:root {
  --container-width: 1240px;
  --sidebar-width: 300px;
  --bg: #f5f7f9;
  --surface: #fff;
  --text: #17212b;
  --muted: #667482;
  --line: #e4e9ed;
  --primary: #087ea4;
  --primary-dark: #075c78;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(20, 39, 55, .07);
  --font: Vazirmatn, Tahoma, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.9;
}
img { max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; }
button, input, select, textarea { font: inherit; }
.container {
  width: min(calc(100% - 32px), var(--container-width));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  transform: translateY(-150%);
  z-index: 9999;
}
.skip-link:focus { transform: none; }

.site-topbar {
  background: #14212b;
  color: #dbe5eb;
  font-size: .82rem;
}
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.header-grid {
  min-height: 92px;
  display: grid;
  grid-template-columns: auto minmax(260px, 620px) auto;
  align-items: center;
  gap: 28px;
}
.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}
.site-brand img { max-height: 58px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 52px;
  aspect-ratio: 1;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #21a5c8);
  color: #fff;
  font-weight: 800;
}
.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}
.brand-copy small {
  color: var(--muted);
  font-size: .78rem;
}
.header-search input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8fafb;
  padding-inline: 16px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.menu-toggle span {
  display: block;
  height: 2px;
  margin: 4px;
  background: var(--text);
}
.site-navigation { background: #18242d; }
.site-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}
.site-navigation li { position: relative; }
.site-navigation a {
  display: block;
  padding: 13px 17px;
  color: #fff;
}
.site-navigation ul ul {
  display: none;
  position: absolute;
  inset-block-start: 100%;
  inset-inline-start: 0;
  min-width: 220px;
  background: #1e2d38;
  z-index: 20;
}
.site-navigation li:hover > ul { display: block; }
.breadcrumb-wrap {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

/* Full-width search position above the page content. */
.site-search-strip {
  padding-block: 18px;
  background: linear-gradient(180deg, #fff, #f8fafb);
  border-bottom: 1px solid var(--line);
}
.site-search-strip form,
.site-search-strip .mod-finder,
.site-search-strip .mod-finder__search {
  width: 100%;
  margin: 0;
}
.site-search-strip .mod-finder__search {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.site-search-strip input[type="search"],
.site-search-strip input[type="text"] {
  min-width: 0;
  flex: 1 1 auto;
  height: 58px;
  padding-inline: 20px;
  border: 1px solid #d9e1e6;
  border-radius: 15px;
  background: #fff;
  color: var(--text);
  box-shadow: 0 8px 24px rgba(21, 42, 58, .06);
  outline: none;
}
.site-search-strip input:focus {
  border-color: color-mix(in srgb, var(--primary) 60%, white);
  box-shadow: 0 0 0 4px rgba(8, 126, 164, .10), 0 8px 24px rgba(21, 42, 58, .06);
}
.site-search-strip button,
.site-search-strip .btn {
  min-width: 58px;
  min-height: 58px;
  border: 0;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
}

.site-main {
  min-height: 60vh;
  padding-block: 28px 52px;
}
.page-home .site-main { padding-top: 0; }
.home-section { padding-block: 28px; }
.home-tools {
  background: #202a31;
  color: #fff;
}
.section-heading h2 { margin: 0; }

.content-shell {
  display: grid;
  gap: 28px;
  align-items: start;
}
.content-shell.without-sidebar { grid-template-columns: minmax(0, 1fr); }

/*
 * Physical column control:
 * direction:ltr keeps "left" and "right" predictable even when the page is RTL.
 * Direction is restored on the actual content and sidebar.
 */
.home-layout,
.article-layout,
.blog-layout { direction: ltr; }
.home-layout > *,
.article-layout > *,
.blog-layout > * { direction: rtl; }
html[dir="ltr"] .home-layout > *,
html[dir="ltr"] .article-layout > *,
html[dir="ltr"] .blog-layout > * { direction: ltr; }

/* Home: content on the left, service sidebar on the right. */
.home-layout.with-sidebar {
  grid-template-columns: minmax(0, 1fr) var(--sidebar-width);
}
.home-layout .content-column {
  grid-column: 1;
  min-width: 0;
}
.home-layout .home-sidebar {
  grid-column: 2;
  grid-row: 1;
}

