:root{--blue:#34369a;--green:#179447;--orange:#f28c28;--ink:#102a43;--muted:#60758a;--pale:#f4f8f7;--line:#dce6e4}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);line-height:1.6;background:#fff}.wrap{max-width:1180px;margin:auto;padding:0 28px}header{position:sticky;top:0;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);z-index:100}.nav{height:88px;display:flex;align-items:center;justify-content:space-between}.brand{height:78px;display:flex;align-items:center}.brand img{width:150px;height:78px;object-fit:contain}.nav nav{display:flex;gap:25px;align-items:center;height:100%}.nav nav>a{position:relative;text-decoration:none;color:var(--ink);font-weight:700;font-size:14px;padding:32px 0 27px}.nav nav>a:not(.cta)::after{content:"";position:absolute;left:0;right:0;bottom:19px;height:3px;background:var(--orange);transform:scaleX(0);transform-origin:center;transition:transform .2s ease;border-radius:2px}.nav nav>a:not(.cta):hover::after,.nav nav>a.active:not(.cta)::after{transform:scaleX(1)}.nav .cta{background:var(--green);color:#fff;padding:11px 18px;border-radius:5px}.nav .cta.active{box-shadow:0 3px 0 var(--orange)}.menu{display:none}.hero{background:linear-gradient(115deg,#f9fbfb,#e9f4f3);padding:82px 0}.hero-grid,.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.eyebrow{font-size:12px;letter-spacing:2.5px;font-weight:800;color:var(--green)}h1{font-size:68px;line-height:1.02;margin:20px 0 24px;letter-spacing:-2px}h1 em{font-style:normal;color:var(--green);position:relative}h1 em:after{content:"";display:block;width:88px;height:5px;background:var(--orange);margin-top:12px;border-radius:4px}h2{font-size:42px;line-height:1.15;margin:14px 0 24px}h3{line-height:1.25}p{color:var(--muted)}.hero p{font-size:18px;max-width:650px}.actions{display:flex;gap:12px;margin:34px 0}.btn{display:inline-block;border:1px solid #b9c9cf;border-radius:5px;padding:13px 20px;text-decoration:none;color:var(--ink);font-weight:800}.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.primary:hover{border-color:var(--orange);box-shadow:inset 0 -3px 0 var(--orange)}.metrics{display:flex;gap:40px;border-top:1px solid var(--line);padding-top:25px}.metrics div{display:flex;flex-direction:column}.metrics b{font-size:22px}.metrics span{font-size:11px;color:var(--muted)}.hero-media{height:430px;position:relative;overflow:hidden;border:1px solid #d5e2e4;background:#0d1d2e;box-shadow:0 16px 36px rgba(16,42,67,.12)}.hero-media video{width:100%;height:100%;display:block;object-fit:cover}.hero-media:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(13,29,46,.6));pointer-events:none}.video-label{position:absolute;z-index:2;left:22px;bottom:17px;color:#fff;font-size:11px;font-weight:800;letter-spacing:1.7px}.video-label span{color:var(--orange)}.section{padding-top:100px;padding-bottom:100px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:42px}.cards article,.knowledge article{border:1px solid var(--line);padding:32px;background:#fff}.cards article{border-top:3px solid transparent;transition:.2s}.cards article:hover{border-top-color:var(--orange);transform:translateY(-2px)}.cards b{color:var(--green)}.dark{background:#172b45;color:#fff;padding:95px 0}.dark h2,.contact h2{color:#fff}.dark p{color:#cbd7df}.dark .eyebrow,.contact .eyebrow{color:#6ed28f}.tags{display:grid;grid-template-columns:1fr 1fr;gap:12px}.tags span{border:1px solid #3d536b;padding:14px 16px;color:#e8eff3}.tags span:hover{border-color:var(--orange)}.knowledge{display:grid;grid-template-columns:1fr 1fr;gap:18px}.knowledge small{color:var(--green);font-weight:bold}.textlink{color:var(--blue);font-weight:bold;text-decoration:none}.textlink:hover{color:var(--orange)}.commerce{padding:90px 0;background:#edf5ef}.productbox{background:#fff;border-top:5px solid var(--orange);padding:30px;display:grid;gap:12px}.productbox span{border-top:1px solid var(--line);padding-top:10px}.lead{font-size:18px}.contact{padding:90px 0;background:var(--blue);text-align:center}.contact p{color:#e1e4ff;max-width:720px;margin:0 auto 30px}.white{background:#fff;border-color:#fff;color:var(--blue)}.white:hover{border-color:var(--orange);box-shadow:inset 0 -4px 0 var(--orange)}footer{background:#0d1d2e;color:#fff;padding:34px 0}.foot{display:flex;align-items:center;justify-content:space-between;gap:25px}.footer-brand{width:170px;height:92px;display:flex;align-items:center;justify-content:center}.foot img{width:165px;height:90px;object-fit:contain;filter:drop-shadow(0 2px 1px rgba(255,255,255,.12))}.foot p{color:#aab9c6;font-size:13px}@media(max-width:800px){html{scroll-padding-top:76px}.nav{height:76px}.brand{height:70px}.brand img{width:125px;height:68px}.nav nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;padding:18px 28px 25px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line);height:auto;gap:4px}.nav nav.open{display:flex}.nav nav>a{padding:10px 0}.nav nav>a:not(.cta)::after{bottom:4px}.nav .cta{padding:10px 18px;margin-top:5px}.menu{display:block;border:0;background:none;font-size:24px}.hero{padding:55px 0}.hero-grid,.split{grid-template-columns:1fr;gap:35px}h1{font-size:46px}h2{font-size:34px}.hero-media{height:320px}.cards,.knowledge{grid-template-columns:1fr}.metrics{gap:18px;flex-wrap:wrap}.foot{flex-direction:column;text-align:center}.tags{grid-template-columns:1fr}.footer-brand{height:85px}}

