/* ============================================================
   RakComSoft Shop — สไตล์กลางของร้านค้าออนไลน์ (S1)
   ------------------------------------------------------------
   ใช้ร่วมกัน 5 หน้า: shop / product / cart / checkout / account
   - โทเคนสี/ฟอนต์/เงา ชุดเดียวกับเว็บหลัก (คัดลอกมาให้หน้า shop
     ยืนเองได้ โดยไม่แตะไฟล์เดิม) + Dark Mode ชุดเดียวกัน
   - คอมโพเนนต์: navbar, การ์ดสินค้า (hover), skeleton, breadcrumb,
     ฟอร์ม, ตะกร้า, stepper, modal — ทั้งหมด namespace ปกติไม่ชนใคร
   ============================================================ */

:root{
  --white:#FFFFFF;--canvas:#F8FAFC;--card:#FFFFFF;--navy:#0F172A;--ink:#1E293B;
  --slate:#334155;--gray:#6B7280;--line:#E8EDF2;--teal:#14C8A8;--teal-ink:#0E9C83;--teal-tint:#EAFBF6;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04), 0 1px 3px rgba(15,23,42,.06);
  --shadow:0 10px 30px -12px rgba(15,23,42,.18), 0 4px 10px -6px rgba(15,23,42,.08);
  --shadow-lg:0 30px 60px -24px rgba(15,23,42,.28), 0 10px 24px -12px rgba(15,23,42,.12);
  --r:20px;--r-sm:14px;--maxw:1180px;--gutter:24px;color-scheme:light;
}
:root[data-theme="dark"]{
  --white:#0b1120;--canvas:#0f1930;--card:#141f38;--navy:#e9eef8;--ink:#e2e8f2;
  --slate:#b6c2d6;--gray:#8ba0bd;--line:#26344f;--teal:#19d4b3;--teal-ink:#58e0ca;--teal-tint:#12312e;
  --shadow-sm:0 1px 2px rgba(0,0,0,.35);--shadow:0 12px 30px -12px rgba(0,0,0,.6), 0 4px 10px -6px rgba(0,0,0,.4);
  --shadow-lg:0 30px 60px -24px rgba(0,0,0,.7), 0 10px 24px -12px rgba(0,0,0,.5);color-scheme:dark;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Prompt',sans-serif;background:var(--canvas);color:var(--ink);line-height:1.65;
  -webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}

/* ---------- ปุ่ม (ชุดเดียวกับเว็บหลัก) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:inherit;font-weight:600;
  font-size:1rem;padding:.85rem 1.5rem;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;white-space:nowrap}
.btn-primary{background:var(--teal);color:#04231D;box-shadow:0 8px 20px -8px rgba(20,200,168,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px -8px rgba(20,200,168,.7)}
.btn-dark{background:var(--navy);color:#fff}
:root[data-theme="dark"] .btn-dark{background:#20304f;color:#fff}
.btn-dark:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-ghost{background:var(--white);color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);border-color:#d5dde5}
:root[data-theme="dark"] .btn-ghost:hover{border-color:#33456a}
.btn-sm{padding:.55rem 1rem;font-size:.9rem}
.btn svg{width:1.1em;height:1.1em}
.btn:active{transform:translateY(0) scale(.97)}