/* Article: reading sidebar on the left, article on the right. */
.article-stage {
  transition: width .28s ease;
}
.article-layout {
  position: relative;
  transition: grid-template-columns .28s ease, gap .28s ease;
}
.article-layout.with-sidebar {
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
}
.article-layout .content-column {
  grid-column: 2;
  min-width: 0;
}
.article-layout .article-sidebar {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  transition: transform .28s ease, opacity .2s ease, visibility .2s ease;
}
.article-layout.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
  gap: 0;
}
.article-layout.sidebar-collapsed .article-sidebar {
  transform: translateX(calc(-100% - 28px));
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.page-article.article-reading-mode .article-stage {
  width: min(calc(100% - 32px), 1600px);
}
.article-sidebar-toggle {
  position: absolute;
  z-index: 8;
  top: 20px;
  left: calc(var(--sidebar-width) + 14px);
  transform: translateX(-50%);
  display: grid;
  place-items: center;
  width: 32px;
  height: 58px;
  padding: 0;
  border: 1px solid #d6dfe5;
  border-radius: 0 12px 12px 0;
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 7px 22px rgba(20, 39, 55, .12);
  cursor: pointer;
  transition: left .28s ease, background-color .2s ease, color .2s ease;
}
.article-sidebar-toggle:hover {
  background: var(--primary);
  color: #fff;
}
.article-layout.sidebar-collapsed .article-sidebar-toggle { left: 0; }
.sidebar-toggle-icon {
  display: block;
  font-size: 1.55rem;
  line-height: 1;
}

/* Blog remains a conventional content + sidebar layout. */
.blog-layout.with-sidebar {
  grid-template-columns: minmax(0, 1fr) var(--sidebar-width);
}
.blog-layout .content-column { grid-column: 1; min-width: 0; }
.blog-layout .sidebar { grid-column: 2; grid-row: 1; }

.content-card,
.module-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.content-card { padding: clamp(20px, 3vw, 42px); }
.module-card { overflow: hidden; }
.module-title {
  margin: 0;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
}
.module-content { padding: 16px 18px; }
.module-grid { display: grid; gap: 20px; }
.module-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.module-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.two-column-modules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.sidebar {
  display: grid;
  gap: 18px;
}
.sidebar-zone {
  display: grid;
  gap: 18px;
  min-width: 0;
}
.has-sticky-sidebar .sidebar {
  position: sticky;
  top: 24px;
}
.article-module { margin-top: 24px; }

.item-page > h1,
.item-page .page-header h1,
.blog h1 {
  margin-top: 0;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.45;
}
.item-page h2,
.item-page h3 {
  line-height: 1.55;
  margin-top: 2em;
}
.item-page p,
.item-page li { max-width: 82ch; }
.article-info {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  color: var(--muted);
  font-size: .82rem;
}
.item-page blockquote {
  padding: 18px 22px;
  border-inline-start: 4px solid var(--primary);
  background: #f8fafb;
  border-radius: 10px;
}
.table-scroll { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}
th, td {
  padding: 11px 13px;
  border: 1px solid var(--line);
  text-align: start;
}

.site-footer {
  background: #1b2731;
  color: #d8e1e6;
  padding-top: 46px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 42px;
  padding-bottom: 40px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-block: 16px;
}
.back-to-top {
  position: fixed;
  inset-inline-end: 22px;
  inset-block-end: 22px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  opacity: 0;
  pointer-events: none;
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}
.error-page,
.offline-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.error-card {
  width: min(100%, 620px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 42px;
  text-align: center;
}
.error-code {
  display: block;
  font-size: 5rem;
  color: var(--primary);
}
.mod-languages ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 8px;
}

@media (max-width: 1050px) {
  .module-grid-4,
  .module-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-layout.with-sidebar,
  .blog-layout.with-sidebar { grid-template-columns: minmax(0, 1fr) 270px; }
  .article-layout.with-sidebar { grid-template-columns: 270px minmax(0, 1fr); }
  .article-sidebar-toggle { left: 284px; }
}

@media (max-width: 820px) {
  .header-grid { grid-template-columns: 1fr auto; }
  .header-search {
    grid-column: 1 / -1;
    padding-bottom: 14px;
  }
  .menu-toggle { display: block; }
  .site-navigation { display: none; }
  .nav-open .site-navigation { display: block; }
  .site-navigation ul { display: block; }
  .site-navigation ul ul {
    display: block;
    position: static;
  }
  .site-search-strip .mod-finder__search { display: grid; grid-template-columns: 1fr auto; }