/* MortarChem logo sizing refinement */
.brand {
  height: 82px;
}
.brand img {
  width: 205px;
  height: 82px;
  object-fit: contain;
  object-position: left center;
}

.footer-brand {
  width: 230px;
  height: 115px;
}
.foot img {
  width: 220px;
  height: 110px;
  object-fit: contain;
  object-position: left center;
  filter: drop-shadow(0 1px 1px rgba(255,255,255,.16));
}

@media(max-width:800px){
  .brand {
    height: 68px;
  }
  .brand img {
    width: 160px;
    height: 66px;
  }
  .footer-brand {
    width: 200px;
    height: 105px;
  }
  .foot img {
    width: 195px;
    height: 100px;
    object-position: center;
  }
}

/* Services cards refinement */
#services .cards article {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  box-shadow: 0 4px 14px rgba(13, 41, 66, 0.06);
}

#services .cards article:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 28px rgba(13, 41, 66, 0.13);
  border-top-color: var(--orange);
}
/* Knowledge Center refinement */
#knowledge {
  padding-top: 75px;
  padding-bottom: 75px;
}

#knowledge .split {
  align-items: start;
}

#knowledge .split > div:first-child {
  padding-top: 32px;
}

#knowledge .knowledge {
  gap: 16px;
}

#knowledge .knowledge article {
  padding: 28px;
}

/* Knowledge cards refinement */
#knowledge .knowledge article {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  box-shadow: 0 4px 14px rgba(13, 41, 66, 0.06);
}

#knowledge .knowledge article:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 28px rgba(13, 41, 66, 0.13);
  border-top-color: var(--orange);
}

