/* ==========================================================================
   TIRUPATI METACHEMS — Single-page industrial website
   Design system: graphite / warm paper / steel / copper
   ========================================================================== */

/* 1. TOKENS --------------------------------------------------------------- */
:root {
  --ink: #0d1013;
  --ink-900: #10141a;
  --ink-800: #141922;
  --ink-700: #1b222c;
  --ink-600: #242d39;
  --paper: #f5f3ec;
  --paper-2: #eeece2;
  --paper-3: #e6e2d6;
  --steel-100: #e8ecf0;
  --steel-200: #cbd4dc;
  --steel-300: #9aa6b2;
  --steel-400: #6b7684;
  --steel-500: #46505c;
  --copper: #bd7c3e;
  --copper-bright: #d99a52;
  --copper-ink: #7a4c22;
  --line-dark: rgba(233, 236, 239, 0.09);
  --line-light: rgba(13, 16, 19, 0.12);
  --text-dark: #161b21;
  --text-dark-mid: #3d4650;
  --text-dark-mut: #66707c;
  --text-light: #eef1f4;
  --text-light-mut: #9aa5b1;

  --font-sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --container: 1320px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --nav-h: 88px;
  --nav-h-scrolled: 68px;
  --radius: 3px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* 2. RESET ----------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

html:focus-within { scroll-behavior: smooth; }

html {
  overflow-x: clip;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

body.is-dark { background: var(--ink); }
body.is-light { background: var(--paper); }

img, picture, svg, video, iframe, canvas { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

::selection { background: var(--copper); color: #fff; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.08; letter-spacing: -0.015em; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink-900); }
::-webkit-scrollbar-thumb { background: #333c47; border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--copper); }

/* 3. UTILITIES -------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { position: relative; padding-block: clamp(5rem, 10vw, 8.5rem); }

.section--dark { background: var(--ink); color: var(--text-light); }
.section--dark-2 { background: var(--ink-800); color: var(--text-light); }
.section--paper { background: var(--paper); color: var(--text-dark); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }

/* Eyebrow label */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 1.6rem;
}
.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--copper);
  opacity: 0.7;
}
.eyebrow--light { color: var(--copper-bright); }

/* Section headings */
.h2 {
  font-size: clamp(2rem, 4.4vw, 3.55rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-transform: uppercase;
}
.h2 .accent { color: var(--copper); }

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.75;
  color: var(--text-dark-mid);
  max-width: 58ch;
}
.section--dark .lead { color: var(--text-light-mut); }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }

/* Buttons */
.btn {
  --btn-h: 54px;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  height: var(--btn-h);
  padding: 0 1.9rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
  white-space: nowrap;
}
.btn .arr { transition: transform 0.35s var(--ease); display: inline-block; }
.btn:hover .arr { transform: translateX(5px); }
.btn:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }

.btn--accent { background: var(--copper); color: #fff; }
.btn--accent:hover { background: var(--copper-bright); }

.btn--dark { background: var(--ink); color: var(--text-light); border-color: var(--line-dark); }
.btn--dark:hover { border-color: var(--copper); color: var(--copper-bright); }

.btn--outline-dark { border-color: var(--line-light); color: var(--text-dark); }
.btn--outline-dark:hover { border-color: var(--ink); background: var(--ink); color: var(--text-light); }

.btn--outline-light { border-color: var(--line-dark); color: var(--text-light); }
.btn--outline-light:hover { border-color: var(--copper-bright); color: var(--copper-bright); }

/* 4. TEXTURES & DECOR ------------------------------------------------------ */
.tech-grid {
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 80px 80px;
}
.tech-grid--light {
  background-image:
    linear-gradient(var(--line-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-light) 1px, transparent 1px);
}
.hatch {
  background-image: repeating-linear-gradient(-45deg, var(--line-dark) 0 1px, transparent 1px 9px);
}

/* fine top border line under navbar */
.section-border-top { border-top: 1px solid var(--line-dark); }

/* 5. NAVIGATION ------------------------------------------------------------ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  color: var(--text-light);
  transition: height 0.4s var(--ease), background 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  height: var(--nav-h-scrolled);
  background: rgba(13, 16, 19, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line-dark);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  z-index: 102;
}
.nav__mark {
  width: 40px;
  height: 40px;
  flex: none;
}
.nav__brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.nav__brand-name {
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.nav__brand-sub {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-light-mut);
  white-space: nowrap;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.4vw, 2.4rem);
}
.nav__links a {
  position: relative;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light-mut);
  padding-block: 6px;
  transition: color 0.3s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--copper-bright);
  transition: width 0.35s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active, .nav__links a.is-page-active { color: var(--text-light); }
.nav__links a:hover::after, .nav__links a.is-active::after, .nav__links a.is-page-active::after { width: 100%; }

