/* ==========================================================================
   SNT ENTERPRISES — INDUSTRIAL SPEC-SHEET DESIGN SYSTEM
   Tech Stack: HTML5 / CSS3 / Bootstrap 5.3 CDN / jQuery 3.7 / GSAP 3.12
   Design Concept: Industrial Ledger / Material Catalogue / Spec-Sheet
   Zero gradients. Zero shadows. Zero rounded corners. Absolute precision.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS & BOOTSTRAP OVERRIDES
   -------------------------------------------------------------------------- */
/* Official Lenis Smooth Scroll Rules */
html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: clip !important;
}

.lenis.lenis-scrolling iframe {
  pointer-events: none;
}

html {
  overflow-x: clip;
}

:root {
  /* Logo-Derived Industrial Color Palette (Strictly Flat) */
  /* Primary Accent: Antique Industrial Gold / Brass (from Client Logo Spearhead & Bevels) */
  --gold: #C59B27;          /* Rich antique brass gold */
  --gold-dark: #A37E18;     /* Interactive hover state */
  --gold-light: #E8CF7C;    /* Highlights & meta on dark surfaces */
  --gold-subtle: rgba(197, 155, 39, 0.12);

  /* Primary Dark Surfaces: Midnight Navy (from Logo ENTERPRISES & Steel Shadows) */
  --navy: #0E1724;          /* Midnight Industrial Navy (replaces graphite) */
  --steel-navy: #1C2A3A;    /* Secondary dark / panels (replaces steel) */
  --navy-deep: #080E17;     /* Deepest midnight navy (replaces ink footer) */
  --slate-blue: #455767;    /* Slate metallic blue (from SNT monogram fill) */

  /* Backwards-Compatible Palette Aliases */
  --graphite: var(--navy);
  --steel: var(--steel-navy);
  --ink: var(--navy-deep);
  --copper: var(--gold);
  --copper-dark: var(--gold-dark);
  --copper-light: var(--gold-light);

  /* Light Surfaces: Cool Ice Steel & Crisp White */
  --alu: #EFF3F8;           /* Cool Ice Steel surface */
  --white: #FFFFFF;         /* Crisp catalogue background */
  --line: #D0DAE5;          /* 1px light hairline divider */
  --line-dark: #243548;     /* 1px dark hairline divider */
  --muted: #5A6B7C;         /* Secondary meta & caption text */
  --error: #B42318;         /* High-contrast validation alert */

  /* Typography Stack */
  --font-heading: 'Barlow Condensed', -apple-system, sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Spacing Scale (8px Grid) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;

  /* Layout & Navigation Dimensions */
  --container-max: 1280px;
  --header-height: 84px;
  --header-height-scrolled: 64px;

  /* Bootstrap Variable Overrides */
  --bs-primary: #C59B27;
  --bs-primary-rgb: 197, 155, 39;
  --bs-body-font-family: var(--font-body);
  --bs-body-font-size: 1.0625rem; /* 17px */
  --bs-body-line-height: 1.65;
  --bs-body-color: #0E1724;
  --bs-body-bg: #FFFFFF;
  --bs-border-radius: 0 !important;
  --bs-border-radius-sm: 0 !important;
  --bs-border-radius-lg: 0 !important;
  --bs-border-radius-xl: 0 !important;
  --bs-border-radius-2xl: 0 !important;
  --bs-border-radius-pill: 0 !important;
}

/* Hard zero-radius and zero-shadow enforcement across all elements */
*, *::before, *::after {
  border-radius: 0 !important;
  box-shadow: none !important;
}

/* --------------------------------------------------------------------------
   2. ACCESSIBILITY & FOCUS STATES
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background-color: var(--copper);
  color: var(--white);
  padding: 10px 20px;
  z-index: 10000;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: top 0.15s ease-in-out;
}
.skip-link:focus {
  top: 16px;
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

.section--graphite :focus-visible,
.section--steel :focus-visible,
.site-header :focus-visible,
.site-footer :focus-visible {
  outline: 2px solid var(--copper-light);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   3. BASE TYPOGRAPHY
   -------------------------------------------------------------------------- */
body {
  font-family: var(--font-body);
  color: var(--graphite);
  background-color: var(--white);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: inherit;
  margin-top: 0;
}

