/* =========================================================
   ZT-ZGRADARSKA TEHNIKA d.o.o. — demonstracijska stranica
   Vizualni smjer: tehnička dokumentacija / building systems
   ========================================================= */

:root {
  --navy: #0E1E33;
  --navy-2: #152A44;
  --graphite: #23282E;
  --white: #FFFFFF;
  --cool: #EEF1F4;
  --cool-2: #E2E7EC;
  --steel: #7D8A98;
  --steel-dark: #4F5B68;
  --ink: #17202B;
  --copper: #B8693D;
  --copper-light: #D88A5B;
  --water: #4A7FA3;
  --water-light: #8FB7D2;

  --line: rgba(14, 30, 51, 0.14);
  --line-light: rgba(255, 255, 255, 0.16);

  --font-head: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Manrope", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  --container: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --header-h: 76px;
  --section-pad: clamp(72px, 10vw, 140px);
  --radius: 2px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open { overflow: hidden; }

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; }

ul, ol { margin: 0; padding: 0; list-style: none; }

p { margin: 0 0 1em; }

figure { margin: 0; }

button { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  /* bez lomljenja riječi */
  -webkit-hyphens: none;
  hyphens: none;
  word-break: normal;
  overflow-wrap: normal;
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 16px; top: -60px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--copper);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 12px; }

:focus-visible {
  outline: 3px solid var(--copper-light);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-pad); }

/* ---------- Typography helpers ---------- */
.h-xl { font-size: clamp(2.25rem, 7.2vw, 5.5rem); }
.h-lg { font-size: clamp(2rem, 5.6vw, 4.1rem); }

.lead {
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  line-height: 1.5;
  font-weight: 600;
  color: var(--navy);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-dark);
}
.section-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}
.kicker-warm { color: var(--copper); }
.kicker-cold { color: var(--water); }

.note-small {
  font-size: 0.95rem;
  color: var(--steel-dark);
}

/* ---------- Tags (ILUSTRATIVNI PRIKAZ) ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
  color: var(--navy);
  background: var(--white);
  border: 1px solid var(--line);
  white-space: nowrap;
}
.tag::before {
  content: "";
  width: 6px; height: 6px;
  border: 1.5px solid var(--copper);
  border-radius: 50%;
}
.tag-on-image {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  pointer-events: none;
}
.tag-on-dark {
  color: var(--white);
  background: rgba(14, 30, 51, 0.72);
  border-color: var(--line-light);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 26px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  text-align: center;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn-copper {
  background: var(--copper);
  color: var(--white);
  border-color: var(--copper);
}
.btn-copper:hover {
  background: #A35A31;
  border-color: #A35A31;
}
.btn-ghost-light {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
  background: transparent;
}
.btn-ghost-light:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}
.btn-block { width: 100%; }

.text-link {
  display: inline-block;
  margin-top: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--copper);
  transition: color 0.2s;
}
.text-link:hover { color: var(--copper); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  color: var(--white);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.site-header.is-scrolled,
body.nav-open .site-header {
  background: rgba(14, 30, 51, 0.96);
  border-bottom-color: var(--line-light);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.6);
}
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .site-header.is-scrolled {
    background: rgba(14, 30, 51, 0.88);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
  flex-shrink: 0;
}
.wordmark-zt {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-head);
  font-stretch: 80%;
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  border: 2px solid var(--white);
  position: relative;
}
.wordmark-zt::after {
  content: "";
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 12px;
  height: 2px;
  background: var(--copper-light);
}
.wordmark-name {
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 700;
  font-size: 0.8rem;
  line-height: 1.1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav { margin-left: auto; }
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.2vw, 34px);
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 0;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.86);
  transition: color 0.2s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 2px;
  background: var(--copper-light);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover,
.nav-link.is-active { color: var(--white); }
.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); }