.nav__cta { margin-left: 0.75rem; }

.nav__burger {
  display: none;
  width: 46px;
  height: 46px;
  position: relative;
  z-index: 102;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
}
.nav__burger span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 1.6px;
  background: var(--text-light);
  transform: translate(-50%, -50%);
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease);
}
.nav__burger span:nth-child(1) { transform: translate(-50%, calc(-50% - 5px)); }
.nav__burger span:nth-child(3) { transform: translate(-50%, calc(-50% + 5px)); }
.nav.is-open .nav__burger span:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translate(-50%, -50%) rotate(-45deg); }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 101;
  background: var(--ink-900);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 6rem var(--gutter) 3rem;
  opacity: 0;
  visibility: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transition: opacity 0.45s var(--ease), visibility 0.45s;
}
.mobile-menu.is-open { opacity: 1; visibility: visible; }
@supports (justify-content: safe center) {
  .mobile-menu { justify-content: safe center; }
}
.mobile-menu__close {
  position: fixed;
  top: 1.1rem;
  right: var(--gutter);
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  z-index: 2;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--text-light);
  font-size: 1.7rem;
  line-height: 1;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, border-color 0.3s, color 0.3s;
}
.mobile-menu.is-open .mobile-menu__close { opacity: 1; visibility: visible; }
.mobile-menu__close:hover { border-color: var(--copper-bright); color: var(--copper-bright); }
.mobile-menu a {
  display: block;
  font-size: clamp(1.7rem, 6vw, 2.6rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--text-light);
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line-dark);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), color 0.3s;
}
.mobile-menu.is-open a { opacity: 1; transform: none; }
.mobile-menu a:hover { color: var(--copper-bright); }
.mobile-menu a.is-page-active { color: var(--copper-bright); }
.mobile-menu .mobile-menu__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 2rem;
  padding: 0 1.9rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 0;
  border-bottom: 0;
}
.mobile-menu__meta {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-light-mut);
}
@media (max-height: 640px) {
  .mobile-menu { justify-content: flex-start; padding-top: 5rem; }
  .mobile-menu a { font-size: 1.45rem; padding: 0.35rem 0; }
  .mobile-menu__cta { margin-top: 1.25rem; }
}

/* 6. HERO ------------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  color: var(--text-light);
  overflow: hidden;
  background: var(--ink);
}
.hero__media {
  position: absolute;
  inset: -12% 0;
  z-index: 0;
  will-change: transform;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform;
}
.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(13, 16, 19, 0.62) 0%, rgba(13, 16, 19, 0.32) 34%, rgba(13, 16, 19, 0.55) 62%, var(--ink) 100%),
    radial-gradient(120% 90% at 75% 10%, rgba(189, 124, 62, 0.16) 0%, transparent 55%);
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6), transparent 75%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6), transparent 75%);
}
.hero__content {
  position: relative;
  z-index: 2;
  padding-top: var(--nav-h);
  padding-bottom: 6.5rem;
  width: 100%;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--copper-bright);
}
.hero__eyebrow::before { content: ""; width: 46px; height: 1px; background: var(--copper); }

.hero__title {
  margin-top: 1.6rem;
  font-size: clamp(2.7rem, 7.2vw, 6.4rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  max-width: 16ch;
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line > span { display: inline-block; transform: translateY(110%); transition: transform 1s var(--ease); }
.hero__title .accent {
  color: var(--copper-bright);
}
.hero__title .line.is-visible > span { transform: none; }

.hero__sub {
  margin-top: 1.8rem;
  max-width: 52ch;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.75;
  color: var(--text-light-mut);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.6rem;
}

.hero__scroll {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding-bottom: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--text-light-mut);
  writing-mode: horizontal-tb;
}
.hero__scroll::after {
  content: "";
  width: 1px;
  height: 52px;
  background: linear-gradient(to bottom, var(--copper), transparent);
  animation: scrollPulse 2.2s var(--ease) infinite;
}
@keyframes scrollPulse {
  0% { transform: scaleY(0); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* 6b. PAGE HERO (sub-pages) ------------------------------------------------- */
.page-hero {
  position: relative;
  min-height: 44vh;
  display: flex;
  align-items: center;
  color: var(--text-light);
  overflow: hidden;
  background: var(--ink-900);
}
.page-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), transparent 85%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.55), transparent 85%);
}
.page-hero__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 70% at 78% 12%, rgba(189, 124, 62, 0.18) 0%, transparent 60%);
}
.page-hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: calc(var(--nav-h) + 2.5rem);
  padding-bottom: 3.5rem;
}
.page-hero__crumb {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--text-light-mut);
}
.page-hero__crumb a { color: var(--text-light-mut); transition: color 0.3s; }
.page-hero__crumb a:hover { color: var(--copper-bright); }
.page-hero__crumb .sep { color: var(--copper); }
.page-hero__title {
  margin-top: 1.4rem;
  font-size: clamp(2.2rem, 5.4vw, 4.4rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  max-width: 18ch;
}
.page-hero__title .accent { color: var(--copper-bright); }
.page-hero__sub {
  margin-top: 1.4rem;
  max-width: 56ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.75;
  color: var(--text-light-mut);
}