  .home-layout.with-sidebar,
  .article-layout.with-sidebar,
  .article-layout.sidebar-collapsed,
  .blog-layout.with-sidebar {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }
  .home-layout .content-column,
  .home-layout .home-sidebar,
  .article-layout .content-column,
  .article-layout .article-sidebar,
  .blog-layout .content-column,
  .blog-layout .sidebar {
    grid-column: 1;
    grid-row: auto;
  }
  .article-layout .article-sidebar,
  .article-layout.sidebar-collapsed .article-sidebar {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .article-sidebar-toggle { display: none; }
  .has-sticky-sidebar .sidebar { position: static; }
  .page-article.article-reading-mode .article-stage {
    width: min(calc(100% - 32px), var(--container-width));
  }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .container { width: min(calc(100% - 20px), var(--container-width)); }
  .content-card { padding: 20px 16px; }
  .module-grid-3,
  .module-grid-4,
  .two-column-modules,
  .footer-grid { grid-template-columns: 1fr; }
  .brand-copy small { display: none; }
  .site-search-strip .mod-finder__search { grid-template-columns: 1fr; }
  .site-search-strip button,
  .site-search-strip .btn { min-height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* =========================================================
   IRHVAC 0.1.4 — aligned home sidebar + modern mega menu
   ========================================================= */
.site-header {
  position: relative;
  z-index: 5000;
  overflow: visible;
  isolation: isolate;
  box-shadow: 0 5px 24px rgba(8, 20, 29, .07);
}
.site-navigation {
  position: relative;
  z-index: 5100;
  overflow: visible;
  background:
    radial-gradient(circle at 20% 0%, rgba(30, 154, 190, .14), transparent 28%),
    linear-gradient(135deg, #111c24 0%, #182933 55%, #101a21 100%);
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(0,0,0,.35);
  box-shadow: 0 8px 24px rgba(5, 15, 22, .18);
}
.site-navigation .container {
  position: relative;
  overflow: visible;
}
.site-navigation ul {
  gap: 2px;
  align-items: stretch;
}
.site-navigation > .container > ul > li,
.site-navigation .mod-menu > li {
  position: static;
}
.site-navigation > .container > ul > li > a,
.site-navigation .mod-menu > li > a {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 11px 18px;
  color: #eaf4f7;
  font-weight: 650;
  letter-spacing: -.01em;
  border-radius: 9px 9px 0 0;
  transition: color .2s ease, background-color .2s ease, transform .2s ease;
}
.site-navigation > .container > ul > li > a::after,
.site-navigation .mod-menu > li > a::after {
  content: "";
  position: absolute;
  inset-inline: 16px;
  inset-block-end: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(90deg, #16a3ca, #48d1ee);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .22s ease;
}
.site-navigation > .container > ul > li:hover > a,
.site-navigation > .container > ul > li:focus-within > a,
.site-navigation > .container > ul > li.active > a,
.site-navigation .mod-menu > li:hover > a,
.site-navigation .mod-menu > li:focus-within > a,
.site-navigation .mod-menu > li.active > a,
.site-navigation .mod-menu > li.current > a,
.site-navigation .mod-menu > li.is-mega-open > a {
  color: #fff;
  background: rgba(255,255,255,.075);
}
.site-navigation > .container > ul > li:hover > a::after,
.site-navigation > .container > ul > li:focus-within > a::after,
.site-navigation > .container > ul > li.active > a::after,
.site-navigation .mod-menu > li:hover > a::after,
.site-navigation .mod-menu > li:focus-within > a::after,
.site-navigation .mod-menu > li.active > a::after,
.site-navigation .mod-menu > li.current > a::after,
.site-navigation .mod-menu > li.is-mega-open > a::after {
  transform: scaleX(1);
}
.site-navigation li.deeper > a,
.site-navigation li.parent > a {
  gap: 8px;
}
.site-navigation li.deeper > a::before,
.site-navigation li.parent > a::before {
  content: "⌄";
  order: 2;
  font-size: .85em;
  color: #76d8ef;
  transform: translateY(-1px);
  transition: transform .2s ease;
}
.site-navigation li.deeper:hover > a::before,
.site-navigation li.deeper:focus-within > a::before,
.site-navigation li.parent:hover > a::before,
.site-navigation li.parent:focus-within > a::before,
.site-navigation li.is-mega-open > a::before {
  transform: translateY(1px) rotate(180deg);
}