.header-cta {
  min-height: 44px;
  padding: 10px 18px;
  font-size: 0.78rem;
}
.nav-mobile-cta { display: none; }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 46px;
  height: 46px;
  padding: 0;
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--white);
  transition: transform 0.3s var(--ease), opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--header-h) + 48px);
  padding-bottom: 150px;
  background: var(--navy);
  color: var(--white);
  overflow: hidden;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 62%;
  z-index: -1;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--navy) 0%, rgba(14, 30, 51, 0.82) 22%, rgba(14, 30, 51, 0.25) 60%, rgba(14, 30, 51, 0.1) 100%),
    linear-gradient(0deg, rgba(14, 30, 51, 0.85) 0%, rgba(14, 30, 51, 0) 40%);
  z-index: 1;
}
.hero-tag {
  position: absolute;
  top: calc(var(--header-h) + 20px);
  right: var(--gutter);
  z-index: 2;
}

/* blueprint grid in navy panel */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
}

.hero-inner { position: relative; }
.hero-content { max-width: 640px; }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper-light);
}
.hero-kicker::before {
  content: "";
  width: 34px;
  height: 2px;
  background: currentColor;
}

.hero-title {
  font-size: clamp(2.6rem, 7.4vw, 6.4rem);
  font-weight: 900;
  font-stretch: 82%;
  line-height: 0.96;
  letter-spacing: -0.015em;
}
.hero-line { display: block; }
.hero-line-muted { color: rgba(255, 255, 255, 0.55); }

.hero-lead {
  max-width: 34em;
  margin: 28px 0 36px;
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.86);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-region {
  margin: 40px 0 0;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.62);
}

/* pipes: polaz / povrat */
.hero-pipes {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 40px;
  display: grid;
  gap: 14px;
  padding-left: var(--gutter);
}
.pipe-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.pipe-label {
  flex: 0 0 64px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}
.pipe-line {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  transform-origin: left center;
  transform: scaleX(0);
  animation: pipeDraw 1.6s var(--ease) 0.35s forwards;
}
.pipe-row-warm .pipe-line {
  background: linear-gradient(90deg, var(--copper) 0%, var(--copper-light) 70%, rgba(216, 138, 91, 0.2) 100%);
}
.pipe-row-cold .pipe-line {
  background: linear-gradient(90deg, var(--water) 0%, var(--water-light) 70%, rgba(143, 183, 210, 0.2) 100%);
  animation-delay: 0.6s;
}
@keyframes pipeDraw {
  to { transform: scaleX(1); }
}

/* hero load sequence */
.hero-kicker,
.hero-title,
.hero-lead,
.hero-actions,
.hero-region {
  animation: heroIn 0.9s var(--ease) both;
}
.hero-title { animation-delay: 0.08s; }
.hero-lead { animation-delay: 0.18s; }
.hero-actions { animation-delay: 0.26s; }
.hero-region { animation-delay: 0.34s; }
@keyframes heroIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

/* =========================================================
   CREDIBILITY STRIP
   ========================================================= */
.cred {
  background: var(--graphite);
  color: var(--white);
}
.cred-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}
.cred-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 30px 22px 28px;
  border-left: 1px solid var(--line-light);
}
.cred-item:last-child { border-right: 1px solid var(--line-light); }
.cred-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: -1px;
  width: 1px;
  height: 14px;
  background: var(--steel);
}
.cred-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--water-light);
}
.cred-item-warm::after { background: var(--copper-light); }
.cred-item strong {
  font-family: var(--font-head);
  font-stretch: 86%;
  font-size: clamp(1.25rem, 2.1vw, 1.75rem);
  font-weight: 800;
  text-transform: uppercase;
  line-height: 1.05;
  white-space: nowrap;
}
.cred-item span {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

/* =========================================================
   O NAMA
   ========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(40px, 7vw, 120px);
  align-items: start;
}
.about-head { position: sticky; top: calc(var(--header-h) + 32px); }
.about-head .h-xl { color: var(--navy); }
.about-meta {
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--steel-dark);
}
.about-meta strong { color: var(--navy); }
.about-body > p { max-width: 38em; }