/* 7. STATS STRIP ----------------------------------------------------------- */
.stats {
  background: var(--ink-900);
  color: var(--text-light);
  border-bottom: 1px solid var(--line-dark);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stats__item {
  padding: clamp(2.2rem, 4vw, 3.4rem) clamp(1.2rem, 2vw, 2rem);
  border-right: 1px solid var(--line-dark);
  position: relative;
}
.stats__item:first-child { border-left: 1px solid var(--line-dark); }
.stats__num {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--text-light);
}
.stats__num .suffix { color: var(--copper-bright); }
.stats__label {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-light-mut);
}
.stats__item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1s var(--ease) 0.3s;
}
.stats__item.is-visible::after { transform: scaleX(1); }

/* 7b. HOME HUB (page explorer) ------------------------------------------------- */
.hub { background: var(--paper); color: var(--text-dark); }
.hub__grid {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}
.hub__card {
  display: block;
  padding: clamp(1.8rem, 3vw, 2.6rem);
  border: 1px solid var(--line-light);
  background: var(--paper-2);
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease);
}
.hub__card:hover { border-color: var(--copper); background: var(--paper-3); }
.hub__card-top { display: flex; justify-content: space-between; align-items: center; }
.hub__card-num { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.2em; color: var(--text-dark-mut); }
.hub__card-arr { color: var(--copper); font-size: 1.4rem; transition: transform 0.35s var(--ease); }
.hub__card:hover .hub__card-arr { transform: translateX(6px); }
.hub__card-title { margin-top: 1.6rem; font-size: clamp(1.3rem, 2.4vw, 1.8rem); font-weight: 800; text-transform: uppercase; letter-spacing: -0.01em; color: var(--text-dark); }
.hub__card-desc { margin-top: 0.8rem; color: var(--text-dark-mut); font-size: 0.95rem; line-height: 1.7; }
.hub__more {
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  text-align: center;
}
.hub__more p { color: var(--text-dark-mut); font-size: 1.05rem; }
@media (max-width: 640px) {
  .hub__grid { grid-template-columns: 1fr; gap: 0.55rem; margin-top: 1.4rem; }
  .hub__card { padding: 0.9rem 0.85rem; }
  .hub__card-title { margin-top: 0.6rem; font-size: 0.88rem; }
  .hub__card-desc { margin-top: 0.35rem; font-size: 0.75rem; line-height: 1.45; }
}

/* 8. ABOUT ----------------------------------------------------------------- */
.about__media {
  position: relative;
  align-self: stretch;
  min-height: 520px;
}
.about__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.02);
}
.about__media-frame {
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-light);
  pointer-events: none;
}
.about__media-badge {
  position: absolute;
  left: -1px;
  bottom: -1px;
  background: var(--ink);
  color: var(--text-light);
  padding: 1.4rem 1.7rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.8;
}
.about__media-badge strong {
  display: block;
  font-family: var(--font-sans);
  font-size: 1.4rem;
  letter-spacing: 0;
  color: var(--copper-bright);
}

.about__quote {
  margin-top: 2rem;
  padding: 1.6rem 0 0;
  border-top: 1px solid var(--line-light);
  font-size: 1.22rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--text-dark);
  max-width: 40ch;
}
.about__quote span { color: var(--copper-ink); }

/* Timeline */
.timeline {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  border-left: 1px solid var(--line-light);
  padding-left: 0;
}
.timeline__item {
  position: relative;
  padding: 0 0 2rem 2.2rem;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--paper);
  border: 2px solid var(--copper);
  border-radius: 50%;
}
.timeline__year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper-ink);
}
.timeline__text { margin-top: 0.4rem; color: var(--text-dark-mid); max-width: 46ch; }

/* 9. PRODUCTS -------------------------------------------------------------- */
.products {
  background: var(--ink-800);
  color: var(--text-light);
}
.products__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.products__header .btn--accent { background: var(--copper); }
.products__header .btn--dark {
  background: var(--paper);
  color: var(--text-dark);
  border-color: rgba(189, 124, 62, 0.55);
}
.products__header .btn--dark:hover {
  background: var(--paper-3);
  border-color: var(--copper);
  color: var(--copper-ink);
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
}

.prod-card {
  position: relative;
  display: block;
  color: var(--text-light);
  overflow: hidden;
  background: var(--ink-700);
  border: 1px solid var(--line-dark);
}
.prod-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.prod-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,16,19,0.15) 0%, rgba(13,16,19,0.9) 100%);
}
.prod-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.05);
  transform: scale(1.02);
  transition: transform 1.1s var(--ease), filter 0.6s var(--ease);
}
.prod-card:hover .prod-card__media img { transform: scale(1.09); filter: saturate(0.95); }

