:root{--primary:#1976d2;--primary-dark:#1565c0;--primary-darker:#0d47a1;--primary-light:#e3f2fd;--primary-soft:#bbdefb;--accent:#ffc107;--bg:#f0f7fc;--card:#ffffff;--text:#0f2746;--muted:#5a7184;--border:#cfe2f3;--border-strong:#94c2e8;--error:#c62828;--error-bg:#fdecea;--ok:#2e7d32;--ok-bg:#e8f5e9;--radius:12px;--radius-sm:8px;--shadow-sm:0 1px 2px rgba(13,71,161,0.06);--shadow:0 2px 10px rgba(13,71,161,0.08)}*,:after,:before{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body,html{margin:0;padding:0;font-family:Sarabun,Noto Sans Thai,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--primary-dark);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit;color:inherit}img{max-width:100%;height:auto;display:block}.site-header{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:12px 16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-sm)}.site-header img{width:40px;height:40px;border-radius:50%;background:#fff;padding:2px;flex-shrink:0}.site-header .brand{font-weight:700;font-size:1rem;line-height:1.2}.site-header .brand-en{font-size:.72rem;opacity:.85;font-weight:400;letter-spacing:.02em}.container{width:100%;max-width:720px;margin:0 auto;padding:16px 14px 80px}.card{border:1px solid var(--border);padding:18px 16px;box-shadow:var(--shadow-sm)}.card,.qr-poster{background:var(--card);border-radius:var(--radius)}.qr-poster{margin:0 auto 16px;max-width:460px;overflow:hidden;box-shadow:var(--shadow)}.qr-poster img{display:block;width:100%}h1{font-size:1.25rem;margin:0 0 8px;color:var(--primary-darker);line-height:1.35}h1,h2{font-weight:700}h2{font-size:1.05rem;margin:18px 0 12px;color:var(--primary-dark)}.subtitle{color:var(--muted);font-size:.93rem;margin:0 0 14px}.field{display:block;margin-bottom:14px}.label{display:block;font-weight:600;margin-bottom:6px;font-size:.93rem;color:var(--primary-darker)}.required:after{content:" *";color:var(--error)}.required-mark{color:var(--error);font-weight:700;margin-right:2px}.input,.select,.textarea{width:100%;padding:12px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:#fff;outline:none;transition:border-color .15s,box-shadow .15s;min-height:44px}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,118,210,.15)}input[type=file].input{padding:8px 12px}.row{display:flex;gap:12px;flex-wrap:wrap}.row>*{flex:1 1 200px}.radio-group{display:flex;flex-direction:column;gap:8px}.radio-row{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);cursor:pointer;background:#fff;min-height:52px;transition:background .12s,border-color .12s}.radio-row input[type=radio]{margin:0;width:18px;height:18px;flex-shrink:0}.radio-row.active{border-color:var(--primary);background:var(--primary-light)}.radio-row>span{flex:1 1;display:flex;flex-wrap:wrap;align-items:center;gap:6px}.inline-input{width:80px;padding:6px 10px;border:1px solid var(--border-strong);border-radius:6px;text-align:right;font-weight:600}.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:.9rem;margin:18px 0;padding:12px;background:var(--primary-light);border-radius:var(--radius-sm);line-height:1.5}.checkbox-row input{margin-top:4px;width:18px;height:18px;flex-shrink:0;accent-color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border:none;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-weight:700;font-size:1rem;min-height:48px;transition:background .15s,transform .05s}.btn:hover:not(:disabled){background:var(--primary-dark)}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{background:#94a3b8;cursor:not-allowed}.btn-block{display:flex;width:100%}.btn-secondary{background:#fff;color:var(--primary-dark);border:1px solid var(--primary)}.btn-secondary:hover:not(:disabled){background:var(--primary-light)}.alert{padding:12px 14px;border-radius:var(--radius-sm);margin-bottom:14px;font-size:.93rem}.alert-error{background:var(--error-bg);color:var(--error);border:1px solid #f5c6c1}.alert-ok{background:var(--ok-bg);color:var(--ok);border:1px solid #c2e0c4}.footer{margin-top:28px;padding:16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);text-align:center;font-size:.88rem;color:var(--muted);line-height:1.7}.footer strong{color:var(--primary-darker)}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-sm)}.table{width:100%;min-width:720px;border-collapse:collapse;font-size:.9rem;background:#fff}.table td,.table th{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;white-space:nowrap}.table th{background:var(--primary-light);color:var(--primary-darker);font-weight:700;font-size:.85rem;position:sticky;top:0;z-index:1}.table td.wrap{white-space:normal;min-width:140px}.table tr:hover td{background:#f7fbfe}.total-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;background:linear-gradient(135deg,var(--primary-light),#fff);border:1px solid var(--primary-soft);border-radius:var(--radius-sm);font-weight:600;margin-bottom:14px;flex-wrap:wrap;color:var(--primary-darker)}.total-bar>:last-child{font-size:1.05rem}.filter-bar{display:grid;grid-template-columns:1fr;gap:12px;margin-bottom:14px;align-items:end}.filter-bar .field{margin-bottom:0}.filter-bar .btn{min-height:44px;padding:10px 16px;font-size:.95rem}.admin-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}.admin-header h1{margin:0;font-size:1.15rem;flex:1 1 auto}@media (min-width:600px){.container{padding:20px 18px 80px}.card{padding:24px}h1{font-size:1.4rem}h2{font-size:1.15rem}.filter-bar{grid-template-columns:1fr 1fr auto auto}.site-header{padding:14px 24px}.site-header img{width:48px;height:48px}.site-header .brand{font-size:1.1rem}}@media (min-width:1024px){.container{max-width:980px;padding:28px 24px 100px}.card{padding:32px}h1{font-size:1.6rem}}@media print{body{background:#fff}.no-print,.site-header{display:none!important}.container{max-width:100%;padding:0}.card{border:none;box-shadow:none;padding:0}.table{font-size:.78rem;min-width:0}.table td,.table th{white-space:normal}h1{font-size:1rem}.total-bar{background:#f0f0f0}}