/* ---------- Header / Nav ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line)}
:root[data-theme="dark"] header,[data-theme="dark"] header{background:rgba(13,20,38,.82)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:1rem}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:700;font-size:1.2rem;color:var(--navy);letter-spacing:-.01em;flex:none}
.brand .mark-img{width:40px;height:40px;border-radius:10px;object-fit:contain;background:#fff;display:block;flex:none;padding:3px}
.brand .tag{font-size:.7rem;font-weight:600;background:var(--teal-tint);color:var(--teal-ink);
  padding:.15rem .5rem;border-radius:999px;letter-spacing:.02em}
.nav-links{display:flex;gap:1.6rem;list-style:none;font-size:.95rem;font-weight:500;color:var(--slate)}
.nav-links a{padding:.4rem 0;border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease}
.nav-links a:hover{color:var(--teal-ink)}
.nav-links a.active{color:var(--teal-ink);border-bottom-color:var(--teal)}
.nav-actions{display:flex;align-items:center;gap:.6rem}
.icon-btn{position:relative;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:var(--card);
  color:var(--navy);cursor:pointer;display:grid;place-items:center;flex:none;
  transition:background .15s ease,border-color .15s ease,transform .15s ease}
.icon-btn:hover{transform:translateY(-2px);border-color:#d5dde5}
:root[data-theme="dark"] .icon-btn:hover{border-color:#33456a}
.icon-btn svg{width:20px;height:20px}
.cart-badge{position:absolute;top:-6px;right:-6px;min-width:19px;height:19px;border-radius:999px;background:var(--teal);
  color:#04231D;font-size:.68rem;font-weight:700;display:grid;place-items:center;padding:0 4px;
  opacity:0;transform:scale(.5);transition:opacity .2s ease,transform .25s cubic-bezier(.2,.9,.3,1.4)}
.cart-badge.on{opacity:1;transform:scale(1)}
.theme-toggle .sun{display:none}
:root[data-theme="dark"] .theme-toggle .moon{display:none}
:root[data-theme="dark"] .theme-toggle .sun{display:block}
.hamburger{display:none}
.mobile-menu{display:none;position:fixed;inset:72px 0 auto 0;z-index:49;background:var(--white);
  padding:16px var(--gutter) 22px;box-shadow:var(--shadow);border-bottom:1px solid var(--line)}
:root[data-theme="dark"] .mobile-menu{background:#0f1930}
.mobile-menu.open{display:block}
.mobile-menu ul{list-style:none;display:grid;gap:.2rem}
.mobile-menu a{display:block;padding:.7rem .4rem;font-weight:500;border-radius:10px}
.mobile-menu a:hover{background:var(--teal-tint);color:var(--teal-ink)}

/* ---------- โครงหน้า ---------- */
.page{padding:34px 0 70px;min-height:60vh}
.crumbs{display:flex;flex-wrap:wrap;gap:.45rem;align-items:center;font-size:.86rem;color:var(--gray);margin-bottom:18px}
.crumbs a:hover{color:var(--teal-ink)}
.crumbs .sep{opacity:.5}
.page-head{margin-bottom:22px}
.kicker{font-size:.78rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-ink);margin-bottom:.4rem}
.page-head h1{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;color:var(--navy);letter-spacing:-.02em;line-height:1.2}
.page-head p{color:var(--gray);margin-top:.3rem}

/* ---------- Toolbar (ค้นหา/กรอง/เรียง) ---------- */
.shop-toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:16px}
.search-box{position:relative;flex:1;min-width:220px}
.search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--gray)}
.search-box input{width:100%;height:46px;border-radius:12px;border:1px solid var(--line);background:var(--card);
  color:var(--ink);font:inherit;font-size:.95rem;padding:0 14px 0 40px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}
.search-box input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(20,200,168,.15)}
.select{height:46px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);
  font:inherit;font-size:.92rem;padding:0 12px;outline:none;cursor:pointer}
.select:focus{border-color:var(--teal)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.chip{padding:.45rem 1rem;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--slate);
  font-size:.88rem;font-weight:500;cursor:pointer;transition:all .15s ease}
.chip:hover{border-color:var(--teal);color:var(--teal-ink)}
.chip.on{background:var(--navy);border-color:var(--navy);color:#fff}
:root[data-theme="dark"] .chip.on{background:var(--teal);border-color:var(--teal);color:#04231D}
.result-note{font-size:.85rem;color:var(--gray);margin-bottom:14px}

