/* =====================================================
   EXEN CHEM — Global Stylesheet  (v3 — 2025 theme)
   Fonts: Barlow Condensed (headings) + Barlow (body)
   Primary: #1877F2  Dark: #111111  Light: #F9FAFB
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Barlow:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Barlow+Condensed:wght@400;500;600;700;800&display=swap');

/* ── Custom Properties ── */
:root {
  --blue:       #1877F2;
  --blue-hover: #0f65d4;
  --blue-soft:  #EEF3FF;
  --dark:       #111111;
  --grey:       #374151;
  --muted:      #6B7280;
  --light:      #F9FAFB;
  --white:      #ffffff;
  --border:     #E5E7EB;
  --text:       #111111;
  --text-light: #6B7280;

  --font-heading: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  --radius:      12px;
  --radius-pill: 100px;
  --shadow:      0 2px 12px rgba(0,0,0,0.06);
  --shadow-md:   0 6px 28px rgba(0,0,0,0.10);
  --transition:  0.22s ease;
  --max-w:       1160px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-body); border: none; background: none; }

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.1;
  color: var(--dark);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.4rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; }
p  { color: var(--muted); line-height: 1.7; }

/* ── Layout Helpers ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section-pad    { padding: 88px 0; }
.section-pad-sm { padding: 56px 0; }

.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.section-title { margin-bottom: 16px; }
.section-intro {
  max-width: 600px;
  font-size: 1.02rem;
  color: var(--muted);
}
.text-center { text-align: center; }
.text-center .section-intro { margin: 0 auto; }


/* ═══════════════════════════════════
   NAVBAR — frosted glass
═══════════════════════════════════ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar__logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
}
.navbar__nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar__nav a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition);
}
.navbar__nav a:hover,
.navbar__nav a.active { color: var(--dark); }

.navbar__cta {
  background: var(--blue) !important;
  color: var(--white) !important;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.88rem;
  box-shadow: 0 1px 4px rgba(24,119,242,0.25);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.navbar__cta:hover {
  background: var(--blue-hover) !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 10px rgba(24,119,242,0.35);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.navbar__toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--grey);
  border-radius: 2px;
}

@media (max-width: 860px) {
  .navbar__toggle { display: flex; }
  .navbar__nav {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-top: 1px solid var(--border);
    padding: 8px 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .navbar__nav.open { display: flex; }
  .navbar__nav a { width: 100%; padding: 12px 24px; font-size: 0.95rem; }
  .navbar__cta { margin: 8px 24px; width: calc(100% - 48px); text-align: center; }
}


/* ═══════════════════════════════════
   BUTTONS — Apple iOS pill style
═══════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.96rem;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  letter-spacing: -0.01em;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 1px 4px rgba(24,119,242,0.3), 0 4px 16px rgba(24,119,242,0.18);
}
.btn-primary:hover {
  background: var(--blue-hover);
  box-shadow: 0 2px 8px rgba(24,119,242,0.4), 0 8px 24px rgba(24,119,242,0.22);
}

.btn-secondary {
  background: var(--blue-soft);
  color: var(--blue);
}
.btn-secondary:hover { background: #dce8fd; }

.btn-white {
  background: var(--white);
  color: var(--blue);
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
}
.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.16);
}

.btn-outline {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { background: rgba(255,255,255,0.22); }

.btn-outline-dark {
  background: transparent;
  color: var(--blue);
  border: 1.5px solid var(--blue);
}
.btn-outline-dark:hover { background: var(--blue-soft); }


/* ═══════════════════════════════════
   PAGE HEADER (inner pages)
   Light, clean — white with soft blue gradient
═══════════════════════════════════ */
.page-header {
  background: var(--white);
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, var(--blue-soft), transparent);
  pointer-events: none;
}
.page-header__inner { position: relative; z-index: 2; }
.page-header h1   { color: var(--dark); margin-bottom: 14px; }
.page-header p    { font-size: 1.05rem; color: var(--muted); max-width: 560px; }


