/* Pinnacle Engineering Systems — main stylesheet */
:root {
  --navy-900: #061631;
  --navy-800: #0a2350;
  --navy-700: #123573;
  --blue-600: #1f4fa3;
  --gold-500: #e3b21f;
  --gold-400: #f0c53e;
  --gold-600: #c3940f;
  --ink: #0e1726;
  --ink-2: #3c4758;
  --ink-3: #6a7485;
  --line: #e2e6ec;
  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --radius: 14px;
  --shadow: 0 10px 30px -12px rgba(6, 22, 49, .25);
  --font: "IBM Plex Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-head: "Kanit", var(--font);
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-600); }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.25; margin: 0; color: var(--navy-800); font-weight: 600; }
p { margin: 0; }
.mono { font-family: var(--font-mono); letter-spacing: .02em; }

.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--gold-500); color: var(--navy-900); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 16px; }

:focus-visible { outline: 3px solid var(--gold-500); outline-offset: 3px; border-radius: 4px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px;
  font-family: var(--font-head); font-weight: 500; font-size: 1rem;
  text-decoration: none; border: 2px solid transparent; cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-gold { background: var(--gold-500); color: var(--navy-900); }
.btn-gold:hover { background: var(--gold-400); }
.btn-ghost { border-color: rgba(255,255,255,.55); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-sm { padding: 8px 18px; font-size: .95rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  background: rgba(255,255,255,.92); backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 6px 20px -14px rgba(6,22,49,.4); }
.nav { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 44px; height: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-family: var(--font-head); color: var(--navy-800); font-size: 1.15rem; letter-spacing: .06em; }
.brand-text small { color: var(--ink-3); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.menu { display: flex; align-items: center; gap: 26px; }
.menu a:not(.btn) { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: .96rem; position: relative; }
.menu a:not(.btn)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--gold-500); transform: scaleX(0); transition: transform .2s; }
.menu a:not(.btn):hover { color: var(--navy-800); }
.menu a:not(.btn):hover::after, .menu a.active::after { transform: scaleX(1); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; padding: 10px; }
.menu-toggle span { display: block; height: 2px; background: var(--navy-800); margin: 5px 0; transition: transform .25s, opacity .2s; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; color: #fff; padding: calc(var(--header-h) + 88px) 0 0; overflow: hidden; background: var(--navy-900); }
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(100deg, rgba(6,22,49,.96) 0%, rgba(6,22,49,.85) 42%, rgba(10,35,80,.45) 100%),
    url("/assets/img/hero-conveyor-worker.jpg") center / cover no-repeat;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
}
.hero-inner { position: relative; max-width: 780px; margin-left: max(16px, (100% - 1180px) / 2); }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: .9rem; letter-spacing: .08em; color: rgba(255,255,255,.8); margin-bottom: 18px; }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold-500); box-shadow: 0 0 0 4px rgba(227,178,31,.25); }
.hero h1 { color: #fff; font-size: clamp(2rem, 1.2rem + 3.6vw, 3.6rem); font-weight: 600; }
.hero h1 .gold { color: var(--gold-500); }
.lead { margin-top: 20px; font-size: clamp(1rem, .95rem + .3vw, 1.15rem); color: rgba(255,255,255,.82); max-width: 620px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-tags { list-style: none; padding: 0; margin: 36px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-tags li { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; padding: 5px 12px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; color: rgba(255,255,255,.8); }

