:root {
  --blue: #08135e;
  --blue2: #03082f;
  --orange: #ff5a1f;
  --light: #f5f7ff;
  --dark: #111827;
}

body {
  font-family: Arial, sans-serif;
  overflow-x: hidden;
  color: var(--dark);
}

.topbar {
  background: var(--blue2);
  color: #fff;
  padding: 13px 0;
  font-size: 14px;
}

.nav-link .active {
  color: var(--orange);
}

.topbar i {
  color: var(--orange);
  margin-right: 7px;
}

.navbar {
  background: #fff;
  padding: 18px 0;
  box-shadow: 0 10px 40px rgba(0,0,0,.08);
}

.navbar-brand img {
  width: 180px;
}

.nav-link {
  font-weight: 700;
  margin: 0 6px;
  color: var(--blue);
}

.nav-link:hover {
  color: var(--orange);
}

.btn-main {
  background: var(--orange);
  padding: 13px 28px;
  border-radius: 50px;
  color: #fff;
  font-size: 40px;
  font-weight: 700;
  border: none;
}

.btn-main2 {
  background: var(--orange);
  padding: 13px 28px;
  border-radius: 50px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  border: none;
}

.btn-main:hover {
  background: var(--blue);
  color: #fff;
}

.hero {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/air-duct-cleaning.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}


@keyframes zoomHero {
  from { background-size: 110%; }
  to { background-size: 130%; }
}

.hero:after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -10%;
  width: 120%;
  height: 160px;
  background: white;

  border-radius: 50% 50% 0 0;
}

.hero-content {
  position: relative;
  z-index: 50;
  max-width: 760px;
  animation: fadeUp 1s ease;
}

.residential {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/residential.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.vent {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/air-vent.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.furnace {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/furnace.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.ac-repair {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/ac-repair.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.filter {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/air-filter.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.duct {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/duct-sealing.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.location {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/location.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.contact {
  min-height: 850px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(3,8,47,.95), rgba(8,19,94,.72), rgba(255,90,31,.12)),
    url("../img/cont.webp");
  background-position: center;
  background-size: 120%;
  animation: zoomHero 12s infinite alternate ease-in-out;
  color: #fff;
}

.mini {
  display: inline-block;
  background: rgba(255,255,255,.1);
  padding: 10px 20px;
  border-radius: 30px;
  margin-bottom: 25px;
  border: 1px solid rgba(255,255,255,.3);
}

.hero h1 {
  font-size: 55px;
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 20px;
}

.duct h1 {
  font-size: 45px;
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero p {
  font-size: 20px;
  margin-bottom: 30px;
  max-width: 650px;
}

.services-overlap {
  margin-top: -140px;
  position: relative;
  z-index: 999;
  padding-bottom: 100px;
}

.services-overlap span {
  font-size: 25px;
}

.service-box {
  background: #fff;
  padding: 45px;
  border-radius: 10px;
  box-shadow: 0 25px 50px rgba(0,0,0,.08);
  transition: .4s;
  height: 100%;
}

.service-box:hover {
  transform: translateY(-15px);
}

.active-card {
  background: var(--orange);
  color: #fff;
  transform: translateY(-30px);
}

.icon {
  width: 75px;
  height: 75px;
  border-radius: 50%;
  background: #eef2ff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  color: var(--orange);
}

.active-card .icon {
  background: #fff;
}

.section {
  padding: 50px 0;
}

.section-img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 25px 50px rgba(0,0,0,.15);
}

.sub {
  font-weight: 800;
  color: var(--orange);
  letter-spacing: 1px;
  text-transform: uppercase;
}

h2 {
  font-size: 48px;
  font-weight: 900;
  color: var(--blue);
  margin: 20px 0;
}

p {
  line-height: 1.8;
  font-size: 17px;
}

.image-text {
  background: #fff;
}

.text-only {
  background: var(--light);
  text-align: center;
}

.center-content {
  max-width: 900px;
  margin: auto;
}

.bg-image {
  background:
    linear-gradient(rgba(3,8,47,.86), rgba(3,8,47,.86)),
    url("../img/back-air.webp");
  background-size: cover;
  background-position: center;
  color: #fff;
}

.bg-image2 {
  background:
    linear-gradient(rgba(3,8,47,.86), rgba(3,8,47,.86)),
    url("../img/back-furnace.webp");
  background-size: cover;
  background-position: center;
  color: #fff;
}

.bg-image3 {
  background:
    linear-gradient(rgba(3,8,47,.86), rgba(3,8,47,.86)),
    url("../img/back-filter.webp");
  background-size: cover;
  background-position: center;
  color: #fff;
}

.bg-image4 {
  background:
    linear-gradient(rgba(3,8,47,.86), rgba(3,8,47,.86)),
    url("../img/back-ac.webp");
  background-size: cover;
  background-position: center;
  color: #fff;
}