/* Uppercase via CSS strictly on H1/H2 (underlying text preserved) */
h1, .h1, h2, .h2 {
  text-transform: uppercase;
}

h1, .h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  line-height: 1.05;
}

h2, .h2 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.1;
}

h3, .h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.2;
  font-weight: 600;
}

h4, .h4 {
  font-size: 1.35rem;
  line-height: 1.25;
  font-weight: 600;
}

p {
  margin-bottom: 1.25rem;
  max-width: 68ch;
}

.lead-text {
  font-size: 1.25rem;
  line-height: 1.6;
  font-weight: 500;
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   4. BRAND IDENTITY (.brand)
   Official Client Logo & Industrial Spec Typography
   -------------------------------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  line-height: 1;
}

.brand__logo {
  height: 52px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  transition: height 0.2s ease, transform 0.2s ease;
}

.site-header.scrolled .brand__logo {
  height: 42px;
}

.brand__logo--lg {
  height: 64px;
}

.brand__text-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand__title,
.brand__text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1;
  transition: color 0.15s ease;
}

.brand__title--lg {
  font-size: 1.75rem;
}

.brand__tagline {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-top: 4px;
  line-height: 1;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--gold);
  color: var(--navy);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: 0.06em;
  user-select: none;
}

/* Light surface variant */
.brand--light .brand__title,
.brand--light .brand__text,
.section--white .brand .brand__title,
.section--white .brand .brand__text,
.section--alu .brand .brand__title,
.section--alu .brand .brand__text {
  color: var(--navy);
}

.brand--light .brand__tagline,
.section--white .brand .brand__tagline,
.section--alu .brand .brand__tagline {
  color: var(--gold-dark);
}

.brand:hover .brand__title,
.brand:hover .brand__text {
  color: var(--gold-light);
}

.brand--light:hover .brand__title,
.brand--light:hover .brand__text {
  color: var(--gold);
}

/* --------------------------------------------------------------------------
   5. SECTIONS & CONTAINER
   -------------------------------------------------------------------------- */
.container-snt {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  position: relative;
}

@media (max-width: 991px) {
  .section {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }
}

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

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

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

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

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

/* --------------------------------------------------------------------------
   6. UI UTILITIES & SPEC ELEMENTS
   -------------------------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--copper);
  margin-bottom: 0.75rem;
}

.eyebrow--light,
.section--graphite .eyebrow,
.section--steel .eyebrow,
.section--ink .eyebrow {
  color: var(--copper-light);
}

/* Dividers & Rules */
.rule {
  height: 1px;
  background-color: var(--line);
  border: 0;
  margin: 0;
  width: 100%;
  display: block;
}

.rule--dark {
  background-color: var(--line-dark);
}

.rule--copper {
  height: 3px;
  width: 56px;
  background-color: var(--copper);
  border: 0;
  margin: 1.25rem 0 1.75rem 0;
  display: block;
  transform-origin: left center;
}

/* Spec Strip (Key Meta Data Display) */
.spec-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.spec-strip__cell {
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-right: 1px solid var(--line-dark);
}

.spec-strip__cell:last-child {
  border-right: none;
}

.spec-strip__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--copper-light);
}

.spec-strip__value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--white);
  letter-spacing: 0.04em;
}

@media (max-width: 767px) {
  .spec-strip {
    grid-template-columns: 1fr;
  }
  .spec-strip__cell {
    border-right: none;
    border-bottom: 1px solid var(--line-dark);
  }
  .spec-strip__cell:last-child {
    border-bottom: none;
  }
}

/* --------------------------------------------------------------------------
   7. BUTTONS & INTERACTIVE CONTROLS
   -------------------------------------------------------------------------- */
.btn-snt,
.btn-snt-outline,
.btn-snt-outline-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  line-height: 1;
}

/* Primary Button (Copper) */
.btn-snt {
  background-color: var(--copper);
  border-color: var(--copper);
  color: var(--white);
}

