:root{
  --red:#D4302F; --red-dark:#B0201F; --teal:#11AFCA; --teal-dark:#0B8EA5;
  --bg:#FAF7F5; --card:#FFFFFF; --ink:#1F1F1F; --muted:#6B6B6B; --line:#E9E2DF;
  --ok:#1E9E5A; --warn:#E39B00; --radius:16px;
  --font:"Noto Sans Thai","Prompt",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
.container{max-width:1080px;margin:0 auto;padding:0 16px}

/* header */
.topbar{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.topbar .container{display:flex;align-items:center;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em}
.brand .logo{width:44px;height:44px;border-radius:12px;object-fit:cover;background:#fff;border:1px solid var(--line);flex-shrink:0}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--muted);letter-spacing:0}
.brand span{white-space:nowrap}
.spacer{flex:1}
.nav{display:flex;gap:2px}
.nav a{padding:8px 12px;border-radius:10px;font-weight:600;font-size:14px;white-space:nowrap}
.nav a:hover{background:var(--bg)}
.cartbtn{position:relative;padding:8px 14px;border-radius:12px;background:var(--ink);color:#fff;font-weight:700;font-size:14px;white-space:nowrap;flex-shrink:0}
@media(max-width:640px){
  .topbar .container{gap:8px}
  .nav{display:none}                    /* มือถือ: ซ่อนลิงก์ข้อความ เหลือโลโก้ + ปุ่มตะกร้า (กดตะกร้า = หน้าสั่งซื้อ) */
  .brand .logo{width:40px;height:40px}
  .brand span{font-size:15px}
  .cartbtn{padding:8px 12px}
}
.cartbtn .n{position:absolute;top:-6px;right:-6px;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--red);color:#fff;font-size:12px;display:grid;place-items:center}

/* hero */
.hero{padding:28px 0 12px}
.hero h1{font-size:clamp(22px,4vw,34px);margin:0 0 6px;line-height:1.2}
.hero p{margin:0;color:var(--muted)}
.hero .cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:12px;border:0;cursor:pointer;font-weight:700;font-size:15px;transition:.15s}
.btn-line{background:#06C755;color:#fff}
.btn-line:hover{background:#05B04C}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-dark)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-dark)}
.btn-ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-sm{padding:8px 12px;font-size:13px;border-radius:10px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* categories */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0}
.cat{background:var(--card);border:1.5px solid var(--line);border-radius:var(--radius);padding:14px 12px;text-align:center;cursor:pointer;transition:.15s}
.cat .ic{font-size:26px}
.cat .lb{font-size:13px;font-weight:700;margin-top:4px}
.cat .ct{font-size:12px;color:var(--muted)}
.cat:hover{border-color:var(--teal)}
.cat.active{border-color:var(--red);background:#FFF4F4}
@media(max-width:640px){.cats{grid-template-columns:repeat(2,1fr)}}

.toolbar{display:flex;gap:10px;align-items:center;margin:8px 0 16px;flex-wrap:wrap}
.search{flex:1;min-width:200px;display:flex;align-items:center;gap:8px;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:0 12px}
.search input{flex:1;border:0;outline:0;padding:11px 0;background:transparent}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{padding:7px 12px;border-radius:999px;background:#fff;border:1.5px solid var(--line);font-size:13px;font-weight:600;cursor:pointer}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* product grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;padding-bottom:40px}
@media(max-width:640px){.grid{grid-template-columns:repeat(2,1fr);gap:10px}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;position:relative}
.card .img{aspect-ratio:1/1;background:#F1ECEA;overflow:hidden}
.card .img img{width:100%;height:100%;object-fit:cover}
.card .body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:4px;flex:1}
.card .brand-tag{font-size:11px;color:var(--teal-dark);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.card h3{font-size:14px;margin:0;line-height:1.35;font-weight:700}
.card .desc{font-size:12px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .price{font-weight:800;font-size:16px;margin-top:auto;padding-top:6px}
.card .price small{font-weight:500;color:var(--muted);font-size:12px}
.card .actions{display:flex;gap:6px;margin-top:8px}
.card .actions .btn{flex:1;padding:9px 6px;font-size:13px}
.badge{position:absolute;top:10px;left:10px;padding:4px 9px;border-radius:999px;font-size:11px;font-weight:800;color:#fff}
.badge.preorder{background:var(--warn)}
.badge.soldout{background:#777}
.badge.available{background:var(--ok)}
.card.soldout .img img{filter:grayscale(1);opacity:.7}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:40px 0}
.skeleton .card .img{animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* order page */
.order-wrap{max-width:720px;margin:0 auto;padding:20px 16px 120px}
.order-wrap h1{font-size:24px;margin:8px 0 4px}
.order-wrap .sub{color:var(--muted);margin:0 0 18px}
.section{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.section h2{font-size:16px;margin:0 0 12px;display:flex;align-items:center;gap:8px}
.section h2 .num{width:24px;height:24px;border-radius:50%;background:var(--red);color:#fff;font-size:13px;display:grid;place-items:center}
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:10px}
.field label{font-size:13px;font-weight:600}
.field label span{color:var(--red)}
.field input,.field textarea,.field select{border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;outline:0;background:#fff;width:100%}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--teal)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:520px){.row{grid-template-columns:1fr}}
.item{border:1.5px dashed var(--line);border-radius:12px;padding:12px;margin-bottom:10px;position:relative}
.item .grid3{display:grid;grid-template-columns:2fr 72px 160px;gap:8px}
@media(max-width:520px){.item .grid3{grid-template-columns:1fr 1fr;} .item .grid3 .field:first-child{grid-column:1/-1}}
.item .i-price{min-width:0}
.item .rm{position:absolute;top:8px;right:8px;border:0;background:transparent;color:var(--muted);cursor:pointer;font-size:18px}
.hint{font-size:12px;color:var(--muted)}
.summary{display:flex;flex-direction:column;gap:6px;font-size:14px}
.summary .line{display:flex;justify-content:space-between}
.summary .total{font-weight:800;font-size:18px;border-top:1px solid var(--line);padding-top:8px;margin-top:4px}
.stickybar{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 16px;z-index:30}
.stickybar .in{max-width:720px;margin:0 auto;display:flex;gap:10px;align-items:center}
.stickybar .in .btn{flex:1}
.notice{background:#FFF8E5;border:1px solid #F5DDA0;border-radius:12px;padding:10px 12px;font-size:13px}
.ok{background:#E9F8EF;border-color:#BFE7CD}
pre.preview{white-space:pre-wrap;background:#F6F6F6;border-radius:10px;padding:10px;font-size:12px;max-height:200px;overflow:auto}

/* footer */
footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:13px;text-align:center}
footer a{color:var(--teal-dark);font-weight:600}

/* toast */
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;opacity:0;transition:.2s;z-index:40;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* flight banner (public: next round only) */
.flight{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1.5px solid var(--teal);border-radius:var(--radius);padding:12px 14px;margin:6px 0 4px}
.flight.closed{border-color:var(--line);background:#F6F6F6}
.flight-ic{font-size:24px;line-height:1}
.flight-title{font-size:15px}
.flight-sub{font-size:13px;color:var(--muted)}
.flight.open .flight-sub strong{color:var(--red)}
.flight-note{font-size:12px;color:var(--muted);margin-top:2px}