/* ---------------------------------------------------------
   Arvona Chemicals — design tokens
--------------------------------------------------------- */
:root {
  --navy-950: #0a1e2b;
  --navy-900: #0c2634;
  --navy-800: #0f2f3f;
  --navy-700: #143a4d;
  --cream: #f4f1e9;
  --cream-line: #e2ddd0;
  --cyan: #2bb6e8;
  --cyan-dark: #1a8ebd;
  --ink: #14232b;
  --ink-soft: #4a5a62;
  --white: #ffffff;

  --font-serif: "Lora", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --wrap: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-family: var(--font-serif); }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--navy-900);
  color: var(--white);
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------------------------------------------------------
   Buttons
--------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--cyan); color: var(--navy-950); }
.btn-primary:hover { background: #48c6ef; box-shadow: 0 6px 20px rgba(43, 182, 232, 0.35); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.35); }
.btn-outline:hover { border-color: var(--white); }
.btn-dark { background: var(--navy-950); color: var(--white); }
.btn-dark:hover { background: var(--navy-800); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ---------------------------------------------------------
   Header
--------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cream);
  border-bottom: 1px solid var(--cream-line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
}
.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--navy-900);
}
.brand-dot { color: var(--cyan); }
.brand-tag {
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  color: var(--cyan-dark);
  font-weight: 600;
  margin-top: 3px;
}
.main-nav {
  display: flex;
  gap: 32px;
  margin-left: auto;
  margin-right: 32px;
}
.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
}
.main-nav a:hover { color: var(--cyan-dark); }
.nav-cta { flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--navy-900);
  border-radius: 2px;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px 24px 20px;
  border-top: 1px solid var(--cream-line);
}
.mobile-nav a {
  padding: 12px 0;
  font-weight: 500;
  border-bottom: 1px solid var(--cream-line);
}
.mobile-nav .btn { margin-top: 12px; }

@media (max-width: 860px) {
  .main-nav, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav.is-open { display: flex; }
}

/* ---------------------------------------------------------
   Eyebrows / section heads
--------------------------------------------------------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: rgba(255,255,255,0.75);
  margin: 0 0 18px;
}
.eyebrow-rule { width: 28px; height: 1px; background: currentColor; opacity: 0.6; }
.eyebrow-accent { color: var(--cyan-dark); }

.section { padding: 96px 0; }
.section-light { background: var(--cream); }
.section-dark { background: var(--navy-900); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
}
.section-title {
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--navy-950);
  line-height: 1.2;
}
.section-title em { color: var(--cyan-dark); font-style: italic; }
.section-title-light { color: var(--white); }
.section-lede {
  max-width: 340px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink-soft);
  padding-top: 6px;
}
.section-lede-light { color: rgba(255,255,255,0.72); }

/* ---------------------------------------------------------
   Hero
--------------------------------------------------------- */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-950) 60%, #081620 100%);
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg .ring {
  position: absolute;
  border: 1px solid rgba(43,182,232,0.18);
  border-radius: 50%;
}
.ring-1 { width: 520px; height: 520px; top: -120px; right: -80px; }
.ring-2 { width: 340px; height: 340px; top: 20px; right: 60px; }
.hero-bg .dot { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: rgba(43,182,232,0.35); }
.dot-1 { top: 46%; left: 8%; }
.dot-2 { top: 62%; right: 32%; }
.dot-3 { bottom: 8%; left: 40%; }

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
  padding-top: 72px;
  padding-bottom: 88px;
}
.hero-copy { max-width: 660px; }
.hero-title {
  font-size: clamp(2.3rem, 4.4vw, 3.4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero-title em { color: var(--cyan); font-style: italic; font-weight: 600; }
.hero-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.68);
  max-width: 480px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-card {
  background: var(--white);
  border-radius: 16px;
  padding: 22px 32px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
  min-width: 180px;
}
.hero-card-eyebrow {
  display: block;
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  font-weight: 600;
  margin-bottom: 8px;
}
.hero-card-logo {
  font-family: var(--font-serif);
  font-weight: 700;
  font-style: italic;
  font-size: 1.4rem;
  color: var(--cyan-dark);
}
.hero-card-logo .drop { color: var(--cyan); }

.stats-bar {
  position: relative;
  background: var(--navy-950);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 28px 24px;
  border-right: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--cyan);
}
.stat-label { font-size: 0.82rem; color: rgba(255,255,255,0.55); }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-card { justify-self: start; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,0.08); }
}

/* ---------------------------------------------------------
   Who We Serve
--------------------------------------------------------- */
.segment-list { border-top: 1px solid var(--cream-line); }
.segment-row {
  display: grid;
  grid-template-columns: 50px 220px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--cream-line);
}
.segment-num { font-size: 0.85rem; color: var(--ink-soft); opacity: 0.6; }
.segment-name { font-size: 1.3rem; font-weight: 600; color: var(--navy-950); }
.segment-desc { color: var(--ink-soft); line-height: 1.6; max-width: 560px; }