.stats {
  position: relative; margin: 72px 0 0; display: grid; grid-template-columns: repeat(4, 1fr);
  background: #fff; color: var(--ink); border-radius: var(--radius) var(--radius) 0 0; box-shadow: var(--shadow);
}
.stats > div { padding: 26px 24px; display: flex; flex-direction: column-reverse; gap: 2px; }
.stats > div + div { border-left: 1px solid var(--line); }
.stats dt { color: var(--ink-3); font-size: .9rem; }
.stats dd { margin: 0; font-family: var(--font-head); font-weight: 600; font-size: 2.1rem; color: var(--navy-800); line-height: 1.1; }
.stats dd span { font-size: 1rem; margin-left: 6px; color: var(--ink-2); font-weight: 500; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy-900); color: rgba(255,255,255,.85); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-head.left { text-align: left; margin-left: 0; }
.section-head h2 { font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.5rem); }
.section-head p:last-child:not(.kicker) { margin-top: 12px; color: var(--ink-3); }
.section-dark .section-head p:last-child { color: rgba(255,255,255,.7); }
.kicker { font-family: var(--font-head); font-size: .95rem; letter-spacing: .08em; text-transform: uppercase; color: var(--gold-600); margin-bottom: 10px; font-weight: 500; }
.section-dark .kicker { color: var(--gold-500); }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: start; }
.about-text h2 { font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.4rem); margin-bottom: 20px; }
.about-text p + p { margin-top: 14px; }
.about-text p { color: var(--ink-2); }
.checks { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 32px; font-weight: 500; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .3em; width: 20px; height: 20px; border-radius: 6px; background: var(--navy-800);
}
.checks li::after { content: ""; position: absolute; left: 7px; top: calc(.3em + 4px); width: 5px; height: 10px; border: solid var(--gold-500); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.company { padding: 28px; }
.company-head { display: flex; gap: 14px; align-items: center; }
.company-head img { width: 64px; height: auto; flex: none; }
.company-head strong { display: block; font-family: var(--font-head); color: var(--navy-800); font-weight: 500; font-size: 1.05rem; line-height: 1.35; }
.company-head span { font-size: .78rem; color: var(--ink-3); letter-spacing: .04em; }

/* ---------- Services ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc { background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.svc:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.svc img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; }
.svc-body { padding: 22px 22px 24px; position: relative; flex: 1; display: flex; flex-direction: column; }
.svc-no { position: absolute; top: -20px; right: 20px; width: 40px; height: 40px; border-radius: 10px; background: var(--gold-500); color: var(--navy-900); display: grid; place-items: center; font-family: var(--font-mono); font-size: .9rem; font-weight: 500; }
.svc h3 { font-size: 1.25rem; margin-bottom: 8px; }
.svc p { color: var(--ink-2); font-size: .95rem; }
.tags { list-style: none; padding: 0; margin: auto 0 0; padding-top: 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font-size: .76rem; padding: 3px 10px; border-radius: 6px; background: #eaf0fa; color: var(--navy-700); font-weight: 500; }

/* ---------- Gallery ---------- */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 220px; gap: 14px; }
.g-item { position: relative; padding: 0; border: 0; border-radius: 12px; overflow: hidden; cursor: zoom-in; background: var(--navy-800); font: inherit; }
.g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s, opacity .3s; }
.g-item:hover img { transform: scale(1.05); opacity: .85; }
.g-item span { position: absolute; left: 0; right: 0; bottom: 0; padding: 30px 14px 12px; text-align: left; color: #fff; font-size: .9rem; font-weight: 500; background: linear-gradient(transparent, rgba(6,22,49,.85)); }
.g-wide { grid-column: span 2; }

/* ---------- Safety ---------- */
.safety { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: start; }
.safety-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.safety-list li { padding: 18px 20px 18px 24px; border-left: 3px solid var(--gold-500); background: rgba(255,255,255,.04); border-radius: 0 10px 10px 0; }
.safety-list h3 { font-size: 1.08rem; margin-bottom: 4px; }
.safety-list p { font-size: .95rem; color: rgba(255,255,255,.72); }
.safety-fig { margin: 0; position: sticky; top: calc(var(--header-h) + 24px); }
.safety-fig .g-item { display: block; width: 100%; background: #fff; }
.safety-fig img { height: auto; }
.safety-fig figcaption { margin-top: 12px; font-size: .88rem; color: rgba(255,255,255,.6); text-align: center; }

/* ---------- Process ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: s; position: relative; }
.steps::before { content: ""; position: absolute; top: 26px; left: 10%; right: 10%; height: 2px; background: repeating-linear-gradient(90deg, var(--gold-500) 0 10px, transparent 10px 18px); }
.steps li { text-align: center; position: relative; }
.step-no { display: grid; place-items: center; width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 50%; background: var(--navy-800); color: #fff; font-family: var(--font-head); font-size: 1.3rem; box-shadow: 0 0 0 6px #fff; position: relative; }
.steps h3 { font-size: 1.1rem; margin-bottom: 6px; }
.steps p { font-size: .92rem; color: var(--ink-2); }

.why { margin-top: 72px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-item { padding: 24px; border-radius: var(--radius); background: var(--bg-alt); border-top: 3px solid var(--navy-800); }
.why-item h3 { font-size: 1.08rem; margin-bottom: 8px; }
.why-item p { font-size: .93rem; color: var(--ink-2); }