.prod-card__body {
  position: relative;
  padding: 1.7rem 1.9rem 2rem;
  transition: transform 0.5s var(--ease);
}
.prod-card__num {
  position: absolute;
  top: 1.4rem;
  right: 1.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-light-mut);
}
.prod-card__title {
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  transition: transform 0.5s var(--ease);
}
.prod-card__desc {
  margin-top: 0.7rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-light-mut);
  max-width: 56ch;
}
.prod-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-light);
  background: rgba(238, 241, 244, 0.05);
  border: 1px solid rgba(238, 241, 244, 0.3);
  padding: 0.45rem 0.85rem;
}
.prod-card__explore {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--copper-bright);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}
.prod-card:hover .prod-card__explore { opacity: 1; transform: none; }
.prod-card:hover .prod-card__title { transform: translateY(-3px); }
.prod-card:hover .prod-card__body { transform: translateY(-6px); }

/* 10. PRODUCT DETAIL / MODAL ---------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  visibility: hidden;
}
.modal.is-open { visibility: visible; }
.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 13, 0.78);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.modal.is-open .modal__backdrop { opacity: 1; }

.modal__panel {
  position: relative;
  width: 100%;
  max-width: 1080px;
  max-height: 88svh;
  overflow: auto;
  background: var(--paper);
  color: var(--text-dark);
  transform: translateY(60px);
  transition: transform 0.5s var(--ease);
}
.modal.is-open .modal__panel { transform: none; }

.modal__head {
  position: relative;
  padding: clamp(2rem, 5vw, 3.2rem) clamp(1.5rem, 5vw, 3.5rem) 2rem;
  background: var(--ink-800);
  color: var(--text-light);
}
.modal__close {
  position: absolute;
  top: 1.2rem;
  right: 1.4rem;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--ink);
  border: 1px solid var(--line-dark);
  color: var(--text-light);
  font-size: 1.1rem;
  z-index: 2;
  transition: border-color 0.3s, color 0.3s;
}
.modal__close:hover { border-color: var(--copper-bright); color: var(--copper-bright); }
.modal__cat {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--copper-bright);
}
.modal__title { margin-top: 0.7rem; font-size: clamp(1.6rem, 3.4vw, 2.3rem); text-transform: uppercase; }
.modal__body { padding: clamp(1.6rem, 4vw, 3rem) clamp(1.5rem, 5vw, 3.5rem) 2.5rem; }
.modal__lede { font-size: 1.05rem; line-height: 1.75; color: var(--text-dark-mid); max-width: 70ch; }

.modal__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-top: 2.2rem; }
.modal__h {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--copper-ink);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line-light);
}
.modal__list li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-dark-mid);
}
.modal__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--copper);
}
.modal__foot {
  margin-top: 2.4rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line-light);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* 11. INDUSTRIES ----------------------------------------------------------- */
.industries { background: var(--ink); color: var(--text-light); }

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.6rem);
  margin-top: clamp(2.5rem, 5vw, 4rem);
}
.app {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  padding: 1.6rem 1.7rem;
  border: 1px solid var(--line-dark);
  background: rgba(20, 25, 34, 0.5);
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease), transform 0.4s var(--ease);
}
.app:hover { border-color: rgba(217, 154, 82, 0.5); background: var(--ink-800); transform: translateY(-4px); }
.app__icon { color: var(--copper-bright); flex: none; width: 30px; height: 30px; margin-top: 2px; }
.app__title { font-weight: 600; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.02em; }
.app__sub { margin-top: 0.3rem; font-size: 0.86rem; color: var(--text-light-mut); line-height: 1.6; }

.industries__gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}
.gal-item { position: relative; overflow: hidden; aspect-ratio: 3/4; }
.gal-item--wide { aspect-ratio: 4/3; }
.gal-item img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.75) contrast(1.05); transition: transform 1s var(--ease), filter 0.6s; }
.gal-item:hover img { transform: scale(1.06); filter: saturate(0.95); }
.gal-item::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(233, 236, 239, 0.08);
}

.expertise-callout {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding: clamp(2rem, 4vw, 3.2rem);
  border: 1px solid var(--line-dark);
  background:
    linear-gradient(rgba(20, 25, 34, 0.9), rgba(20, 25, 34, 0.9)),
    repeating-linear-gradient(-45deg, rgba(217,154,82,0.25) 0 1px, transparent 1px 8px);
}
.expertise-callout .h3 { font-size: clamp(1.5rem, 3vw, 2.2rem); text-transform: uppercase; }
.expertise-callout p { margin-top: 0.9rem; color: var(--text-light-mut); max-width: 72ch; }

