:root{
  --bg:#f5f6f8; --card:#fff; --ink:#1f2430; --muted:#6b7280;
  --brand:#4f46e5; --brand2:#7c3aed; --line:#e5e7eb; --ok:#16a34a; --warn:#d97706;
  --radius:14px; --shadow:0 1px 3px rgba(0,0,0,.08),0 8px 24px rgba(0,0,0,.05);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI","Sarabun",system-ui,sans-serif;background:var(--bg);color:var(--ink)}
/* ฉากช็อปปิ้งด้านล่าง — ตกแต่งหลังเนื้อหา ไม่บังการอ่าน
   เลเยอร์ร้าน (::after) นิ่งเสมอ, เลเยอร์คน (::before) เดินบน PC / นิ่งบนมือถือ-LINE */
body{background:linear-gradient(180deg,#f7f7fc 0%,#f2f0fa 100%) fixed}
body::after,body::before{
  content:"";position:fixed;left:0;right:0;bottom:0;height:260px;pointer-events:none;
  background-repeat:repeat-x;background-position:left bottom;background-size:auto 260px;
  -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 60%);
          mask-image:linear-gradient(180deg,transparent 0,#000 60%);
}
body::after{ z-index:-2;background-image:url("shopping-bg.svg");opacity:.45; }   /* ร้านค้า (นิ่ง) */
body::before{ z-index:-1;background-image:url("shoppers.svg");opacity:.5; }       /* คนเดินช็อปปิ้ง */

/* PC: ให้คนเดิน (เลื่อนทีละ 1 ไทล์ = 480px แล้ววนใหม่แบบเนียน) */
@media (min-width:1000px){
  body::before{ animation:shoppers-walk 24s linear infinite; }
}
@keyframes shoppers-walk{
  from{ background-position-x:0; }
  to  { background-position-x:480px; }
}
/* เคารพผู้ที่ตั้งค่าลดการเคลื่อนไหว */
@media (prefers-reduced-motion:reduce){
  body::before{ animation:none; }
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 20px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;flex-wrap:wrap}
.topbar a{color:#fff}
.brand{font-size:20px;font-weight:700;display:inline-flex;align-items:center;gap:9px}
.brand-logo{height:32px;width:auto;display:block;border-radius:6px;background:#fff;padding:2px}
.hero-banner{margin:0 0 18px}
.hero-banner img{width:100%;height:auto;display:block;border-radius:14px;box-shadow:0 4px 18px rgba(0,0,0,.08)}
.quota-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:#f5f3ff;border:1px solid #e5e7eb;
  border-radius:10px;padding:10px 16px;margin:10px 0}
.quota-bar .q-track{flex:1;min-width:160px;height:8px;background:#e5e7eb;border-radius:999px;overflow:hidden}
.quota-bar .q-fill{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}
.quota-bar.full .q-fill{background:#dc2626}
.quota-bar b{color:var(--brand)}
.ful-box,.area-box{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:14px 0}
.ful-box legend,.area-box legend{font-weight:600;padding:0 6px}
.ful-box label{display:block;margin:6px 0}
.area-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.area-group{border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fafafa}
.area-head{font-weight:600;color:var(--brand);margin-bottom:4px;font-size:14px}
.area-group label{display:block;font-weight:400;margin:2px 0;font-size:14px}
.area-head-chk{font-weight:600!important;color:var(--brand)}
.pill{display:inline-block;font-size:12px;padding:2px 9px;border-radius:999px;background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;margin:2px 3px 0 0}
.pill.ship{background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe}
.pill.area{background:#f5f3ff;color:#6d28d9;border-color:#ddd6fe}
.cat-emoji{display:inline-block;margin-right:4px}
.cat-emoji.sm{font-size:13px;width:1.3em;text-align:center}
.cat-main .cat-emoji{font-size:20px}
.topbar nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.btn-login{background:#fff;color:var(--brand)!important;padding:6px 14px;border-radius:999px;font-weight:600}
.container{max-width:1100px;margin:0 auto;padding:20px}
.flash{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;padding:10px 14px;border-radius:10px;margin-bottom:16px}

/* filter bar */
.filters{display:flex;gap:10px;flex-wrap:wrap;background:var(--card);padding:14px;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px}
.filters input,.filters select{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.filters .btn{background:var(--brand);color:#fff;border:0;padding:9px 18px;border-radius:8px;cursor:pointer}

/* grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .15s,box-shadow .15s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.12)}
/* แยกหน้าตาการ์ด: ขาย (เขียว) vs มองหา (น้ำเงิน) */
.card-offer{border-top:4px solid #16a34a}
.card-wanted{border-top:4px solid #2563eb;background:#f7faff}
.card-wanted .thumb{background-color:#e0ecff}
.card-offer .thumb{background-color:#e7f6ec}
.card .thumb{aspect-ratio:4/3;background:#eef0f4 center/cover no-repeat;display:flex;align-items:center;justify-content:center;color:#9ca3af;font-size:34px}
.card .body{padding:12px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .title{font-weight:600;line-height:1.3}
.card .price{color:var(--brand);font-weight:700}
.badge{display:inline-block;font-size:11px;padding:2px 8px;border-radius:999px;background:#eef2ff;color:var(--brand)}
.badge.wanted{background:#fef3c7;color:#92400e}
.badge.public{background:#fee2e2;color:#b91c1c}
.meta{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot-green{background:#16a34a}.dot-yellow{background:#eab308}.dot-orange{background:#f97316}.dot-gray{background:#9ca3af}