/* ---------- ตารางสินค้า (Card Grid) ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,border-color .22s ease;position:relative}
.pcard:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}
.pcard-img{aspect-ratio:4/3;background:var(--teal-tint);display:grid;place-items:center;overflow:hidden;position:relative}
.pcard-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:8px;transition:transform .35s ease}
.pcard:hover .pcard-img img{transform:scale(1.05)}
.pbadge{position:absolute;top:10px;left:10px;z-index:2;font-size:.72rem;font-weight:700;padding:.22rem .6rem;border-radius:999px}
.pbadge.hot{background:var(--teal);color:#04231D}
.pbadge.sale{background:#E25555;color:#fff}
.pcard-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:.35rem;flex:1}
.pcat{font-size:.72rem;font-weight:600;color:var(--teal-ink);letter-spacing:.04em}
.pname{font-size:.98rem;font-weight:600;color:var(--navy);line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.8em}
.pprice{margin-top:auto;padding-top:.4rem;display:flex;align-items:baseline;gap:.5rem;flex-wrap:wrap}
.pprice .now{font-size:1.15rem;font-weight:700;color:var(--navy)}
.pprice .was{font-size:.85rem;color:var(--gray);text-decoration:line-through}
.pprice .unit{font-size:.78rem;color:var(--gray)}
.pprice .ask{font-size:.95rem;font-weight:600;color:var(--teal-ink)}
.pcard-acts{display:flex;gap:8px;padding:0 16px 16px}
.pcard-acts .btn{flex:1;padding:.6rem .5rem;font-size:.88rem}

/* Skeleton โหลดสินค้า */
@keyframes shimmer{0%{background-position:-400px 0}100%{background-position:400px 0}}
.skel .pcard-img,.skel .sk-line{background:linear-gradient(90deg,var(--line) 25%,var(--canvas) 50%,var(--line) 75%);
  background-size:800px 100%;animation:shimmer 1.3s linear infinite}
.skel .sk-line{height:14px;border-radius:7px;margin:6px 16px}
.skel .sk-line.w60{width:60%}.skel .sk-line.w40{width:40%;margin-bottom:16px}

/* Pagination */
.pager{display:flex;justify-content:center;gap:8px;margin-top:28px}
.pager button{min-width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--card);
  color:var(--slate);font:inherit;font-weight:600;cursor:pointer;transition:all .15s ease}
.pager button:hover:not(:disabled){border-color:var(--teal);color:var(--teal-ink)}
.pager button.on{background:var(--navy);border-color:var(--navy);color:#fff}
:root[data-theme="dark"] .pager button.on{background:var(--teal);border-color:var(--teal);color:#04231D}
.pager button:disabled{opacity:.4;cursor:default}
.empty-box{text-align:center;padding:60px 20px;color:var(--gray)}
.empty-box svg{width:46px;height:46px;margin:0 auto 12px;opacity:.5}