/* 12. WHY ------------------------------------------------------------------- */
.why { background: var(--ink-900); color: var(--text-light); }
.why__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-dark); margin-top: clamp(2.5rem, 5vw, 4rem); }
.why__item { background: var(--ink-900); padding: clamp(1.8rem, 3vw, 2.6rem); transition: background 0.4s var(--ease); }
.why__item:hover { background: var(--ink-800); }
.why__icon { width: 38px; height: 38px; color: var(--copper-bright); margin-bottom: 1.3rem; }
.why__title { font-size: 1.05rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.why__desc { margin-top: 0.6rem; font-size: 0.9rem; color: var(--text-light-mut); line-height: 1.7; max-width: 34ch; }

/* 13. QUALITY --------------------------------------------------------------- */
.quality { background: var(--paper); color: var(--text-dark); }
.quality__badge {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1.2rem 1.6rem;
  border: 1px solid var(--line-light);
  background: var(--paper-2);
}
.quality__badge-mark { color: var(--copper-ink); flex: none; }
.quality__badge-text { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; line-height: 1.7; }
.quality__badge-text strong { display: block; font-family: var(--font-sans); font-size: 1rem; letter-spacing: 0.08em; color: var(--text-dark); }

.quality__list { margin-top: 2rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem 2rem; }
.quality__list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--text-dark-mid);
  font-size: 0.98rem;
}
.quality__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 7px;
  height: 7px;
  background: var(--copper);
}

/* 14. TECHNICAL ------------------------------------------------------------- */
.technical { background: var(--ink-800); color: var(--text-light); overflow: hidden; }
.tech-diagram {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
}
.tech-diagram svg { width: 100%; height: 100%; }
.tech-grid-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line-dark); margin-top: clamp(2.5rem, 5vw, 4rem); }
.tech-item { background: rgba(20, 25, 34, 0.7); padding: clamp(1.6rem, 3vw, 2.3rem); }
.tech-item__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--copper-bright);
}
.tech-item__title { margin-top: 0.5rem; font-size: 1.08rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.02em; }
.tech-item__desc { margin-top: 0.5rem; font-size: 0.9rem; color: var(--text-light-mut); line-height: 1.7; }

/* 15. MANUFACTURING ---------------------------------------------------------- */
.manufacturing { background: var(--paper); color: var(--text-dark); }
.manufacturing__map { position: relative; }
.manufacturing__map img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  display: block;
  border: 1px solid var(--line-light);
  background: var(--paper);
}
.manufacturing__map-note {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dark-mut);
}

.plant { border-top: 1px solid var(--line-light); padding-top: 1.6rem; margin-top: 1.6rem; }
.plant:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.plant__name { font-size: 1.5rem; font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em; }
.plant__role { margin-top: 0.4rem; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--copper-ink); }
.plant__desc { margin-top: 0.5rem; color: var(--text-dark-mid); max-width: 42ch; }

/* 16. VALUES MARQUEE ---------------------------------------------------------- */
.values {
  background: var(--ink);
  color: var(--text-light);
  padding-block: clamp(4rem, 8vw, 6.5rem);
  overflow: hidden;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.values__track {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  width: max-content;
  animation: marquee 38s linear infinite;
}
.values:hover .values__track { animation-play-state: paused; }
.values__word {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: var(--text-light);
}
.values__word em {
  font-style: normal;
  color: var(--copper-bright);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.5em;
  letter-spacing: 0.1em;
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* 17. FINAL CTA ---------------------------------------------------------------- */
.final-cta {
  position: relative;
  background: var(--ink-800);
  color: var(--text-light);
  overflow: hidden;
}
.final-cta__media { position: absolute; inset: 0; z-index: 0; }
.final-cta__media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.22; filter: saturate(0.6); }
.final-cta__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--ink-800) 0%, rgba(13,16,19,0.82) 100%);
}
.final-cta__content { position: relative; z-index: 2; text-align: center; }
.final-cta .h2 { max-width: 20ch; margin-inline: auto; }
.final-cta p { margin-top: 1.4rem; color: var(--text-light-mut); max-width: 52ch; margin-inline: auto; }
.final-cta__ctas { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 2.6rem; }

/* 17b. PAGE NAV (prev / next) ------------------------------------------------- */
.page-nav {
  background: var(--ink);
  color: var(--text-light);
  border-top: 1px solid var(--line-dark);
  padding: clamp(2rem, 4vw, 3.2rem) 0;
}
.page-nav__inner { display: flex; justify-content: center; align-items: center; gap: clamp(0.75rem, 2vw, 1.25rem); flex-wrap: wrap; }
.page-nav__link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.6rem;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.page-nav__link:hover { border-color: var(--copper); background: rgba(189, 124, 62, 0.08); }
.page-nav__link--next { flex-direction: row-reverse; text-align: right; }
.page-nav__link--next:hover .page-nav__arr { transform: translateX(4px); }
.page-nav__link--prev:hover .page-nav__arr { transform: translateX(-4px); }
.page-nav__arr { color: var(--copper-bright); font-size: 1.3rem; flex: none; transition: transform 0.3s var(--ease); }
.page-nav__k {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-light-mut);
  white-space: nowrap;
}
.page-nav__t { display: block; font-size: 1.08rem; font-weight: 700; margin-top: 0.25rem; color: var(--text-light); white-space: nowrap; }
@media (max-width: 640px) {
  .page-nav__link { padding: 0.8rem 1.1rem; gap: 0.7rem; }
  .page-nav__arr { font-size: 1.1rem; }
  .page-nav__k { font-size: 0.55rem; }
  .page-nav__t { font-size: 0.95rem; }
}

