:root{--brand: #e11d2a;--join: #e11d2a;--join-bg:#fde8e8;--priv: #334155;--priv-bg:#eef2f6;--ink: #1f2937;--muted: #6b7280;--line: #e5e7eb;--bg: #faf7f7;--ok: #16a34a;--sidebar-w: 260px}*{box-sizing:border-box}body{margin:0;font-family:Sarabun,Prompt,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:14px}.app{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);background:#fff;border-right:1px solid var(--line);padding:16px 0;position:sticky;top:0;height:100vh;overflow-y:auto;flex-shrink:0}.brand{display:flex;align-items:center;gap:10px;padding:0 20px 16px;cursor:pointer}.brand .bt-logo{width:40px;height:auto}.brand b{font-size:16px}.nav-group{padding:8px 12px}.nav-head{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:8px 8px 4px;color:var(--muted)}.nav-head.join{color:var(--join)}.nav-head.priv{color:var(--priv)}.nav-item{display:block;padding:9px 12px;border-radius:8px;cursor:pointer;color:var(--ink);text-decoration:none;border:1px solid transparent}.nav-item:hover{background:var(--bg)}.nav-item.active{background:var(--bg);font-weight:600}.nav-item.active.join{background:var(--join-bg);border-color:var(--join);color:var(--join);font-weight:600}.nav-item.active.priv{background:var(--priv-bg);border-color:var(--priv);color:var(--priv);font-weight:600}.sidebar-footer{position:absolute;bottom:0;left:0;right:0;padding:12px 16px;border-top:1px solid var(--line);background:#fff;display:flex;align-items:center;gap:10px}.sidebar-footer img{width:28px;height:28px;border-radius:50%}.sidebar-footer .sf-name{font-size:13px;font-weight:600;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-footer button{background:none;border:none;color:var(--muted);cursor:pointer;font-size:12px;padding:4px 6px;border-radius:6px}.sidebar-footer button:hover{background:var(--bg)}.content{flex:1;padding:28px 36px;max-width:1000px;margin:0 auto}.page-title{font-size:22px;font-weight:700;margin:0 0 4px}.page-sub{color:var(--muted);margin:0 0 24px}.badge{display:inline-block;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px}.badge.join{background:var(--join-bg);color:var(--join)}.badge.priv{background:var(--priv-bg);color:var(--priv)}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin-bottom:18px}.card h3{margin:0 0 14px;font-size:15px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:5px}.field.full{grid-column:1 / -1}label{font-size:13px;color:var(--muted);font-weight:600}input,select,textarea{padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;background:#fff;width:100%}input:focus,select:focus,textarea:focus{outline:2px solid var(--join);border-color:var(--join)}textarea{resize:vertical;min-height:60px}table.items{width:100%;border-collapse:collapse}table.items th,table.items td{padding:8px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}table.items th{color:var(--muted);font-weight:600}.btn{padding:9px 16px;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}.btn-add{background:var(--join-bg);color:var(--join)}.btn-primary{background:var(--join);color:#fff}.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}.btn-del{background:transparent;color:#ef4444;padding:4px 8px}.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:8px}.hint{font-size:12px;color:var(--muted);margin-top:4px}.total-box{background:var(--join-bg);border-radius:8px;padding:14px 16px}.total-row{display:flex;justify-content:space-between;padding:3px 0}.total-row.grand{font-size:17px;font-weight:700;border-top:1px solid var(--join);margin-top:6px;padding-top:8px}.spinner{display:inline-block;width:16px;height:16px;border:2px solid #fff;border-top-color:transparent;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-3px}.spinner-dark{border-color:var(--ink);border-top-color:transparent}@keyframes spin{to{transform:rotate(360deg)}}label .req{color:#dc2626;margin-left:2px;font-weight:700}input.invalid,select.invalid{border-color:#dc2626;outline:2px solid #fecaca}.ac-wrap{position:relative}.ac-list{position:absolute;top:100%;left:0;right:0;z-index:30;background:#fff;border:1px solid var(--line);border-radius:8px;margin-top:4px;max-height:240px;overflow-y:auto;box-shadow:0 8px 24px #0000001a}.ac-item{padding:9px 12px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:8px}.ac-item