list li{flex-wrap:wrap}.login-card{width:100%;max-width:320px;padding:24px}}@media (max-width: 420px){.stat-card{flex:1 1 100%}}