/* ==========================================================================
   Heat Center - Official Design System & Stylesheet
   Crafted with Human Engineering Precision, Concentric Radii & Polished Micro-Interactions
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=El+Messiri:wght@500;600;700&family=Tajawal:wght@400;500;700;800&family=Outfit:wght@600;700;800&display=swap');

:root {
  /* Fonts */
  --font-sans: 'Tajawal', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'El Messiri', 'Tajawal', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-en: 'Outfit', sans-serif;

  /* Brand Signature Colors (Derived from official Heat Center Logo) */
  --color-brand-gold: #fec409;
  --color-brand-gold-dark: #e5ac00;
  --color-brand-gold-light: #fff8e1;

  /* Ember Flame Palette */
  --color-ember-50: #fff5ee;
  --color-ember-100: #ffe8d9;
  --color-ember-200: #ffcbb0;
  --color-ember-300: #ffa57d;
  --color-ember-400: #ff7844;
  --color-ember-500: #f2540e;
  --color-ember-600: #d93f04;
  --color-ember-700: #b32f03;
  --color-ember-800: #8a2404;
  --color-ember-900: #6b1d08;
  --color-ember-950: #3d0f05;

  /* Technical Ink Palette (HVAC Industrial Slate & Deep Charcoal) */
  --color-ink-50: #f8fafc;
  --color-ink-100: #f1f5f9;
  --color-ink-200: #e2e8f0;
  --color-ink-300: #cbd5e1;
  --color-ink-400: #94a3b8;
  --color-ink-500: #64748b;
  --color-ink-600: #475569;
  --color-ink-700: #334155;
  --color-ink-800: #1e293b;
  --color-ink-900: #0f172a;
  --color-ink-950: #080d1a;

  /* Aqua Palette (Plumbing, Hydronics & Pool Heating) */
  --color-aqua-50: #f0f9ff;
  --color-aqua-100: #e0f2fe;
  --color-aqua-200: #bae6fd;
  --color-aqua-300: #7dd3fc;
  --color-aqua-400: #38bdf8;
  --color-aqua-500: #0ea5e9;
  --color-aqua-600: #0284c7;
  --color-aqua-700: #0369a1;
  --color-aqua-800: #075985;
  --color-aqua-900: #0c4a6e;

  /* Surface Neutrals */
  --color-white: #ffffff;
  --color-card-border: rgba(15, 23, 42, 0.08);

  /* Shadows - Layered & Transparent for Natural Depth */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 4px -1px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.07), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 30px -10px rgba(15, 23, 42, 0.09), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
  --shadow-ember: 0 16px 36px -10px rgba(242, 84, 14, 0.38);
  --shadow-ember-lg: 0 24px 50px -12px rgba(242, 84, 14, 0.5);
  --shadow-gold: 0 10px 25px -5px rgba(254, 196, 9, 0.35);
  --shadow-ink: 0 25px 60px -20px rgba(8, 13, 26, 0.45);
  --shadow-fab: 0 16px 40px -10px rgba(37, 211, 102, 0.55);

  /* Concentric Radii Hierarchy (outer = inner + padding) */
  --radius-xs: 0.375rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.125rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Targeted Transitions (No generic transition: all) */
  --transition-fast: 0.16s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & RTL */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  direction: rtl;
  text-align: right;
  background-color: var(--color-white);
  color: var(--color-ink-700);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.68;
  overflow-x: hidden;
}

/* Typography Hierarchy & Wrapping */
h1, h2, h3, h4, h5, h6, .font-display {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--color-ink-950);
  line-height: 1.25;
  text-wrap: balance;
}

p, .service-card-desc, .section-desc, .faq-content, .service-detail-desc {
  text-wrap: pretty;
}

/* Tabular Numerals for Technical Stability */
.stat-num, .stat-item, .process-step-num, .spec-badge-val, .badge {
  font-variant-numeric: tabular-nums;
}

a {
  color: inherit;
  text-decoration: none;
  transition-property: color, background-color, border-color, box-shadow, transform;
  transition-duration: var(--transition-fast);
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Crisp Inset Image Outlines (prevents blurry boundary into cards) */
img, .service-card-media, .case-study-media, .gallery-media, .project-type-card-media {
  outline: 1px solid rgba(15, 23, 42, 0.08);
  outline-offset: -1px;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background-color: var(--color-ember-500);
  color: var(--color-white);
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-sm {
  max-width: 860px;
}

/* Background Heating Pattern (Thermal Waves, Radiators, PEX Loops & Solar Energy) */
.bg-heating-pattern,
.bg-grid {
  background-image: url('../images/heating-pattern.svg');
  background-size: 240px 240px;
  background-repeat: repeat;
}

