/* ============================================================
   THERMAL ENGINEERING PROJECTS — Main Stylesheet
   Full-width layout, original colour scheme, 4-col footer
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;600;700&family=Oswald:wght@400;500;600&display=swap');

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: 'Open Sans', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: #444;
  background: #fff;
  overflow-x: hidden;
}
img  { max-width: 100%; height: auto; display: block; }
a    { color: #c07b2c; text-decoration: none; transition: color .2s; }
a:hover { color: #e87a1e; text-decoration: underline; }
ul   { list-style: none; }
h1,h2,h3,h4,h5 { font-family: 'Oswald', Arial, sans-serif; font-weight: 500; line-height: 1.25; color: #333; }
h1 { font-size: 2rem;   margin-bottom: 1rem;  color: #c07b2c; }
h2 { font-size: 1.5rem; margin-bottom: .85rem; color: #444; }
h3 { font-size: 1.15rem; margin-bottom: .6rem; color: #555; }
h4 { font-size: 1rem;   margin-bottom: .5rem; }
p  { margin-bottom: .9rem; }
strong { color: #333; }

/* ── Preloader ─────────────────────────────────────────────── */
#preloader {
  position: fixed; inset: 0; background: #fff;
  display: flex; align-items: center; justify-content: center;
  z-index: 9999; transition: opacity .5s ease, visibility .5s ease;
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }
.pre-spinner {
  width: 40px; height: 40px;
  border: 3px solid #ddd; border-top-color: #c07b2c;
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Layout helpers ────────────────────────────────────────── */
/* Inner wrapper caps width and centres content */
.inner { max-width: 1280px; margin: 0 auto; padding: 0 30px; }

/* ── TOP HEADER ────────────────────────────────────────────── */
#top-header {
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  padding: 10px 30px;
  width: 100%;
}
.top-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.header-logo img { height: 60px; width: auto; }
.header-contact  { text-align: right; font-size: 13px; color: #555; line-height: 1.7; }
.header-contact a { color: #555; }
.header-contact a:hover { color: #c07b2c; text-decoration: none; }
.header-phone { font-size: 14px; font-weight: 600; color: #333; display: block; }
.header-email { color: #777; font-size: 12px; display: block; }

/* ── NAVIGATION ────────────────────────────────────────────── */
#site-nav {
  background: #2c2c2c;
  position: sticky; top: 0; z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,.35);
  width: 100%;
}
.nav-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 30px;
}
.nav-menu { display: flex; align-items: stretch; }
.nav-item { position: relative; }
.nav-link {
  display: block; padding: 14px 15px;
  font-family: 'Oswald', Arial, sans-serif;
  font-size: 13px; letter-spacing: .06em; text-transform: uppercase;
  color: #ccc; transition: background .2s, color .2s; white-space: nowrap;
}
.nav-link:hover, .nav-link.active,
.nav-item:hover > .nav-link { background: #c07b2c; color: #fff; text-decoration: none; }

.nav-dropdown {
  position: absolute; top: 100%; left: 0; min-width: 175px;
  background: #333; border-top: 2px solid #c07b2c; display: none; z-index: 1001;
}
.nav-item:hover .nav-dropdown { display: block; }
.nav-dropdown a {
  display: block; padding: 10px 16px;
  font-family: 'Oswald', Arial, sans-serif; font-size: 12px;
  letter-spacing: .05em; text-transform: uppercase; color: #bbb;
  border-bottom: 1px solid #444; transition: background .2s, color .2s;
}
.nav-dropdown a:last-child { border: none; }
.nav-dropdown a:hover { background: #c07b2c; color: #fff; text-decoration: none; }

/* Nav CTA */
.nav-cta { display: flex; align-items: center; gap: 6px; }
.nav-cta-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 12px; border-radius: 3px;
  font-family: 'Oswald', Arial, sans-serif;
  font-size: 12px; font-weight: 500; letter-spacing: .05em; text-transform: uppercase;
  transition: opacity .2s; white-space: nowrap;
}
.nav-cta-btn:hover { opacity: .85; text-decoration: none; }
.nav-cta-btn svg  { width: 14px; height: 14px; fill: currentColor; flex-shrink: 0; }
.btn-wa   { background: #25D366; color: #fff; }
.btn-call { background: #c07b2c; color: #fff; }