/* First dropdown level becomes a full-width mega panel. */
.site-navigation > .container > ul > li > ul,
.site-navigation .mod-menu > li > ul {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: 10px 16px;
  position: absolute;
  inset-inline: 0;
  inset-block-start: calc(100% + 8px);
  width: 100%;
  min-width: 0;
  max-height: min(70vh, 620px);
  overflow: auto;
  padding: 18px;
  border: 1px solid rgba(123, 188, 211, .22);
  border-radius: 0 0 18px 18px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.035), transparent 35%),
    rgba(15, 27, 35, .985);
  box-shadow: 0 28px 65px rgba(3, 12, 18, .42);
  backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-10px) scale(.992);
  transform-origin: top center;
  transition: opacity .2s ease, visibility .2s ease, transform .24s cubic-bezier(.2,.75,.25,1);
  z-index: 99999;
}
.site-navigation > .container > ul > li:hover > ul,
.site-navigation > .container > ul > li:focus-within > ul,
.site-navigation .mod-menu > li:hover > ul,
.site-navigation .mod-menu > li:focus-within > ul,
.site-navigation .mod-menu > li.is-mega-open > ul {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}
.site-navigation .mod-menu > li > ul > li,
.site-navigation > .container > ul > li > ul > li {
  position: relative;
  min-width: 0;
  border: 1px solid rgba(255,255,255,.055);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}
.site-navigation .mod-menu > li > ul > li:hover,
.site-navigation > .container > ul > li > ul > li:hover {
  border-color: rgba(50, 192, 228, .3);
  background: rgba(29, 156, 190, .08);
  transform: translateY(-2px);
}
.site-navigation .mod-menu > li > ul > li > a,
.site-navigation > .container > ul > li > ul > li > a {
  padding: 12px 14px;
  color: #dcebef;
  font-weight: 650;
  line-height: 1.6;
}
.site-navigation .mod-menu > li > ul > li > a:hover,
.site-navigation .mod-menu > li > ul > li > a:focus,
.site-navigation > .container > ul > li > ul > li > a:hover,
.site-navigation > .container > ul > li > ul > li > a:focus {
  color: #64d8f2;
}
.site-navigation .mod-menu > li > ul > li > ul,
.site-navigation > .container > ul > li > ul > li > ul {
  display: block !important;
  position: static;
  min-width: 0;
  padding: 0 14px 12px;
  background: transparent;
  box-shadow: none;
  opacity: 1;
  visibility: visible;
  transform: none;
}
.site-navigation .mod-menu > li > ul > li > ul a,
.site-navigation > .container > ul > li > ul > li > ul a {
  padding: 5px 0;
  color: #9eb4bd;
  font-size: .88rem;
  line-height: 1.55;
}
.site-navigation .mod-menu > li > ul > li > ul a:hover,
.site-navigation > .container > ul > li > ul > li > ul a:hover {
  color: #fff;
}

/* Keep every dropdown above sliders, cards and transformed module layers. */
.site-main,
.home-stage,
.home-tools,
.irhvac-articles,
.irhvac-tools-slider {
  position: relative;
  z-index: 1;
}

/* Home grid begins immediately below the menu; sidebar aligns with first module. */
.page-home .site-main {
  padding-top: 0;
}
.home-stage {
  padding-top: 18px;
}
.home-content-flow {
  display: grid;
  gap: 24px;
  min-width: 0;
}
.home-content-flow > .home-section {
  padding-block: 0;
  min-width: 0;
}
.home-content-flow .home-tools {
  overflow: visible;
  border-radius: 14px;
}
.home-main-section {
  min-width: 0;
}
.home-layout.with-sidebar {
  align-items: start;
}
.home-layout .home-sidebar {
  align-self: start;
  margin: 0;
}
.home-stats-section {
  padding-top: 24px;
}

/* Search becomes the first, visually distinct item in the home sidebar. */
.home-sidebar-search {
  position: relative;
  z-index: 2;
  padding: 14px;
  border: 1px solid #dfe6ea;
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow);
}
.home-sidebar-search form,
.home-sidebar-search .mod-finder,
.home-sidebar-search .mod-finder__search {
  width: 100%;
  margin: 0;
}
.home-sidebar-search .mod-finder__search {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 46px;
  gap: 8px;
}
.home-sidebar-search input[type="search"],
.home-sidebar-search input[type="text"] {
  width: 100%;
  min-width: 0;
  height: 46px;
  padding-inline: 13px;
  border: 1px solid #d8e1e6;
  border-radius: 10px;
  background: #f8fafb;
  outline: 0;
}
.home-sidebar-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8,126,164,.10);
}
.home-sidebar-search button,
.home-sidebar-search .btn {
  display: grid;
  place-items: center;
  min-width: 46px;
  min-height: 46px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #16a9c8);
  color: #fff;
  cursor: pointer;
}

