@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700;900&family=Manrope:wght@400;800&display=swap');

:root {
  --primary-blue: #0647a9;
  --primary-green: #a0cd34;
  --bg-light: #f7fafd;
  --text-color: #122d4e;
  --radius-xl: 36px;
  --header-bg: #fff;
  --menu-blue: #18509a;
  --menu-hover: #fff;
  --menu-hover-bg: #18509a;
  --underline-color: linear-gradient(90deg, #1e92e4 75%, #5ed6a3 100%);
  --mobile-menu-bg: rgba(10,28,56,0.93);
  --logo-glass: linear-gradient(120deg, #eaf7ff 50%, #e3ffe8 120%);
}

body {
  font-family: 'Manrope', 'Montserrat', Arial, sans-serif;
  margin: 0;
  background: var(--bg-light);
  color: var(--text-color);
}
a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color .16s;
}
a:hover { color: var(--primary-green);}
img { max-width: 100%; display: block; }

DERRRRRRRRRRRRRRRRRRRRRRR

.site-header.super-premium-header {
  background: #fff;
  box-shadow: 0 10px 38px #18509a17, 0 1.5px 12px #a0cd3433;
  border-radius: 0 0 48px 48px;
  min-height: 108px;
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: flex-end;
  margin-bottom: 0;
}

.header-inner {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  min-height: 108px;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 76px;
  min-width: 110px;
}

.logo-glass {
  width: 74px;
  height: 74px;
  background: linear-gradient(120deg, #eaf7ff 60%, #e3ffe8 140%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 26px #a0cd3440;
  border: 2.5px solid #f7fafd;
}

.logo-img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: contain;
  background: #fff;
  border: none;
  box-shadow: 0 2px 10px #b4d8f818;
}

.main-nav ul {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: #18509a;
  font-family: 'Manrope', 'Montserrat', Arial, sans-serif;
  font-size: 1.13rem;
  font-weight: 700;
  padding: 13px 30px 12px 30px;
  border-radius: 22px;
  background: none;
  border: none;
  outline: none;
  transition:
    color .14s,
    background .18s,
    box-shadow .12s,
    transform .16s;
  position: relative;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: none;
}

.nav-link:after {
  content: "";
  display: block;
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: 8px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, #1e92e4 75%, #5ed6a3 100%);
  opacity: 0;
  transform: scaleX(0.2);
  transition: all .27s cubic-bezier(.72,.01,.22,1.13);
  z-index: 2;
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: #18509a;
  background: linear-gradient(90deg,#0647a9 70%,#a0cd34 100%);
  box-shadow: 0 4px 18px #1e92e420;
  transform: translateY(-2px) scale(1.11);
}

.nav-link:hover:after,
.nav-link.active:after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-link:active { opacity: .86; }

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 54px;
  height: 54px;
  background: transparent;
  border: none;
  border-radius: 15px;
  cursor: pointer;
  align-items: center;
  margin-left: 12px;
  z-index: 122;
  transition: background .15s;
}

.burger span {
  display: block;
  width: 31px;
  height: 4.4px;
  background: #18509a;
  border-radius: 3px;
  transition: all .21s cubic-bezier(.7,.2,.2,1.3);
}
.burger.active span:nth-child(1) { transform: translateY(11px) rotate(45deg);}
.burger.active span:nth-child(2) { opacity: 0;}
.burger.active span:nth-child(3) { transform: translateY(-11px) rotate(-45deg);}
.burger:hover { background: #eaf7fe; }
.menu-overlay { display: none; }
.menu-overlay.active {
  display: block;
  position: fixed;
  z-index: 120;
  inset: 0;
  background: rgba(10,28,56,0.93);
  animation: fadein .16s;
  cursor: pointer;
  opacity: .90;
}
@media (max-width: 1100px) {
  .burger { display: flex; }
  .main-nav {
    position: fixed;
    top: 0; right: 0;
    background: #fff;
    box-shadow: -8px 2px 38px #0e4a8921;
    border-radius: 0 0 0 28px;
    width: 89vw;
    max-width: 340px;
    height: 100vh;
    transform: translateX(112%);
    transition: transform .28s cubic-bezier(.7,.2,.2,1.1);
    z-index: 130;
    padding: 86px 0 0 0;
    display: block;
  }
  .main-nav.open { transform: translateX(0%);}
  .main-nav ul {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
    padding: 56px 34px;
  }
  .header-inner {
    flex-direction: row;
    gap: 4px;
    justify-content: space-between;
    padding: 0 2vw;
    min-height: 62px;
  }
  .logo-glass { width: 54px; height: 54px;}
  .logo-img { width: 36px; height: 36px;}
  .menu-overlay { display: none; }
  .menu-overlay.active { display: block;}
}
@media (max-width: 600px) {
  .header-inner { padding: 0 1vw; }
  .main-nav { max-width: 100vw;}
}
@keyframes fadein {
  from { opacity:0; }
  to { opacity:1; }
}