/* 18. CONTACT -------------------------------------------------------------------- */
.contact { background: var(--ink); color: var(--text-light); }
.contact__grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(2.5rem, 5vw, 5rem); align-items: start; }
.contact__card {
  border: 1px solid var(--line-dark);
  background: var(--ink-800);
  padding: clamp(1.8rem, 3vw, 2.6rem);
}
.contact__card + .contact__card { margin-top: 1rem; }
.contact__h {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--copper-bright);
  margin-bottom: 1rem;
}
.contact__value { font-size: 1.02rem; line-height: 1.75; font-weight: 500; }
.contact__value a:hover { color: var(--copper-bright); }
.contact__value .muted { color: var(--text-light-mut); font-weight: 400; }

.form { margin-top: 0; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form__field { margin-bottom: 1.1rem; }
.form__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-light-mut);
  margin-bottom: 0.5rem;
}
.form__input, .form__select, .form__textarea {
  width: 100%;
  background: var(--ink-900);
  border: 1px solid var(--line-dark);
  color: var(--text-light);
  padding: 0.9rem 1rem;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: border-color 0.3s, box-shadow 0.3s;
  -webkit-appearance: none;
  appearance: none;
}
.form__select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239aa5b1' fill='none' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.1rem center;
  padding-right: 2.6rem;
}
.form__input::placeholder, .form__textarea::placeholder { color: #5a6470; }
.form__input:focus, .form__select:focus, .form__textarea:focus {
  outline: none;
  border-color: var(--copper);
  box-shadow: 0 0 0 3px rgba(189, 124, 62, 0.18);
}
.form__textarea { resize: vertical; min-height: 130px; }
.form__note { margin-top: 1rem; font-size: 0.78rem; color: var(--text-light-mut); }
.form__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.6rem; }
.form__actions .btn { flex: 1 1 220px; justify-content: center; }
.btn--wa { background: #25d366; color: #fff; }
.btn--wa:hover { background: #1fbd5a; }
.btn--wa svg { width: 1.05em; height: 1.05em; flex: none; }
.form__input.is-invalid, .form__select.is-invalid, .form__textarea.is-invalid {
  border-color: rgba(211, 66, 66, 0.8);
  box-shadow: 0 0 0 3px rgba(211, 66, 66, 0.12);
}
.form-success { display: none; margin-top: 1.2rem; padding: 1rem 1.2rem; border: 1px solid rgba(46, 125, 50, 0.45); background: rgba(46, 125, 50, 0.1); color: #2e7d32; font-size: 0.9rem; }
.form-success.is-show { display: block; }

/* Map */
.map-wrap { position: relative; margin-top: 1rem; border: 1px solid var(--line-dark); background: var(--paper-2); }
.map-wrap iframe { width: 100%; height: 320px; border: 0; display: block; filter: grayscale(0.2) contrast(1.02); }
.map-open {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper-ink);
  transition: color 0.3s;
}
.map-open:hover { color: var(--copper); }
.map-open .arr { display: inline-block; transition: transform 0.3s var(--ease); }
.map-open:hover .arr { transform: translateX(4px); }

/* 19c. FLOATING ACTION BUTTONS -------------------------------------------------- */
.fab {
  position: fixed;
  right: 1.4rem;
  z-index: 90;
}
.fab--whatsapp { bottom: 1.4rem; }
.fab--call { bottom: calc(1.4rem + 66px); }
.fab a {
  position: relative;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 8px 24px rgba(13, 16, 19, 0.32);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}
.fab a:hover { transform: translateY(-3px); }
.fab a::after {
  content: attr(data-label);
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--ink);
  color: var(--text-light);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.45rem 0.7rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
}
.fab a:hover::after { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.fab svg { width: 26px; height: 26px; }
.fab--whatsapp a { background: #25d366; }
.fab--whatsapp a:hover { background: #1fbd5a; }
.fab--call a { background: var(--copper); }
.fab--call a:hover { background: var(--copper-bright); }
@media (pointer: coarse) {
  .fab a::after { display: none; }
}
@media (max-width: 640px) {
  .fab { right: 1rem; }
  .fab--whatsapp { bottom: 1rem; }
  .fab--call { bottom: calc(1rem + 62px); }
}

