/* ============================================================
   ม ทวีภัณฑ์ — Shared Design System (theme.css)
   Industrial-retail: ink navy + emerald green
   ใช้ร่วมกันทุกหน้า (หน้าหลัก + หน้าสินค้า)
   ============================================================ */
:root{
  /* --- palette --- */
  --bg:#f5f6f8;
  --bg-soft:#eef0f4;
  --surface:#ffffff;
  --surface-2:#f9fafb;
  --ink:#141b2b;
  --ink-2:#33405a;
  --ink-dim:#54617a;
  --ink-mute:#6b7385;
  --line:#e3e7ee;
  --line-strong:#cfd6e2;

  /* brand — สีหลักเป็นเขียวมรกต (ชื่อ --amber คงไว้เพื่อไม่ต้องแก้ทุกไฟล์ แต่ค่าคือเขียว) */
  --amber:#12a150;         /* emerald green — สีหลักของแบรนด์ (ต่างจากเขียว LINE #06c755) */
  --amber-dark:#0b7f3c;
  --amber-soft:#e2f5ea;
  --navy:#101a30;          /* deep ink navy */
  --navy-2:#18233f;
  --blue:#2563eb;          /* electric blue (secondary) */
  --blue-soft:#e6efff;
  --green:#0ea75d;
  --red:#e5484d;

  --accent:var(--amber);
  --accent-ink:#ffffff;

  /* effects */
  --radius:16px;
  --radius-sm:11px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(16,26,48,.06),0 2px 6px rgba(16,26,48,.05);
  --shadow:0 6px 22px rgba(16,26,48,.10);
  --shadow-lg:0 18px 50px rgba(16,26,48,.18);
  --maxw:1180px;
  --ring:0 0 0 3px rgba(18,161,80,.32);
  /* app chrome (มือถือ): ความสูงแถบเมนูล่าง — ทุก sticky/padding อ้างค่าเดียวกัน */
  --tabbar-h:58px;
}

*{box-sizing:border-box}
/* หัวข้อสำหรับ screen reader / โครงสร้าง SEO โดยไม่เปลี่ยนหน้าตา */
.vh{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
/* reserve header height before layout.js injects it (reduce layout shift) */
#site-header{display:block;min-height:64px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Anuphan",system-ui,-apple-system,sans-serif;
  line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,.display{font-family:"Kanit","Anuphan",sans-serif;letter-spacing:.2px;line-height:1.18;margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block} /* height:auto กัน attribute height ทำภาพยืด */
button{font-family:inherit}
/* UP-4: ring ตาม border-radius ของ element เอง (ไม่บังคับ 8px ที่ทำให้ปุ่มวงรีเพี้ยน) */
:focus-visible{outline:2px solid transparent;box-shadow:var(--ring)}
/* UP-1: กันข้อความไทยแวบก่อนสลับเป็นอังกฤษ (เฉพาะผู้ใช้ที่บันทึกภาษา EN ไว้) */
html.pending-lang [data-th]{visibility:hidden}
/* UP-2 / C-2: การ์ดสินค้า "เร็ว ๆ นี้" + รองรับรูปสินค้าจริง */
.prod.soon{opacity:.86}
.prod.soon .thumb{filter:grayscale(.4)}
.prod .thumb{overflow:hidden}
.prod .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.prod:hover .thumb img{transform:scale(1.05)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.eyebrow{font-family:"Kanit",sans-serif;font-size:.75rem;letter-spacing:.24em;
  text-transform:uppercase;color:var(--amber-dark);font-weight:600}
.muted{color:var(--ink-dim)}
.center{text-align:center}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;
  padding:13px 24px;border-radius:999px;cursor:pointer;border:1px solid transparent;font-size:1rem;
  font-family:"Anuphan",sans-serif;transition:transform .15s ease,box-shadow .2s,background .2s,border-color .2s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:linear-gradient(135deg,var(--amber),var(--amber-dark));color:#ffffff;
  box-shadow:0 8px 24px rgba(11,127,60,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(11,127,60,.4)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--navy-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber-dark)}
.btn-line{background:#06c755;color:#fff;border-color:transparent}
.btn-line:hover{background:#05b34c;transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:.9rem}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;font-family:"Kanit",sans-serif;font-weight:700;font-size:1.16rem;color:var(--ink)}
.brand .mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:linear-gradient(150deg,var(--navy),var(--navy-2));color:var(--amber);
  font-size:1rem;font-weight:700;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.brand .mark svg{width:20px;height:20px}
.brand .b-th{display:flex;flex-direction:column;line-height:1.05}
.brand .b-th small{font-family:"Anuphan";font-weight:500;font-size:.62rem;color:var(--ink-mute);letter-spacing:.14em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px;font-size:.94rem;font-weight:500}
.nav-links a{color:var(--ink-2);transition:color .15s;position:relative;padding:4px 0}
.nav-links a:hover{color:var(--amber-dark)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-right{display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line-strong);border-radius:999px;overflow:hidden;font-family:"Kanit",sans-serif}
.lang button{background:transparent;color:var(--ink-dim);border:0;padding:5px 11px;font-size:.78rem;cursor:pointer;font-family:inherit;font-weight:600;transition:.15s}
.lang button.on{background:var(--navy);color:var(--amber)}
.nav-toggle{display:none;background:transparent;border:1px solid var(--line-strong);border-radius:10px;width:42px;height:40px;cursor:pointer;color:var(--ink)}
.nav-toggle svg{width:22px;height:22px;margin:auto}
.cart-btn{position:relative;display:grid;place-items:center;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line-strong);color:var(--ink-2);transition:border-color .15s,color .15s}
.cart-btn:hover{border-color:var(--amber);color:var(--amber-dark)}
.cart-btn svg{width:20px;height:20px}
.cart-badge{position:absolute;top:-7px;right:-7px;min-width:19px;height:19px;padding:0 5px;border-radius:999px;
  background:var(--amber);color:#ffffff;font-family:"Kanit",sans-serif;font-weight:700;font-size:.72rem;
  display:grid;place-items:center;line-height:1;box-shadow:0 2px 6px rgba(11,127,60,.4)}
.cart-badge[hidden]{display:none}