.btn-snt:hover,
.btn-snt:focus {
  background-color: var(--copper-dark);
  border-color: var(--copper-dark);
  color: var(--white);
}

/* Secondary Button Outline (Dark text on light) */
.btn-snt-outline {
  background-color: transparent;
  border-color: var(--graphite);
  color: var(--graphite);
}

.btn-snt-outline:hover,
.btn-snt-outline:focus {
  background-color: var(--graphite);
  color: var(--white);
}

/* Secondary Button Outline Light (White outline on dark) */
.btn-snt-outline-light {
  background-color: transparent;
  border-color: var(--white);
  color: var(--white);
}

.btn-snt-outline-light:hover,
.btn-snt-outline-light:focus {
  background-color: var(--white);
  border-color: var(--white);
  color: var(--graphite);
}

/* Link Arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--copper);
  text-decoration: none;
  transition: gap 0.2s ease, color 0.15s ease;
}

.link-arrow i {
  transition: transform 0.2s ease;
}

.link-arrow:hover {
  color: var(--copper-dark);
  gap: 12px;
}

.link-arrow:hover i {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   8. SPEC LISTS & LEDGER TABLES
   -------------------------------------------------------------------------- */
/* Marker List with 8px Copper Square */
.marker-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.marker-list__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 1.125rem;
  line-height: 1.5;
}

.marker-list__item::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--copper);
  margin-top: 8px;
  flex-shrink: 0;
}

.section--graphite .marker-list__item,
.section--steel .marker-list__item {
  border-bottom-color: var(--line-dark);
}

/* Ledger Rows (Table-like rows with Mono number column) */
.ledger {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.section--steel .ledger,
.section--graphite .ledger {
  border-top-color: var(--line-dark);
}

.ledger__row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  padding: 24px 16px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.15s ease;
}

.ledger__row--with-thumb {
  grid-template-columns: 60px 100px 1fr auto;
  gap: 20px;
}

.ledger__thumb {
  width: 100px;
  height: 60px;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  flex-shrink: 0;
  position: relative;
  background-color: var(--steel);
}

.ledger__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.ledger__row:hover .ledger__thumb img {
  transform: scale(1.08);
}

.section--steel .ledger__row,
.section--graphite .ledger__row {
  border-bottom-color: var(--line-dark);
}

.ledger__row:hover {
  background-color: var(--graphite);
  color: var(--white);
}

.ledger__no {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--copper-light);
  transition: color 0.15s ease;
}

.ledger__row:hover .ledger__no {
  color: var(--copper);
}

.ledger__title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0;
}

.ledger__action {
  font-size: 1.5rem;
  color: var(--muted);
  transition: transform 0.2s ease, color 0.15s ease;
}

.ledger__row:hover .ledger__action {
  color: var(--white);
  transform: translate(4px, -4px);
}

@media (max-width: 767px) {
  .ledger__row--with-thumb {
    grid-template-columns: 45px 1fr auto;
    gap: 12px;
  }
  .ledger__thumb {
    display: none;
  }
}

@media (max-width: 575px) {
  .ledger__row {
    grid-template-columns: 50px 1fr auto;
    padding: 18px 8px;
  }
  .ledger__title {
    font-size: 1.25rem;
  }
}

/* --------------------------------------------------------------------------
   9. IMAGE SLOTS & PLACEHOLDERS (.img-slot)
   Pre-allocated responsive slots with aspect ratios, corner marks, and labels.
   -------------------------------------------------------------------------- */
.img-slot {
  position: relative;
  display: block;
  width: 100%;
  background-color: var(--steel);
  overflow: hidden;
  border: 1px solid var(--line-dark);
}

/* Aspect Ratio Helpers */
.img-slot--16-9 {
  aspect-ratio: 16 / 9;
}

.img-slot--4-3 {
  aspect-ratio: 4 / 3;
}

.img-slot--3-4 {
  aspect-ratio: 3 / 4;
}

.img-slot--1-1 {
  aspect-ratio: 1 / 1;
}

/* Top-Left Copper Corner Mark */
.img-slot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 14px;
  height: 14px;
  border-top: 3px solid var(--copper);
  border-left: 3px solid var(--copper);
  z-index: 2;
  pointer-events: none;
}