/* 19. FOOTER ----------------------------------------------------------------------- */
.footer {
  background: var(--ink-900);
  color: var(--text-light);
  border-top: 1px solid var(--line-dark);
  padding-top: clamp(3rem, 6vw, 5rem);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr 1.4fr;
  gap: clamp(2rem, 4vw, 4rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}
.footer__logo {
  display: block;
  width: 56px;
  height: 56px;
  margin-bottom: 1.1rem;
}
.footer__brand-name { font-size: 1.05rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.footer__brand-tag {
  margin-top: 1rem;
  color: var(--text-light-mut);
  font-size: 0.9rem;
  line-height: 1.75;
  max-width: 30ch;
}
.footer__h {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-light-mut);
  margin-bottom: 1.3rem;
}
.footer__links li { margin-bottom: 0.65rem; }
.footer__links a { color: var(--text-light-mut); font-size: 0.9rem; transition: color 0.3s, padding-left 0.3s var(--ease); }
.footer__links a:hover { color: var(--copper-bright); padding-left: 4px; }
.footer__contact li { margin-bottom: 0.65rem; font-size: 0.9rem; color: var(--text-light-mut); }
.footer__contact a:hover { color: var(--copper-bright); }
.footer__bottom {
  border-top: 1px solid var(--line-dark);
  padding: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light-mut);
}

/* 19b. CATALOG (modal content) --------------------------------------------------------- */
.catalog__chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dark-mut);
  border: 1px solid var(--line-light);
  padding: 0.5rem 0.9rem;
  border-radius: 2px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.chip:hover { border-color: var(--copper); color: var(--copper-ink); }
.chip.is-active { background: var(--ink); border-color: var(--ink); color: var(--text-light); }

.catalog__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.6rem;
  transition: opacity 0.22s var(--ease);
}
.pcard {
  text-align: left;
  border: 1px solid var(--line-light);
  background: var(--paper-2);
  padding: 1.5rem 1.6rem;
  display: block;
  width: 100%;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), transform 0.35s var(--ease);
}
.pcard:hover { border-color: var(--copper); background: var(--paper-3); transform: translateY(-3px); }
.pcard__name { display: block; font-weight: 700; font-size: 1.06rem; text-transform: uppercase; letter-spacing: 0.01em; }
.pcard__lede { display: block; margin-top: 0.45rem; font-size: 0.88rem; color: var(--text-dark-mut); line-height: 1.65; }
.pcard__go { display: block; margin-top: 0.9rem; font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--copper-ink); }

.pdetail__back {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dark-mut);
  margin-bottom: 1.6rem;
  transition: color 0.3s;
}
.pdetail__back:hover { color: var(--copper-ink); }
.pdetail__head { border: 1px solid var(--line-dark); }

/* 20. REVEAL ANIMATIONS -------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--d, 0s);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-line { display: block; overflow: hidden; }
.reveal-line > span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 1s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal-line.is-visible > span { transform: none; }

/* 21. CURSOR --------------------------------------------------------------------------- */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 300;
  pointer-events: none;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
}
.cursor-dot {
  width: 6px;
  height: 6px;
  background: #fff;
}
.cursor-ring {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  transition: width 0.3s var(--ease), height 0.3s var(--ease), border-color 0.3s;
}
.cursor-ring.is-hover { width: 58px; height: 58px; border-color: var(--copper-bright); }
@media (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }

/* 22. RESPONSIVE ------------------------------------------------------------------------ */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .industries__gallery { grid-template-columns: repeat(2, 1fr); }
  .gal-item { aspect-ratio: 4/3; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: block; }
}

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid-list { grid-template-columns: 1fr; }
  .modal__cols { grid-template-columns: 1fr; gap: 1.4rem; }
  .about__media { min-height: 380px; }
  .form__input, .form__select, .form__textarea { font-size: 16px; }
}

@media (max-width: 640px) {
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stats__item:nth-child(2) { border-right: 0; }
  .stats__item:nth-child(-n+2) { border-bottom: 1px solid var(--line-dark); }
  .stats__item { border-left: 1px solid var(--line-dark); }
  .stats__item:first-child { border-left: 0; }
  .stats__item { min-width: 0; }
  .stats__num { font-size: clamp(1.45rem, 6.5vw, 2.1rem); }
  .prod-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .why__grid { grid-template-columns: 1fr; }
  .quality__list { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__title { font-size: clamp(2.1rem, 10vw, 3.2rem); }
  .hero__scroll { display: none; }
  .nav__brand-sub { display: none; }
  .btn { height: 50px; padding: 0 1.4rem; font-size: 0.78rem; letter-spacing: 0.05em; }
}

@media (max-width: 380px) {
  .btn { padding: 0 1rem; font-size: 0.72rem; letter-spacing: 0.04em; }
}