.hero-heaters-backdrop {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-heaters-backdrop.svg');
  background-position: center bottom;
  background-repeat: no-repeat;
  background-size: 100% auto;
  pointer-events: none;
  opacity: 0.9;
}

.bg-radial-ember {
  background-image: radial-gradient(circle at 50% 0%, rgba(242, 84, 14, 0.12), transparent 65%);
}

.text-gradient-ember {
  background: linear-gradient(to left, #ff7844, #f2540e, #d93f04);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-full);
  padding: 0.4rem 1.15rem;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1;
}

.badge-ember {
  background-color: rgba(242, 84, 14, 0.08);
  color: var(--color-ember-600);
  border: 1px solid rgba(242, 84, 14, 0.22);
}

.badge-gold {
  background-color: rgba(254, 196, 9, 0.12);
  color: #b45309;
  border: 1px solid rgba(254, 196, 9, 0.35);
}

.badge-aqua {
  background-color: rgba(14, 165, 233, 0.08);
  color: var(--color-aqua-600);
  border: 1px solid rgba(14, 165, 233, 0.22);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: currentColor;
}

/* Buttons with Tactile Press State & 44px Hit Area */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border-radius: var(--radius-full);
  min-height: 46px;
  padding: 0.85rem 1.85rem;
  font-size: 0.94rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-align: center;
  white-space: nowrap;
  transition-property: transform, background-color, border-color, box-shadow, color;
  transition-duration: var(--transition-fast);
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(to left, var(--color-ember-500), var(--color-ember-600));
  color: var(--color-white);
  box-shadow: var(--shadow-ember);
}

.btn-primary:hover {
  background: linear-gradient(to left, var(--color-ember-400), var(--color-ember-500));
  box-shadow: var(--shadow-ember-lg);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-ink-800);
  border: 1px solid var(--color-ink-200);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background-color: var(--color-ink-50);
  border-color: var(--color-ink-300);
  transform: translateY(-2px);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-ember-600);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  background-color: rgba(255, 255, 255, 0.94);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink-600);
  min-height: 44px;
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  color: var(--color-ember-600);
}

.btn-icon-circle {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(15, 23, 42, 0.04);
  color: var(--color-ink-600);
  transition-property: transform, background-color, color;
  transition-duration: var(--transition-fast);
}

.btn-icon-circle:hover {
  color: var(--color-ember-600);
  background-color: rgba(242, 84, 14, 0.08);
  transform: translateY(-1px);
}

/* Header & Navigation with Official Logo Integration */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition-property: background-color, border-color, box-shadow;
  transition-duration: var(--transition-normal);
}

/* WordPress Admin Bar Compatibility - STRICT OVERRIDE */
html body.admin-bar .site-header,
body.admin-bar .site-header,
.admin-bar .site-header {
  top: 32px !important;
}

@media screen and (max-width: 782px) {
  html body.admin-bar .site-header,
  body.admin-bar .site-header,
  .admin-bar .site-header {
    top: 46px !important;
  }
}

html body.admin-bar .page-hero,
body.admin-bar .page-hero,
.admin-bar .page-hero {
  padding-top: calc(9rem + 32px) !important;
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: rgba(15, 23, 42, 0.06);
  box-shadow: 0 4px 25px -4px rgba(15, 23, 42, 0.05);
}

.header-container {
  width: 100%;
  max-width: 1440px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 5.25rem;
  gap: 1rem;
}

/* Brand Logo & Typography */
.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-logo-img {
  width: auto;
  height: 48px;
  max-width: 140px;
  object-fit: contain;
  background-color: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  filter: drop-shadow(0 2px 8px rgba(242, 84, 14, 0.22));
  flex-shrink: 0;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.brand-wrapper:hover .brand-logo-img {
  transform: scale(1.04);
  filter: drop-shadow(0 4px 14px rgba(242, 84, 14, 0.35));
}

.brand-names {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
}

.brand-name-ar {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-ink-950);
  line-height: 1.1;
  white-space: nowrap;
}

.brand-name-en {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-ember-600);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Desktop Nav Container */
.desktop-nav {
  display: none;
  align-items: center;
  background-color: rgba(15, 23, 42, 0.035);
  padding: 0.25rem 0.4rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(15, 23, 42, 0.06);
  list-style: none;
  margin: 0;
  flex-shrink: 1;
}

.desktop-nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
}

.desktop-nav li,
.desktop-nav .nav-has-dropdown,
.desktop-nav .nav-item-wrapper {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Nav Link Items - STRICT Single-Line (No Stacking/Wrapping) */
.desktop-nav-list > li > a,
.desktop-nav-list > li > .nav-item,
.desktop-nav .nav-has-dropdown > a {
  padding: 0.45rem 0.72rem;
  border-radius: var(--radius-full);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-ink-700);
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  text-decoration: none;
  white-space: nowrap !important;
  word-break: keep-all !important;
  line-height: 1;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.desktop-nav-list > li:hover > a,
.desktop-nav .nav-has-dropdown:hover > a,
.desktop-nav-list .nav-item:hover {
  color: var(--color-ink-950);
}