@media (max-width: 1100px) and (min-width: 821px) {
  .site-navigation > .container > ul > li > a,
  .site-navigation .mod-menu > li > a {
    padding-inline: 12px;
    font-size: .91rem;
  }
  .site-navigation > .container > ul > li > ul,
  .site-navigation .mod-menu > li > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header { z-index: 5000; }
  .site-navigation {
    position: absolute;
    inset-inline: 0;
    inset-block-start: 100%;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    border-radius: 0 0 16px 16px;
  }
  .nav-open .site-navigation { display: block; }
  .site-navigation .container { width: 100%; }
  .site-navigation ul,
  .site-navigation ul.mod-menu {
    display: block;
    padding: 10px;
  }
  .site-navigation > .container > ul > li,
  .site-navigation .mod-menu > li {
    position: relative;
  }
  .site-navigation > .container > ul > li > a,
  .site-navigation .mod-menu > li > a {
    min-height: 46px;
    border-radius: 10px;
  }
  .site-navigation > .container > ul > li > ul,
  .site-navigation .mod-menu > li > ul {
    display: none !important;
    position: static;
    grid-template-columns: 1fr;
    width: auto;
    max-height: none;
    margin: 4px 10px 10px;
    padding: 8px;
    border-radius: 12px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }
  .site-navigation > .container > ul > li.is-mega-open > ul,
  .site-navigation .mod-menu > li.is-mega-open > ul {
    display: grid !important;
  }
  .site-navigation .mod-menu > li > ul > li,
  .site-navigation > .container > ul > li > ul > li {
    transform: none;
  }
  .home-stage { padding-top: 14px; }
  .home-sidebar-search .mod-finder__search {
    grid-template-columns: minmax(0, 1fr) 46px;
  }
}

/* =========================================================
   IRHVAC 0.1.5 — branded header, docked search and sticky nav
   ========================================================= */
:root {
  --sticky-nav-height: 0px;
}

/* Physical header composition: logo right, search left in RTL. */
.header-grid {
  grid-template-columns: minmax(280px, 430px) minmax(20px, 1fr) auto;
  grid-template-areas: "search actions brand";
  min-height: 104px;
}
.site-brand {
  grid-area: brand;
  justify-self: end;
  min-width: max-content;
}
.header-search-anchor {
  grid-area: search;
  width: 100%;
  min-width: 0;
}
.header-actions {
  grid-area: actions;
  justify-self: start;
}
html[dir="ltr"] .header-grid {
  grid-template-areas: "brand actions search";
}
html[dir="ltr"] .site-brand { justify-self: start; }
html[dir="ltr"] .header-actions { justify-self: end; }

/* A clean search field in the large header row. */
.header-search,
.header-search form,
.header-search .mod-finder,
.header-search .mod-finder__search {
  width: 100%;
  margin: 0;
}
.header-search .mod-finder__search,
.header-search form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px;
  align-items: stretch;
  gap: 8px;
}
.header-search input[type="search"],
.header-search input[type="text"],
.header-search .form-control {
  width: 100%;
  min-width: 0;
  height: 48px;
  padding-inline: 16px;
  border: 1px solid #d9e2e7;
  border-radius: 12px;
  background: #f8fafb;
  color: var(--text);
  outline: 0;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}
.header-search input:focus,
.header-search .form-control:focus {
  border-color: #1ca3c5;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(8,126,164,.10);
}
.header-search button,
.header-search .btn {
  display: grid;
  place-items: center;
  min-width: 48px;
  min-height: 48px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #18a8c8);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(8,126,164,.18);
}

.navigation-sentinel,
.navigation-placeholder {
  height: 0;
  pointer-events: none;
}
.navigation-inner {
  display: flex;
  align-items: stretch;
  min-height: 52px;
  gap: 12px;
}
.navigation-menu {
  flex: 1 1 auto;
  min-width: 0;
}
.navigation-menu > .moduletable,
.navigation-menu > nav,
.navigation-menu > ul,
.navigation-menu .mod-menu {
  height: 100%;
}
.nav-search-slot {
  display: none;
  flex: 0 0 clamp(225px, 23vw, 310px);
  align-items: center;
  min-width: 0;
}