/* Hamburger */
.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 10px; flex-direction: column; gap: 5px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: #ccc; border-radius: 2px; transition: all .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Slider ────────────────────────────────────────────────── */
.slider-wrap { position: relative; overflow: hidden; background: #111; width: 100%; }
.slider-wrap img.slide { width: 100%; display: none; animation: fadein .6s ease; }
.slider-wrap img.slide.active { display: block; }
@keyframes fadein { from{opacity:0} to{opacity:1} }
.slider-dots { position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; }
.slider-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,.5); cursor: pointer; border: none; transition: background .2s;
}
.slider-dot.active { background: #fff; }

/* ── Homepage intro ─────────────────────────────────────────── */
.home-intro { padding: 40px 0 32px; width: 100%; background: #fff; }
.home-intro-inner { max-width: 1280px; margin: 0 auto; padding: 0 30px; }
.home-boxes {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 20px;
}
.home-box {
  border: 1px solid #e0e0e0; border-top: 3px solid #c07b2c;
  padding: 22px 20px; background: #fafafa; transition: box-shadow .2s;
}
.home-box:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.home-box h3 {
  font-family: 'Oswald', Arial, sans-serif; font-size: 1rem;
  text-transform: uppercase; letter-spacing: .06em; color: #333; margin-bottom: .5rem;
}
.home-box p  { font-size: 13px; color: #666; margin: 0 0 .75rem; }
.home-box .more-link {
  font-size: 12px; font-family: 'Oswald', Arial, sans-serif;
  letter-spacing: .08em; text-transform: uppercase; color: #c07b2c; font-weight: 600;
}
.home-box .more-link:hover { text-decoration: underline; }

/* ── Clients strip ──────────────────────────────────────────── */
.clients-section {
  background: #f5f5f5; padding: 36px 0;
  border-top: 1px solid #e8e8e8; border-bottom: 1px solid #e8e8e8; width: 100%;
}
.clients-section-inner { max-width: 1280px; margin: 0 auto; padding: 0 30px; }
.clients-section h2 {
  text-align: center; font-size: 1.5rem; color: #333;
  margin-bottom: 24px; text-transform: uppercase; letter-spacing: .08em;
}
.clients-logos {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 20px;
}
.clients-logos img {
  max-height: 55px; width: auto; filter: grayscale(1); opacity: .7; transition: all .25s;
}
.clients-logos img:hover { filter: none; opacity: 1; }

/* ── CTA strip (homepage bottom) ──────────────────────────── */
.cta-strip-wrap { background: #f5f0e8; border-top: 1px solid #e8d8bc; padding: 28px 0; width: 100%; }
.cta-strip { max-width: 1280px; margin: 0 auto; padding: 0 30px; text-align: center; }
.cta-strip h3 { color: #c07b2c; margin-bottom: 8px; font-size: 1.1rem; }
.cta-strip p  { font-size: 14px; color: #555; margin-bottom: 16px; }
.cta-btns { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.cta-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 20px; border-radius: 3px;
  font-family: 'Oswald', Arial, sans-serif;
  font-size: 13px; letter-spacing: .08em; text-transform: uppercase; font-weight: 500;
  transition: opacity .2s;
}
.cta-btn:hover { opacity: .85; text-decoration: none; }
.cta-btn svg   { width: 16px; height: 16px; fill: currentColor; flex-shrink: 0; }
.cta-btn-wa    { background: #25D366; color: #fff; }
.cta-btn-call  { background: #c07b2c; color: #fff; }
.cta-btn-email { background: #2c2c2c; color: #ccc; }

/* ── Inner page layout ──────────────────────────────────────── */
.page-content { padding: 32px 0 48px; width: 100%; }
.page-inner   { max-width: 1280px; margin: 0 auto; padding: 0 30px; }

/* Breadcrumbs */
.breadcrumbs {
  font-size: 12px; color: #888; margin-bottom: 18px;
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
}
.breadcrumbs a { color: #888; }
.breadcrumbs a:hover { color: #c07b2c; }
.breadcrumbs .sep { color: #bbb; }
.breadcrumbs .current { color: #555; }