/* Bottom-Right Subdued Corner Mark */
.img-slot::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 14px;
  height: 14px;
  border-bottom: 2px solid var(--line-dark);
  border-right: 2px solid var(--line-dark);
  z-index: 2;
  pointer-events: none;
}

/* Inner Real Photo / Picture */
.img-slot picture,
.img-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Placeholder Label when real image is absent */
.img-slot__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  background-color: var(--graphite);
  position: relative;
}

.img-slot__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--copper-light);
  line-height: 1.4;
  background-color: rgba(16, 18, 20, 0.85);
  padding: 8px 12px;
  display: inline-block;
  align-self: flex-start;
  border-left: 2px solid var(--copper);
}

/* --------------------------------------------------------------------------
   10. FORM STYLING
   Square, flat, high-contrast, no glow, accessible focus rings.
   -------------------------------------------------------------------------- */
.form-group-snt {
  margin-bottom: 24px;
}

.form-label-snt {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: 8px;
}

.form-control-snt,
.form-select-snt {
  width: 100%;
  background-color: var(--white);
  border: 1px solid var(--line);
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 16px;
  line-height: 1.5;
  transition: border-color 0.15s ease;
}

.form-control-snt:focus,
.form-select-snt:focus {
  border-color: var(--graphite);
  outline: none;
}

.form-control-snt::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.form-error-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--error);
  margin-top: 6px;
  display: none;
}

.is-invalid .form-error-text {
  display: block;
}

.is-invalid .form-control-snt,
.is-invalid .form-select-snt {
  border-color: var(--error);
}

/* --------------------------------------------------------------------------
   11. DATA-CONFIG HIDING RULE
   Elements waiting for pending client data stay hidden until populated by JS.
   -------------------------------------------------------------------------- */
[data-config][hidden],
[data-config]:not([data-config-ready]) {
  display: none !important;
}

/* --------------------------------------------------------------------------
   12. ANIMATION & MOTION CONTROL
   -------------------------------------------------------------------------- */
/* Default static visibility for no-js or fallback */
html.no-js [data-reveal],
html.no-js [data-reveal-stagger],
html.no-js [data-line],
html.no-js [data-wipe] {
  opacity: 1 !important;
  transform: none !important;
}

/* When JS is enabled and motion is not reduced, prepare elements for GSAP */
@media (prefers-reduced-motion: no-preference) {
  html.js [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
  }
  
  html.js [data-line] {
    transform: scaleX(0);
    transform-origin: left center;
  }
}

/* Strict prefers-reduced-motion reset */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal], [data-reveal-stagger], [data-line], [data-wipe] {
    opacity: 1 !important;
    transform: none !important;
  }
}



/* --------------------------------------------------------------------------
   13. GLOBAL HEADER & NAVIGATION
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background-color: var(--graphite);
  border-bottom: 1px solid var(--line-dark);
  height: var(--header-height);
  transition: height 0.2s ease, background-color 0.2s ease;
  display: flex;
  align-items: center;
}

.site-header--scrolled {
  height: var(--header-height-scrolled);
}

.nav-link-snt {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #B5B9BE;
  text-decoration: none;
  padding: 8px 0;
  position: relative;
  transition: color 0.15s ease;
  display: inline-block;
  line-height: 1.2;
}

.nav-link-snt:hover,
.nav-link-snt:focus {
  color: var(--white);
}

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

.nav-link-snt.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--copper);
}

/* Offcanvas Navigation for Mobile (<992px) */
.offcanvas-snt {
  background-color: var(--graphite) !important;
  color: var(--white) !important;
  border-left: 1px solid var(--line-dark);
  width: 100% !important;
  max-width: 420px;
}

.offcanvas-snt .offcanvas-header {
  border-bottom: 1px solid var(--line-dark);
  padding: 20px 24px;
}

.offcanvas-snt .offcanvas-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.875rem; /* 30px */
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  text-decoration: none;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--copper-light);
  padding-left: 8px;
}

.mobile-nav-link.active::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--copper);
}

