/* ===========================================================
   ธัญญารับซื้อของเก่า.net  —  ธีมสี น้ำเงิน / ขาว / ดำ
   =========================================================== */
:root{
  --navy-950:#050e1f;
  --navy-900:#0b1f3f;
  --navy-800:#10305f;
  --blue-700:#14439b;
  --blue-600:#1256d4;
  --blue-500:#2f7ce8;
  --blue-100:#e7effc;
  --black:#111418;
  --ink:#1b2027;
  --muted:#5b6673;
  --line:#dfe5ee;
  --bg:#f4f6fa;
  --white:#ffffff;
  --radius:10px;
  --shadow:0 6px 24px rgba(5,14,31,.10);
  --shadow-lg:0 14px 40px rgba(5,14,31,.18);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Prompt',-apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue',sans-serif;
  font-size:15px;
  line-height:1.75;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--blue-600);text-decoration:none}
a:hover{color:var(--blue-700)}
h1,h2,h3,h4{font-weight:600;line-height:1.4;margin:0 0 .6em}
p{margin:0 0 1em}
.container{width:100%;max-width:1140px;margin:0 auto;padding:0 16px}
.text-center{text-align:center}

/* ---------- แถบบนสุด ---------- */
.topbar{
  background:linear-gradient(120deg,var(--navy-900) 0%,var(--blue-700) 55%,var(--blue-600) 100%);
  color:#fff;text-align:center;padding:9px 16px;
  padding-top:calc(9px + env(safe-area-inset-top,0px));
}
.topbar strong{font-size:19px;font-weight:600;letter-spacing:.2px}
.topbar .topbar-sub{font-size:15px;margin-top:1px}
.topbar a{color:#fff;text-decoration:underline;white-space:nowrap}
.topbar a:hover{color:#cfe0ff}

/* ---------- เฮดเดอร์ ---------- */
.site-header{
  background:var(--white);border-bottom:3px solid var(--blue-600);
  position:sticky;top:0;z-index:60;box-shadow:0 2px 10px rgba(5,14,31,.06);
}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:74px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:46px;height:46px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,var(--navy-900),var(--blue-600));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:21px;font-weight:600;box-shadow:var(--shadow);
}
.logo-text b{display:block;font-size:21px;font-weight:600;color:var(--navy-900);line-height:1.25}
.logo-text span{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.2px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  display:block;padding:9px 20px;border-radius:6px;font-size:15px;
  color:var(--navy-900);font-weight:500;transition:.18s;
}
.main-nav a:hover{background:var(--blue-100);color:var(--blue-700)}
.main-nav a.active{background:var(--blue-600);color:#fff}
.nav-toggle{
  display:none;background:var(--navy-900);color:#fff;border:0;
  width:44px;height:40px;border-radius:6px;font-size:18px;cursor:pointer;
}

/* ---------- แบนเนอร์ ---------- */
.hero-banner{
  background:
    radial-gradient(1100px 420px at 85% 15%,rgba(47,124,232,.35),transparent 60%),
    linear-gradient(115deg,var(--navy-950) 0%,var(--navy-900) 45%,var(--blue-700) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.hero-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    radial-gradient(circle at 12% 88%,rgba(255,255,255,.07) 0 34%,transparent 35%),
    radial-gradient(circle at 12% 88%,rgba(255,255,255,.07) 0 22%,transparent 23%),
    radial-gradient(circle at 88% 20%,rgba(255,255,255,.06) 0 40%,transparent 41%);
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,300px) 1fr auto;
  gap:28px;align-items:center;padding:34px 0;
}
.hero-photos{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.hero-photos img{
  border-radius:var(--radius);border:3px solid rgba(255,255,255,.85);
  box-shadow:var(--shadow-lg);aspect-ratio:1/1;object-fit:cover;width:100%;
}
.hero-photos img:first-child{grid-column:1/-1;aspect-ratio:16/10}
.hero-copy h2{font-size:32px;font-weight:600;margin-bottom:6px;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.hero-copy .hl{color:#8dd0ff}
.hero-copy .hero-sub{font-size:20px;color:#dce8fb;margin-bottom:4px}
.hero-copy .hero-note{font-size:14.5px;color:#a9c2e6;margin-bottom:16px}
.hero-call{font-size:14px;color:#a9c2e6;margin:0}
.hero-tel{
  display:inline-block;font-size:38px;font-weight:600;color:#fff;letter-spacing:1px;
  text-shadow:0 2px 14px rgba(0,0,0,.4);line-height:1.2;
}
.hero-tel:hover{color:#8dd0ff}
.hero-qr{background:#fff;padding:10px;border-radius:12px;box-shadow:var(--shadow-lg);text-align:center;width:170px}
.hero-qr img{width:150px;height:150px;margin:0 auto}
.hero-qr span{display:block;font-size:12px;color:var(--navy-900);font-weight:500;margin-top:5px;word-break:break-all}

