/* ============================================================================
   WECON — สไตล์รวมของเว็บไซต์
   สีแบรนด์แก้ได้ที่ :root ด้านล่างนี้ที่เดียว
============================================================================ */
:root{
  --brand:#1B2437;          /* กรมท่า — สีหลัก (ตามโลโก้) */
  --brand-dark:#0E1524;
  --brand-soft:#eef1f6;
  --accent:#C3A05A;         /* ทอง — สีรอง */
  --accent-light:#E4CE9B;
  --accent-dark:#9C7B39;
  --ink:#161c26;
  --muted:#6a7383;
  --line:#e4e7ee;
  --bg:#f6f7f9;
  --card:#ffffff;
  --line-green:#06C755;
  --radius:14px;
  --shadow:0 2px 8px rgba(16,24,40,.06), 0 12px 32px rgba(16,24,40,.07);
  --wrap:1120px;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:'Sarabun','Noto Sans Thai',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--bg);color:var(--ink);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:16px}
h1,h2,h3{line-height:1.35;margin:0 0 12px;font-weight:800}
p{margin:0 0 14px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section.tight{padding:44px 0}
.section.alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.center{text-align:center}
.eyebrow{
  color:var(--accent);font-weight:700;font-size:13px;letter-spacing:2px;
  text-transform:uppercase;margin:0 0 8px
}
.section h2{font-size:clamp(22px,3.4vw,32px)}
.lead{color:var(--muted);max-width:640px}
.center .lead{margin-left:auto;margin-right:auto}

/* ---------- ปุ่ม ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;border:1px solid var(--line);
  background:var(--card);color:var(--ink);text-decoration:none;font-weight:700;
  transition:transform .12s ease, box-shadow .12s ease;white-space:nowrap
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn.primary{background:linear-gradient(135deg,var(--accent-light),var(--accent) 45%,var(--accent-dark));border-color:var(--accent-dark);color:#14192a;text-shadow:0 1px 0 rgba(255,255,255,.25)}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn.line{background:var(--line-green);border-color:var(--line-green);color:#fff}
.btn.lg{padding:14px 28px;font-size:17px}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.center .btn-row{justify-content:center}

/* ---------- แถบเมนูด้านบน ---------- */
.topbar{
  position:sticky;top:0;z-index:60;background:var(--brand);color:#fff;
}
.topbar .wrap{display:flex;align-items:center;gap:16px;padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand img{height:42px;width:auto}
.brand .name{font-weight:700;letter-spacing:5px;font-size:20px;line-height:1.15}
.brand .tag{font-size:11px;opacity:.8;line-height:1.2}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{
  color:#fff;text-decoration:none;font-size:15px;padding:8px 12px;border-radius:8px;opacity:.9
}
.nav a:hover{background:rgba(255,255,255,.1);opacity:1}
.nav a.active{opacity:1;font-weight:700;box-shadow:inset 0 -2px 0 var(--accent)}
.nav .btn{margin-left:8px;padding:8px 16px}
.navtoggle{
  display:none;margin-left:auto;background:transparent;border:1px solid rgba(255,255,255,.4);
  color:#fff;border-radius:8px;padding:6px 12px;font-size:18px;line-height:1
}

/* ---------- ฮีโร่ ---------- */
.hero{
  background:linear-gradient(160deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;padding:72px 0 96px;position:relative;overflow:hidden
}
.hero.home{
  padding:110px 0 130px;
  background:
    linear-gradient(105deg, rgba(14,21,36,.94) 0%, rgba(14,21,36,.82) 45%, rgba(14,21,36,.45) 100%),
    url('../img/hero.jpg') center/cover no-repeat;
}
.hero:after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:40px;
  background:var(--bg);border-radius:40px 40px 0 0
}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-size:clamp(28px,5.4vw,46px);margin:0 0 16px}
.hero h1 span{color:var(--accent)}
.hero p{max-width:600px;opacity:.92;font-size:17px}
.hero.sub{padding:48px 0 60px}
.hero.sub h1{font-size:clamp(24px,4.4vw,36px);margin-bottom:8px}
.hero.sub p{margin-bottom:0}

/* ---------- แถบจุดเด่น ---------- */
.strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  margin-top:-46px;position:relative;z-index:2;box-shadow:var(--shadow)
}
.strip div{background:var(--card);padding:18px 16px;text-align:center}
.strip b{display:block;color:var(--brand);font-size:20px}
.strip small{color:var(--muted);font-size:13px}

/* ---------- การ์ด ---------- */
.grid{display:grid;gap:20px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow)
}
.card h3{font-size:19px;margin-bottom:6px}
.card p{color:var(--muted);margin-bottom:0;font-size:15px}
.card .price{
  display:inline-block;margin-top:14px;background:var(--brand-soft);color:var(--brand);
  font-weight:700;font-size:14px;padding:5px 12px;border-radius:999px
}
.icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px
}

/* ---------- ขั้นตอน ---------- */
.steps{counter-reset:s;display:grid;gap:16px}
.steps li{
  list-style:none;counter-increment:s;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 22px 20px 68px;position:relative
}
.steps li:before{
  content:counter(s);position:absolute;left:20px;top:20px;width:32px;height:32px;
  border-radius:50%;background:var(--brand);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:15px
}
.steps b{display:block;margin-bottom:2px}
.steps span{color:var(--muted);font-size:15px}

/* ---------- ตารางราคา ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:520px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--brand-soft);color:var(--brand);font-size:14px;white-space:nowrap}
td:last-child,th:last-child{text-align:right;white-space:nowrap}
tr:last-child td{border-bottom:0}
.note{color:var(--muted);font-size:14px;margin-top:12px}