/* Content body */
.content-body ol, .content-body ul.disc { padding-left: 1.5rem; margin-bottom: .9rem; }
.content-body ol     { list-style: decimal; }
.content-body ul.disc{ list-style: disc; }
.content-body li     { margin-bottom: .3rem; font-size: 14px; color: #555; }
.content-body p      { color: #555; }

/* ── Products listing ───────────────────────────────────────── */
.products-intro ul { list-style: disc; padding-left: 1.4rem; margin: .75rem 0; }
.products-intro ul li { color: #555; margin-bottom: .3rem; }

.product-section-title {
  font-family: 'Oswald', Arial, sans-serif; font-size: .75rem; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase; color: #fff;
  background: #2c2c2c; padding: 7px 14px; display: inline-block; margin: 28px 0 16px;
}
.products-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-bottom: 8px;
}
.product-card {
  border: 1px solid #e0e0e0; padding: 16px; background: #fff;
  transition: box-shadow .2s, border-color .2s;
}
.product-card:hover { box-shadow: 0 3px 12px rgba(0,0,0,.1); border-color: #c07b2c; }
.product-card h3    { font-size: 1rem; color: #333; margin-bottom: .4rem; }
.product-card p     { font-size: 12px; color: #666; margin-bottom: .6rem; }
.product-card .read-more {
  font-size: 11px; font-family: 'Oswald', Arial, sans-serif;
  letter-spacing: .08em; text-transform: uppercase; color: #c07b2c; font-weight: 600;
}
.product-card .read-more:hover { text-decoration: underline; }

/* ── Product detail page ────────────────────────────────────── */
.product-hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 60%, #3a3a3a 100%);
  padding: 36px 30px 32px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid #c07b2c;
}
.product-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.product-hero-inner { max-width: 1280px; margin: 0 auto; position: relative; z-index: 1; }
.product-type-label {
  display: inline-block; padding: 3px 12px; background: #c07b2c;
  font-family: 'Oswald', Arial, sans-serif; font-size: 11px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: #fff;
  margin-bottom: 10px; border-radius: 2px;
}
.product-hero h1 { color: #fff !important; font-size: 2.2rem; margin-bottom: 10px; }
.product-hero p  { color: #bbb; font-size: 14px; max-width: 700px; margin: 0; }

.product-body { max-width: 1280px; margin: 0 auto; padding: 0 30px 40px; }
.product-body h2 { font-size: 1rem; margin-top: 20px; color: #333; }
.product-body ul { list-style: disc; padding-left: 1.4rem; margin: .75rem 0 1rem; }
.product-body ul li { font-size: 14px; color: #555; margin-bottom: .3rem; }

.product-nav-links { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.product-nav-links a {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 8px 16px; background: #2c2c2c; color: #ccc;
  font-family: 'Oswald', Arial, sans-serif; font-size: 12px;
  letter-spacing: .07em; text-transform: uppercase; transition: background .2s, color .2s;
}
.product-nav-links a:hover { background: #c07b2c; color: #fff; text-decoration: none; }

.product-cta {
  background: #f5f0e8; border: 1px solid #e8d8bc;
  padding: 22px 24px; margin-top: 28px; text-align: center; border-radius: 2px;
}
.product-cta h3 { color: #c07b2c; margin-bottom: 8px; font-size: 1.1rem; }
.product-cta p  { font-size: 14px; color: #555; margin-bottom: 14px; }

/* ── Info box ───────────────────────────────────────────────── */
.info-box {
  background: #f8f4ef; border-left: 4px solid #c07b2c; padding: 20px 22px; margin: 28px 0;
}
.info-box h3  { color: #c07b2c; margin-bottom: .6rem; font-size: 1.1rem; }
.info-box p   { font-size: 13px; color: #555; margin-bottom: .6rem; }
.info-box p:last-child { margin: 0; }

/* ── Ancillary ──────────────────────────────────────────────── */
.ancillary-title {
  font-family: 'Oswald', Arial, sans-serif; font-size: 1rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .08em; color: #333; margin: 24px 0 10px;
}
.ancillary-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px; }
.ancillary-list li {
  font-size: 13px; color: #555; padding: 5px 8px 5px 16px;
  position: relative; background: #fafafa; border: 1px solid #eee;
}
.ancillary-list li::before { content: '›'; position: absolute; left: 6px; color: #c07b2c; font-weight: 700; }