.desktop-nav-list > li.active > a,
.desktop-nav-list .nav-item.active,
.desktop-nav-list .current-menu-item > a,
.desktop-nav-list .current-menu-parent > a {
  background-color: rgba(15, 23, 42, 0.06);
  color: var(--color-ember-600);
  font-weight: 700;
}

/* Dropdown Arrow Indicator */
.desktop-nav .menu-item-has-children > a::after,
.desktop-nav .nav-has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-left: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
  margin-right: 4px;
  margin-top: -2px;
  flex-shrink: 0;
}

.desktop-nav .menu-item-has-children:hover > a::after,
.desktop-nav .nav-has-dropdown:hover > a::after {
  transform: rotate(135deg);
  color: var(--color-ember-600);
}

/* =========================================================
   HEADER DROPDOWN MENUS (أنواع السخانات & خدمات الشركة)
   ========================================================= */
.desktop-nav .sub-menu,
.desktop-nav .nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 1rem;
  box-shadow: 0 20px 45px -15px rgba(15, 23, 42, 0.18), 0 0 0 1px rgba(15, 23, 42, 0.04);
  padding: 0.5rem;
  min-width: 275px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.2s;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  text-align: right;
}

/* Hover Bridge */
.desktop-nav .sub-menu::before,
.desktop-nav .nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -10px;
  right: 0;
  left: 0;
  height: 10px;
}

.desktop-nav .menu-item-has-children:hover > .sub-menu,
.desktop-nav .menu-item-has-children:focus-within > .sub-menu,
.desktop-nav .nav-has-dropdown:hover > .nav-dropdown-menu,
.desktop-nav .nav-has-dropdown:focus-within > .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.desktop-nav .sub-menu li,
.desktop-nav .nav-dropdown-menu li {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
}

.desktop-nav .sub-menu a,
.desktop-nav .nav-dropdown-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-md);
  color: var(--color-ink-700);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap !important;
  word-break: keep-all !important;
  width: 100%;
  min-height: auto;
}

.desktop-nav .sub-menu a:hover,
.desktop-nav .nav-dropdown-menu a:hover {
  background-color: var(--color-ink-50);
  color: var(--color-ember-600);
  transform: translateX(-4px);
}

.desktop-nav .sub-menu .dropdown-view-all,
.desktop-nav .nav-dropdown-menu .dropdown-view-all {
  border-top: 1px solid var(--color-ink-100);
  margin-top: 0.35rem;
  padding-top: 0.6rem;
  font-weight: 700;
  color: var(--color-ember-600);
}

/* Header Right Actions */
.header-right {
  display: none;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.header-right .btn-primary {
  padding: 0.55rem 1.15rem !important;
  font-size: 0.85rem !important;
  white-space: nowrap !important;
}

/* Mobile Toggle Button */
.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-full);
  background-color: rgba(15, 23, 42, 0.05);
  border: none;
  color: var(--color-ink-800);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.mobile-toggle:hover {
  background-color: rgba(242, 84, 14, 0.1);
  color: var(--color-ember-600);
}

/* Mobile Nav Panel */
.mobile-nav-panel {
  position: fixed;
  top: 5.25rem;
  inset-inline: 0;
  bottom: 0;
  background-color: var(--color-white);
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  z-index: 99;
  overflow-y: auto;
  padding: 1.5rem;
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
}

body.admin-bar .mobile-nav-panel {
  top: calc(5.25rem + 32px);
}
@media screen and (max-width: 782px) {
  body.admin-bar .mobile-nav-panel {
    top: calc(5.25rem + 46px);
  }
}

.mobile-nav-panel.open {
  display: flex;
}

.mobile-link {
  display: block;
  padding: 0.95rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-ink-600);
}

.mobile-link.active {
  background-color: rgba(15, 23, 42, 0.05);
  color: var(--color-ember-600);
  font-weight: 700;
}

/* Mobile Dropdown Accordion */
.mobile-dropdown {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.06);
  background-color: var(--color-ink-50);
}

.mobile-dropdown-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 1.25rem;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-ink-800);
  background: none;
  border: none;
  cursor: pointer;
  text-align: right;
  transition: color 0.15s ease;
}

.mobile-dropdown-header .dropdown-chevron {
  transition: transform 0.2s ease;
}

.mobile-dropdown.open .mobile-dropdown-header .dropdown-chevron {
  transform: rotate(180deg);
  color: var(--color-ember-600);
}

