/* ==========================================================================
   THERM Expertise Co., Ltd. — corporate theme
   Engineering Solutions for Your Business
   ========================================================================== */

:root {
  --navy:        #0b2545;
  --navy-700:    #13315c;
  --navy-600:    #1b3b66;
  --steel:       #134074;
  --accent:      #ff7a18;   /* industrial orange */
  --accent-700:  #e2660a;
  --teal:        #2ec4b6;
  --ink:         #1f2933;
  --muted:       #5b6b7b;
  --line:        #e3e8ef;
  --bg:          #ffffff;
  --bg-soft:     #f5f7fa;
  --bg-navy-soft:#eef2f7;
  --white:       #ffffff;
  --radius:      14px;
  --radius-sm:   10px;
  --shadow:      0 10px 30px rgba(11, 37, 69, .10);
  --shadow-sm:   0 4px 14px rgba(11, 37, 69, .08);
  --maxw:        1180px;
  --header-h:    78px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", "Helvetica Neue", "Noto Sans Thai", system-ui, -apple-system, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: "Poppins", "Inter", "Noto Sans Thai", system-ui, sans-serif; line-height: 1.18; color: var(--navy); margin: 0 0 .5em; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); font-weight: 800; letter-spacing: -.02em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 700; }
p  { margin: 0 0 1rem; color: var(--muted); }
a  { color: var(--steel); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section--navy { background: var(--navy); color: #dbe5f1; }
.section--navy h2, .section--navy h3 { color: #fff; }

.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--accent); margin-bottom: .75rem;
}
.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section-head p { font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem; cursor: pointer;
  font-weight: 600; font-size: .98rem; padding: .8rem 1.5rem; border-radius: 999px;
  border: 2px solid transparent; transition: all .2s ease; white-space: nowrap;
}
.btn--primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-700); border-color: var(--accent-700); color:#fff; transform: translateY(-2px); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn--ghost:hover { background: #fff; color: var(--navy); border-color: #fff; }
.btn--outline { background: transparent; color: var(--steel); border-color: var(--line); }
.btn--outline:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line); height: var(--header-h);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand { display: flex; align-items: center; gap: .7rem; }
.brand__mark {
  width: 42px; height: 42px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--navy), var(--steel));
  display: grid; place-items: center; color: #fff; font-weight: 800; font-family: "Poppins", sans-serif;
  box-shadow: var(--shadow-sm);
}
.brand__name { font-family: "Poppins", sans-serif; font-weight: 800; color: var(--navy); line-height: 1; font-size: 1.06rem; letter-spacing: .01em; }
.brand__tag  { display: block; font-size: .68rem; font-weight: 600; color: var(--accent); letter-spacing: .12em; text-transform: uppercase; margin-top: 3px; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a { color: var(--ink); font-weight: 600; font-size: .95rem; padding: .5rem .85rem; border-radius: 8px; }
.nav a:hover, .nav .current-menu-item > a { color: var(--accent); background: var(--bg-soft); }
.header-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; transition: .25s; }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #eaf1fb;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(46,196,182,.18), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(255,122,24,.16), transparent 55%),
    linear-gradient(135deg, var(--navy) 0%, var(--navy-700) 55%, var(--steel) 100%);
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .12; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(700px 400px at 70% 30%, #000, transparent 75%);
}
.hero .container { position: relative; z-index: 1; padding-top: 96px; padding-bottom: 104px; max-width: 920px; text-align: center; }
.hero h1 { color: #fff; }
.hero__sub { font-size: 1.25rem; color: #bcd0ea; margin: 0 auto 1.6rem; max-width: 620px; }
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.hero__stats { display: flex; gap: 48px; justify-content: center; flex-wrap: wrap; margin-top: 56px; }
.hero__stat b { display: block; font-family: "Poppins", sans-serif; font-size: 2rem; color: #fff; }
.hero__stat span { font-size: .85rem; color: #9fb6d6; letter-spacing: .04em; }

/* ---------- Page hero (sub pages) ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--steel) 100%);
  color: #eaf1fb; padding: 76px 0; text-align: center;
}
.page-hero h1 { color: #fff; margin-bottom: .35rem; }
.page-hero p { color: #bcd0ea; max-width: 680px; margin: 0 auto; }
.breadcrumb { font-size: .82rem; color: #8fa9cc; margin-bottom: 1rem; letter-spacing: .03em; }
.breadcrumb a { color: #bcd0ea; }

/* ---------- Feature strip ---------- */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature__icon { width: 50px; height: 50px; border-radius: 12px; background: var(--bg-navy-soft); color: var(--steel); display: grid; place-items: center; margin-bottom: 16px; }
.feature h3 { font-size: 1.08rem; margin-bottom: .35rem; }
.feature p { font-size: .92rem; margin: 0; }

/* ---------- About / split ---------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.about-card {
  background: linear-gradient(135deg, var(--navy), var(--steel)); color: #fff;
  border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow);
}
.about-card .role { color: var(--accent); font-weight: 700; letter-spacing: .04em; }
.about-card .quote { font-size: 1.15rem; font-style: italic; color: #dfe9f7; margin-top: 10px; }
.about-card .signature { margin-top: 26px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.2); }
.about-card .signature b { color: #fff; font-family: "Poppins", sans-serif; }
.about-card .signature span { display: block; color: #acc4e6; font-size: .9rem; }