/* ---------- ส่วนหัวข้อ (section) ---------- */
.section{padding:52px 0}
.section-gray{background:var(--bg)}
.section-white{background:var(--white)}
.section-dark{
  color:#fff;
  background:
    radial-gradient(900px 400px at 20% 0%,rgba(47,124,232,.4),transparent 62%),
    linear-gradient(120deg,var(--navy-950) 0%,var(--navy-900) 50%,var(--blue-700) 100%);
}
.section-dark h1{color:#fff;font-size:26px;text-align:center}
.section-dark h4{color:#d7e4f7;font-weight:400;font-size:16px;text-align:center;margin-bottom:26px}
.section-title{
  text-align:center;color:var(--blue-700);font-size:27px;margin-bottom:6px;
}
.section-title::after{
  content:"";display:block;width:74px;height:4px;border-radius:3px;
  background:linear-gradient(90deg,var(--navy-900),var(--blue-500));margin:12px auto 20px;
}
.section-text{font-size:16px;color:var(--ink);text-indent:2.2em;margin-bottom:22px}

/* ---------- ปุ่ม ---------- */
.btn-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:900px;margin:0 auto}
.btn{
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 22px;border-radius:8px;font-size:19px;font-weight:500;
  border:2px solid transparent;transition:.18s;cursor:pointer;
}
.btn i{font-size:20px}
.btn-tel{background:var(--white);color:var(--navy-900);border-color:var(--white)}
.btn-tel:hover{background:var(--blue-100);color:var(--navy-900);transform:translateY(-2px)}
.btn-line{background:var(--black);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-line:hover{background:#000;color:#8dd0ff;transform:translateY(-2px)}

/* ---------- แกลเลอรี ---------- */
.gallery{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px;
}
.gallery a{
  display:block;border-radius:var(--radius);overflow:hidden;background:#000;
  border:2px solid var(--white);box-shadow:var(--shadow);position:relative;
}
.gallery img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:.3s}
.gallery a:hover img{transform:scale(1.07);opacity:.82}
.gallery a::after{
  content:"\f00e";font-family:"Font Awesome 5 Free";font-weight:900;
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:26px;opacity:0;transition:.25s;text-shadow:0 2px 8px rgba(0,0,0,.6);
}
.gallery a:hover::after{opacity:1}

/* คาร์รูเซล */
.carousel{position:relative;background:var(--white);padding:26px 0}
.carousel-track{
  display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;
  scroll-behavior:smooth;padding:4px;-ms-overflow-style:none;scrollbar-width:none;
}
.carousel-track::-webkit-scrollbar{display:none}
.carousel-track a{
  flex:0 0 260px;scroll-snap-align:center;border-radius:var(--radius);overflow:hidden;
  border:3px solid var(--white);box-shadow:var(--shadow);background:#000;
}
.carousel-track img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:.3s}
.carousel-track a:hover img{opacity:.85;transform:scale(1.05)}
.carousel-btn{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;
  background:var(--navy-900);color:#fff;font-size:17px;box-shadow:var(--shadow-lg);
  display:flex;align-items:center;justify-content:center;transition:.18s;
}
.carousel-btn:hover{background:var(--blue-600)}
.carousel-prev{left:6px}
.carousel-next{right:6px}

/* ---------- ไลท์บ็อกซ์ ---------- */
.lightbox{
  position:fixed;inset:0;z-index:200;background:rgba(5,14,31,.94);
  display:none;align-items:center;justify-content:center;padding:54px 16px;
}
.lightbox.open{display:flex}
.lightbox img{max-width:100%;max-height:100%;border-radius:8px;box-shadow:var(--shadow-lg)}
.lightbox-close,.lightbox-nav{
  position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;cursor:pointer;
  width:46px;height:46px;border-radius:50%;font-size:20px;transition:.18s;
  display:flex;align-items:center;justify-content:center;
}
.lightbox-close:hover,.lightbox-nav:hover{background:var(--blue-600)}
.lightbox-close{top:calc(14px + env(safe-area-inset-top,0px));right:14px}
.lightbox-prev{left:14px;top:50%;transform:translateY(-50%)}
.lightbox-next{right:14px;top:50%;transform:translateY(-50%)}
.lightbox-count{
  position:absolute;bottom:calc(14px + env(safe-area-inset-bottom,0px));left:0;right:0;
  text-align:center;color:#a9c2e6;font-size:14px;
}