/* ---------- หน้ารายละเอียดสินค้า ---------- */
.pd-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:34px;align-items:start}
.pd-gallery{position:sticky;top:92px}
.pd-main{aspect-ratio:4/3;background:var(--teal-tint);border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;display:grid;place-items:center;position:relative}
.pd-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:10px}
.pd-thumbs{display:flex;gap:10px;margin-top:12px}
.pd-thumbs button{width:72px;height:56px;border-radius:10px;border:2px solid var(--line);overflow:hidden;
  background:var(--teal-tint);cursor:pointer;padding:0;transition:border-color .15s ease}
.pd-thumbs button.on{border-color:var(--teal)}
.pd-thumbs img{width:100%;height:100%;object-fit:contain;padding:3px}
.pd-info .pcat{font-size:.8rem}
.pd-info h1{font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:700;color:var(--navy);letter-spacing:-.01em;line-height:1.25;margin:.2rem 0 .5rem}
.pd-sku{font-size:.82rem;color:var(--gray);margin-bottom:14px}
.pd-price{display:flex;align-items:baseline;gap:.7rem;flex-wrap:wrap;padding:14px 18px;border-radius:var(--r-sm);
  background:var(--card);border:1px solid var(--line);margin-bottom:16px}
.pd-price .now{font-size:1.9rem;font-weight:700;color:var(--navy);letter-spacing:-.02em}
.pd-price .was{font-size:1rem;color:var(--gray);text-decoration:line-through}
.pd-price .unit{font-size:.85rem;color:var(--gray)}
.pd-price .save{font-size:.78rem;font-weight:700;background:#FDE8E8;color:#C0392B;padding:.2rem .6rem;border-radius:999px}
:root[data-theme="dark"] .pd-price .save{background:#3d1f24;color:#ff9c9c}
.pd-desc{color:var(--slate);margin-bottom:18px}
.pd-acts{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.pd-line-hint{font-size:.82rem;color:var(--gray);margin-bottom:22px}
.pd-sec{margin-top:34px}
.pd-sec h2{font-size:1.15rem;font-weight:700;color:var(--navy);margin-bottom:12px}
.spec-table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.spec-table tr+tr{border-top:1px solid var(--line)}
.spec-table th{width:36%;text-align:left;font-weight:600;color:var(--slate);padding:11px 16px;background:var(--canvas);font-size:.9rem}
.spec-table td{padding:11px 16px;color:var(--ink);font-size:.9rem}
.qty-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.qty-row label{font-size:.9rem;color:var(--slate);font-weight:500}

/* Stepper จำนวน */
.stepper{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:10px;background:var(--card);overflow:hidden}
.stepper button{width:38px;height:40px;border:none;background:none;color:var(--navy);font-size:1.1rem;cursor:pointer;transition:background .15s ease}
.stepper button:hover{background:var(--teal-tint);color:var(--teal-ink)}
.stepper input{width:48px;height:40px;border:none;background:none;text-align:center;font:inherit;font-weight:600;color:var(--ink);outline:none}

/* ---------- ตะกร้า ---------- */
.cart-wrap{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;align-items:start}
.cart-list{display:grid;gap:12px}
.citem{display:grid;grid-template-columns:86px 1fr auto;gap:14px;align-items:center;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-sm);padding:12px}
.citem-img{width:86px;height:66px;border-radius:10px;background:var(--teal-tint);overflow:hidden}
.citem-img img{width:100%;height:100%;object-fit:contain;padding:3px}
.citem-name{font-weight:600;color:var(--navy);font-size:.95rem;line-height:1.35}
.citem-price{font-size:.85rem;color:var(--gray)}
.citem-right{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.citem-total{font-weight:700;color:var(--navy)}
.citem-del{border:none;background:none;color:var(--gray);font-size:.8rem;cursor:pointer;display:inline-flex;align-items:center;gap:.3rem}
.citem-del:hover{color:#E25555}
.sumbox{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow-sm);position:sticky;top:92px}
.sumbox h2{font-size:1.05rem;font-weight:700;color:var(--navy);margin-bottom:14px}
.sumline{display:flex;justify-content:space-between;font-size:.92rem;color:var(--slate);padding:.35rem 0}
.sumline.total{border-top:1px solid var(--line);margin-top:10px;padding-top:14px;font-size:1.05rem;font-weight:700;color:var(--navy)}
.sumbox .btn{width:100%;margin-top:16px}
.sum-note{font-size:.78rem;color:var(--gray);margin-top:10px;text-align:center}

/* ---------- Checkout ฟอร์ม ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:.35rem}
.field.full{grid-column:1/-1}
.field label{font-size:.86rem;font-weight:600;color:var(--slate)}
.field label .req{color:#E25555}
.field input,.field textarea{border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);
  font:inherit;font-size:.95rem;padding:.7rem .9rem;outline:none;transition:border-color .15s ease,box-shadow .15s ease}
.field input:focus,.field textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(20,200,168,.15)}
.field input.err{border-color:#E25555}
.field textarea{resize:vertical;min-height:88px}