/* ---------- Contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start; }
.contact-info h2 { font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.4rem); margin-bottom: 14px; }
.contact-info > p { color: var(--ink-2); }
.contact-list { margin: 28px 0 0; display: grid; gap: 18px; }
.contact-list dt { font-size: .85rem; color: var(--ink-3); }
.contact-list dd { margin: 2px 0 0; font-weight: 500; overflow-wrap: anywhere; }
.contact-list a { color: var(--navy-700); }

.quote { padding: 30px; display: grid; gap: 16px; }
.quote h3 { font-size: 1.3rem; }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote label { display: grid; gap: 6px; font-size: .9rem; font-weight: 500; color: var(--ink-2); }
.quote input, .quote select, .quote textarea {
  font: inherit; font-size: 1rem; color: var(--ink); width: 100%;
  padding: 11px 14px; border: 1px solid #cfd6e0; border-radius: 10px; background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.quote textarea { resize: vertical; min-height: 120px; }
.quote input:focus, .quote select:focus, .quote textarea:focus { outline: none; border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(31,79,163,.15); }
.quote .invalid { border-color: #c62828; }
.form-msg { min-height: 1.2em; font-size: .92rem; color: #c62828; }
.form-msg.ok { color: #1b7f3b; }
.form-note { font-size: .82rem; color: var(--ink-3); text-align: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,.7); padding: 40px 0; font-size: .9rem; }
.footer { display: grid; grid-template-columns: 1fr auto; gap: 20px 32px; align-items: center; }
.footer-brand { display: flex; gap: 12px; align-items: center; }
.footer-brand img { width: 40px; height: auto; background: #fff; border-radius: 8px; padding: 3px; }
.footer-brand strong { display: block; color: #fff; font-weight: 500; }
.footer-brand span { font-size: .8rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-nav a { color: rgba(255,255,255,.75); text-decoration: none; }
.footer-nav a:hover { color: var(--gold-400); }
.copy { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: .82rem; }

/* ---------- Lightbox ---------- */
.lightbox { border: 0; padding: 0; background: transparent; max-width: min(1100px, 94vw); max-height: 92vh; overflow: visible; }
.lightbox::backdrop { background: rgba(6,22,49,.9); }
.lightbox img { max-width: 100%; max-height: 82vh; border-radius: 10px; margin: 0 auto; }
.lightbox p { text-align: center; color: #fff; margin-top: 10px; }
.lb-close { position: absolute; top: -46px; right: 0; width: 40px; height: 40px; border-radius: 50%; border: 0; background: #fff; color: var(--navy-900); font-size: 1.6rem; line-height: 1; cursor: pointer; }

/* ---------- Reveal animation ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .svc, .g-item img, .btn { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .services { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .why { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .steps::before { display: none; }
}

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .menu {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px -20px rgba(6,22,49,.4);
    padding: 8px 16px 20px; transform: translateY(-120%); visibility: hidden; transition: transform .3s, visibility .3s;
  }
  .menu.open { transform: none; visibility: visible; }
  .menu a:not(.btn) { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .menu a:not(.btn)::after { display: none; }
  .menu .btn { margin-top: 16px; }
  .about, .safety, .contact { grid-template-columns: 1fr; gap: 40px; }
  .safety-fig { position: static; max-width: 460px; margin-inline: auto; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats > div:nth-child(3) { border-left: 0; }
  .stats > div:nth-child(n+3) { border-top: 1px solid var(--line); }
}

@media (max-width: 600px) {
  .section { padding: 72px 0; }
  .hero { padding-top: calc(var(--header-h) + 56px); }
  .hero-cta .btn { flex: 1 1 100%; }
  .stats { margin-top: 48px; }
  .stats > div { padding: 18px 16px; }
  .stats dd { font-size: 1.7rem; }
  .services { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 150px; gap: 10px; }
  .g-wide { grid-column: span 2; }
  .steps { grid-template-columns: 1fr; text-align: left; }
  .steps li { display: grid; grid-template-columns: 54px 1fr; column-gap: 16px; text-align: left; }
  .step-no { grid-row: span 2; margin: 0; }
  .why { grid-template-columns: 1fr; }
  .frow { grid-template-columns: 1fr; }
  .quote { padding: 22px; }
  .company { padding: 22px; }
    .footer { grid-template-columns: 1fr; }
  .brand-text small { display: none; }
}