/* ═══════════════════════════════════
   TICKER
═══════════════════════════════════ */
.ticker {
  background: var(--blue);
  padding: 13px 0;
  overflow: hidden;
  white-space: nowrap;
}
.ticker__track {
  display: inline-flex;
  animation: ticker-scroll 30s linear infinite;
}
.ticker__track:hover { animation-play-state: paused; }
.ticker__item {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  padding: 0 28px;
}
.ticker__dot { color: rgba(255,255,255,0.4); }
@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}


/* ═══════════════════════════════════
   STATS
═══════════════════════════════════ */
.stats {
  background: var(--light);
  padding: 56px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.stats__item {
  text-align: center;
  padding: 12px 24px;
  border-right: 1px solid var(--border);
}
.stats__item:last-child { border-right: none; }
.stats__number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.stats__label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dark);
  margin-bottom: 4px;
}
.stats__sub { font-size: 0.8rem; color: var(--muted); }


/* ═══════════════════════════════════
   PRODUCT CARDS (homepage overview)
═══════════════════════════════════ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.product-card:hover {
  box-shadow: 0 8px 32px rgba(24,119,242,0.08);
  transform: translateY(-3px);
  border-color: rgba(24,119,242,0.25);
}
.product-card__icon {
  width: 44px; height: 44px;
  background: var(--blue-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.product-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.product-card p  { font-size: 0.88rem; margin-bottom: 18px; }
.product-card__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition), color var(--transition);
}
.product-card__link:hover { gap: 8px; color: var(--blue-hover); }


/* ═══════════════════════════════════
   ABOUT PAGE
═══════════════════════════════════ */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.mission-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  border-top: 3px solid var(--blue);
  transition: box-shadow var(--transition), transform var(--transition);
}
.mission-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.mission-card h4 { margin-bottom: 10px; font-size: 1rem; color: var(--dark); }
.mission-card p  { font-size: 0.9rem; }

.trust-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.trust-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.trust-item:hover { box-shadow: 0 4px 16px rgba(24,119,242,0.07); transform: translateY(-2px); }
.trust-item__icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: var(--blue-soft);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.trust-item__text h4 { font-size: 0.95rem; margin-bottom: 4px; color: var(--dark); }
.trust-item__text p  { font-size: 0.87rem; }

.timeline {
  position: relative;
  margin-top: 48px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 20px; top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline__item {
  position: relative;
  padding: 0 0 36px 56px;
}
.timeline__dot {
  position: absolute;
  left: 12px; top: 4px;
  width: 18px; height: 18px;
  background: var(--blue);
  border: 3px solid var(--white);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--blue);
}
.timeline__year {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.timeline__item h4 { font-size: 1rem; margin-bottom: 6px; color: var(--dark); }
.timeline__item p  { font-size: 0.9rem; }

/* ── Founder Card (quote) ── */
.founder-card {
  display: grid;
  grid-template-columns: 260px 1fr;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 8px 48px rgba(0,0,0,0.08);
  overflow: hidden;
  max-width: 860px;
  margin: 0 auto;
}
.founder-card__photo {
  background: var(--blue);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 36px 28px 0;
  min-height: 320px;
}
.founder-card__arch {
  width: 168px;
  height: 220px;
  border-radius: 84px 84px 0 0;
  overflow: hidden;
  background: rgba(255,255,255,0.15);
  flex-shrink: 0;
}
.founder-card__content {
  padding: 48px 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
}
.founder-card__qmark {
  opacity: 0.18;
}
.founder-card__quote {
  font-size: 1.08rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--grey);
  font-style: italic;
  margin: 0;
}
.founder-card__attr {
  display: flex;
  align-items: center;
  gap: 16px;
}
.founder-card__attr-line {
  width: 36px;
  height: 2px;
  background: var(--blue);
  flex-shrink: 0;
}
.founder-card__name {
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--dark);
}
.founder-card__role {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 2px;
}
@media (max-width: 680px) {
  .founder-card { grid-template-columns: 1fr; }
  .founder-card__photo { min-height: 200px; padding: 28px 28px 0; justify-content: center; }
  .founder-card__content { padding: 32px 28px; }
}