.principles {
  margin: 48px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--navy);
}
.principle {
  padding: 22px 22px 24px 0;
  border-bottom: 1px solid var(--line);
}
.principle:nth-child(odd) { border-right: 1px solid var(--line); }
.principle:nth-child(even) { padding-left: 22px; }
.principle dt {
  margin-bottom: 6px;
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 800;
  font-size: 1.15rem;
  text-transform: uppercase;
  color: var(--navy);
}
.principle dd {
  margin: 0;
  font-size: 0.97rem;
  color: var(--steel-dark);
}
.principle-warm dt { color: var(--copper); }

/* =========================================================
   USLUGE
   ========================================================= */
.services {
  position: relative;
  background-color: var(--cool);
  background-image:
    linear-gradient(rgba(14, 30, 51, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 30, 51, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
}
.services-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 32px 64px;
  align-items: end;
  margin-bottom: clamp(44px, 6vw, 80px);
}
.services-head .h-xl { color: var(--navy); }
.services-intro {
  margin: 0;
  color: var(--steel-dark);
  max-width: 28em;
}

.services-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--navy);
  background: rgba(255, 255, 255, 0.55);
}
.service {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  grid-template-areas:
    "no title"
    "no items";
  column-gap: 20px;
  row-gap: 14px;
  padding: 34px 32px 36px 24px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.35s var(--ease);
}
.service:nth-child(odd) { border-right: 1px solid var(--line); }
.service::before {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  height: 2px;
  width: 100%;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.service:hover { background: var(--white); }
.service:hover::before { transform: scaleX(1); }

.service-no {
  grid-area: no;
  font-family: var(--font-head);
  font-stretch: 80%;
  font-weight: 800;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--steel);
  transition: color 0.3s;
  padding-top: 4px;
}
.service:hover .service-no { color: var(--copper); }

.service-title {
  grid-area: title;
  font-size: clamp(1.45rem, 2.5vw, 2.15rem);
  color: var(--navy);
}
.service-items {
  grid-area: items;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}
.service-items li {
  position: relative;
  padding-left: 14px;
  font-size: 0.95rem;
  color: var(--steel-dark);
}
.service-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1.5px;
  background: var(--steel);
}

/* =========================================================
   FIGURES / ZOOM
   ========================================================= */
.figure { position: relative; }
.zoom {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: var(--cool-2);
  cursor: zoom-in;
  overflow: hidden;
  position: relative;
}
.zoom img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}
.zoom:hover img { transform: scale(1.03); }
.zoom::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 14px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  font-weight: 500;
  line-height: 1;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.92);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.25s, transform 0.25s;
}
.zoom:hover::after,
.zoom:focus-visible::after { opacity: 1; transform: none; }
.zoom:focus-visible { outline-offset: 4px; }

/* spec lists */
.spec-list {
  margin: 28px 0 32px;
  border-top: 1px solid var(--line);
}
.spec-list li {
  position: relative;
  padding: 12px 0 12px 26px;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
  color: var(--navy);
}
.spec-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 2px;
  background: var(--steel);
}
.spec-warm li::before { background: var(--copper); }
.spec-cold li::before { background: var(--water); }

/* =========================================================
   PODNO GRIJANJE
   ========================================================= */
.floor-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(36px, 6vw, 96px);
  align-items: center;
}
.floor-figure .zoom { aspect-ratio: 4 / 3.3; }
.floor-figure::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 32px;
  bottom: 32px;
  width: 4px;
  background: var(--copper);
  z-index: 1;
}
.floor-text .h-lg { color: var(--navy); margin-bottom: 26px; }
.floor-text > p { color: var(--steel-dark); }

/* =========================================================
   VODOVOD
   ========================================================= */
.feature-water {
  background: var(--cool);
  position: relative;
}
.feature-water::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--water) 0 30%, transparent 30%);
}
.water-top {
  padding-bottom: 32px;
  margin-bottom: clamp(36px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}
.water-top .h-xl { color: var(--navy); }

.water-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(36px, 6vw, 96px);
  align-items: start;
}
.water-text > p:not(.lead) { color: var(--steel-dark); max-width: 34em; }
.water-specs {
  margin-top: 36px;
  border-top: 2px solid var(--water);
}
.water-specs li {
  display: grid;
  grid-template-columns: minmax(0, 150px) minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.ws-k {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--water);
  padding-top: 3px;
}
.ws-v {
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 700;
  font-size: 1.2rem;
  text-transform: uppercase;
  color: var(--navy);
}
.water-figure .zoom { aspect-ratio: 4 / 5; }