.mobile-dropdown-content {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0 0.75rem 0.75rem 0.75rem;
}

.mobile-dropdown.open .mobile-dropdown-content {
  display: flex;
}

.mobile-dropdown-content a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--color-ink-700);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  background-color: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.04);
}

.mobile-dropdown-content a:hover {
  color: var(--color-ember-600);
}

/* =========================================================
   HEADER RESPONSIVE BREAKPOINTS
   ========================================================= */
@media (max-width: 1199px) {
  .desktop-nav {
    display: none !important;
  }
  .mobile-toggle {
    display: flex !important;
  }
  .header-right {
    display: none !important;
  }
}

@media (min-width: 1200px) {
  .desktop-nav {
    display: flex !important;
  }
  .header-right {
    display: flex !important;
  }
  .mobile-toggle {
    display: none !important;
  }
}

/* Compact layout for mid-sized laptops (1200px to 1380px) */
@media (min-width: 1200px) and (max-width: 1380px) {
  .header-container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .header-inner {
    gap: 0.5rem;
  }
  .brand-wrapper {
    gap: 0.5rem;
  }
  .brand-logo-img {
    height: 42px;
  }
  .brand-name-ar {
    font-size: 1.15rem;
  }
  .brand-name-en {
    font-size: 0.65rem;
  }
  .desktop-nav {
    padding: 0.2rem 0.3rem;
  }
  .desktop-nav-list > li > a,
  .desktop-nav-list .nav-item,
  .desktop-nav .nav-has-dropdown > a {
    padding: 0.4rem 0.55rem;
    font-size: 0.82rem;
    gap: 0.2rem;
  }
  .header-right {
    gap: 0.4rem;
  }
  .header-right .btn-icon-circle {
    display: none;
  }
  .header-right .btn-primary {
    padding: 0.48rem 0.95rem !important;
    font-size: 0.82rem !important;
  }
}

/* Page Hero Header (Subpages) */
.page-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--color-white);
  padding-top: 9.5rem;
  padding-bottom: 4.5rem;
  text-align: center;
}

.page-hero-box {
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  position: relative;
}

.page-hero-title {
  font-size: 2.45rem;
  font-weight: 900;
  color: var(--color-ink-950);
  line-height: 1.2;
}

.page-hero-desc {
  font-size: 1.1rem;
  color: var(--color-ink-500);
  line-height: 1.7;
  max-width: 42rem;
}

@media (min-width: 640px) {
  .page-hero {
    padding-top: 11.5rem;
  }
  .page-hero-title {
    font-size: 3.25rem;
  }
}

/* ==========================================================================
   Section Spacing & Master Rhythm (Human Engineered & Generous Spacing)
   ========================================================================== */
.section {
  padding: 6.5rem 0;
  position: relative;
}

.section-lg {
  padding: 8rem 0;
}

.section-sm {
  padding: 4.5rem 0;
}

.section-white {
  background-color: var(--color-white);
}

.section-muted {
  background-color: var(--color-ink-50);
  border-top: 1px solid var(--color-ink-200);
  border-bottom: 1px solid var(--color-ink-200);
}

.section-dark {
  background-color: var(--color-ink-950);
  color: var(--color-white);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.section-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.15rem;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.75rem;
}

@media (max-width: 991px) {
  .section {
    padding: 5rem 0;
  }
  .section-header {
    margin-bottom: 2.75rem;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 3.75rem 0;
  }
  .section-header {
    margin-bottom: 2rem;
  }
}

/* Master Grid Layouts */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}
@media (max-width: 1100px) {
  .systems-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .systems-grid {
    grid-template-columns: 1fr;
  }
}

.features-dark-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
@media (max-width: 991px) {
  .features-dark-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 580px) {
  .features-dark-grid {
    grid-template-columns: 1fr;
  }
}

.services-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
@media (max-width: 991px) {
  .services-summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .services-summary-grid {
    grid-template-columns: 1fr;
  }
}

.projects-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
@media (max-width: 991px) {
  .projects-showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .projects-showcase-grid {
    grid-template-columns: 1fr;
  }
}

.why-pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
@media (max-width: 991px) {
  .why-pillars-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 580px) {
  .why-pillars-grid {
    grid-template-columns: 1fr;
  }
}

.why-pillar-card {
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}
.why-pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 84, 14, 0.3);
}

.why-pillar-icon {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-md);
  background: var(--color-ember-50);
  color: var(--color-ember-600);
  border: 1px solid var(--color-ember-200);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  flex-shrink: 0;
}

.about-master-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}
@media (max-width: 991px) {
  .about-master-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.project-card {
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(242, 84, 14, 0.35);
}