/* Fadein animation */
@keyframes fadein {
  from { opacity:0; }
  to { opacity:1; }
}

/* HERO ΘΕΡΜΑΝΣΗΣ */
.heating-hero-section {
  background: linear-gradient(110deg,#f6fafd 70%,#a0cd3420 100%);
  min-height: 480px;
  padding: 130px 0 100px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 0 8px 38px #a0cd3415;
}
.heating-hero-flex {
  display: flex;
  align-items: center;
  gap: 56px;
  max-width: 1250px;
  margin: 0 auto;
  width: 95vw;
  justify-content: space-between;
}
.heating-hero-text {
  max-width: 520px;
  flex: 1 1 340px;
  z-index: 2;
}
.main-hero-title {
  font-family: 'Manrope', 'Montserrat', Arial, sans-serif;
  font-size: 3.15rem;
  font-weight: 900;
  color: #082850;
  letter-spacing: -1.5px;
  margin-bottom: 34px;
  line-height: 1.1;
}
.hero-highlight {
  background: linear-gradient(90deg,#0647a9 50%,#a0cd34 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
  font-weight: 900;
  font-size: 1.11em;
  display: inline-block;
}
.hero-desc {
  font-size: 1.29rem;
  color: #285489;
  font-family: 'Montserrat', Arial, sans-serif;
  margin-bottom: 36px;
  line-height: 1.64;
  font-weight: 600;
}
.hero-btn {
  font-size: 1.09rem;
  padding: 13px 32px 12px 32px;
  border-radius: 27px;
  font-weight: 900;
  box-shadow: 0 6px 28px #a0cd3422;
  background: linear-gradient(90deg,#0647a9 60%,#a0cd34 100%);
  color: #fff;
  transition: background .14s, color .13s;
  border: none;
}
.hero-btn:hover {
  background: linear-gradient(90deg,#a0cd34 50%,#0647a9 100%);
  color: #fff;
}

.heating-hero-img-wrap {
  position: relative;
  flex: 1 1 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 300px;
  max-width: 600px;
}
.heating-hero-img-bg {
  position: absolute;
  top: 10px; left: 0; right: 0; bottom: 10px;
  background: radial-gradient(circle at 70% 50%,#a0cd342c 0%,transparent 76%);
  z-index: 0;
  border-radius: 44px;
}
.heating-hero-img {
  max-width: 520px;
  width: 100%;
  min-height: 300px;
  border-radius: 44px;
  box-shadow: 0 12px 32px #a0cd3440;
  position: relative;
  z-index: 1;
  background: #fff;
  object-fit: cover;
}
@media (max-width: 900px) {
  .heating-hero-section { padding:70px 0 50px 0; min-height:280px;}
  .heating-hero-flex { flex-direction: column; gap: 26px;}
  .heating-hero-img { max-width: 92vw;}
  .main-hero-title { font-size:1.55rem;}
  .hero-desc { font-size:1.07rem;}
}

/* ΚΑΤΗΓΟΡΙΕΣ */
.heating-categories-section {
  background: #fff; padding: 62px 0 40px 0; text-align: center;
}
.categories-row {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 36px;
  max-width: 1200px;
  margin: 38px auto 0 auto;
  flex-wrap: wrap;
}
.category-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #f7fafd;
  border-radius: 34px;
  box-shadow: 0 2px 16px #a0cd3416;
  padding: 46px 24px 32px 24px;
  min-width: 190px; max-width: 260px; flex: 1 1 210px;
  text-align: center;
  border-top: 6px solid var(--border,#a0cd34);
  cursor: pointer;
  font-family: 'Montserrat', 'Manrope', Arial, sans-serif;
  font-size: 1.08rem;
  font-weight: 800;
  transition: box-shadow .19s, transform .18s, border .13s;
  position:relative;
  text-decoration: none;
  color: #092144;
}
.category-tile img { height: 58px; margin-bottom: 18px;}
.category-tile span { margin-top: 10px; display:block;}
.category-tile:hover {
  box-shadow: 0 8px 40px #a0cd3440, 0 2px 24px #0647a91b;
  transform: translateY(-10px) scale(1.06) rotate(-1.5deg);
  border-top: 7px solid var(--border,#a0cd34);
  color: var(--primary-green);
}