/* --------------------------------------------------------------------------
   14. GLOBAL FOOTER (.site-footer)
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--ink);
  color: #B5B9BE;
  border-top: 1px solid var(--line-dark);
}

.footer-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper-light);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-link {
  color: #A0A5AC;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.15s ease;
  display: inline-block;
}

.footer-link:hover,
.footer-link:focus {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--copper);
  text-underline-offset: 4px;
}

.footer-ledger-row {
  display: flex;
  flex-direction: column;
  padding: 8px 0;
  border-bottom: 1px solid var(--line-dark);
}

.footer-ledger-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.footer-ledger-value {
  color: var(--white);
  font-size: 0.9375rem;
  font-weight: 500;
}

.footer-ledger-value a {
  color: var(--white);
  text-decoration: none;
}

.footer-ledger-value a:hover {
  color: var(--copper-light);
  text-decoration: underline;
}

.footer-bottom-bar {
  border-top: 1px solid var(--line-dark);
  padding: 24px 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   15. UTILITIES: FLOATING CALL, PAGE HERO & CTA BAND
   -------------------------------------------------------------------------- */
.floating-call-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 52px;
  height: 52px;
  background-color: var(--copper);
  color: var(--white);
  display: none; /* Managed by main.js based on SITE.phone */
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  z-index: 1040;
  text-decoration: none;
  border: 1px solid var(--copper-dark);
}

.floating-call-btn:hover,
.floating-call-btn:focus {
  background-color: var(--copper-dark);
  color: var(--white);
}

@media (min-width: 992px) {
  .floating-call-btn {
    display: none !important;
  }
}

/* Reusable Page Hero (Compact) */
.page-hero {
  background-color: var(--graphite);
  color: var(--white);
  padding-top: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line-dark);
}

.page-hero__title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.05;
  margin-bottom: 0.5rem;
}

/* Reusable CTA Band */
.cta-band {
  background-color: var(--steel);
  color: var(--white);
  padding-top: 64px;
  padding-bottom: 64px;
  border-top: 1px solid var(--line-dark);
}

.cta-band__title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  line-height: 1.1;
  margin-bottom: 0.5rem;
}


/* --------------------------------------------------------------------------
   16. HOME PAGE SPECIFIC STYLES
   -------------------------------------------------------------------------- */
/* Hero Section */
.home-hero {
  background-color: var(--graphite);
  color: var(--white);
  min-height: calc(90vh - var(--header-height));
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-dark);
}

.home-hero__title {
  font-size: clamp(3rem, 6.5vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: 0.01em;
  margin-bottom: 1.5rem;
}

.home-hero__lead {
  font-size: clamp(1.125rem, 1.8vw, 1.35rem);
  line-height: 1.6;
  color: #D1D5DB;
  max-width: 58ch;
  margin-bottom: 2.25rem;
}

.home-hero__image-wrap {
  position: relative;
  height: 100%;
  min-height: 380px;
  border-left: 1px solid var(--copper);
}

@media (max-width: 991px) {
  .home-hero__image-wrap {
    min-height: 320px;
    border-left: none;
    border-top: 1px solid var(--copper);
    margin-top: 2rem;
  }
}

/* Product Hover-Swap Index */
.product-swap-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.product-swap-row {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  padding: 22px 16px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--graphite);
  transition: background-color 0.2s ease, color 0.15s ease;
}

.product-swap-row:hover,
.product-swap-row:focus,
.product-swap-row.is-active {
  background-color: var(--alu);
  color: var(--graphite);
}

.product-swap-row__letter {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--copper);
}

.product-swap-row__title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
}

.product-swap-row__arrow {
  font-size: 1.25rem;
  color: var(--muted);
  transition: transform 0.2s ease, color 0.15s ease;
}

.product-swap-row:hover .product-swap-row__arrow,
.product-swap-row:focus .product-swap-row__arrow {
  color: var(--copper);
  transform: translateX(4px);
}

.product-swap-stage {
  position: sticky;
  top: 104px;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: var(--steel);
  border: 1px solid var(--line-dark);
  overflow: hidden;
}