/* ═══════════════════════════════════
   PRODUCTS PAGE (industry tabs)
═══════════════════════════════════ */
.product-category {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 20px;
  transition: box-shadow var(--transition);
}
.product-category:hover { box-shadow: var(--shadow-md); }
.product-category__header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}
.product-category__header:hover { background: var(--light); }
.product-category__icon {
  width: 48px; height: 48px;
  background: var(--blue-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.product-category__title { flex: 1; }
.product-category__title h3 { font-size: 1.2rem; margin-bottom: 4px; }
.product-category__title p  { font-size: 0.88rem; margin-bottom: 0; }
.product-category__chevron {
  width: 22px; height: 22px;
  color: var(--muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.product-category.open .product-category__chevron { transform: rotate(180deg); }
.product-category__body {
  display: none;
  padding: 0 28px 24px;
  border-top: 1px solid var(--border);
}
.product-category.open .product-category__body { display: block; }
.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.product-tag {
  padding: 6px 14px;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--grey);
}
.product-note {
  font-size: 0.87rem;
  color: var(--muted);
  margin-top: 20px;
  font-style: italic;
}


/* ═══════════════════════════════════
   CONTACT PAGE
═══════════════════════════════════ */
.contact-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 56px;
  align-items: start;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 0.94rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(24,119,242,0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.contact-info {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
}
.contact-info h4 { font-size: 1.05rem; margin-bottom: 20px; color: var(--dark); }
.contact-detail {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 20px;
}
.contact-detail__icon {
  width: 38px; height: 38px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-detail__text { font-size: 0.9rem; }
.contact-detail__text strong { display: block; color: var(--dark); margin-bottom: 2px; }
.response-note {
  margin-top: 24px;
  padding: 14px 16px;
  background: var(--blue-soft);
  border-left: 3px solid var(--blue);
  border-radius: 0 10px 10px 0;
  font-size: 0.88rem;
  color: var(--muted);
}


/* ═══════════════════════════════════
   CTA BANNER — blue background
═══════════════════════════════════ */
.cta-banner {
  background: var(--blue);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner__inner { position: relative; z-index: 2; }
.cta-banner .section-label { color: rgba(255,255,255,0.65); }
.cta-banner h2   { color: var(--white); margin-bottom: 14px; }
.cta-banner p    { color: rgba(255,255,255,0.75); font-size: 1rem; margin-bottom: 32px; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-banner__btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-banner__deco { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }


/* ═══════════════════════════════════
   FOOTER
═══════════════════════════════════ */
.footer {
  background: #111111;
  padding: 60px 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer__brand img {
  height: 38px;
  width: auto;
  object-fit: contain;
  margin-bottom: 14px;
}
.footer__brand p { font-size: 0.85rem; color: rgba(255,255,255,0.45); line-height: 1.7; }
.footer__col h5 {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16px;
}
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col ul li a { font-size: 0.86rem; color: rgba(255,255,255,0.5); transition: color var(--transition); }
.footer__col ul li a:hover { color: var(--blue); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer__bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.3); }


/* ═══════════════════════════════════
   SCROLL ANIMATIONS
═══════════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }


/* ═══════════════════════════════════
   RESPONSIVE
═══════════════════════════════════ */
@media (max-width: 1024px) {
  .footer__grid   { grid-template-columns: 1fr 1fr; gap: 36px; }
  .about-story    { grid-template-columns: 1fr; gap: 48px; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .section-pad  { padding: 64px 0; }
  .stats__grid  { grid-template-columns: 1fr; }
  .stats__item  { border-right: none; border-bottom: 1px solid var(--border); padding: 24px; }
  .stats__item:last-child { border-bottom: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .form-row     { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
  .btn          { justify-content: center; }
}