/* =========================================================
   GP MOBILITY — Design tokens
   Industrial / automotive-parts catalog aesthetic.
   ========================================================= */
:root{
  --ink:        #1C1E22;   /* near-black charcoal */
  --ink-soft:   #2B2E34;
  --paper:      #F3F1EB;   /* warm off-white */
  --paper-dim:  #E9E5DA;
  --steel:      #5B6472;   /* secondary grey-blue */
  --steel-dim:  #8A93A0;
  --line:       #D8D3C8;   /* hairline on paper */
  --line-dark:  #3A3D43;   /* hairline on ink */
  --accent:     #E1481F;   /* vermillion-orange */
  --accent-dark:#B53714;
  --accent-tint:#FDE7DE;
  --gold:       #C89B3C;   /* metallic quality accent */

  --font-head: 'Kanit', 'Sarabun', sans-serif;
  --font-body: 'Sarabun', 'Kanit', sans-serif;

  --maxw: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img,svg{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:600;
  margin:0;
  letter-spacing:0.2px;
}
p{ margin:0 0 1em; max-width:68ch; }
.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 28px;
}

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}

/* ---------- focus visibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

/* ---------- Top bar ---------- */
.topbar{
  background:var(--ink);
  color:var(--paper-dim);
  font-size:13.5px;
}
.topbar .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:8px;
  padding-bottom:8px;
  gap:16px;
  flex-wrap:wrap;
}
.topbar .topbar-item{ display:flex; align-items:center; gap:8px; color:var(--steel-dim); }
.topbar .topbar-item strong{ color:var(--paper-dim); font-weight:500; }
.topbar .topbar-item svg{ width:14px; height:14px; flex:none; }
.topbar-links{ display:flex; gap:18px; }

/* ---------- Header / nav ---------- */
header.site-header{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:40;
}
.nav-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 0;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ width:42px; height:42px; flex:none; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text .th{ font-family:var(--font-head); font-weight:600; font-size:19px; letter-spacing:0.5px; }
.brand-text .en{ font-size:11.5px; color:var(--steel); letter-spacing:2px; }

nav.main-nav ul{ display:flex; gap:6px; }
nav.main-nav a{
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  font-weight:500;
  border-radius:2px;
  color:var(--ink-soft);
  border-bottom:2px solid transparent;
}
nav.main-nav a:hover{ color:var(--accent-dark); }
nav.main-nav a.active{ border-bottom:2px solid var(--accent); color:var(--accent-dark); }

.nav-cta{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--accent); color:#fff;
  padding:10px 18px; font-weight:600; font-size:14.5px;
  border-radius:2px;
}
.nav-cta:hover{ background:var(--accent-dark); }

.menu-toggle{
  display:none;
  background:none; border:1px solid var(--line); border-radius:3px;
  width:42px; height:42px; align-items:center; justify-content:center;
  cursor:pointer;
}
.menu-toggle svg{ width:20px; height:20px; }