.product-swap-panel {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, visibility 200ms ease;
}

.product-swap-panel.is-active {
  opacity: 1;
  visibility: visible;
}

/* Mobile Product Thumbnail */
.product-swap-thumb {
  display: none;
}

@media (max-width: 991px) {
  .product-swap-stage {
    display: none;
  }
  .product-swap-thumb {
    display: block;
    margin-top: 10px;
  }
  .product-swap-row {
    display: block;
    padding: 18px 8px;
  }
  .product-swap-row__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}

/* Why Choose Stacked Points */
.why-choose-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-dark);
}

.why-choose-item {
  display: flex;
  align-items: baseline;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-dark);
}

.why-choose-item__no {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--copper-light);
  flex-shrink: 0;
  width: 32px;
}

.why-choose-item__text {
  font-size: 1.375rem; /* 22px */
  font-weight: 500;
  color: var(--white);
  line-height: 1.4;
  margin: 0;
}

@media (max-width: 575px) {
  .why-choose-item {
    gap: 16px;
    padding: 18px 0;
  }
  .why-choose-item__text {
    font-size: 1.125rem;
  }
}


/* --------------------------------------------------------------------------
   17. ABOUT US SPECIFIC STYLES
   -------------------------------------------------------------------------- */
/* Copper Offset Frame for Images */
.img-offset-frame {
  position: relative;
  border: 1px solid var(--copper);
  padding: 12px;
  background-color: var(--white);
}

.img-offset-frame .img-slot {
  height: 100%;
}

/* Two-Tone Mission & Vision Full-Bleed Grid */
.mission-vision-container {
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 991px) {
  .mission-vision-grid {
    grid-template-columns: 1fr;
  }
}

.panel-mission {
  background-color: var(--steel);
  color: var(--white);
  padding: 80px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--line-dark);
}

.panel-vision {
  background-color: var(--copper);
  color: var(--white);
  padding: 80px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

@media (max-width: 767px) {
  .panel-mission,
  .panel-vision {
    padding: 48px 24px;
    border-right: none;
  }
  .panel-mission {
    border-bottom: 1px solid var(--line-dark);
  }
}

.mission-vision-text {
  font-size: clamp(1.25rem, 2vw, 1.5rem); /* up to 24px */
  font-weight: 500;
  line-height: 1.5;
  margin-top: 1rem;
  margin-bottom: 0;
  max-width: 52ch;
  color: var(--white);
}

/* Large Marker List for Customer Segments */
.marker-list--large .marker-list__item {
  font-size: clamp(1.125rem, 1.8vw, 1.5rem); /* up to 24px */
  font-weight: 500;
  padding: 22px 0;
  color: var(--graphite);
}

.marker-list--large .marker-list__item::before {
  width: 10px;
  height: 10px;
  margin-top: 10px;
}


/* --------------------------------------------------------------------------
   18. SERVICES SPECIFIC STYLES (Scroll-Synced Sticky Layout)
   -------------------------------------------------------------------------- */
.services-layout {
  position: relative;
}

.service-sticky-panel {
  position: sticky;
  top: 110px;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: var(--steel);
  border: 1px solid var(--line-dark);
  overflow: hidden;
}

.service-sync-panel {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}

.service-sync-panel.is-active {
  opacity: 1;
  visibility: visible;
}

.service-numeral-badge {
  position: absolute;
  bottom: 0;
  left: 0;
  background-color: var(--copper);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 700;
  padding: 6px 18px;
  line-height: 1;
  z-index: 5;
  letter-spacing: 0.02em;
}

/* Service Spec Rows (All Services with High-Res Photos) */
.service-spec-row {
  scroll-margin-top: 110px;
}

.service-spec-row .img-slot {
  border: 1px solid var(--line);
}

.service-spec-row .img-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.service-spec-row:hover .img-slot img {
  transform: scale(1.03);
}

.service-spec-row:last-child {
  border-bottom: none !important;
}

.service-scroll-section {
  min-height: 65vh;
  padding: 80px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 110px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.service-scroll-section:last-child {
  border-bottom: none;
}