.project-card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-ink-100);
}
.project-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.project-card:hover .project-card-img {
  transform: scale(1.05);
}

.project-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.75rem;
}

/* Section Headings */
.section-header-legacy {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  max-width: 44rem;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-ink-950);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-ink-500);
  line-height: 1.7;
}

@media (min-width: 640px) {
  .section-title {
    font-size: 2.45rem;
  }
}

/* Engineering Trust Bar / Specs Strip (Human Craft Detail) */
.engineering-trust-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  background-color: var(--color-white);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
  box-shadow: var(--shadow-sm);
  margin-top: 2.5rem;
}

@media (min-width: 768px) {
  .engineering-trust-bar {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.trust-icon-box {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-md);
  background-color: rgba(254, 196, 9, 0.12);
  color: #b45309;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-item:nth-child(2) .trust-icon-box {
  background-color: rgba(242, 84, 14, 0.1);
  color: var(--color-ember-600);
}

.trust-item:nth-child(3) .trust-icon-box {
  background-color: rgba(14, 165, 233, 0.1);
  color: var(--color-aqua-600);
}

.trust-item:nth-child(4) .trust-icon-box {
  background-color: rgba(34, 197, 94, 0.1);
  color: #15803d;
}

.trust-text {
  display: flex;
  flex-direction: column;
}

.trust-title {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--color-ink-950);
}

.trust-subtitle {
  font-size: 0.78rem;
  color: var(--color-ink-500);
}

/* Concentric Service Cards (Concentric Radius: outer = inner + padding) */
.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  border-radius: var(--radius-xl); /* outer: 24px */
  padding: 0.85rem;                /* padding: 14px */
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-xs);
  transition-property: transform, box-shadow, border-color;
  transition-duration: var(--transition-normal);
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 84, 14, 0.3);
}

.service-card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: calc(var(--radius-xl) - 0.5rem); /* inner: 16px */
  background-color: var(--color-ink-50);
}

.service-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition-property: transform;
  transition-duration: var(--transition-slow);
}

.service-card:hover .service-card-img {
  transform: scale(1.05);
}

.service-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 13, 26, 0.72), rgba(8, 13, 26, 0.08), transparent);
  pointer-events: none;
}

.service-card-icon {
  position: absolute;
  bottom: 0.85rem;
  right: 0.85rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.service-card-icon.ember {
  background-color: rgba(242, 84, 14, 0.25);
  color: #fff;
  border: 1px solid rgba(242, 84, 14, 0.4);
}

.service-card-icon.aqua {
  background-color: rgba(14, 165, 233, 0.25);
  color: #fff;
  border: 1px solid rgba(14, 165, 233, 0.4);
}

.service-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem 0.5rem 0.5rem;
  gap: 0.85rem;
}

.service-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-ink-950);
}

.service-card-desc {
  font-size: 0.92rem;
  color: var(--color-ink-500);
  line-height: 1.65;
}

.service-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-top: 0.35rem;
}

.service-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: var(--color-ink-600);
}

.service-feature-item svg {
  width: 18px;
  height: 18px;
  min-width: 18px;
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--color-ember-500);
}

.service-card-footer {
  margin-top: auto;
  padding-top: 1rem;
}

/* Engineering Comparison Matrix (Human Expert Component) */
.comparison-matrix-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-card-border);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  margin-top: 3.5rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 0.95rem;
}

.comparison-table th {
  background-color: var(--color-ink-900);
  color: var(--color-white);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  border-bottom: 2px solid var(--color-ember-500);
}

.comparison-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--color-ink-100);
  color: var(--color-ink-700);
  vertical-align: middle;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:nth-child(even) td {
  background-color: var(--color-ink-50);
}

.comparison-table .highlight-col {
  font-weight: 700;
  color: var(--color-ink-950);
}

/* Detailed Services Sections (Alternate Row Layout) */
.service-detail-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
  grid-template-columns: 1fr;
  margin-bottom: 5rem;
}

@media (min-width: 1024px) {
  .service-detail-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-detail-grid.reversed .service-detail-media {
    order: 2;
  }
  .service-detail-grid.reversed .service-detail-info {
    order: 1;
  }
}

.service-detail-media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.service-detail-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-detail-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.service-detail-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-ink-950);
}

.service-detail-desc {
  font-size: 1.05rem;
  color: var(--color-ink-500);
  line-height: 1.75;
}

/* Stats Counter Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-card-border);
  background-color: var(--color-ink-50);
  padding: 2.25rem 2rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.25rem;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.65rem;
  font-weight: 900;
  color: var(--color-ink-950);
  line-height: 1;
}