/* The menu becomes a fixed reading/navigation bar only after reaching the viewport top. */
.site-navigation.is-sticky {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  width: 100%;
  z-index: 1000000;
  box-shadow: 0 12px 34px rgba(3, 12, 18, .30);
  animation: irhvac-nav-dock .22s cubic-bezier(.2,.75,.25,1);
}
.navigation-placeholder.is-active {
  height: var(--sticky-nav-height);
}
body.nav-is-sticky {
  --sticky-nav-height: 52px;
}
body.nav-is-sticky .nav-search-slot {
  display: flex;
}

/* Search changes character inside the fixed navigation bar, echoing the old red search block. */
.site-navigation .nav-search-slot .header-search {
  padding: 6px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px;
  background: linear-gradient(135deg, #d92d20, #f04438);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 8px 20px rgba(116,24,18,.22);
}
.site-navigation .nav-search-slot .header-search form,
.site-navigation .nav-search-slot .header-search .mod-finder__search {
  grid-template-columns: minmax(0, 1fr) 38px;
  gap: 5px;
}
.site-navigation .nav-search-slot .header-search input[type="search"],
.site-navigation .nav-search-slot .header-search input[type="text"],
.site-navigation .nav-search-slot .header-search .form-control {
  height: 36px;
  padding-inline: 11px;
  border: 0;
  border-radius: 7px;
  background: rgba(255,255,255,.97);
  font-size: .84rem;
  box-shadow: none;
}
.site-navigation .nav-search-slot .header-search button,
.site-navigation .nav-search-slot .header-search .btn {
  min-width: 38px;
  min-height: 36px;
  border-radius: 7px;
  background: #8f1710;
  box-shadow: none;
}

/* No dead zone between a top item and its mega panel. */
.site-navigation > .container .mod-menu > li > ul,
.site-navigation > .container > ul > li > ul {
  inset-block-start: 100%;
  margin-block-start: 0;
}
.site-navigation > .container .mod-menu > li > ul::before,
.site-navigation > .container > ul > li > ul::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-start: -5px;
  height: 6px;
}

/* Sticky sidebars must clear the docked navigation bar. */
.nav-is-sticky.has-sticky-sidebar .sidebar {
  top: calc(var(--sticky-nav-height) + 20px);
}

@keyframes irhvac-nav-dock {
  from { opacity: .75; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (min-width: 821px) {
  .site-navigation.is-sticky > .container {
    width: min(calc(100% - 24px), var(--container-width));
  }
  .site-navigation.is-sticky .site-navigation > .container > ul > li > a,
  .site-navigation.is-sticky .mod-menu > li > a {
    min-height: 52px;
  }
  /* Slightly tighter top links leave room for the compact search field. */
  .site-navigation.is-sticky .mod-menu > li > a,
  .site-navigation.is-sticky > .container > ul > li > a {
    padding-inline: clamp(9px, 1.05vw, 15px);
    font-size: clamp(.82rem, .86vw, .94rem);
  }
}

@media (max-width: 1000px) and (min-width: 821px) {
  .header-grid {
    grid-template-columns: minmax(240px, 340px) minmax(10px, 1fr) auto;
    gap: 18px;
  }
  .nav-search-slot { flex-basis: 225px; }
  .site-navigation.is-sticky .mod-menu > li > a,
  .site-navigation.is-sticky > .container > ul > li > a {
    padding-inline: 8px;
    font-size: .8rem;
  }
}

@media (max-width: 820px) {
  .header-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand actions"
      "search search";
    min-height: auto;
    padding-block: 14px;
    gap: 12px 16px;
  }
  html[dir="ltr"] .header-grid {
    grid-template-areas:
      "brand actions"
      "search search";
  }
  .site-brand,
  html[dir="ltr"] .site-brand { justify-self: start; }
  html[dir="rtl"] .site-brand { justify-self: end; }
  .header-actions,
  html[dir="ltr"] .header-actions { justify-self: end; }
  html[dir="rtl"] .header-actions { justify-self: start; }
  .header-search-anchor { width: 100%; }
  .nav-search-slot { display: none !important; }
  .site-navigation.is-sticky { position: absolute; }
  .navigation-placeholder.is-active { height: 0; }
  body.nav-is-sticky { --sticky-nav-height: 0px; }
}

