/* Surya Vinyl — industrial film & fill media */
:root {
  --ink: #0b1520;
  --slate: #132636;
  --steel: #3a5a6c;
  --mist: #e6eef2;
  --paper: #f4f8fa;
  --white: #ffffff;
  --sun: #e28a1a;
  --sun-deep: #b8680e;
  --cool: #0a7f8f;
  --cool-deep: #065e6a;
  --film: rgba(190, 220, 230, 0.72);
  --line: rgba(19, 38, 54, 0.12);
  --shadow: 0 18px 50px rgba(11, 21, 32, 0.14);
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --nav-h: 4.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 1.05rem;
  overflow-x: hidden;
}

body.intro-lock {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: none;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* ——— Site intro: PVC extrusion plant ——— */
.plant-intro {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, #1a3a4a 0%, transparent 55%),
    linear-gradient(165deg, #071018 0%, #0d2230 42%, #0a1822 100%);
  color: var(--mist);
  transition: opacity 0.85s var(--ease), visibility 0.85s;
}

.plant-intro.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.plant-intro__inner {
  width: min(100% - 1.5rem, 920px);
  text-align: center;
  position: relative;
}

.plant-intro__stage {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: min(58vh, 420px);
  margin: 0 auto 1.25rem;
}

.plant-intro__stage svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.plant-intro__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(12px);
  animation: brandIn 0.7s var(--ease) 3.6s forwards;
}

.plant-intro__tag {
  margin: 0.55rem 0 0;
  font-size: clamp(0.85rem, 2vw, 1rem);
  opacity: 0;
  letter-spacing: 0.04em;
  color: rgba(230, 238, 242, 0.78);
  animation: brandIn 0.7s var(--ease) 4s forwards;
}

.plant-intro__products {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.plant-intro__products span {
  opacity: 0;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(226, 138, 26, 0.45);
  color: #f0c078;
}

.plant-intro__products span:first-child {
  animation: brandIn 0.55s var(--ease) 2.4s forwards;
}

.plant-intro__products span:last-child {
  animation: brandIn 0.55s var(--ease) 3.1s forwards;
  border-color: rgba(10, 127, 143, 0.55);
  color: #8ed0db;
}

.plant-intro__skip {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  color: rgba(230, 238, 242, 0.7);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(230, 238, 242, 0.22);
  transition: color 0.2s, border-color 0.2s;
}

.plant-intro__skip:hover {
  color: #fff;
  border-color: rgba(230, 238, 242, 0.5);
}

/* Plant SVG animation helpers */
.plant-svg .pellets circle {
  animation: pelletDrop 1.4s linear infinite;
}

.plant-svg .pellets circle:nth-child(2) { animation-delay: 0.35s; }
.plant-svg .pellets circle:nth-child(3) { animation-delay: 0.7s; }
.plant-svg .pellets circle:nth-child(4) { animation-delay: 1.05s; }

.plant-svg .screw {
  transform-origin: 160px 158px;
  animation: screwSpin 1.1s linear infinite;
}

.plant-svg .barrel-glow {
  opacity: 0.35;
  animation: glowPulse 1.6s ease-in-out infinite;
}

.plant-svg .roll {
  transform-box: fill-box;
  transform-origin: center;
  animation: rollSpin 1.8s linear infinite;
}

.plant-svg .film-sheet {
  stroke-dasharray: 280;
  stroke-dashoffset: 280;
  animation: drawFilm 2.2s var(--ease) 0.8s forwards;
}

.plant-svg .film-label {
  opacity: 0;
  animation: brandIn 0.5s var(--ease) 2.2s forwards;
}

.plant-svg .fill-block {
  opacity: 0;
  transform-origin: center bottom;
  animation: fillRise 0.45s var(--ease) forwards;
}

.plant-svg .fill-block:nth-child(1) { animation-delay: 2.5s; }
.plant-svg .fill-block:nth-child(2) { animation-delay: 2.7s; }
.plant-svg .fill-block:nth-child(3) { animation-delay: 2.9s; }
.plant-svg .fill-block:nth-child(4) { animation-delay: 3.1s; }

.plant-svg .fill-label {
  opacity: 0;
  animation: brandIn 0.5s var(--ease) 3.15s forwards;
}