/* 22b. BRIGHT CONTENT SECTIONS -------------------------------------------------- */
/* Convert the content sections from dark to the light paper theme while keeping
   the copper accent. Hero, stats strip, values marquee, final CTA and footer
   stay dark as structural anchors. */
.products, .industries, .why, .technical, .contact {
  --ink: var(--paper);
  --ink-700: var(--paper-2);
  --ink-800: var(--paper-2);
  --ink-900: var(--paper-3);
  --text-light: var(--text-dark);
  --text-light-mut: var(--text-dark-mut);
  --line-dark: var(--line-light);
  --copper-bright: var(--copper);
  background: var(--paper);
  color: var(--text-dark);
}
.industries .app { background: var(--paper-2); }
.industries .app:hover { border-color: rgba(189, 124, 62, 0.55); background: var(--paper-3); }
.expertise-callout { background: var(--paper-2); border-color: var(--line-light); }
.tech-item { background: var(--paper-2); }

/* 22c. DOC-SOURCE SPECS, CLIENTS & PLANT ADDRESSES ------------------------------ */
.h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em; }

.table-wrap { overflow-x: auto; margin-top: clamp(2.5rem, 5vw, 4rem); border: 1px solid var(--line-light); background: var(--paper-2); }
.spec-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 0.82rem; }
.spec-table th, .spec-table td { padding: 0.85rem 1.1rem; text-align: left; border-bottom: 1px solid var(--line-light); white-space: nowrap; }
.spec-table th { color: var(--copper); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.68rem; }
.spec-table td { color: var(--text-dark-mid); }
.spec-table tbody tr:hover td { background: var(--paper-3); }
@media (max-width: 640px) { .spec-table th, .spec-table td { padding: 0.6rem 0.7rem; font-size: 0.72rem; } }

.rcs-specs__cols { margin-top: clamp(2.5rem, 5vw, 4rem); gap: clamp(2rem, 5vw, 5rem); }

.check-list { list-style: none; margin-top: 1.4rem; display: grid; gap: 0.7rem; }
.check-list li { position: relative; padding-left: 1.9rem; color: var(--text-dark-mid); line-height: 1.7; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 0.42em; width: 0.62em; height: 0.62em; border: 1.5px solid var(--copper); transform: rotate(45deg); }

.plant__addr { margin-top: 0.5rem; font-size: 0.9rem; font-weight: 600; color: var(--text-dark); }

.clients__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-light); margin-top: clamp(2.5rem, 5vw, 4rem); }
.clients__item { background: var(--paper); padding: 1.3rem 1.5rem; font-size: 0.95rem; font-weight: 600; color: var(--text-dark); line-height: 1.4; display: flex; flex-direction: column; gap: 0.25rem; }
.clients__item span { font-weight: 500; color: var(--text-dark-mut); font-size: 0.8rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; }
.clients__grid--logo { grid-template-columns: repeat(4, 1fr); }
.clients__item--logo { align-items: center; justify-content: center; gap: 1.1rem; padding: clamp(2rem, 4vw, 3rem) 1.4rem; }
.clients__logo { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 4.5rem; }
.clients__logo img { max-width: 100%; max-height: 4.5rem; width: auto; height: auto; object-fit: contain; filter: grayscale(0); opacity: 1; transition: filter 0.45s var(--ease), opacity 0.45s var(--ease); }
.clients__item--logo:hover .clients__logo img { filter: grayscale(0); opacity: 1; }
@media (max-width: 900px) { .clients__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .clients__grid { grid-template-columns: 1fr; } }
.clients__more { margin-top: clamp(1.6rem, 3vw, 2.4rem); text-align: center; font-family: var(--font-sans); font-size: clamp(1rem, 2vw, 1.15rem); font-weight: 600; letter-spacing: 0.06em; text-transform: none; color: var(--text-dark); }

.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.cat-card { background: var(--paper-2); border: 1px solid var(--line-light); padding: clamp(1.6rem, 3vw, 2.2rem); display: flex; flex-direction: column; align-items: flex-start; transition: border-color 0.3s var(--ease), transform 0.3s var(--ease); }
.cat-card:hover { border-color: rgba(189, 124, 62, 0.55); transform: translateY(-3px); }
.cat-card__head { display: flex; justify-content: space-between; width: 100%; gap: 1rem; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dark-mut); }
.cat-card__type { color: var(--copper); font-weight: 600; }
.cat-card__title { margin-top: 1.2rem; font-size: clamp(1.25rem, 2.2vw, 1.6rem); font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em; line-height: 1.25; }
.cat-card__desc { margin-top: 0.8rem; color: var(--text-dark-mid); font-size: 0.92rem; line-height: 1.7; flex: 1; }
.cat-card .btn { margin-top: 1.6rem; }
@media (max-width: 900px) { .cat-grid { grid-template-columns: 1fr; } }

.footer__credit {
  padding: 0 0 1.6rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-light-mut);
}
.footer__credit a { color: var(--copper-bright); }
.footer__credit a:hover { text-decoration: underline; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .reveal-line, .hero__title .line > span { opacity: 1; transform: none; }
  .cursor-dot, .cursor-ring { display: none; }
}