/* ── Clients page ───────────────────────────────────────────── */
.clients-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin: 16px 0; }
.clients-list li {
  padding: 8px 12px; font-size: 13px; color: #444; font-weight: 600;
  text-transform: uppercase; letter-spacing: .03em;
  border-bottom: 1px solid #f0f0f0; border-right: 1px solid #f0f0f0;
}
.clients-list li:hover { background: #fdf6ee; color: #c07b2c; }

/* ── Services ───────────────────────────────────────────────── */
.service-block { margin-bottom: 28px; }
.service-block h2 {
  font-size: 1.1rem; color: #c07b2c; text-transform: uppercase; letter-spacing: .05em;
  border-bottom: 1px solid #e0e0e0; padding-bottom: 6px; margin-bottom: 10px;
}
.service-block ol { padding-left: 1.5rem; list-style: decimal; }
.service-block ol li { margin-bottom: .35rem; font-size: 13px; color: #555; }

/* ── Projects page ──────────────────────────────────────────── */
.section-heading {
  font-family: 'Oswald', Arial, sans-serif; font-size: 1.4rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .06em; color: #333;
  border-bottom: 2px solid #c07b2c; padding-bottom: 6px; margin: 24px 0 18px;
}
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.project-item img { width: 100%; border: 1px solid #e0e0e0; transition: opacity .25s; }
.project-item img:hover { opacity: .88; }
.project-item a  { display: block; }
.project-item h3 {
  font-size: .85rem; font-family: 'Oswald', Arial, sans-serif;
  letter-spacing: .04em; color: #555; text-align: center; margin-top: 6px; text-transform: uppercase;
}

/* ── Contact page ───────────────────────────────────────────── */
.contact-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 28px;
}
.contact-card {
  border: 1px solid #e0e0e0; border-top: 3px solid #c07b2c; padding: 20px; background: #fafafa;
}
.contact-card h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .07em; color: #333; margin-bottom: .75rem; }
.contact-card p, .contact-card a { font-size: 13px; color: #555; display: block; line-height: 1.7; }
.contact-card a:hover { color: #c07b2c; }
.contact-card .big-link { font-size: 15px; font-weight: 700; color: #c07b2c; font-family: 'Oswald', Arial, sans-serif; }
.map-wrap { border: 1px solid #e0e0e0; overflow: hidden; margin-top: 6px; }

/* ── Floating CTA ───────────────────────────────────────────── */
.float-cta { position: fixed; right: 16px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 900; }
.float-btn {
  width: 50px; height: 50px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 14px rgba(0,0,0,.3); transition: transform .2s, box-shadow .2s; position: relative;
}
.float-btn:hover { transform: scale(1.1); box-shadow: 0 5px 20px rgba(0,0,0,.35); text-decoration: none; }
.float-btn svg { width: 22px; height: 22px; fill: #fff; }
.float-wa   { background: #25D366; }
.float-call { background: #c07b2c; }
.float-tip {
  position: absolute; right: calc(100% + 10px); top: 50%; transform: translateY(-50%);
  background: #333; color: #fff; font-size: 11px; font-family: 'Oswald', Arial, sans-serif;
  letter-spacing: .06em; text-transform: uppercase; padding: 4px 10px; border-radius: 3px;
  white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .2s;
}
.float-btn:hover .float-tip { opacity: 1; }

/* ── FOOTER ─────────────────────────────────────────────────── */
#site-footer {
  background: #2c2c2c; color: #aaa;
  padding: 36px 30px 0; margin-top: 0; width: 100%;
}
.footer-grid {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.2fr 0.9fr;
  gap: 28px;
  padding-bottom: 28px;
}
.footer-col h4 {
  font-family: 'Oswald', Arial, sans-serif; font-size: .95rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .1em; color: #fff;
  border-bottom: 1px solid #444; padding-bottom: 8px; margin-bottom: 14px;
}
.footer-col p, .footer-col address { font-size: 13px; color: #aaa; line-height: 1.8; font-style: normal; }
.footer-col a { color: #aaa; }
.footer-col a:hover { color: #c07b2c; text-decoration: none; }