@media (max-width:860px){
  nav.main-nav{
    position:absolute; left:0; right:0; top:100%;
    background:var(--paper); border-bottom:1px solid var(--line);
    display:none;
    box-shadow:0 12px 24px -18px rgba(0,0,0,.4);
  }
  nav.main-nav.open{ display:block; }
  nav.main-nav ul{ flex-direction:column; padding:8px 28px 18px; gap:2px; }
  nav.main-nav a{ display:block; padding:12px 4px; border-bottom:1px solid var(--line); border-radius:0; }
  nav.main-nav a.active{ border-bottom:1px solid var(--line); border-left:3px solid var(--accent); padding-left:12px; }
  .menu-toggle{ display:inline-flex; }
  .nav-cta{ display:none; }
  .topbar-links{ display:none; }
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--ink);
  color:var(--paper);
  overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% 92%,0 100%);
  padding-bottom:60px;
}
.hero .container{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:40px;
  align-items:center;
  padding-top:64px;
  padding-bottom:20px;
  position:relative;
  z-index:2;
}
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  color:var(--accent);
  font-weight:600; font-size:14.5px;
  margin-bottom:18px;
}
.hero-eyebrow .rule{ width:34px; height:2px; background:var(--accent); }
.hero h1{
  font-size:clamp(32px,4.2vw,52px);
  line-height:1.18;
  margin-bottom:20px;
}
.hero h1 .accent-word{ color:var(--accent); }
.hero p.lead{
  color:var(--steel-dim);
  font-size:17.5px;
  max-width:52ch;
  margin-bottom:30px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:36px; }
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 26px;
  font-weight:600; font-size:15px;
  border-radius:2px;
  border:1px solid transparent;
}
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-dark); }
.btn-ghost{ border-color:var(--line-dark); color:var(--paper); }
.btn-ghost:hover{ border-color:var(--accent); color:var(--accent); }
.hero-stats{
  display:flex; gap:0;
  border-top:1px solid var(--line-dark);
  padding-top:22px;
}
.hero-stats div{ padding-right:32px; margin-right:32px; border-right:1px solid var(--line-dark); }
.hero-stats div:last-child{ border-right:none; margin-right:0; padding-right:0; }
.hero-stats .num{ font-family:var(--font-head); font-size:26px; font-weight:600; color:#fff; }
.hero-stats .lbl{ font-size:13px; color:var(--steel-dim); margin-top:2px; }
.hero-art{ position:relative; }

@media (max-width:900px){
  .hero .container{ grid-template-columns:1fr; padding-top:40px; }
  .hero-art{ order:-1; max-width:320px; margin:0 auto; }
  .hero-stats{ flex-wrap:wrap; row-gap:16px; }
  .hero-stats div{ min-width:40%; }
}

/* ---------- Section framework ---------- */
section{ padding:86px 0; }
section.tight{ padding:56px 0; }
.section-head{ margin-bottom:44px; max-width:680px; }
.section-head .kicker{
  color:var(--accent-dark); font-weight:600; font-size:14px; margin-bottom:10px; display:block;
}
.section-head h2{ font-size:clamp(26px,3vw,36px); margin-bottom:14px; }
.section-head p{ color:var(--steel); font-size:16.5px; }

.on-ink{ background:var(--ink); color:var(--paper); }
.on-ink .section-head p{ color:var(--steel-dim); }
.on-ink h2{ color:var(--paper); }

.hairline{ border-top:1px solid var(--line); }
.on-ink .hairline{ border-top:1px solid var(--line-dark); }

/* ---------- Feature grid ---------- */
.grid{ display:grid; gap:2px; background:var(--line); border:1px solid var(--line); }
.grid.cols-4{ grid-template-columns:repeat(4,1fr); }
.grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.grid.cols-2{ grid-template-columns:repeat(2,1fr); }
.grid > .cell{ background:var(--paper); padding:32px 28px; }
.on-ink .grid{ background:var(--line-dark); border-color:var(--line-dark); }
.on-ink .grid > .cell{ background:var(--ink); }

.cell .icon{ width:38px; height:38px; color:var(--accent); margin-bottom:18px; }
.cell h3{ font-size:18.5px; margin-bottom:10px; }
.cell p{ color:var(--steel); font-size:15.5px; margin-bottom:0; }
.on-ink .cell p{ color:var(--steel-dim); }

@media (max-width:900px){
  .grid.cols-4{ grid-template-columns:repeat(2,1fr); }
  .grid.cols-3{ grid-template-columns:repeat(1,1fr); }
}
@media (max-width:560px){
  .grid.cols-4{ grid-template-columns:1fr; }
  .grid.cols-2{ grid-template-columns:1fr; }
}