@media (max-width: 700px) {
  .segment-row { grid-template-columns: 30px 1fr; row-gap: 8px; }
  .segment-desc { grid-column: 2; }
}

/* ---------------------------------------------------------
   Products
--------------------------------------------------------- */
.filter-pills { display: flex; gap: 10px; margin-bottom: 40px; flex-wrap: wrap; }
.pill {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.75);
  border-radius: 999px;
  padding: 9px 20px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.15s ease;
}
.pill.is-active { background: var(--cyan); border-color: var(--cyan); color: var(--navy-950); }
.pill:not(.is-active):hover { border-color: rgba(255,255,255,0.5); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--navy-800);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.product-card:hover { transform: translateY(-3px); border-color: rgba(43,182,232,0.35); }
.product-card.is-hidden { display: none; }
.product-media {
  height: 190px;
  overflow: hidden;
  background: linear-gradient(155deg, var(--navy-700), var(--navy-800));
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.product-card:hover .product-media img { transform: scale(1.04); }
.product-tag {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--cyan);
  margin: 20px 24px 8px;
}
.product-name { font-size: 1.15rem; color: var(--white); margin: 0 24px 8px; font-weight: 600; }
.product-desc { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.55; margin: 0 24px 16px; }
.size-pills { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 24px 22px; }
.size-pills span {
  border: 1px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.7);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.75rem;
}

@media (max-width: 900px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .product-grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------
   Why Arvona
--------------------------------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--cream-line);
}
.feature-cell {
  padding: 40px;
  border-right: 1px solid var(--cream-line);
  border-bottom: 1px solid var(--cream-line);
}
.feature-cell:nth-child(2n) { border-right: none; }
.feature-cell:nth-last-child(-n+2) { border-bottom: none; }
.feature-num { display: block; font-size: 0.8rem; color: var(--cyan-dark); font-weight: 700; margin-bottom: 14px; }
.feature-title { font-size: 1.3rem; font-weight: 600; color: var(--navy-950); margin-bottom: 10px; }
.feature-desc { color: var(--ink-soft); line-height: 1.6; max-width: 420px; }

@media (max-width: 700px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature-cell { border-right: none !important; }
  .feature-cell:not(:last-child) { border-bottom: 1px solid var(--cream-line) !important; }
}

/* ---------------------------------------------------------
   Get a Quote
--------------------------------------------------------- */
.quote-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.quote-copy .section-lede { max-width: 420px; margin-bottom: 32px; }
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid var(--cream-line);
}
.contact-details dt {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.contact-details dd { margin: 0; font-weight: 600; color: var(--navy-950); }
.contact-details a:hover { color: var(--cyan-dark); }

.quote-form {
  background: var(--white);
  border: 1px solid var(--cream-line);
  border-radius: 16px;
  padding: 36px;
  box-shadow: 0 20px 50px rgba(20,35,43,0.06);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { margin-bottom: 20px; }
.form-field label, .form-field legend {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 8px;
  padding: 0;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--cream-line);
  background: var(--cream);
  border-radius: 8px;
  padding: 11px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43,182,232,0.15);
}
.form-field textarea { resize: vertical; }
fieldset.form-field { border: none; padding: 0; margin: 0 0 20px; }
.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
}
.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  color: var(--ink);
}
.checkbox-grid input { width: auto; }
.form-status { min-height: 1.2em; font-size: 0.88rem; margin-bottom: 12px; }
.form-status.is-ok { color: #1a8a4c; }
.form-status.is-error { color: #c0392b; }

@media (max-width: 860px) {
  .quote-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .form-row, .checkbox-grid { grid-template-columns: 1fr; }
  .quote-form { padding: 24px; }
}

/* ---------------------------------------------------------
   Certifications + Footer
--------------------------------------------------------- */
.cert-strip { background: var(--navy-950); padding: 40px 0; border-top: 1px solid rgba(255,255,255,0.06); }
.cert-grid { display: flex; gap: 40px; flex-wrap: wrap; }
.cert-item { display: flex; align-items: center; gap: 14px; }
.cert-icon { font-size: 1.4rem; }
.cert-item strong { display: block; color: var(--white); font-size: 0.95rem; }
.cert-item span:not(.cert-icon) { display: block; color: rgba(255,255,255,0.55); font-size: 0.82rem; }

.site-footer { background: var(--navy-900); padding: 32px 0; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-brand { display: block; font-family: var(--font-serif); font-weight: 700; color: var(--white); font-size: 1.1rem; }
.footer-tag { display: block; font-size: 0.72rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-nav a { font-size: 0.88rem; color: rgba(255,255,255,0.7); }
.footer-nav a:hover { color: var(--cyan); }
.footer-copy { font-size: 0.82rem; color: rgba(255,255,255,0.45); }