.plant-svg .film-flow {
  animation: filmStream 1.2s linear infinite;
}

@keyframes pelletDrop {
  0% { transform: translateY(0); opacity: 0; }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { transform: translateY(42px); opacity: 0; }
}

@keyframes screwSpin {
  to { transform: rotate(360deg); }
}

@keyframes glowPulse {
  50% { opacity: 0.7; }
}

@keyframes rollSpin {
  to { transform: rotate(360deg); }
}

@keyframes drawFilm {
  to { stroke-dashoffset: 0; }
}

@keyframes filmStream {
  from { stroke-dashoffset: 24; }
  to { stroke-dashoffset: 0; }
}

@keyframes fillRise {
  from {
    opacity: 0;
    transform: translateY(16px) scaleY(0.6);
  }
  to {
    opacity: 1;
    transform: translateY(0) scaleY(1);
  }
}

@keyframes brandIn {
  to {
    opacity: 1;
    transform: none;
  }
}

/* ——— Nav ——— */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.35s, box-shadow 0.35s, backdrop-filter 0.35s;
}

.site-header.is-scrolled {
  background: rgba(244, 248, 250, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
}

.site-header__bar {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 1.05rem;
  color: var(--ink);
}

.logo span {
  color: var(--sun);
  font-weight: 600;
}

.logo em {
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.02em;
  font-size: 0.72em;
  color: var(--steel);
  margin-left: 0.15rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--steel);
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 100%;
  height: 2px;
  background: var(--sun);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav a:hover::after,
.nav a.is-active::after {
  transform: scaleX(1);
}

.nav a.is-active {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--line);
}

.nav-toggle span {
  display: block;
  width: 1.2rem;
  height: 2px;
  background: var(--ink);
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--ink);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--sun);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--sun-deep);
  color: #fff;
}

.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}

.btn-ghost:hover {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}

.btn-outline {
  border: 1.5px solid var(--ink);
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--ink);
  color: #fff;
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  padding: calc(var(--nav-h) + 2rem) 0 4rem;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(115deg, rgba(7, 16, 24, 0.82) 0%, rgba(10, 40, 48, 0.55) 48%, rgba(11, 24, 32, 0.75) 100%),
    radial-gradient(ellipse 70% 80% at 75% 45%, rgba(10, 127, 143, 0.35), transparent 60%),
    radial-gradient(ellipse 50% 60% at 15% 80%, rgba(226, 138, 26, 0.22), transparent 55%),
    linear-gradient(160deg, #0a1620, #163040 50%, #0c1c28);
}

.hero__mesh {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000 30%, transparent 95%);
  animation: meshDrift 28s linear infinite;
}

@keyframes meshDrift {
  to { background-position: 48px 48px; }
}

.hero__visual {
  position: absolute;
  right: -4%;
  bottom: 8%;
  width: min(52vw, 560px);
  height: auto;
  z-index: -1;
  opacity: 0.9;
  pointer-events: none;
}

.hero__content {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
  max-width: 34rem;
  animation: heroRise 1s var(--ease) both;
}

@keyframes heroRise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
}

.hero__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.8rem, 8vw, 4.75rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  text-transform: uppercase;
}

.hero__brand span {
  display: block;
  color: var(--sun);
}

.hero__lead {
  margin: 0 0 1.75rem;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: rgba(255, 255, 255, 0.86);
  max-width: 28rem;
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* ——— Sections ——— */
.section {
  padding: 5.5rem 0;
}

.section--tight {
  padding: 4rem 0;
}

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

.section--cool {
  background:
    linear-gradient(135deg, rgba(10, 127, 143, 0.08), transparent 50%),
    linear-gradient(180deg, #eef5f7, #f4f8fa);
}

.section__head {
  max-width: 36rem;
  margin-bottom: 2.75rem;
}

.section__head--center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cool);
  margin-bottom: 0.65rem;
}

.section--ink .eyebrow {
  color: #7bc9d4;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.85rem;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.65rem, 3.5vw, 2.35rem); }
h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }

.lede {
  margin: 0;
  color: var(--steel);
  font-size: 1.05rem;
}

.section--ink .lede {
  color: rgba(230, 238, 242, 0.72);
}

/* ——— Story strip ——— */
.story {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.story__copy p {
  color: var(--steel);
  margin: 0 0 1rem;
}