.footer-links li { padding: 4px 0; border-bottom: 1px solid #3a3a3a; }
.footer-links li:last-child { border: none; }
.footer-links a { font-size: 13px; color: #aaa; transition: color .2s; }
.footer-links a:hover { color: #c07b2c; text-decoration: none; }
.footer-links a::before { content: '» '; color: #c07b2c; }

/* Footer CTA buttons */
.footer-cta-btns { display: flex; flex-direction: column; gap: 7px; margin-top: 12px; }
.footer-cta-btns a {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 12px; border-radius: 3px;
  font-family: 'Oswald', Arial, sans-serif; font-size: 12px;
  letter-spacing: .06em; text-transform: uppercase; font-weight: 500;
  transition: opacity .2s; text-decoration: none;
}
.footer-cta-btns a:hover { opacity: .85; }
.footer-cta-btns a svg { width: 14px; height: 14px; fill: currentColor; flex-shrink: 0; }
.footer-cta-btns .ftr-wa   { background: #25D366; color: #fff; }
.footer-cta-btns .ftr-call { background: #c07b2c; color: #fff; }
.footer-cta-btns .ftr-call2 { background: #8a6020; color: #fff; }

/* Social Media icons */
.social-icons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.social-icon {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 4px;
  transition: transform .2s, opacity .2s; text-decoration: none;
}
.social-icon:hover { transform: translateY(-3px); opacity: .85; text-decoration: none; }
.social-icon svg { width: 18px; height: 18px; fill: #fff; }
.si-fb    { background: #1877F2; }
.si-tw    { background: #1DA1F2; }
.si-li    { background: #0A66C2; }
.si-yt    { background: #FF0000; }
.si-ig    { background: radial-gradient(circle at 30% 110%, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); }
.si-gp    { background: #DB4437; }

/* Footer bottom bar */
.footer-bottom {
  background: #222; padding: 12px 30px;
  border-top: 1px solid #3a3a3a; margin: 0 -30px;
}
.footer-bottom p {
  max-width: 1280px; margin: 0 auto;
  text-align: center; font-size: 12px; color: #777;
}
.footer-bottom a { color: #777; }
.footer-bottom a:hover { color: #c07b2c; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 900px) {
  .home-boxes { grid-template-columns: 1fr 1fr; }
  .clients-list { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .inner, .home-intro-inner, .clients-section-inner,
  .nav-inner, .top-header-inner, .page-inner, .product-body, .footer-grid { padding: 0 16px; }
  #top-header { padding: 10px 16px; }
  #site-footer { padding: 28px 16px 0; }
  .footer-bottom { padding: 12px 16px; margin: 0 -16px; }
  .top-header-inner { flex-direction: column; align-items: flex-start; gap: .5rem; }
  .header-contact { text-align: left; }
  .nav-inner { padding: 0 16px; }
  .nav-menu {
    display: none; flex-direction: column; width: 100%;
    position: absolute; top: 100%; left: 0; right: 0;
    background: #2c2c2c; border-top: 1px solid #3a3a3a;
    box-shadow: 0 4px 12px rgba(0,0,0,.4);
  }
  .nav-menu.open  { display: flex; }
  .nav-item       { width: 100%; }
  .nav-link       { padding: 13px 18px; border-bottom: 1px solid #3a3a3a; }
  .nav-dropdown   { position: static; display: none; border-top: none; background: #3a3a3a; }
  .nav-item.open .nav-dropdown { display: block; }
  .nav-cta        { display: none; }
  .nav-toggle     { display: flex; }
  .home-boxes     { grid-template-columns: 1fr; }
  .projects-grid  { grid-template-columns: 1fr; }
  .products-grid  { grid-template-columns: 1fr; }
  .footer-grid    { grid-template-columns: 1fr; gap: 20px; }
  h1 { font-size: 1.6rem; }
  .product-hero-inner { padding: 24px 16px 20px; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .product-detail-image img { height: 220px; }
  .product-body { padding: 20px 16px 32px; }
  .cta-strip-wrap { padding: 22px 0; }
}
@media (max-width: 480px) {
  .contact-cards { grid-template-columns: 1fr; }
}