/* Final header fix */
header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  z-index: 99999 !important;
  transform: none !important;
  visibility: visible !important;
  opacity: 1 !important;
}

body {
  padding-top: 88px;
}

main section[id] {
  scroll-margin-top: 88px;
}

/* MortarChem Contact Form */

#contactForm {
  max-width: 760px;
  margin: 35px auto 0;
}

#contactForm .contact-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

#contactForm input,
#contactForm select,
#contactForm textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 15px 16px;
  border: 1px solid #d5dce5;
  border-radius: 6px;
  background: #ffffff;
  color: #172d47;
  font: inherit;
  font-size: 15px;
}

#contactForm input::placeholder,
#contactForm textarea::placeholder {
  color: #65758a;
}

#contactForm select,
#contactForm textarea {
  grid-column: 1 / -1;
}

#contactForm textarea {
  min-height: 150px;
  resize: vertical;
}

#contactForm input:focus,
#contactForm select:focus,
#contactForm textarea:focus {
  outline: 2px solid #38a169;
  outline-offset: 1px;
}

#contactForm button {
  cursor: pointer;
  min-width: 180px;
}

.contact a[href^="mailto:"] {
  color: #ffffff;
  text-decoration: underline;
}

@media (max-width: 600px) {
  #contactForm .contact-fields {
    grid-template-columns: 1fr;
  }

  #contactForm input,
  #contactForm select,
  #contactForm textarea {
    grid-column: 1;
  }
}
/* MortarChem Contact Form Layout */

#contact {
  text-align: center;
}

#contact .wrap {
  max-width: 1100px;
  margin: 0 auto;
}

#contactForm {
  max-width: 950px;
  margin: 35px auto 0;
}

#contactForm .contact-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 25px;
}

#contactForm input,
#contactForm select,
#contactForm textarea {
  box-sizing: border-box;
  display: block;
  width: 100%;
  min-width: 0;
  padding: 15px 16px;
  border: 1px solid #d7dfe8;
  border-radius: 6px;
  background: #ffffff;
  color: #172b45;
  font: inherit;
  font-size: 15px;
}

#contactForm textarea {
  grid-column: 1 / -1;
  min-height: 160px;
  resize: vertical;
}

#contactForm input:focus,
#contactForm select:focus,
#contactForm textarea:focus {
  outline: 2px solid #ff902f;
  outline-offset: 1px;
}

#contactForm button {
  padding: 15px 38px;
  cursor: pointer;
}

@media (max-width: 650px) {
  #contactForm .contact-fields {
    grid-template-columns: 1fr;
  }

  #contactForm textarea {
    grid-column: auto;
  }
}

/* Contact form submit button */

#contactForm button[type="submit"] {
  background: #ffffff;
  color: #243a86;
  border: 2px solid #ffffff;
  border-radius: 6px;
  transition: background-color 0.2s ease,
              color 0.2s ease;
}

#contactForm button[type="submit"]:hover {
  background: #dff5e8;
  color: #146c43;
}

#contactForm button[type="submit"].email-ready {
  background: #16834a;
  color: #ffffff;
  border-color: #16834a;

/* Mobile Navigation - Final Layout */
@media (max-width: 800px) {

  header nav {
    display: none !important;
    width: 100%;
  }

  header nav.open {
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    height: auto;
    padding: 16px 24px;
    margin: 0;
    box-sizing: border-box;
  }

  header nav.open a {
    display: block;
    padding: 10px 12px;
    margin: 0;
    line-height: 1.4;
  }
}

/* Mobile navigation left spacing */
@media (max-width: 800px) {
  header nav.open {
    padding-left: 60px !important;
    padding-right: 24px !important;
    box-sizing: border-box;
  }
}

/* Mobile navigation spacing */
@media (max-width: 800px) {
  header nav.open {
    padding-left: 20px;
    box-sizing: border-box;
  }
}


/* Home Showcase - Centered Image */
.home-showcase {
    display: block;
    width: calc(100% - 40px);
    max-width: 1000px;
    margin: 40px auto !important;
    padding: 0;
    box-sizing: border-box;
}

.home-showcase img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 18px;
}