/* ---------- หน้าติดต่อเรา ---------- */
.page-head{
  background:linear-gradient(120deg,var(--navy-950),var(--navy-900) 60%,var(--blue-700));
  color:#fff;padding:34px 0;
}
.page-head h1{font-size:28px;margin:0;color:#fff}
.breadcrumb{font-size:14px;color:#a9c2e6;margin-top:4px}
.breadcrumb a{color:#a9c2e6;text-decoration:underline}
.breadcrumb a:hover{color:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.card{
  background:var(--white);border:1px solid var(--line);border-left:5px solid var(--blue-600);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);
}
.card h3{color:var(--navy-900);font-size:19px;margin-bottom:14px}
.contact-list{list-style:none;margin:0;padding:0}
.contact-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:15.5px;
}
.contact-list li:last-child{border-bottom:0}
.contact-list .ic{
  width:38px;height:38px;flex:none;border-radius:9px;color:#fff;font-size:15px;
  background:linear-gradient(135deg,var(--navy-900),var(--blue-600));
  display:flex;align-items:center;justify-content:center;
}
.contact-list .lb{display:block;font-size:12.5px;color:var(--muted);line-height:1.5}
.contact-list .vl{display:block;font-weight:500;color:var(--navy-900);word-break:break-word}
.qr-card{text-align:center}
.qr-card img{width:100%;max-width:250px;margin:0 auto 10px;border:6px solid var(--white);border-radius:10px;box-shadow:var(--shadow)}
.qr-card .lid{font-weight:600;color:var(--navy-900);font-size:17px;word-break:break-all}

/* ---------- ฟุตเตอร์ ---------- */
.site-footer{background:var(--navy-950);color:#c6d4e8;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 2fr;gap:30px;padding:46px 0}
.footer-head{
  color:#fff;font-weight:600;font-size:16px;margin-bottom:14px;
  padding-bottom:8px;border-bottom:2px solid var(--blue-600);display:inline-block;
}
.site-footer a{color:#8dd0ff}
.site-footer a:hover{color:#fff}
.footer-qr{width:100%;max-width:220px;background:#fff;padding:8px;border-radius:10px;margin-bottom:14px}
.stat-list{list-style:none;margin:0;padding:0}
.stat-list li{display:flex;justify-content:space-between;gap:10px;padding:5px 0;border-bottom:1px dotted rgba(255,255,255,.14)}
.stat-list li b{color:#fff;font-weight:500}
.tag-cloud{display:flex;flex-wrap:wrap;gap:7px}
.tag-cloud span{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  padding:3px 10px;border-radius:20px;font-size:12.5px;color:#c6d4e8;
}
.tag-cloud span:hover{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}
.copyright{
  border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center;
  font-size:13px;color:#8fa3bd;
  padding-bottom:calc(16px + env(safe-area-inset-bottom,0px));
}

/* ---------- ปุ่มลอย ---------- */
.fab{
  position:fixed;right:16px;z-index:90;display:flex;flex-direction:column;gap:10px;
  bottom:calc(16px + env(safe-area-inset-bottom,0px));
}
.fab a{
  width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;box-shadow:var(--shadow-lg);transition:.18s;
}
.fab a:hover{transform:scale(1.1);color:#fff}
.fab .fab-tel{background:linear-gradient(135deg,var(--blue-600),var(--blue-500))}
.fab .fab-line{background:var(--black);border:2px solid var(--blue-500)}
.fab .fab-top{background:var(--navy-800);font-size:18px}

/* ---------- จอเล็ก ---------- */
@media (max-width:991px){
  .hero-grid{grid-template-columns:1fr;text-align:center;gap:20px}
  .hero-photos{max-width:340px;margin:0 auto}
  .hero-qr{margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid>div:last-child{grid-column:1/-1}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;
    align-items:stretch;background:var(--white);border-top:1px solid var(--line);
    padding:8px;gap:4px;box-shadow:var(--shadow-lg);
  }
  .main-nav.open{display:flex}
  .site-header .container{position:relative}
  .topbar strong{font-size:16px}
  .topbar .topbar-sub{font-size:14px}
  .logo{flex-shrink:1;min-width:0;gap:9px}
  .logo-mark{width:40px;height:40px;font-size:18px;border-radius:10px}
  .logo-text b{font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .logo-text span{display:none}
  .hero-copy h2{font-size:23px}
  .hero-copy .hero-sub{font-size:17px}
  .hero-tel{font-size:30px}
  .section{padding:36px 0}
  .section-title,.section-dark h1{font-size:21px}
  .btn-row{grid-template-columns:1fr}
  .btn{font-size:17px}
  .gallery{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:9px}
  .carousel-track a{flex:0 0 78%}
  .footer-grid{grid-template-columns:1fr;padding:32px 0}
}

/* ไอคอน LINE แบบ SVG */
.ic-line{display:inline-block;vertical-align:-.15em;font-size:1.25em;flex:none}
.contact-list .ic .ic-line{font-size:1.15em;vertical-align:-.2em}
.fab .ic-line{font-size:26px}