.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 28px; }
.pillar { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 22px; }
.pillar h4 { color: var(--navy); margin: 0 0 .35rem; font-size: 1.02rem; }
.pillar p { font-size: .9rem; margin: 0; }

/* ---------- Services grid ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease;
  position: relative; overflow: hidden;
}
.service-card::before { content:""; position:absolute; left:0; top:0; height:4px; width:100%; background: linear-gradient(90deg, var(--accent), var(--teal)); opacity:0; transition:.2s; }
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.service-card:hover::before { opacity: 1; }
.service-card .num { font-family:"Poppins",sans-serif; font-weight:800; color: var(--bg-navy-soft); font-size:2.4rem; line-height:1; position:absolute; right:18px; top:14px; }
.service-card .icon { width:54px; height:54px; border-radius:14px; background: linear-gradient(135deg, var(--navy), var(--steel)); color:#fff; display:grid; place-items:center; margin-bottom:18px; }
.service-card h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.service-card p { font-size: .93rem; margin-bottom: 1rem; }
.service-card ul { margin: 0; padding: 0; list-style: none; }
.service-card li { font-size: .88rem; color: var(--muted); padding-left: 22px; position: relative; margin-bottom: 6px; }
.service-card li::before { content: "▸"; color: var(--accent); position: absolute; left: 4px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.tag { font-size: .78rem; font-weight: 600; color: var(--steel); background: var(--bg-navy-soft); padding: 5px 12px; border-radius: 999px; }

/* ---------- Products ---------- */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.product-card__media {
  height: 190px; background: linear-gradient(135deg, var(--bg-navy-soft), #dbe5f1);
  display: grid; place-items: center; color: var(--steel); position: relative;
}
.product-card__media .model { font-family:"Poppins",sans-serif; font-weight:800; font-size:1.5rem; color: var(--navy); }
.product-card__body { padding: 22px 24px 26px; }
.product-card__body h3 { font-size: 1.1rem; margin-bottom: .3rem; }
.product-card .badge { display:inline-block; font-size:.72rem; font-weight:700; letter-spacing:.06em; text-transform:uppercase; color:#fff; background:var(--teal); padding:4px 10px; border-radius:999px; margin-bottom:12px; }
.product-card .badge--soon { background: var(--muted); }

/* ---------- Clients ---------- */
.clients { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.client-chip {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 18px 26px; font-weight: 700; color: var(--navy); box-shadow: var(--shadow-sm);
  min-width: 160px; text-align: center;
}
.client-chip span { display:block; font-size:.78rem; font-weight:500; color:var(--muted); margin-top:3px; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--accent), var(--accent-700));
  color: #fff; border-radius: var(--radius); padding: 52px 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.cta-band h2 { color: #fff; margin: 0 0 .25rem; }
.cta-band p { color: rgba(255,255,255,.92); margin: 0; }
.cta-band .btn--ghost { border-color: #fff; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.info-list { list-style: none; margin: 0; padding: 0; }
.info-item { display: flex; gap: 16px; align-items: flex-start; padding: 18px 0; border-bottom: 1px solid var(--line); }
.info-item:last-child { border-bottom: 0; }
.info-item .ic { width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--bg-navy-soft); color: var(--steel); display: grid; place-items: center; }
.info-item b { display: block; color: var(--navy); font-family: "Poppins", sans-serif; }
.info-item a, .info-item span { color: var(--muted); }

.contact-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .9rem; color: var(--navy); margin-bottom: 7px; }
.field input, .field textarea {
  width: 100%; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font: inherit; color: var(--ink); background: var(--bg-soft); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,122,24,.15); background:#fff; }
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: .82rem; color: var(--muted); margin-top: 10px; }

/* ---------- Generic content (single/page fallback) ---------- */
.entry { max-width: 820px; margin: 0 auto; }
.entry h2 { margin-top: 1.6em; }
.entry img { border-radius: var(--radius-sm); margin: 1.2em 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: #aac1de; padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 1rem; }
.site-footer a { color: #aac1de; }
.site-footer a:hover { color: var(--accent); }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 9px; font-size: .92rem; }
.footer-brand .brand__name { color: #fff; }
.footer-brand p { color: #8ea7c6; font-size: .92rem; margin-top: 12px; max-width: 280px; }
.social { display: flex; gap: 10px; margin-top: 16px; }
.social a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,.08); display: grid; place-items: center; color: #cfe0f4; }
.social a:hover { background: var(--accent); color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 44px; padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .85rem; color: #7f9abb; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .features { grid-template-columns: repeat(2, 1fr); }
  .services, .products { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .nav, .header-actions .btn { display: none; }
  .nav-toggle { display: block; }
  .nav.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: var(--header-h); left: 0; right: 0; background: #fff;
    border-bottom: 1px solid var(--line); padding: 12px 24px 18px; box-shadow: var(--shadow);
  }
  .features, .services, .products, .pillars, .footer-grid { grid-template-columns: 1fr; }
  .hero__stats { gap: 28px; }
  .cta-band { padding: 36px 28px; }
}