:root{--green:#1FA45B;--green-dark:#158046;--green-light:#E8F6EE;--bg:#F4F6F5;--card:#FFFFFF;--ink:#1E2B24;--muted:#6B7A72;--line:#E3E8E5;--danger:#D64545;--warn:#E8A13D;--radius:14px;--shadow:0 2px 10px rgba(30,43,36,.07);--sp1:8px;--sp2:12px;--sp3:16px;--sp4:24px}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Thai",sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5}
h1{font-size:20px}h2{font-size:16px}
.muted{color:var(--muted);font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:10px;padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer;background:var(--green);color:#fff;font-family:inherit}
.btn:hover{background:var(--green-dark)}
.btn.ghost{background:var(--card);color:var(--ink);border:1px solid var(--line)}
.btn.danger{background:var(--danger)}
.btn.sm{padding:6px 10px;font-size:13px;border-radius:8px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:var(--sp3)}
input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green-light);border-color:var(--green)}
label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;color:var(--muted)}
.field{margin-bottom:var(--sp3)}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--green-light);color:var(--green-dark)}
.badge.warn{background:#FBF1DD;color:#9A6B1D}
.badge.danger{background:#FBE4E4;color:#A33030}
table{width:100%;border-collapse:collapse}
th{font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
td{padding:12px;border-bottom:1px solid var(--line)}
tbody tr:hover td{background:var(--green-light)}
.empty{padding:40px 16px;text-align:center;color:var(--muted)}
.app-wrap{max-width:720px;margin:0 auto;padding:var(--sp4) var(--sp3)}
.app-head{display:flex;align-items:center;gap:var(--sp2);margin-bottom:var(--sp3);flex-wrap:wrap}
.head-actions{margin-left:auto;display:flex;gap:var(--sp1)}
.search{max-width:200px}
.summary-row{display:flex;gap:var(--sp2);margin-bottom:var(--sp3);flex-wrap:wrap}
.kpi-sm{padding:8px 14px;display:flex;gap:8px;align-items:center}
.item-list{display:flex;flex-direction:column;gap:var(--sp2)}
.item-row{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:var(--sp2) var(--sp3);display:flex;align-items:center;gap:var(--sp2)}
.item-main{flex:1;min-width:0}
.item-title{font-weight:600}
.item-actions{display:flex;gap:6px}
.modal[hidden]{display:none}
.modal{position:fixed;inset:0;background:rgba(30,43,36,.45);display:flex;align-items:center;justify-content:center;padding:var(--sp3);z-index:100}
.modal-card{width:100%;max-width:420px}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp2)}
.modal-close{border:0;background:none;font-size:18px;cursor:pointer;color:var(--muted)}
@media(max-width:520px){.head-actions{width:100%}.search{max-width:none;flex:1}}

/* เพิ่มเติมสำหรับ Canvas และการ์ดโน้ต */
.canvas-tools{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.tools-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.color-btn{width:28px;height:28px;border-radius:50%;border:2px solid transparent;cursor:pointer;padding:0}
.color-btn.active{border-color:var(--ink);box-shadow:0 0 0 2px var(--green-light)}
#drawCanvas{width:100%;height:220px;border:1px solid var(--line);border-radius:10px;background:#fff;touch-action:none;cursor:crosshair}
.item-preview{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.item-meta{font-size:12px;color:var(--muted);margin-top:2px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.thumb{width:52px;height:52px;border-radius:10px;object-fit:cover;border:1px solid var(--line);background:#fff;flex-shrink:0}
.has-dot{width:8px;height:8px;border-radius:50%;background:var(--green);display:inline-block}
.loading{color:var(--muted);text-align:center;padding:24px 16px}