/* ---------- sections ---------- */
section{padding:64px 0}
.sec-head{max-width:64ch;margin-bottom:8px}
.sec-head.ctr{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(1.7rem,3.6vw,2.5rem);margin:10px 0 10px;font-weight:700}
.sec-head p{color:var(--ink-dim);margin:0;font-size:1.02rem}
/* แถบ accent ใต้หัวข้อทุก section — เอกลักษณ์แบรนด์ */
.sec-head h2::after{content:"";display:block;width:52px;height:4px;border-radius:999px;
  margin-top:13px;background:linear-gradient(90deg,var(--amber),var(--amber-dark))}
.sec-head.ctr h2::after{margin-left:auto;margin-right:auto}
.sec-head p{margin-top:10px}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-strong)}
.badge{display:inline-flex;align-items:center;gap:5px;background:var(--amber-soft);color:var(--amber-dark);
  font-size:.72rem;font-weight:700;padding:4px 11px;border-radius:999px;letter-spacing:.02em}
.badge.blue{background:var(--blue-soft);color:var(--blue)}
.badge.green{background:#e4f6ec;color:var(--green)}
.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--surface-2);
  padding:6px 13px;border-radius:999px;font-size:.85rem;color:var(--ink-2)}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#c8d0e0;padding:52px 0 26px;margin-top:24px}
.site-footer a{color:#c8d0e0;transition:color .15s}
.site-footer a:hover{color:var(--amber)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.15fr;gap:28px}
.foot-brand .brand{color:#fff}
.foot-brand .brand .mark{background:linear-gradient(150deg,var(--amber),var(--amber-dark));color:var(--navy)}
.foot-brand p{color:#93a0bd;font-size:.9rem;margin:14px 0 0;max-width:34ch}
.foot-col h2{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:#7a879f;font-weight:600;margin-bottom:14px;font-family:"Kanit";line-height:1.2}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:.92rem}
.foot-contact{display:grid;gap:11px;font-size:.92rem}
.foot-contact .row{display:flex;gap:10px;align-items:flex-start}
.foot-contact svg{width:18px;height:18px;color:var(--amber);flex:none;margin-top:2px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:34px;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:#7a879f;font-size:.84rem}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);
  background:var(--navy);color:#fff;padding:12px 22px;border-radius:999px;font-weight:600;
  opacity:0;pointer-events:none;transition:.3s;z-index:200;font-size:.92rem;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast b{color:var(--amber)}

/* ---------- order form (name / address / phone) ---------- */
.order-form{display:grid;gap:10px;margin:6px 0 4px}
.order-form label{font-size:.82rem;color:var(--ink-dim);font-weight:500;display:block;margin-bottom:3px}
.order-form input,.order-form textarea{width:100%;font-family:inherit;font-size:.95rem;color:var(--ink);
  background:var(--surface-2);border:1px solid var(--line);border-radius:11px;padding:11px 13px;transition:border-color .15s}
.order-form input:focus,.order-form textarea:focus{border-color:var(--amber);background:var(--surface)}
.order-form textarea{resize:vertical;min-height:64px}
.of-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:520px){.of-row{grid-template-columns:1fr}}

/* savings badge on price options */
.save{display:inline-block;background:#e4f6ec;color:var(--green);font-size:.68rem;font-weight:700;
  padding:2px 7px;border-radius:999px;margin-left:6px;vertical-align:middle}

/* alt payment (bank copy) */
.pay-alt{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);text-align:left}
.pay-alt .lbl{font-size:.78rem;color:var(--ink-mute);margin-bottom:4px}
.pay-alt .acct{display:flex;align-items:center;gap:8px;justify-content:space-between;gap:10px}
.pay-alt .acct b{font-family:"Kanit";font-size:.9rem;font-weight:600;color:var(--ink)}
.copy-btn{background:var(--surface-2);border:1px solid var(--line);border-radius:8px;color:var(--ink-2);
  font-size:.78rem;font-weight:600;padding:5px 10px;cursor:pointer;white-space:nowrap;font-family:inherit}
.copy-btn:hover{border-color:var(--amber);color:var(--amber-dark)}