/* =========================================================
   STROJARNICA / GRIJANJE (dark)
   ========================================================= */
.feature-heat {
  background: var(--navy);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.feature-heat::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.heat-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  grid-template-areas: "text figure";
  gap: 40px clamp(36px, 6vw, 88px);
  align-items: center;
}
.heat-text { grid-area: text; padding-top: 12px; }
.heat-text .h-xl { margin-bottom: 28px; }
.heat-text p { color: rgba(255, 255, 255, 0.78); max-width: 30em; }
.heat-figure { grid-area: figure; }
.heat-figure .zoom { aspect-ratio: 16 / 10; background: var(--navy-2); }
.heat-scope {
  margin-top: 36px;
}
.heat-scope-title {
  margin-bottom: 14px;
  font-family: var(--font-body);
  font-stretch: 100%;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.6);
}
.heat-labels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-light);
}
.heat-labels li {
  position: relative;
  padding: 14px 12px 14px 22px;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--font-head);
  font-stretch: 86%;
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--white);
}
.heat-labels li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 10px;
  height: 2px;
  background: var(--copper-light);
}

/* =========================================================
   KUPAONICE
   ========================================================= */
.bath-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 24px 64px;
  align-items: end;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.bath-head .h-lg { color: var(--navy); }
.bath-intro p { margin: 0; color: var(--steel-dark); }

.bath-phases {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 72px minmax(0, 1fr);
  align-items: center;
}
.phase .zoom { aspect-ratio: 4 / 3; }
.phase-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding: 16px 0 0;
  border-top: 2px solid var(--navy);
  margin-top: 16px;
}
.phase-name {
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 800;
  font-size: 1.15rem;
  text-transform: uppercase;
  color: var(--navy);
}
.phase-link {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 60px;
}
.phase-link span {
  position: relative;
  display: block;
  width: 100%;
  height: 2px;
  margin-inline: 12px;
  background: repeating-linear-gradient(90deg, var(--steel) 0 6px, transparent 6px 11px);
}
.phase-link span::after {
  content: "";
  position: absolute;
  right: -2px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-top: 2px solid var(--steel);
  border-right: 2px solid var(--steel);
  transform: translateY(-50%) rotate(45deg);
}
.bath-foot {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 16px 64px;
  align-items: end;
  margin-top: clamp(36px, 5vw, 56px);
}
.bath-specs {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 32px;
}
.bath-foot .note-small { margin: 0; }

/* =========================================================
   KLIMA
   ========================================================= */
.feature-air {
  background: linear-gradient(180deg, var(--white) 0%, #F3F6F9 100%);
  border-top: 1px solid var(--line);
}
.air-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(36px, 6vw, 96px);
  align-items: center;
}
.air-text .h-lg { color: var(--navy); margin-bottom: 26px; }
.air-text > p { color: var(--steel-dark); }
.air-text .spec-list { margin-bottom: 0; }
.air-figure .zoom { aspect-ratio: 16 / 10; }
.air-figure::after {
  content: "";
  position: absolute;
  right: -16px;
  top: -16px;
  width: 38%;
  height: 38%;
  border-top: 2px solid var(--water-light);
  border-right: 2px solid var(--water-light);
  pointer-events: none;
}

/* =========================================================
   WIDE IMAGE BREAK
   ========================================================= */
.wide-break {
  position: relative;
  height: clamp(380px, 78vh, 820px);
  background: var(--graphite);
  overflow: hidden;
}
.wide-break > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.wide-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  background: linear-gradient(0deg, rgba(14, 30, 51, 0.78) 0%, rgba(14, 30, 51, 0) 50%);
}
.wide-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: clamp(28px, 5vw, 56px);
}
.wide-text {
  margin: 0;
  font-family: var(--font-head);
  font-stretch: 84%;
  font-weight: 800;
  font-size: clamp(1.4rem, 3.4vw, 2.5rem);
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--white);
  -webkit-hyphens: none;
  hyphens: none;
  overflow-wrap: normal;
}