.stat-num span {
  color: var(--color-ember-500);
}

.stat-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-ink-500);
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Project Types Cards */
.project-type-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-card-border);
  background-color: var(--color-white);
  box-shadow: var(--shadow-xs);
  transition-property: transform, box-shadow;
  transition-duration: var(--transition-normal);
}

.project-type-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-type-card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.project-type-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition-property: transform;
  transition-duration: var(--transition-slow);
}

.project-type-card:hover .project-type-card-media img {
  transform: scale(1.05);
}

.project-type-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Case Study Grid */
.case-study-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-card-border);
  background-color: var(--color-white);
  box-shadow: var(--shadow-xs);
  transition-property: transform, box-shadow;
  transition-duration: var(--transition-normal);
}

.case-study-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.case-study-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.case-study-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-study-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.65rem;
}

.case-study-location {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--color-ink-500);
  margin-top: auto;
  padding-top: 0.85rem;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  background-color: var(--color-white);
  overflow: hidden;
  transition-property: border-color, box-shadow;
  transition-duration: var(--transition-fast);
}

.faq-item.open {
  border-color: rgba(242, 84, 14, 0.35);
  box-shadow: 0 6px 20px -3px rgba(242, 84, 14, 0.08);
}

.faq-header {
  width: 100%;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.65rem;
  background: none;
  border: none;
  text-align: right;
  cursor: pointer;
  color: var(--color-ink-950);
}

.faq-question {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
}

.faq-icon {
  width: 20px;
  height: 20px;
  min-width: 20px;
  flex-shrink: 0;
  color: var(--color-ember-500);
  transition-property: transform;
  transition-duration: var(--transition-normal);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition-property: max-height;
  transition-duration: var(--transition-normal);
}

.faq-content {
  padding: 0 1.65rem 1.5rem;
  font-size: 0.98rem;
  color: var(--color-ink-500);
  line-height: 1.75;
}

/* Gallery Filter & Grid */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-full);
  min-height: 44px;
  padding: 0.55rem 1.35rem;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid rgba(242, 84, 14, 0.2);
  background-color: transparent;
  color: var(--color-ember-600);
  transition-property: background-color, border-color, color, box-shadow, transform;
  transition-duration: var(--transition-fast);
}

.filter-btn:active {
  transform: scale(0.97);
}

.filter-btn:hover {
  background-color: rgba(242, 84, 14, 0.08);
}

.filter-btn.active {
  background-color: var(--color-ember-500);
  border-color: var(--color-ember-500);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.filter-btn.aqua {
  border-color: rgba(14, 165, 233, 0.25);
  color: var(--color-aqua-600);
}

.filter-btn.aqua:hover {
  background-color: rgba(14, 165, 233, 0.08);
}

.filter-btn.aqua.active {
  background-color: var(--color-aqua-500);
  border-color: var(--color-aqua-500);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
}

.gallery-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.gallery-item {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-card-border);
  background-color: var(--color-ink-50);
  box-shadow: var(--shadow-xs);
  transition-property: transform, box-shadow;
  transition-duration: var(--transition-normal);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.gallery-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.gallery-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition-property: transform;
  transition-duration: var(--transition-slow);
}

.gallery-item:hover .gallery-media img {
  transform: scale(1.05);
}

/* Solar Callout Banner */
.solar-banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #d93f04, #f2540e, #f59e0b);
  padding: 3.25rem 2.25rem;
  color: var(--color-white);
  box-shadow: var(--shadow-ember);
}

.solar-banner-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}

@media (min-width: 1024px) {
  .solar-banner-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: right;
  }
}

/* Process Steps Flow */
.process-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.process-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-card-border);
  background-color: var(--color-ink-50);
  padding: 1.75rem;
}

.process-step-num {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 900;
  color: rgba(242, 84, 14, 0.35);
  line-height: 1;
}

/* CTA Banner */
.cta-banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-ink-900), var(--color-ink-950));
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4rem 2rem;
  text-align: center;
}

.cta-banner-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  max-width: 44rem;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner h2 {
  color: var(--color-white);
  font-size: 2.25rem;
  font-weight: 900;
}

.cta-banner p {
  color: var(--color-ink-300);
  font-size: 1.08rem;
}

/* Forms */
.form-card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-card-border);
  background-color: var(--color-ink-50);
  padding: 2.25rem;
}

.form-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-full {
    grid-column: span 2;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: right;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-ink-700);
}

.form-control {
  width: 100%;
  min-height: 46px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(15, 23, 42, 0.12);
  background-color: var(--color-white);
  padding: 0.85rem 1.15rem;
  font-size: 0.95rem;
  color: var(--color-ink-950);
  outline: none;
  transition-property: border-color, box-shadow;
  transition-duration: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-ember-500);
  box-shadow: 0 0 0 3px rgba(242, 84, 14, 0.18);
}