/* ---------- sticky mobile checkout bar ---------- */
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:130;background:var(--surface);
  border-top:1px solid var(--line);box-shadow:0 -6px 22px rgba(16,26,48,.12);padding:10px 16px;
  display:none;align-items:center;justify-content:space-between;gap:12px;transform:translateY(110%);transition:transform .25s,visibility .25s;visibility:hidden}
.mobile-cta.show{transform:translateY(0);visibility:visible}
.mobile-cta .mc-total{font-family:"Kanit";line-height:1.1}
.mobile-cta .mc-total small{display:block;color:var(--ink-mute);font-size:.72rem;font-weight:500;font-family:"Anuphan"}
.mobile-cta .mc-total b{font-size:1.3rem;color:var(--amber-dark)}
.mobile-cta .btn{flex:1;max-width:220px}

/* ---------- floating LINE ---------- */
.fab-line{position:fixed;right:20px;bottom:22px;z-index:120;background:#06c755;color:#fff;
  border-radius:999px;padding:13px 20px;font-weight:600;display:inline-flex;align-items:center;gap:9px;
  box-shadow:0 10px 30px rgba(6,199,85,.4);transition:transform .15s}
.fab-line:hover{transform:translateY(-3px)}
.fab-line svg{width:20px;height:20px}

/* ---------- bottom tab bar (มือถือ): หน้าแรก · สินค้า · ตะกร้า · LINE ---------- */
.tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:125;
  height:calc(var(--tabbar-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
  grid-auto-flow:column;grid-auto-columns:1fr;background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -4px 18px rgba(16,26,48,.08)}
.tabbar a{display:grid;place-items:center;align-content:center;gap:3px;min-height:48px;font-size:.7rem;font-weight:600;
  color:var(--ink-mute);text-decoration:none;position:relative;-webkit-tap-highlight-color:transparent}
.tabbar a svg{width:22px;height:22px}
.tabbar a[aria-current="page"]{color:var(--amber-dark)}
.tabbar a.tab-line{color:#06c755}
.tabbar .tab-badge{position:absolute;top:6px;left:calc(50% + 6px);min-width:17px;height:17px;padding:0 4px;border-radius:999px;
  background:var(--amber);color:#fff;font-size:.66rem;font-weight:700;display:grid;place-items:center;font-family:"Kanit"}
.tabbar .tab-badge[hidden]{display:none}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .nav-links{position:fixed;inset:64px 0 auto 0;background:var(--surface);flex-direction:column;
    align-items:stretch;gap:0;padding:8px 0;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    transform:translateY(-140%);transition:transform .25s;visibility:hidden}
  .nav-links.open{transform:translateY(0);visibility:visible}
  .nav-links a{padding:13px 24px;border-bottom:1px solid var(--line)}
  .nav-toggle{display:grid;place-items:center}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .foot-brand{grid-column:1/-1}
  /* UF-1: หุบแถบขวาให้พอดีมือถือ — ปุ่ม LINE บน header เหลือไอคอน (มี FAB อยู่แล้ว) */
  .nav-right{gap:8px}
  .brand{flex:none;white-space:nowrap}
  .site-header .btn-line{width:40px;height:40px;padding:0;justify-content:center;flex:none}
  .site-header .btn-line span{display:none}
}
@media(max-width:900px){
  /* แถบเมนูล่างแทน FAB — ปุ่ม LINE ย้ายไปเป็นแท็บ, เนื้อหาเผื่อที่ให้แถบ */
  .tabbar{display:grid}
  .fab-line{display:none}
  body{padding-bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom))}
  .mobile-cta{display:flex;bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom))}
  body.mcta-on{padding-bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 66px)}
  .toast{bottom:calc(var(--tabbar-h) + 16px)}
  /* UF-3: ยก toast ให้พ้นแถบสั่งซื้อลอยตอนมีของในตะกร้า */
  body.mcta-on .toast{bottom:calc(var(--tabbar-h) + 90px)}
}
@media(max-width:520px){
  /* footer มือถือ: คอลัมน์ลิงก์คู่กัน + ระยะแน่นขึ้น (density) */
  .foot-grid{grid-template-columns:1fr 1fr;gap:18px 16px}
  .site-footer{padding:34px 0 18px}
  .foot-col ul{gap:6px}
  .fab-line span{display:none}
  .brand .b-th small{display:none}
  .nav-links{top:64px}
}
@media(max-width:400px){
  /* UF-1: จอเล็กมาก — ซ่อนปุ่ม LINE บน header ทั้งปุ่ม (ใช้ FAB ลอยแทน) เหลือ ตะกร้า/ภาษา/เมนู */
  .site-header .btn-line{display:none}
  .nav-right{gap:6px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto}}