/* =========================================================
   NAČIN RADA
   ========================================================= */
.process-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 20px 64px;
  align-items: end;
  margin-bottom: clamp(44px, 6vw, 72px);
}
.process-head .h-lg { color: var(--navy); }
.process-head p { margin: 0; color: var(--steel-dark); }

.process-steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}
.process-steps::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 23px;
  height: 2px;
  background: linear-gradient(90deg, var(--water) 0%, var(--steel) 50%, var(--copper) 100%);
  opacity: 0.55;
}
.step { position: relative; }
.step-no {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 26px;
  font-family: var(--font-head);
  font-stretch: 80%;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--navy);
  background: var(--white);
  border: 2px solid var(--navy);
}
.step-title {
  font-size: clamp(1.15rem, 1.7vw, 1.45rem);
  color: var(--navy);
  margin-bottom: 12px;
}
.step p {
  margin: 0;
  font-size: 0.97rem;
  color: var(--steel-dark);
}

/* =========================================================
   PODRUČJE RADA
   ========================================================= */
.area {
  background: var(--cool);
  border-top: 1px solid var(--line);
}
.area-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
.area-text .h-lg { color: var(--navy); margin-bottom: 26px; }
.area-text > p { color: var(--steel-dark); max-width: 34em; }
.area-lists {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 36px;
}
.area-label {
  font-family: var(--font-body);
  font-stretch: 100%;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--steel-dark);
  padding-bottom: 10px;
  margin-bottom: 6px;
  border-bottom: 2px solid var(--navy);
}
.area-block li {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 700;
  font-size: 1.15rem;
  text-transform: uppercase;
  color: var(--navy);
}
.area-diagram svg {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  margin-inline: auto;
  overflow: visible;
}
.area-diagram figcaption {
  margin-top: 14px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--steel-dark);
}
.ring {
  fill: none;
  stroke: var(--navy);
  stroke-width: 1.5;
  opacity: 0.55;
}
.ring-inner { stroke-width: 2; opacity: 0.85; }
.ring-dash { stroke-dasharray: 5 6; }
.ring-outer {
  stroke: var(--copper);
  stroke-dasharray: 2 7;
  stroke-width: 2;
  opacity: 0.9;
}
.axis {
  stroke: var(--steel);
  stroke-width: 1;
  opacity: 0.35;
}
.core { fill: var(--copper); }
.core-halo {
  fill: none;
  stroke: var(--copper);
  stroke-width: 1.5;
  opacity: 0.5;
}
.lbl {
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  fill: var(--navy);
  paint-order: stroke;
  stroke: var(--cool);
  stroke-width: 8px;
  stroke-linejoin: round;
}
.lbl-core { font-size: 19px; }
.lbl-warm { fill: var(--copper); }

/* =========================================================
   AI NAPOMENA
   ========================================================= */
.disclaimer-section {
  padding-block: clamp(48px, 6vw, 80px);
  background: var(--white);
}
.ai-note {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: clamp(22px, 3vw, 32px) clamp(20px, 3vw, 36px);
  background: var(--cool);
  border: 1px solid var(--line);
  border-left: 5px solid var(--copper);
}
.ai-note-icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  background: var(--navy);
  border-radius: 50%;
}
.ai-note p {
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--navy);
}

/* =========================================================
   KONTAKT
   ========================================================= */
.contact {
  background: var(--navy);
  color: var(--white);
  position: relative;
}
.contact::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--copper) 0 50%, var(--water) 50% 100%);
}
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
.contact-info .h-lg { margin-bottom: 40px; }
.contact-list { margin: 0; border-top: 1px solid var(--line-light); }
.contact-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-light);
}
.contact-row dt {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  padding-top: 4px;
}
.contact-row dd {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}
.contact-link {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--copper-light);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
  transition: color 0.2s;
}
.contact-link:hover { color: var(--copper-light); }
.phone-text { white-space: nowrap; }