.service-scroll-section__no {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--copper);
  margin-bottom: 0.75rem;
  display: block;
}

.service-scroll-section__title {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.service-scroll-section__desc {
  font-size: 1.25rem;
  line-height: 1.65;
  color: #2B3036;
  max-width: 58ch;
  margin-bottom: 0;
}

@media (max-width: 991px) {
  .service-sticky-panel {
    display: none;
  }
  .service-scroll-section {
    min-height: auto;
    padding: 48px 0;
  }
}


/* --------------------------------------------------------------------------
   19. PRODUCTS CATALOGUE SPECIFIC STYLES
   -------------------------------------------------------------------------- */
/* Sticky Category Tab Bar */
.products-category-bar {
  position: sticky;
  top: var(--header-height);
  z-index: 1020;
  background-color: var(--steel);
  border-bottom: 1px solid var(--line-dark);
  transition: top 0.2s ease;
}

.site-header--scrolled ~ main .products-category-bar,
.site-header--scrolled + main .products-category-bar {
  top: var(--header-height-scrolled);
}

.category-nav-wrapper {
  display: flex;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.category-nav-wrapper::-webkit-scrollbar {
  display: none;
}

.category-tab-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 20px;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #B5B9BE;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
  line-height: 1;
  flex-shrink: 0;
}

.category-tab-link:hover,
.category-tab-link:focus {
  color: var(--white);
}

.category-tab-link.active {
  color: var(--white);
  border-bottom-color: var(--copper);
}

.category-tab-letter {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--copper-light);
}

/* Giant Category Code (A–F) */
.category-giant-letter {
  font-family: var(--font-mono);
  font-size: clamp(4.5rem, 8vw, 6.5rem);
  font-weight: 700;
  color: var(--line);
  line-height: 0.85;
  user-select: none;
  margin-bottom: 8px;
}

.section--alu .category-giant-letter {
  color: #C8CBD0;
}

/* 2-Column Catalogue Spec Grid */
.catalogue-spec-grid {
  border-top: 1px solid var(--line);
}

.section--alu .catalogue-spec-grid {
  border-top-color: #C8CBD0;
}

.catalogue-spec-col {
  border-right: 1px solid var(--line);
}

.section--alu .catalogue-spec-col {
  border-right-color: #C8CBD0;
}

@media (max-width: 767px) {
  .catalogue-spec-col {
    border-right: none;
  }
}

.catalogue-spec-item {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 56px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--graphite);
  transition: color 0.15s ease;
}

.section--alu .catalogue-spec-item {
  border-bottom-color: #C8CBD0;
}

.catalogue-spec-item::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--copper);
  flex-shrink: 0;
}

.catalogue-spec-item:hover {
  color: var(--copper-dark);
}

.catalogue-section {
  scroll-margin-top: 140px;
}


/* --------------------------------------------------------------------------
   20. CONTACT US SPECIFIC STYLES
   -------------------------------------------------------------------------- */
.contact-details-panel {
  background-color: var(--graphite);
  color: var(--white);
  padding: 48px;
  border: 1px solid var(--line-dark);
  height: 100%;
}

.contact-ledger-row {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-dark);
}

.contact-ledger-row:last-child {
  border-bottom: none;
}

.contact-ledger-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper-light);
  margin-bottom: 4px;
}

.contact-ledger-value {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--white);
  line-height: 1.4;
}

.contact-ledger-value a {
  color: var(--white);
  text-decoration: none;
  transition: color 0.15s ease;
}

.contact-ledger-value a:hover {
  color: var(--copper-light);
  text-decoration: underline;
}

.contact-form-panel {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--copper);
  padding: 48px;
}

@media (max-width: 767px) {
  .contact-details-panel,
  .contact-form-panel {
    padding: 32px 20px;
  }
}

/* Neutral Bordered Form Alerts */
.form-alert {
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 0.9375rem;
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: 12px;
}

.form-alert--success {
  background-color: #F8F9FA;
  border: 1px solid var(--copper);
  color: var(--graphite);
}

.form-alert--error {
  background-color: #FEF3F2;
  border: 1px solid var(--error);
  color: var(--error);
}