/* ---------- ผลงาน ---------- */
.work{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:var(--card);box-shadow:var(--shadow);text-decoration:none;color:inherit;display:block
}
.work .ph{
  aspect-ratio:4/3;background:linear-gradient(135deg,var(--brand-soft),#dde6e3);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  font-size:13px;text-align:center;padding:12px
}
.work{transition:transform .15s ease, box-shadow .15s ease}
.work:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(16,24,40,.14)}
.work img{aspect-ratio:4/3;object-fit:cover;width:100%}
.work .meta{padding:16px 18px}
.work .meta b{display:block}
.work .meta small{color:var(--muted)}

.lightbox{
  position:fixed;inset:0;z-index:90;background:rgba(10,15,26,.92);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:24px;cursor:zoom-out
}
.lightbox img{max-width:min(1100px,94vw);max-height:82vh;border-radius:10px;object-fit:contain}
.lightbox .lbcap{color:#e7ebf2;margin-top:14px;font-size:15px;text-align:center}
.lightbox .lbclose{
  position:absolute;top:16px;right:20px;background:transparent;border:0;color:#fff;font-size:34px;line-height:1
}

/* ---------- FAQ ---------- */
details.faq{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 20px;margin-bottom:12px
}
details.faq summary{font-weight:700;cursor:pointer;list-style:none;display:flex;gap:12px;align-items:flex-start}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:after{content:"+";margin-left:auto;color:var(--accent);font-size:22px;line-height:1}
details.faq[open] summary:after{content:"–"}
details.faq .a{color:var(--muted);white-space:pre-line;padding-top:10px;font-size:15px}

/* ---------- แถบชวนติดต่อ ---------- */
.cta{background:var(--brand);color:#fff;border-radius:var(--radius);padding:40px 32px;text-align:center}
.cta h2{color:#fff}
.cta p{opacity:.9;max-width:560px;margin-left:auto;margin-right:auto}

/* ---------- ท้ายเว็บ ---------- */
footer{background:var(--brand-dark);color:#c6cddb;padding:48px 0 28px;font-size:15px}
footer a{color:#c6cddb;text-decoration:none}
footer a:hover{color:#fff;text-decoration:underline}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
footer h4{color:#fff;font-size:15px;margin:0 0 12px;letter-spacing:1px}
footer .flogo{height:86px;width:auto;margin-bottom:14px}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin-bottom:8px}
footer .copy{border-top:1px solid rgba(255,255,255,.12);margin-top:32px;padding-top:18px;font-size:13px;opacity:.7}

/* ---------- แชทบอท ---------- */
#chatBtn{
  position:fixed;right:18px;bottom:18px;z-index:80;background:var(--brand);color:#fff;
  border:0;border-radius:999px;padding:13px 20px;font-weight:700;
  box-shadow:0 8px 24px rgba(16,32,28,.28);display:flex;align-items:center;gap:9px
}
#chatBtn .dot{width:9px;height:9px;border-radius:50%;background:#4ade80;display:inline-block}
#chatBox{
  position:fixed;right:18px;bottom:18px;z-index:81;width:min(370px,calc(100vw - 32px));
  height:min(560px,calc(100vh - 36px));background:var(--card);border-radius:16px;
  box-shadow:0 20px 60px rgba(16,32,28,.3);display:none;flex-direction:column;overflow:hidden
}
#chatBox.open{display:flex}
#chatHead{background:var(--brand);color:#fff;padding:14px 16px;display:flex;align-items:center;gap:10px}
#chatHead b{font-size:15px;letter-spacing:1px}
#chatHead small{display:block;opacity:.8;font-size:12px}
#chatHead .close{margin-left:auto;background:transparent;border:0;color:#fff;font-size:24px;line-height:1}
#chatBody{flex:1;overflow-y:auto;padding:16px;background:var(--bg);display:flex;flex-direction:column;gap:10px}
.msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:15px;white-space:pre-line;line-height:1.6}
.msg.bot{background:var(--card);border:1px solid var(--line);border-bottom-left-radius:4px;align-self:flex-start}
.msg.me{background:var(--brand);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
.quick{display:flex;flex-wrap:wrap;gap:8px}
.quick button{
  background:var(--card);border:1px solid var(--brand);color:var(--brand);
  border-radius:999px;padding:7px 14px;font-size:14px
}
#chatInput{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:var(--card)}
#chatInput input{flex:1;border:1px solid var(--line);border-radius:999px;padding:10px 16px;outline:none}
#chatInput input:focus{border-color:var(--brand)}
#chatInput button{background:var(--brand);color:#fff;border:0;border-radius:50%;width:42px;height:42px;flex:0 0 auto}

/* ---------- จอเล็ก ---------- */
@media (max-width:900px){
  .grid.c3,.grid.c4{grid-template-columns:repeat(2,1fr)}
  footer .cols{grid-template-columns:1fr 1fr}
  .strip{grid-template-columns:repeat(2,1fr)}
  .navtoggle{display:block}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;background:var(--brand);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 12px 16px;
    box-shadow:0 12px 24px rgba(0,0,0,.2)
  }
  .nav.open{display:flex}
  .nav a{padding:12px}
  .nav .btn{margin:8px 0 0}
  .topbar .wrap{position:relative}
}
@media (max-width:620px){
  .section{padding:44px 0}
  .grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr}
  .hero{padding:52px 0 80px}
}