/* =========================================================
   IRHVAC 0.1.6 — exact header alignment and red sticky input
   ========================================================= */
@media (min-width: 821px) {
  /* Keep the visual geometry physical: search left, logo right, regardless of RTL flow. */
  .header-grid {
    direction: ltr;
    grid-template-columns: minmax(320px, 460px) minmax(24px, 1fr) auto;
    grid-template-areas: "search actions brand";
  }
  .header-grid > * { direction: rtl; }
  .header-search-anchor {
    justify-self: start;
    width: min(100%, 460px);
  }
  .site-brand {
    justify-self: end;
  }
  .header-actions {
    justify-self: center;
  }

  /* Stable, properly proportioned search controls in the large header. */
  .header-search .mod-finder__search,
  .header-search form {
    grid-template-columns: minmax(0, 1fr) 46px;
    width: 100%;
  }
  .header-search input[type="search"],
  .header-search input[type="text"],
  .header-search .form-control {
    box-sizing: border-box;
    height: 48px;
    min-height: 48px;
    line-height: 1.4;
    font-size: .95rem;
  }

  /* In the docked navigation, the search remains physically on the left. */
  .navigation-inner {
    direction: rtl;
  }
  .navigation-menu { order: 1; }
  .nav-search-slot {
    order: 2;
    margin-inline-start: auto;
    margin-inline-end: 0;
  }
  .nav-search-slot,
  .nav-search-slot * { direction: rtl; }
}

/* The sticky search INPUT itself is red — not merely its outside wrapper. */
.site-navigation .nav-search-slot .header-search {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.site-navigation .nav-search-slot .header-search form,
.site-navigation .nav-search-slot .header-search .mod-finder__search {
  grid-template-columns: minmax(0, 1fr) 38px;
  gap: 5px;
}
.site-navigation .nav-search-slot .header-search input[type="search"],
.site-navigation .nav-search-slot .header-search input[type="text"],
.site-navigation .nav-search-slot .header-search .form-control {
  box-sizing: border-box;
  width: 100%;
  height: 38px;
  min-height: 38px;
  padding-inline: 13px;
  border: 1px solid #a51f18;
  border-radius: 8px;
  background: linear-gradient(135deg, #d92d20, #f04438);
  color: #fff;
  caret-color: #fff;
  font-size: .86rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 5px 14px rgba(116,24,18,.22);
}
.site-navigation .nav-search-slot .header-search input::placeholder,
.site-navigation .nav-search-slot .header-search .form-control::placeholder {
  color: rgba(255,255,255,.82);
  opacity: 1;
}
.site-navigation .nav-search-slot .header-search input:focus,
.site-navigation .nav-search-slot .header-search .form-control:focus {
  border-color: #ffb4ad;
  background: linear-gradient(135deg, #c92319, #e63b30);
  box-shadow: 0 0 0 3px rgba(255,255,255,.16), 0 6px 16px rgba(116,24,18,.28);
}
.site-navigation .nav-search-slot .header-search button,
.site-navigation .nav-search-slot .header-search .btn {
  min-width: 38px;
  width: 38px;
  height: 38px;
  min-height: 38px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
  background: #8f1710;
  color: #fff;
}

/* =========================================================
   IRHVAC 0.1.7 — Joomla 5 breadcrumbs and pagination
   Joomla core emits ordered/unordered lists. The template does
   not load Bootstrap, so these components need explicit layout.
   ========================================================= */

/* Breadcrumb module */
.breadcrumb-wrap {
  padding-block: 10px;
}
.breadcrumb-wrap nav,
.breadcrumb-wrap .mod-breadcrumbs {
  width: 100%;
}
.breadcrumb-wrap .mod-breadcrumbs,
.breadcrumb-wrap .breadcrumb {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  gap: 0;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumb-wrap .mod-breadcrumbs > li,
.breadcrumb-wrap .breadcrumb > li,
.breadcrumb-wrap .breadcrumb-item,
.breadcrumb-wrap .mod-breadcrumbs__here {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  line-height: 1.65;
}
.breadcrumb-wrap .mod-breadcrumbs > li::marker,
.breadcrumb-wrap .breadcrumb > li::marker {
  content: "";
}
.breadcrumb-wrap .mod-breadcrumbs > li + li::before,
.breadcrumb-wrap .breadcrumb > li + li::before {
  content: "‹";
  flex: 0 0 auto;
  padding-inline: .55rem;
  color: #91a0aa;
  font-size: 1.05em;
  line-height: 1;
}
html[dir="ltr"] .breadcrumb-wrap .mod-breadcrumbs > li + li::before,
html[dir="ltr"] .breadcrumb-wrap .breadcrumb > li + li::before {
  content: "›";
}
.breadcrumb-wrap .mod-breadcrumbs__here {
  color: var(--muted);
  font-size: .92rem;
  white-space: nowrap;
}
.breadcrumb-wrap .breadcrumb-item a,
.breadcrumb-wrap .breadcrumb-item span,
.breadcrumb-wrap .mod-breadcrumbs > li > a,
.breadcrumb-wrap .mod-breadcrumbs > li > span {
  display: inline;
  min-width: 0;
  overflow-wrap: anywhere;
}
.breadcrumb-wrap .breadcrumb-item.active,
.breadcrumb-wrap .breadcrumb-item.active > span,
.breadcrumb-wrap .breadcrumb-item:last-child {
  color: var(--text);
}
.breadcrumb-wrap .mod-breadcrumbs__divider,
.breadcrumb-wrap .divider.icon-location {
  display: none;
}