/* ---------- Category cards (products overview) ---------- */
.cat-list{ display:flex; flex-direction:column; }
.cat-row{
  display:grid; grid-template-columns:64px 1fr auto; align-items:center; gap:24px;
  padding:26px 4px; border-top:1px solid var(--line);
}
.cat-row:last-child{ border-bottom:1px solid var(--line); }
.cat-row .icon{ width:40px; height:40px; color:var(--accent); }
.cat-row h3{ font-size:19px; margin-bottom:6px; }
.cat-row p{ color:var(--steel); font-size:15px; margin:0; }
.cat-row .tag{ font-size:13px; color:var(--steel-dim); border:1px solid var(--line); padding:6px 12px; white-space:nowrap; }

/* ---------- Steps (legit sequence) ---------- */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; counter-reset:step; }
.step{ position:relative; padding:0 24px 0 0; border-right:1px solid var(--line); }
.step:last-child{ border-right:none; }
.step .step-num{
  font-family:var(--font-head); font-size:34px; font-weight:600; color:var(--accent); opacity:.55;
  margin-bottom:14px; display:block;
}
.step h4{ font-size:16.5px; margin-bottom:8px; }
.step p{ font-size:14.5px; color:var(--steel); }
@media (max-width:860px){
  .steps{ grid-template-columns:1fr 1fr; row-gap:32px; }
  .step{ border-right:none; padding-right:16px; }
}
@media (max-width:520px){ .steps{ grid-template-columns:1fr; } }

/* ---------- Trust / stats strip ---------- */
.strip{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:24px;
  padding:34px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.strip .item{ text-align:left; }
.strip .item .num{ font-family:var(--font-head); font-size:30px; font-weight:600; color:var(--ink); }
.strip .item .lbl{ font-size:13.5px; color:var(--steel); margin-top:4px; }

/* ---------- CTA banner ---------- */
.cta-band{
  background:var(--accent); color:#fff;
  padding:56px 0;
}
.cta-band .container{
  display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
}
.cta-band h2{ font-size:clamp(22px,2.6vw,30px); color:#fff; max-width:520px; }
.cta-band .btn-primary{ background:var(--ink); }
.cta-band .btn-primary:hover{ background:#000; }

/* ---------- Two column (text + art) ---------- */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.split.reverse .art{ order:2; }
@media (max-width:900px){ .split{ grid-template-columns:1fr; gap:32px; } .split .art{ order:-1 !important; max-width:360px; margin:0 auto; } }
.split .eyebrow{ color:var(--accent-dark); font-weight:600; font-size:14px; margin-bottom:12px; display:block; }
.split h2{ margin-bottom:18px; font-size:clamp(24px,3vw,32px); }
.split p{ color:var(--steel); }
.check-list li{ display:flex; gap:12px; margin-bottom:12px; color:var(--ink-soft); font-size:15.5px; }
.check-list svg{ width:18px; height:18px; color:var(--accent); flex:none; margin-top:3px; }

/* ---------- Contact page ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:60px; }
@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; } }
.info-card{ border-top:1px solid var(--line); padding:22px 0; display:flex; gap:18px; }
.info-card .icon{ width:26px; height:26px; color:var(--accent); flex:none; margin-top:2px; }
.info-card h4{ font-size:15.5px; margin-bottom:6px; }
.info-card p{ color:var(--steel); font-size:15px; margin-bottom:0; }

.map-wrap{ border:1px solid var(--line); background:var(--paper-dim); aspect-ratio:4/3; overflow:hidden; }
.map-wrap iframe{ width:100%; height:100%; border:0; filter:grayscale(0.25) contrast(1.05); }

form.contact-form{ display:flex; flex-direction:column; gap:16px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:560px){ .form-row{ grid-template-columns:1fr; } }
.field label{ display:block; font-size:13.5px; font-weight:600; margin-bottom:7px; color:var(--ink-soft); }
.field input, .field textarea, .field select{
  width:100%; padding:12px 14px; font-family:var(--font-body); font-size:15px;
  border:1px solid var(--line); background:#fff; color:var(--ink); border-radius:2px;
}
.field input:focus, .field textarea:focus, .field select:focus{ border-color:var(--accent); }
.field textarea{ resize:vertical; min-height:120px; }
.form-note{ font-size:13px; color:var(--steel-dim); }