.contact-form-wrap {
  background: var(--white);
  color: var(--ink);
  padding: clamp(24px, 3.5vw, 44px);
  position: relative;
}
.contact-form-wrap::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 56px;
  height: 4px;
  background: var(--copper);
}
.form-title {
  font-family: var(--font-head);
  font-stretch: 86%;
  font-weight: 800;
  font-size: 1.35rem;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 24px;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--steel-dark);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--cool);
  border: 1.5px solid transparent;
  border-bottom-color: var(--steel);
  border-radius: 0;
  transition: border-color 0.2s, background-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
.field select {
  padding-right: 42px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--navy) 50%),
    linear-gradient(135deg, var(--navy) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background-color: var(--white);
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(184, 105, 61, 0.35);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #B3412E; }

.form-error {
  margin: 0 0 16px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #B3412E;
}
.form-status {
  margin-top: 18px;
  padding: 16px 18px;
  background: var(--cool);
  border-left: 4px solid var(--water);
  font-size: 0.95rem;
  color: var(--navy);
}
.form-status strong { display: block; margin-bottom: 4px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--graphite);
  color: rgba(255, 255, 255, 0.78);
  padding-top: clamp(56px, 7vw, 88px);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 36px 48px;
  padding-bottom: 48px;
}
.footer-wordmark {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-stretch: 84%;
  font-weight: 900;
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  letter-spacing: 0.02em;
  color: var(--white);
  -webkit-hyphens: none;
  hyphens: none;
}
.footer-tagline { margin: 0; font-size: 0.95rem; }
.footer-nav ul { display: grid; gap: 8px; }
.footer-nav a,
.footer-contact a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-nav a:hover,
.footer-contact a:hover { color: var(--copper-light); text-decoration: underline; }
.footer-contact p { margin: 0 0 8px; overflow-wrap: anywhere; }

.footer-bottom {
  padding-block: 28px 36px;
  border-top: 1px solid var(--line-light);
}
.instadig-disclaimer {
  margin: 0;
  max-width: 60em;
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}
.instadig-badge {
  display: inline-block;
  margin-top: 12px;
  padding: 6px 12px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

/* =========================================================
   LIGHTBOX
   ========================================================= */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px var(--gutter) 40px;
  background: rgba(10, 18, 30, 0.93);
  opacity: 0;
  transition: opacity 0.25s var(--ease);
}
.lightbox[hidden] { display: none; }
.lightbox.is-open { opacity: 1; }
.lightbox-figure {
  max-width: min(1200px, 100%);
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lightbox-figure img {
  max-width: 100%;
  max-height: calc(100vh - 170px);
  max-height: calc(100svh - 170px);
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8);
}
.lightbox-figure figcaption {
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
}
.lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  font-size: 2rem;
  line-height: 1;
  color: var(--white);
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
}
.lightbox-close:hover { border-color: var(--white); background: rgba(255, 255, 255, 0.08); }

/* =========================================================
   REVEAL
   ========================================================= */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1100px) {
  .header-cta { display: none; }
  .hero-media { width: 70%; }
  .cred-item { padding-inline: 16px; }
  .heat-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "text"
      "figure";
  }
  .heat-text .h-xl { margin-bottom: 20px; }
}

@media (max-width: 960px) {
  :root { --header-h: 68px; }

  .nav-toggle { display: inline-flex; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    padding: 28px var(--gutter) 40px;
    background: var(--navy);
    border-top: 1px solid var(--line-light);
    display: flex;
    flex-direction: column;
    gap: 28px;
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0s linear 0.3s;
  }
  .nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0s;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-list li { border-bottom: 1px solid var(--line-light); }
  .nav-link {
    display: block;
    padding: 18px 0;
    font-family: var(--font-head);
    font-stretch: 86%;
    font-weight: 800;
    font-size: 1.6rem;
    text-transform: uppercase;
  }
  .nav-link::after { bottom: 12px; width: 40px; right: auto; }
  .nav-mobile-cta { display: inline-flex; align-self: flex-start; }