/* CTA */
.heating-contact-cta {
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(100deg, #eaf3fc 80%, #a0cd3421 100%);
  padding: 80px 0 66px 0;
}
.super-cta {
  background: linear-gradient(120deg, #fff 80%, #eaf3fc 100%);
  padding: 48px 42px 42px 42px;
  border-radius: 54px;
  box-shadow: 0 12px 48px #a0cd3433, 0 1.5px 0 #fff9;
  text-align: center;
  max-width: 530px;
  margin: 0 auto;
}
.cta-title-xl {
  font-size: 2.08rem;
  font-weight: 900;
  margin-bottom: 18px;
  margin-top: 0;
  letter-spacing: -0.03em;
}
.cta-desc-xl {
  font-size: 1.15rem;
  color: #285489;
  font-weight: 600;
  margin-bottom: 26px;
  margin-top: 0;
  line-height: 1.6;
}
.cta-big {
  font-size: 1.18rem;
  padding: 17px 36px;
  border-radius: 32px;
  font-weight: 900;
  box-shadow: 0 8px 30px #a0cd3422;
  background: linear-gradient(90deg,#0647a9 60%,#a0cd34 100%);
  color: #fff;
  border: none;
  transition: background .14s, color .13s;
}
.cta-big:hover {
  background: linear-gradient(90deg,#a0cd34 50%,#0647a9 100%);
  color: #fff;
}

/* FOOTER */
.site-footer.energy-footer {
  background: #fff;
  border-radius: 28px 28px 0 0;
  box-shadow: 0 -4px 28px #1e93e516, 0 -1.5px 12px #5ed6a317;
  margin-top: 90px;
  padding: 38px 0 18px 0;
  font-family: var(--menu-font);
}
.energy-footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 5vw;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.energy-footer-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  flex-wrap: wrap;
}
.energy-footer-logo-link {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}
.energy-footer-logo-glass {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(120deg, #eaf7ff 60%, #e3ffe8 130%);
  box-shadow: 0 4px 14px #b4e0ff25;
  border: 2px solid #f4fafd;
  display: flex;
  align-items: center;
  justify-content: center;
}
.energy-footer-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: contain;
  background: #fff;
  border: none;
  box-shadow: 0 2px 7px #b4d8f818;
}
.energy-footer-title {
  font-size: 1.26rem;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 900;
  color: #174777;
  letter-spacing: 0.02em;
}
.energy-footer-links {
  display: flex;
  gap: 17px;
  flex-wrap: wrap;
}
.energy-footer-link {
  color: #18509a;
  text-decoration: none;
  font-size: 1.07rem;
  font-weight: 700;
  margin-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: border-color .18s, color .13s;
  padding-bottom: 1px;
  display: inline-block;
}
.energy-footer-link:hover {
  color: #5ed6a3;
  border-color: #5ed6a3;
}
.energy-footer-copy {
  margin-top: 9px;
  font-size: 1.04rem;
  color: #19508b;
  opacity: 0.92;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.energy-footer-sep {
  color: #dde7f2;
  font-size: 1.1em;
  margin: 0 7px;
  font-weight: bold;
  opacity: 0.7;
}
.energy-footer-apmedia {
  color: #18509a;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.02em;
  letter-spacing: 0.01em;
  transition: color .16s;
  opacity: 0.84;
  border-bottom: 2px dotted #81d6bd2a;
}
.energy-footer-apmedia:hover {
  color: #28c49b;
  text-decoration: underline;
  opacity: 1;
}
@media (max-width: 700px) {
  .energy-footer-main {
    flex-direction: column;
    gap: 22px;
    align-items: flex-start;
  }
  .energy-footer-links {
    gap: 13px;
    margin-top: 4px;
  }
  .energy-footer-inner { padding: 0 3vw;}
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .heating-hero-section { padding:70px 0 50px 0; min-height:280px;}
  .heating-hero-flex { flex-direction: column; gap: 26px;}
  .heating-hero-img { max-width: 92vw;}
  .main-hero-title { font-size:1.55rem;}
  .hero-desc { font-size:1.07rem;}
  .categories-row { gap:18px; flex-wrap:wrap; }
  .category-tile { min-width: 140px; max-width: 95vw; padding: 30px 8px 18px 8px;}
  .super-cta { padding:20px 4vw 24px 4vw; border-radius:22px;}
  .cta-title-xl { font-size:1.16rem;}
  .cta-desc-xl { font-size:.97rem;}
  .cta-big { font-size:.97rem; padding:12px 18px;}
  .energy-footer-main { flex-direction: column; gap: 18px; align-items: flex-start;}
  .energy-footer-inner { padding: 0 3vw;}
}
@media (max-width: 540px) {
  .category-tile { padding: 20px 4px 10px 4px;}
  .heating-hero-img { min-height: 150px;}
}