small{color:var(--muted);font-size:12px}.ac-item.on,.ac-item:hover{background:var(--join-bg)}.ac-item.ac-new{color:var(--join);font-weight:600;border-top:1px solid var(--line)}input:disabled{background:#f3f4f6;color:#9ca3af;cursor:not-allowed}.chip{display:inline-flex;align-items:center;gap:10px;background:var(--join-bg);color:var(--join);padding:8px 12px;border-radius:8px;font-weight:600}.chip button{background:none;border:none;color:var(--join);cursor:pointer;font-size:16px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1118278c;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;animation:fade .15s ease}@keyframes fade{0%{opacity:0}to{opacity:1}}.modal{background:#fff;border-radius:16px;max-width:440px;width:100%;padding:28px 28px 22px;text-align:center;box-shadow:0 24px 60px #00000040;animation:pop .18s ease}@keyframes pop{0%{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}.modal-icon{font-size:46px;line-height:1;margin-bottom:10px}.modal.ok .modal-icon{color:var(--ok)}.modal.err .modal-icon{color:#dc2626}.modal-title{font-size:19px;font-weight:700;margin-bottom:8px}.modal-body{font-size:15px;color:var(--ink);line-height:1.6;margin-bottom:22px;word-break:break-word}.modal-body a{color:var(--join);font-weight:600}.modal-actions{display:flex;gap:10px;justify-content:center}.modal-actions .btn{min-width:120px;padding:11px 20px;font-size:15px}.toast-wrap{position:fixed;right:24px;bottom:24px;z-index:200}.toast{background:var(--ink);color:#fff;padding:14px 18px;border-radius:10px;opacity:0;transform:translateY(10px);transition:.25s;max-width:360px}.toast.show{opacity:1;transform:translateY(0)}.toast.ok{background:var(--ok)}.toast.err{background:#dc2626}.home{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;height:100%;gap:6px}.home .bt-logo{width:140px;height:auto;margin-bottom:14px}.home h1{font-size:34px;font-weight:700;margin:0;letter-spacing:.01em}.home-tag{font-size:18px;color:var(--join);font-weight:600;margin:0}.home-sub{font-size:14px;color:var(--muted);margin:10px 0 0}.h-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.h-table th,.h-table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:13px;vertical-align:top}.h-table th{background:var(--bg);color:var(--muted);font-weight:700;white-space:nowrap}.h-table tr:last-child td{border-bottom:none}.h-table td.r{text-align:right;white-space:nowrap}.h-pono{font-weight:700}.h-sub{color:var(--muted);font-size:12px}.st{display:inline-block;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;white-space:nowrap}.st.Pending{background:#fef3c7;color:#92400e}.st.Receive{background:#dbeafe;color:#1e40af}.st.Complete{background:#dcfce7;color:#166534}.st.Cancel{background:#fee2e2;color:#991b1b}.h-acts{display:flex;flex-direction:column;gap:6px;align-items:flex-end}.h-acts .btn{padding:6px 10px;font-size:12.5px;white-space:nowrap}.h-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}.h-links a{font-size:12px;color:var(--join);font-weight:600}.h-empty{padding:40px;text-align:center;color:var(--muted);border:2px dashed var(--line);border-radius:12px}.h-pagination{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:12px}.h-page-size{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.h-page-size select{width:auto;padding:6px 10px;font-size:13px}.h-page-nav{display:flex;align-items:center;gap:6px}.h-page-nav .btn{padding:6px 12px;font-size:13px}.h-page-nav .btn:disabled{opacity:.45;cursor:not-allowed}.h-page-label{font-size:13px;color:var(--muted);padding:0 4px;white-space:nowrap}.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}.login-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:40px 36px;text-align:center;max-width:360px;width:100%;box-shadow:0 8px 32px #00000014}.login-card img{width:80px;margin-bottom:16px}.login-card h1{font-size:22px;font-weight:700;margin:0 0 4px}.login-card p{color:var(--muted);margin:0 0 28px}.btn-google{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:12px 20px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit}.btn-google:hover{background:var(--bg)}.btn-google svg{width:20px;height:20px;flex-shrink:0}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--muted);font-size:16px}.inv-form{display:flex;flex-direction:column;gap:12px;margin-bottom:20px;text-align:left}