/* Joomla list pagination and Content Page Break pagination */
.content-card .pagination__wrapper,
.content-card .pager,
.content-card .pagination-toolbar {
  width: 100%;
  margin-block: 1.5rem 0;
}
.content-card .pagination__wrapper .pagination,
.content-card .pagination-toolbar,
.content-card .pager > ul,
.content-card ul.pagination,
.content-card ul.pagenav,
.content-card .pagination > ul {
  display: flex !important;
  flex-flow: row wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 7px;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}
.content-card .pagination__wrapper ul,
.content-card .pager ul,
.content-card ul.pagination,
.content-card ul.pagenav {
  list-style: none;
}
.content-card .pagination__wrapper li,
.content-card .pager li,
.content-card .pagination li,
.content-card .pagenav li,
.content-card .page-item {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}
.content-card .pagination__wrapper li::marker,
.content-card .pager li::marker,
.content-card .pagination li::marker,
.content-card .pagenav li::marker {
  content: "";
}
.content-card .page-item > .page-link,
.content-card .pagination li > a,
.content-card .pagination li > span,
.content-card .pager li > a,
.content-card .pager li > span,
.content-card .pagenav li > a,
.content-card .pagenav li > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: 7px 12px;
  border: 1px solid #d9e1e6;
  border-radius: 9px;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 650;
  line-height: 1;
  text-align: center;
  box-shadow: 0 3px 10px rgba(20, 39, 55, .035);
  transition: border-color .18s ease, background-color .18s ease, color .18s ease, transform .18s ease;
}
.content-card .page-item > a.page-link:hover,
.content-card .pagination li > a:hover,
.content-card .pager li > a:hover,
.content-card .pagenav li > a:hover {
  border-color: var(--primary);
  background: #f2fbfd;
  color: var(--primary-dark);
  transform: translateY(-1px);
}
.content-card .page-item.active > .page-link,
.content-card .pagination li.active > a,
.content-card .pagination li.active > span,
.content-card .pager li.active > a,
.content-card .pager li.active > span,
.content-card .pagenav li.active > a,
.content-card .pagenav li.active > span {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}
.content-card .page-item.disabled > .page-link,
.content-card .pagination li.disabled > a,
.content-card .pagination li.disabled > span,
.content-card .pager li.disabled > a,
.content-card .pager li.disabled > span,
.content-card .pagenav li.disabled > a,
.content-card .pagenav li.disabled > span {
  border-color: #e6ebee;
  background: #f6f8f9;
  color: #98a4ad;
  cursor: default;
  pointer-events: none;
  box-shadow: none;
}
.content-card .pagination-counter,
.content-card .counter,
.content-card .pager .counter,
.content-card .pagination__wrapper > p {
  display: block;
  width: 100%;
  margin: 0 0 .7rem;
  color: var(--muted);
  font-size: .9rem;
}
.content-card .pagination .icon-angle-double-right,
.content-card .pagination .icon-angle-double-left,
.content-card .pagination .icon-angle-right,
.content-card .pagination .icon-angle-left {
  line-height: 1;
}

@media (max-width: 620px) {
  .breadcrumb-wrap {
    padding-block: 8px;
  }
  .breadcrumb-wrap .mod-breadcrumbs,
  .breadcrumb-wrap .breadcrumb {
    font-size: .9rem;
  }
  .content-card .page-item > .page-link,
  .content-card .pagination li > a,
  .content-card .pagination li > span,
  .content-card .pager li > a,
  .content-card .pager li > span,
  .content-card .pagenav li > a,
  .content-card .pagenav li > span {
    min-width: 36px;
    min-height: 36px;
    padding: 6px 10px;
  }
}