  .about-grid,
  .floor-grid,
  .water-grid,
  .air-grid,
  .area-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .about-head { position: static; }
  .services-head,
  .bath-head,
  .bath-foot,
  .process-head {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }
  .water-figure .zoom { aspect-ratio: 4 / 3; }
  .floor-figure::before { left: -10px; }
  .air-figure::after { right: -10px; top: -10px; }
  .area-diagram { max-width: 520px; width: 100%; margin-inline: auto; }

  .process-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 28px;
  }
  .process-steps::before { display: none; }
}

@media (max-width: 768px) {
  .hero {
    justify-content: flex-end;
    padding-top: calc(var(--header-h) + 120px);
    padding-bottom: 130px;
  }
  .hero-media { width: 100%; }
  .hero-media::before {
    background:
      linear-gradient(0deg, var(--navy) 0%, rgba(14, 30, 51, 0.88) 45%, rgba(14, 30, 51, 0.45) 75%, rgba(14, 30, 51, 0.55) 100%);
  }
  .hero-tag { top: calc(var(--header-h) + 14px); }

  .cred-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cred-item { border-bottom: 1px solid var(--line-light); }
  .cred-item:nth-child(2n) { border-right: 1px solid var(--line-light); }
  .cred-item:last-child { grid-column: 1 / -1; }

  .services-list { grid-template-columns: minmax(0, 1fr); }
  .service:nth-child(odd) { border-right: 0; }
  .service {
    grid-template-columns: 48px minmax(0, 1fr);
    column-gap: 14px;
    padding: 28px 18px 30px 14px;
  }
  .service-no { font-size: 1.3rem; }

  .bath-phases {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  .phase-link {
    height: 56px;
    padding: 0;
  }
  .phase-link span {
    width: 2px;
    height: 100%;
    margin: 0;
    background: repeating-linear-gradient(180deg, var(--steel) 0 6px, transparent 6px 11px);
  }
  .phase-link span::after {
    right: auto;
    left: 50%;
    top: auto;
    bottom: 0;
    transform: translateX(-50%) rotate(135deg);
  }


  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }

  .wordmark-zt { width: 40px; height: 40px; font-size: 1.2rem; }
  .wordmark-name { font-size: 0.72rem; }

  .hero-title { font-size: clamp(2.2rem, 11vw, 3rem); }
  .hero-actions .btn { flex: 1 1 100%; }
  .hero-region { margin-top: 28px; font-size: 0.78rem; }
  .pipe-label { flex-basis: 52px; font-size: 0.62rem; }

  .h-xl { font-size: clamp(2rem, 10vw, 2.6rem); }
  .h-lg { font-size: clamp(1.75rem, 8.4vw, 2.3rem); }

  .principles { grid-template-columns: minmax(0, 1fr); }
  .principle,
  .principle:nth-child(even) { padding: 18px 0; border-right: 0; }
  .principle:nth-child(odd) { border-right: 0; }

  .service-title { font-size: clamp(1.25rem, 6.2vw, 1.5rem); }

  .water-specs li { grid-template-columns: minmax(0, 1fr); gap: 2px; }

  .bath-specs { grid-template-columns: minmax(0, 1fr); }

  .process-steps { grid-template-columns: minmax(0, 1fr); gap: 32px; }

  .area-lists { grid-template-columns: minmax(0, 1fr); }

  .contact-row { grid-template-columns: minmax(0, 1fr); gap: 4px; }

  .ai-note { flex-direction: column; gap: 14px; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }

  .zoom::after { opacity: 1; transform: none; width: 32px; height: 32px; font-size: 1.2rem; }

  .floor-figure::before { left: -8px; width: 3px; }
  .air-figure::after { display: none; }
}

@media (max-width: 380px) {
  .cred-item { padding-inline: 12px; }
  .cred-item strong { font-size: 1.15rem; }
}

@media (max-width: 330px) {
  .wordmark-name { display: none; }
}

/* =========================================================
   REDUCED MOTION
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .pipe-line { transform: none; animation: none; }
  .js .reveal { opacity: 1; transform: none; }
}