/* Floating WhatsApp FAB with 44+ Hit Area */
.whatsapp-fab {
  position: fixed;
  bottom: 1.75rem;
  left: 1.75rem;
  z-index: 90;
  width: 54px;
  height: 54px;
  min-width: 54px;
  min-height: 54px;
  border-radius: var(--radius-full);
  background-color: #25d366;
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-fab);
  transition-property: transform, box-shadow;
  transition-duration: var(--transition-normal);
}

.whatsapp-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 20px 45px -10px rgba(37, 211, 102, 0.75);
}

.whatsapp-fab:active {
  transform: scale(0.95);
}

.whatsapp-fab svg {
  width: 28px;
  height: 28px;
}

/* Site Footer with Official Brand Logo */
.site-footer {
  position: relative;
  overflow: hidden;
  background-color: var(--color-ink-950);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--color-ink-300);
  padding-top: 5rem;
  padding-bottom: 2.5rem;
}

.footer-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  }
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.92rem;
  color: var(--color-ink-300);
  min-height: 28px;
  display: inline-flex;
  align-items: center;
}

.footer-link:hover {
  color: var(--color-brand-gold);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--color-ink-300);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  min-width: 18px;
  flex-shrink: 0;
  color: var(--color-brand-gold);
  margin-top: 0.25rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--color-ink-200);
  display: flex;
  align-items: center;
  justify-content: center;
  transition-property: background-color, color, transform;
  transition-duration: var(--transition-fast);
}

.social-btn:hover {
  background-color: var(--color-ember-500);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer-bottom {
  margin-top: 4.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-ink-400);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* Subpage Utilities */
@media (min-width: 1024px) {
  .lg-grid-2 {
    grid-template-columns: 1.15fr 0.85fr !important;
  }
  .lg-grid-form {
    grid-template-columns: 1.15fr 0.85fr !important;
  }
}


/* Master Landing Page: Lead Form & Sizer Responsiveness */
@media (max-width: 768px) {
  .lead-form-grid {
    grid-template-columns: 1fr !important;
  }
  #sizerUsersGroup, #sizerPropertyGroup {
    grid-template-columns: 1fr !important;
  }
}
.sizer-user-btn, .sizer-prop-btn {
  transition: all 0.2s ease-in-out;
}
.sizer-user-btn:hover, .sizer-prop-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}


/* Master Components & Sizer System */
.sizer-container {
  max-width: 54rem;
  margin: 2.5rem auto 0;
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: 1.5rem;
  padding: 2.5rem;
  box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06);
  position: relative;
}

@media (max-width: 640px) {
  .sizer-container {
    padding: 1.25rem;
    border-radius: 1rem;
  }
}

.sizer-btn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
}

@media (max-width: 640px) {
  .sizer-btn-grid {
    grid-template-columns: 1fr;
  }
}

.sizer-user-btn, .sizer-prop-btn {
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.sizer-user-btn.active, .sizer-prop-btn.active {
  border: 2px solid var(--color-ember-500) !important;
  background: rgba(249, 115, 22, 0.08) !important;
  color: var(--color-ember-700) !important;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.12);
}

.sizer-user-btn:not(.active), .sizer-prop-btn:not(.active) {
  border: 1px solid var(--color-ink-200);
  background: #ffffff;
  color: var(--color-ink-700);
}

.sizer-user-btn:hover:not(.active), .sizer-prop-btn:hover:not(.active) {
  border-color: var(--color-ink-300);
  background: var(--color-ink-50);
  transform: translateY(-2px);
}

.sizer-result-card {
  margin-top: 2rem;
  background: linear-gradient(135deg, rgba(255, 247, 237, 0.85) 0%, #ffffff 100%);
  border: 1.5px solid var(--color-ember-200);
  border-radius: 1.25rem;
  padding: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.06);
}

/* Master Lead Form */
.lead-form-container {
  max-width: 52rem;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: 1.75rem;
  padding: 2.75rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

@media (max-width: 640px) {
  .lead-form-container {
    padding: 1.5rem;
    border-radius: 1.25rem;
  }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-ink-800);
}

.form-input, .form-select {
  width: 100%;
  padding: 0.85rem 1.15rem;
  border-radius: 0.75rem;
  border: 1.5px solid var(--color-ink-200);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background: #ffffff;
  color: var(--color-ink-900);
  transition: all 0.2s ease;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-ember-500);
  box-shadow: 0 0 0 3.5px rgba(249, 115, 22, 0.15);
}

/* System Showcase Cards */
.system-card {
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: 1.5rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

.system-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.1);
  border-color: var(--color-ember-300);
}

.system-card-img-wrap {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
  background: var(--color-ink-100);
}