/* forms / detail */
.panel{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:20px}
.panel h1,.panel h2{margin-top:0}
label{display:block;font-weight:600;margin:14px 0 4px}
input[type=text],input[type=number],input[type=url],select,textarea{
  width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:15px;font-family:inherit}
textarea{min-height:90px;resize:vertical}
.btn{background:var(--brand);color:#fff;border:0;padding:11px 22px;border-radius:8px;cursor:pointer;font-size:15px}
.btn.sec{background:#e5e7eb;color:var(--ink)}
.btn.danger{background:#dc2626}
.hint{font-size:13px;color:var(--muted)}
.warn-box{background:#fffbeb;border:1px solid #fcd34d;color:#92400e;padding:12px 14px;border-radius:10px;margin:12px 0}
.gallery{display:flex;gap:10px;flex-wrap:wrap}
.gallery img{width:140px;height:105px;object-fit:cover;border-radius:10px}
.row{display:flex;gap:14px;flex-wrap:wrap}.row>*{flex:1;min-width:180px}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);font-size:14px}
/* social actions */
.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:14px 0}
.react-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;
  color:var(--ink);padding:7px 14px;border-radius:999px;font-size:14px;cursor:pointer;text-decoration:none}
.react-btn:hover{border-color:var(--brand);text-decoration:none}
.react-btn.on{border-color:#fecaca;background:#fef2f2}
.stat{font-size:14px;color:var(--muted)}
.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin:26px 0}
.nav-badge{background:#ef4444;color:#fff;border-radius:999px;font-size:11px;padding:0 6px;font-weight:700}
/* messaging */
.msg-layout{display:grid;grid-template-columns:300px 1fr;gap:16px;align-items:start}
.msg-item{display:block;padding:10px 12px;border-radius:10px;border:1px solid var(--line);margin-bottom:8px;color:var(--ink)}
.msg-item.on{border-color:var(--brand);background:#f5f3ff}
.msg-item:hover{text-decoration:none;border-color:var(--brand)}
.msg-box{display:flex;flex-direction:column;gap:8px;max-height:50vh;overflow-y:auto;padding:8px 0;margin:10px 0;border-top:1px solid var(--line)}
.bubble{max-width:75%;padding:8px 12px;border-radius:12px;background:#eef0f4;align-self:flex-start}
.bubble.mine{background:#ede9fe;align-self:flex-end}
@media(max-width:680px){.msg-layout{grid-template-columns:1fr}}

/* ===== motion / effects ===== */
.topbar{position:sticky;top:0;z-index:50}
.filters{position:sticky;top:60px;z-index:20}
#toTop{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border:0;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:20px;cursor:pointer;
  box-shadow:0 6px 18px rgba(79,70,229,.4);display:none;z-index:60}
#toTop:hover{transform:translateY(-2px)}

@media (prefers-reduced-motion: no-preference){
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1)}
  .reveal.in{opacity:1;transform:none}
  .card{transition:transform .2s ease,box-shadow .2s ease}
  .card:hover{transform:translateY(-6px) rotate(-.4deg)}
  .card .thumb{transition:transform .35s ease}
  .card:hover .thumb{transform:scale(1.05)}
  .react-btn.on{animation:pop .35s ease}
  @keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.28)}100%{transform:scale(1)}}
  .nav-badge{animation:pulse 1.8s ease-in-out infinite}
  @keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,.55)}50%{box-shadow:0 0 0 6px rgba(239,68,68,0)}}
  #toTop{transition:transform .15s}
}
/* categories */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.cat-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.cat-main{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:16px;margin-bottom:8px}
.cat-card ul{list-style:none;margin:0;padding:0}
.cat-card li{display:flex;justify-content:space-between;padding:4px 0;font-size:14px;border-top:1px solid var(--line)}
.cat-count{background:var(--brand);color:#fff;border-radius:999px;font-size:12px;padding:1px 9px;min-width:22px;text-align:center}
.cat-count.sm{background:#eef2ff;color:var(--brand)}
/* sub-items editor */
.item-block{border:1px solid var(--line);border-radius:10px;padding:14px;margin:12px 0;position:relative;background:#fafbff}
.item-block h3{margin:0 0 8px;font-size:15px}
.item-card{border:1px solid var(--line);border-radius:10px;padding:14px;margin:10px 0}
.item-card .price{font-size:18px}
/* image preview in editor */
.img-preview{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.img-preview .thumb-wrap{width:96px;height:72px;border-radius:8px;overflow:hidden;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;background:#f3f4f6}
.img-preview .thumb-wrap img{width:100%;height:100%;object-fit:cover}
.img-preview .thumb-wrap.bad{border-color:#fca5a5;background:#fef2f2}
.img-preview .x{color:#b91c1c;font-size:12px;text-align:center;padding:4px}
.foot{max-width:1100px;margin:30px auto;padding:20px;color:var(--muted);font-size:13px;text-align:center}