.story__stats {
  display: grid;
  gap: 1.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--sun-deep);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat span {
  font-size: 0.92rem;
  color: var(--steel);
}

/* ——— Product rails (not cards as primary style — open layout) ——— */
.product-rail {
  display: grid;
  gap: 0;
}

.product-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding 0.3s var(--ease);
}

.product-row:first-child {
  border-top: 1px solid var(--line);
}

.product-row:hover {
  padding-left: 0.5rem;
}

.product-row__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--sun);
  letter-spacing: 0.04em;
}

.product-row p {
  margin: 0.2rem 0 0;
  color: var(--steel);
  font-size: 0.95rem;
}

.product-row__tag {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cool-deep);
  font-weight: 600;
}

/* ——— Why / features ——— */
.feature-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.feature {
  padding: 2rem 1.5rem;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.feature:last-child {
  border-right: 0;
}

.feature h3 {
  color: #fff;
  font-size: 1.05rem;
}

.feature p {
  margin: 0;
  color: rgba(230, 238, 242, 0.7);
  font-size: 0.95rem;
}

/* ——— Specs table ——— */
.spec-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 560px;
}

.spec-table th,
.spec-table td {
  padding: 0.95rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.spec-table th {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cool-deep);
  background: rgba(10, 127, 143, 0.06);
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--ink);
}

/* ——— Page hero (inner) ——— */
.page-hero {
  padding: calc(var(--nav-h) + 4rem) 0 3rem;
  background:
    linear-gradient(135deg, #0d1f2b 0%, #163846 55%, #0f2834 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  margin-bottom: 0.5rem;
}

.page-hero p {
  margin: 0;
  max-width: 32rem;
  color: rgba(255, 255, 255, 0.78);
}

/* ——— Contact ——— */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.unit h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.unit .role {
  color: var(--cool-deep);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.unit address {
  font-style: normal;
  color: var(--steel);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.unit a {
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid rgba(226, 138, 26, 0.5);
}

.unit a:hover {
  border-color: var(--sun);
}

.unit p {
  margin: 0.35rem 0;
  color: var(--steel);
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 2rem;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(232, 244, 247, 0.85)),
    #fff;
  border: 1px solid var(--line);
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--slate);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  font: inherit;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 0;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: 2px solid rgba(10, 127, 143, 0.35);
  border-color: var(--cool);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.form-note {
  font-size: 0.85rem;
  color: var(--steel);
  margin: 0;
}

/* ——— CTA band ——— */
.cta-band {
  padding: 4.5rem 0;
  background:
    radial-gradient(ellipse 60% 120% at 90% 50%, rgba(226, 138, 26, 0.25), transparent 55%),
    linear-gradient(110deg, #0d1f2b, #134050);
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  margin-bottom: 0.75rem;
}

.cta-band p {
  margin: 0 auto 1.75rem;
  max-width: 28rem;
  color: rgba(255, 255, 255, 0.78);
}

/* ——— Footer ——— */
.site-footer {
  background: var(--ink);
  color: rgba(230, 238, 242, 0.7);
  padding: 3rem 0 2rem;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.site-footer .logo {
  color: #fff;
  margin-bottom: 0.75rem;
}

.site-footer a:hover {
  color: #fff;
}

.site-footer h4 {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 0.85rem;
}

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

.site-footer li {
  margin-bottom: 0.45rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.82rem;
}

/* ——— Reveal on scroll ——— */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ——— Responsive ——— */
@media (max-width: 900px) {
  .story {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature-band {
    grid-template-columns: 1fr;
  }

  .feature {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .feature:last-child {
    border-bottom: 0;
  }

  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    opacity: 0.35;
    width: 80vw;
    right: -10%;
  }

  .product-row {
    grid-template-columns: 3rem 1fr;
  }

  .product-row__tag {
    grid-column: 2;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: grid;
  }

  .nav {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(244, 248, 250, 0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s var(--ease), opacity 0.35s;
  }

  .nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .hero {
    align-items: center;
    padding-bottom: 3rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .plant-intro {
    display: none;
  }

  body.intro-lock {
    overflow: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}