.system-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.system-card:hover .system-card-img {
  transform: scale(1.06);
}

.system-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.system-card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-ink-900);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.system-specs-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.system-specs-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-ink-600);
}

/* Feature Item Dark */
.feature-box-dark {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.25rem;
  padding: 1.75rem;
  transition: all 0.3s ease;
}

.feature-box-dark:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(249, 115, 22, 0.4);
  transform: translateY(-4px);
}

/* ==========================================================================
   Single Project & Portfolio Styling (Heat Center Engineering Case Study)
   ========================================================================== */

.project-single-hero {
  padding-top: 8rem;
  padding-bottom: 3.5rem;
  background: radial-gradient(circle at 10% 20%, rgba(242, 84, 14, 0.05), transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(254, 196, 9, 0.05), transparent 40%),
              #ffffff;
  border-bottom: 1px solid var(--color-ink-200);
  position: relative;
  overflow: hidden;
}

.project-breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-ink-500);
  margin-bottom: 1.25rem;
}
.project-breadcrumbs a {
  color: var(--color-ink-600);
  text-decoration: none;
  transition: color 0.2s;
}
.project-breadcrumbs a:hover {
  color: var(--color-ember-600);
}
.project-breadcrumbs .sep {
  color: var(--color-ink-300);
}

.project-meta-ribbon {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.project-meta-card {
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: transform 0.2s, border-color 0.2s;
}
.project-meta-card:hover {
  transform: translateY(-2px);
  border-color: rgba(242, 84, 14, 0.4);
}
.project-meta-card-label {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--color-ink-500);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.project-meta-card-val {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--color-ink-950);
}

/* Two Column Layout */
.project-content-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding: 3.5rem 0 6rem;
}
@media (min-width: 1024px) {
  .project-content-layout {
    grid-template-columns: minmax(0, 1fr) 360px;
  }
}

.project-featured-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
  background: var(--color-ink-900);
  margin-bottom: 2.5rem;
}
.project-featured-visual img {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
  display: block;
}
.project-verified-badge {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  background: rgba(8, 13, 26, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-md);
}

/* Case Study Blocks */
.project-case-section {
  margin-bottom: 2.5rem;
}
.project-case-heading {
  font-size: 1.35rem;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--color-ink-950);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.project-case-heading::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.35rem;
  background: var(--color-ember-600);
  border-radius: 2px;
}
.project-case-box {
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-xs);
  line-height: 1.8;
  color: var(--color-ink-800);
  font-size: 1.02rem;
}
.project-case-box p {
  margin-bottom: 0.75rem;
}
.project-case-box p:last-child {
  margin-bottom: 0;
}

/* Feature Checkpoints */
.project-features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
  margin-top: 1rem;
}
.project-feature-item {
  background: var(--color-ink-50);
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-ink-900);
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.project-feature-item svg {
  color: var(--color-ember-600);
  flex-shrink: 0;
}

/* Specs Table */
.project-specs-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 1rem;
}
.project-specs-table th,
.project-specs-table td {
  padding: 0.9rem 1.25rem;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-ink-200);
}
.project-specs-table tr:last-child th,
.project-specs-table tr:last-child td {
  border-bottom: none;
}
.project-specs-table th {
  background: var(--color-ink-50);
  color: var(--color-ink-700);
  font-weight: 800;
  width: 35%;
  text-align: right;
  border-left: 1px solid var(--color-ink-200);
}
.project-specs-table td {
  background: #ffffff;
  color: var(--color-ink-950);
  font-weight: 700;
}

/* Gallery Grid */
.project-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}
.project-gallery-item {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: var(--color-ink-100);
  border: 1px solid var(--color-ink-200);
  box-shadow: var(--shadow-xs);
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}
.project-gallery-item:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
  border-color: var(--color-ember-500);
}
.project-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.project-gallery-item:hover img {
  transform: scale(1.08);
}
.project-gallery-zoom {
  position: absolute;
  inset: 0;
  background: rgba(8, 13, 26, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
  color: #ffffff;
}
.project-gallery-item:hover .project-gallery-zoom {
  opacity: 1;
}

/* Sidebar Cards */
.project-sidebar {
  position: relative;
}
.project-sidebar-sticky {
  position: sticky;
  top: 6rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.project-sidebar-card {
  background: #ffffff;
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.project-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 13, 26, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 3;
}
.project-card:hover .project-card-overlay {
  opacity: 1;
}
.btn-view-pill {
  background: #ffffff;
  color: var(--color-ink-950);
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  box-shadow: var(--shadow-md);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transform: translateY(4px);
  transition: transform 0.25s ease;
}
.project-card:hover .btn-view-pill {
  transform: translateY(0);
}