/* ---------- Simple content pages (about / privacy) ---------- */
.page-header{
  background:var(--ink); color:var(--paper);
  padding:56px 0 44px;
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
}
.page-header .kicker{ color:var(--accent); font-weight:600; font-size:14px; margin-bottom:12px; display:block; }
.page-header h1{ font-size:clamp(28px,4vw,42px); color:#fff; }
.page-header p{ color:var(--steel-dim); margin-top:14px; max-width:60ch; }

.prose h2{ font-size:22px; margin:44px 0 14px; }
.prose h2:first-child{ margin-top:0; }
.prose h3{ font-size:17.5px; margin:26px 0 10px; }
.prose p{ color:var(--ink-soft); max-width:72ch; }
.prose ul{ margin:14px 0 22px; padding-left:0; }
.prose ul li{ position:relative; padding-left:22px; margin-bottom:10px; color:var(--ink-soft); max-width:72ch; }
.prose ul li::before{ content:""; position:absolute; left:0; top:10px; width:7px; height:7px; background:var(--accent); }
.toc{ border:1px solid var(--line); padding:22px 24px; margin-bottom:40px; }
.toc h4{ font-size:14px; margin-bottom:12px; color:var(--steel); font-weight:600; }
.toc ol{ padding-left:20px; margin:0; }
.toc li{ margin-bottom:7px; font-size:15px; }
.toc a:hover{ color:var(--accent-dark); }

/* ---------- Team / values (about) ---------- */
.value-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--line); border:1px solid var(--line); }
@media (max-width:860px){ .value-row{ grid-template-columns:1fr; } }

.timeline{ position:relative; padding-left:28px; border-left:1px solid var(--line); }
.timeline .t-item{ position:relative; padding-bottom:36px; }
.timeline .t-item:last-child{ padding-bottom:0; }
.timeline .t-item::before{ content:""; position:absolute; left:-33px; top:4px; width:9px; height:9px; background:var(--accent); border-radius:50%; }
.timeline .year{ font-family:var(--font-head); font-weight:600; color:var(--accent-dark); font-size:15px; margin-bottom:6px; }
.timeline h4{ font-size:17px; margin-bottom:6px; }
.timeline p{ color:var(--steel); font-size:15px; }

/* ---------- Footer ---------- */
footer.site-footer{ background:var(--ink); color:var(--steel-dim); padding-top:64px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.1fr; gap:40px; padding-bottom:44px; }
@media (max-width:860px){ .footer-grid{ grid-template-columns:1fr 1fr; row-gap:36px; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-grid h4{ color:var(--paper); font-size:14.5px; margin-bottom:18px; }
.footer-grid ul li{ margin-bottom:11px; font-size:14.5px; }
.footer-grid ul li a:hover{ color:var(--accent); }
.footer-brand{ display:flex; align-items:center; gap:12px; margin-bottom:16px; }
.footer-brand .brand-mark{ width:38px; height:38px; }
.footer-brand .th{ color:var(--paper); font-family:var(--font-head); font-weight:600; font-size:17px; }
.footer-brand .en{ font-size:11px; letter-spacing:2px; color:var(--steel-dim); }
.footer-desc{ font-size:14.5px; max-width:34ch; margin-bottom:18px; }
.social-row{ display:flex; gap:10px; }
.social-row a{
  width:36px; height:36px; border:1px solid var(--line-dark); border-radius:50%;
  display:flex; align-items:center; justify-content:center;
}
.social-row a svg{ width:16px; height:16px; }
.social-row a:hover{ border-color:var(--accent); color:var(--accent); }
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:22px 0; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  font-size:13.5px;
}
.footer-bottom a:hover{ color:var(--accent); }

/* ---------- misc ---------- */
.badge{
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid var(--line); padding:6px 14px; font-size:13px; color:var(--steel);
}
.mt-0{ margin-top:0; }
.text-center{ text-align:center; }