.bg-image5 {
  background:
    linear-gradient(rgba(3,8,47,.86), rgba(3,8,47,.86)),
    url("../img/back-duct.webp");
  background-size: cover;
  background-position: center;
  color: #fff;
}

.bg-image h2,
.bg-image p {
  color: #fff;
}

.bg-content {
  max-width: 800px;
}

.cards-section {
  background: #fff;
}

.title-box {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 55px;
}

.info-card {
  background: var(--light);
  padding: 45px;
  height: 100%;
  border-radius: 14px;
  border-bottom: 6px solid var(--orange);
  transition: .4s;
}

.info-card:hover {
  transform: translateY(-12px);
  background: var(--blue);
  color: #fff;
}

.info-card:hover h4 {
  color: #fff;
}

.info-card i {
  font-size: 42px;
  color: var(--orange);
  margin-bottom: 20px;
}

.info-card h4 {
  color: var(--blue);
  font-weight: 900;
}

.reverse {
  background: var(--light);
}

.dark-text {
  /* background: var(--blue); */
  background-image: url(../img/back-blue.webp);
  background-position: center;
  background-repeat: no-repeat;
  color: #fff;
  text-align: center;
}

.dark-text h2 {
  color: #fff;
}

.maintenance {
  background: #fff;
}

.coupon-box {
  background: linear-gradient(135deg, var(--orange), #ff7a38);
  color: #fff;
  padding: 55px;
  border-radius: 16px;
  box-shadow: 0 25px 50px rgba(255,90,31,.25);
}

.coupon-box h3 {
  font-size: 42px;
  font-weight: 900;
}

.last-text {
  background: var(--light);
}

.contact {
  background: var(--blue2);
  color: #fff;
}

.contact h3 {
  font-size: 30px;
  padding: 10px 0;
  color: #fff;
}

.contact a {
  color: #fff;
  text-decoration: none;
}

.contact i {
  color: var(--orange);
  margin-right: 8px;
}

.contact-box {
  background: #fff;
  padding: 35px;
  border-radius: 12px;
}

.contact-box input,
.contact-box textarea {
  margin-bottom: 15px;
  padding: 14px;
}

footer {
  background: #020628;
  padding: 40px;
  color: #fff;
  text-align: center;
}

footer img {
  width: 180px;
  background: #fff;
  padding: 10px;
  border-radius: 10px;
  margin-bottom: 15px;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media(max-width:768px) {
  .hero h1 {
    font-size: 35px;
  }

  .hero {
    min-height: 520px;
    background-size: cover;
    animation: none;
  }

  .hero-content {
  position: relative;
  z-index: 50;
  padding-top: 50px;
  min-height: 520px;
  
}

  .services-overlap {
    margin-top: -60px;
  }

  .active-card {
    transform: none;
  }

  h2 {
    font-size: 32px;
  }

  .section {
    padding: 70px 0;
  }
}

/* form */
.CUS{
  
  padding: 0;
  border-radius: 30px;
}

.CUS p{
  padding: 0;
 }

form.CUS input.subject {
    display: none;
}

.CUS .form-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.CUS .form-row p {
    flex: 1;
    margin: 0;
}

.CUS textarea {
    width: 100%;
    font-size: 15px;
    border: 1px solid #020202;
    box-sizing: border-box;
    border: 1px solid #d4d4d4;
    background-color: #f0f0f0;
}

.CUS .submit {
    width: 100%;
    font-size: 15px;
    box-sizing: border-box;
    border: 1px solid #d4d4d4;
    background-color: #ff5a1f;
    color: #161515;
}

.CUS input,
.CUS select {
    width: 100%;
    font-size: 15px;
     border: 1px solid #d4d4d4;
    box-sizing: border-box;
    font-weight: normal;
    padding: 10px;
    margin: 5px 0;
    background-color: #f0f0f0;

}

.CUS label {
    font-size: 15px;
    display: block;
    margin-top: 10px;
    font-weight: bold;
    text-align: left;
    color: #3b3b3b;
}


form.CUS,
.CUS fieldset {
    border: none;
}


@media only screen and (max-width:500px){
    .CUS .form-row {
        flex-direction: column;  
        align-items: stretch;    
    }

    .CUS .form-row p {
        flex: 1 0 100%;
        width: 100%;
    }
 } 

 /* locations */
 .locations-wrapper {
  width: 70%;
  margin: 0 auto;
  padding: 50px 0;
}

.locations-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 15px;
}

.location-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 55px;
  padding: 12px 15px;
  text-align: center;
  text-decoration: none;
  color: #222;
  background: #f8f8f8;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.location-item:hover {
  background: #ff5a1f;
  color: #050505;
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.location-item:active {
  transform: scale(0.98);
}