/* ---------- Modal (สรุปออเดอร์ → LINE) ---------- */
.modal-mask{position:fixed;inset:0;z-index:90;background:rgba(6,12,26,.55);display:none;place-items:center;padding:20px;
  backdrop-filter:blur(4px)}
.modal-mask.open{display:grid}
.modal{width:100%;max-width:460px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow-lg);padding:26px;animation:mdIn .3s cubic-bezier(.2,.9,.3,1.15)}
@keyframes mdIn{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:none}}
.modal h3{font-size:1.1rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.modal p{font-size:.9rem;color:var(--slate);margin-bottom:14px}
.order-pre{background:var(--canvas);border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  font-size:.8rem;color:var(--ink);white-space:pre-wrap;max-height:200px;overflow:auto;margin-bottom:14px}
.modal .btn{width:100%}
.modal .btn+.btn{margin-top:8px}

/* ---------- My Account ---------- */
.acc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.acc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);padding:22px;
  display:flex;flex-direction:column;gap:.4rem;transition:transform .2s ease,box-shadow .2s ease}
.acc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.acc-card .ico{width:42px;height:42px;border-radius:11px;background:var(--teal-tint);color:var(--teal-ink);
  display:grid;place-items:center;margin-bottom:.4rem}
.acc-card .ico svg{width:22px;height:22px}
.acc-card h3{font-size:1rem;font-weight:700;color:var(--navy)}
.acc-card p{font-size:.85rem;color:var(--gray)}
.acc-card .soon{font-size:.7rem;font-weight:700;color:var(--teal-ink);background:var(--teal-tint);
  padding:.15rem .55rem;border-radius:999px;width:fit-content;margin-top:.4rem}
.acc-note{background:var(--teal-tint);border-radius:var(--r-sm);padding:16px 20px;color:var(--teal-ink);
  font-size:.9rem;margin-bottom:24px}

/* ---------- Toast แจ้งเพิ่มลงตะกร้า ---------- */
.toastbar{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);z-index:95;background:var(--navy);color:#fff;
  padding:.7rem 1.3rem;border-radius:999px;font-size:.9rem;font-weight:500;box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;transition:opacity .25s ease,transform .3s cubic-bezier(.2,.9,.3,1.2);display:flex;gap:.5rem;align-items:center}
:root[data-theme="dark"] .toastbar{background:var(--teal);color:#04231D}
.toastbar.on{opacity:1;transform:translate(-50%,0)}

/* ---------- Footer ---------- */
footer{background:var(--navy);color:#cbd5e1;padding:34px 0;margin-top:40px}
:root[data-theme="dark"] footer{background:#0a1020}
.foot-line{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:space-between;font-size:.88rem}
.foot-line a:hover{color:#fff}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 20px}

/* ---------- Responsive ---------- */
@media (max-width:1020px){
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .acc-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav-links{display:none}
  .hamburger{display:grid}
  .pd-grid{grid-template-columns:1fr}
  .pd-gallery{position:static}
  .cart-wrap{grid-template-columns:1fr}
  .sumbox{position:static}
}
@media (max-width:640px){
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .pcard-acts{flex-direction:column}
  .form-grid{grid-template-columns:1fr}
  .acc-grid{grid-template-columns:1fr}
  .citem{grid-template-columns:70px 1fr}
  .citem-right{grid-column:1/-1;flex-direction:row;justify-content:space-between;align-items:center}
  .pname{min-height:auto}
}
/* very narrow phones — keep header from overflowing */
@media (max-width:420px){
  .nav{gap:.5rem}
  .nav-actions{gap:.4rem}
  .brand{font-size:1.05rem;gap:.45rem}
  .brand .mark-img{width:34px;height:34px}
  .brand .tag{display:none}
}