/* === Kemipetra static site === */

:root {
  --color-bg: #ffffff;
  --color-surface: #f6f8fb;
  --color-surface-2: #eef2f7;
  --color-text: #0f1b2d;
  --color-muted: #5b6b80;
  --color-border: #dfe6ee;
  --color-primary: #0a3d62;
  --color-primary-dark: #062a44;
  --color-accent: #16a085;
  --color-accent-dark: #0e7a64;
  --shadow-sm: 0 1px 2px rgba(15, 27, 45, .06), 0 1px 3px rgba(15, 27, 45, .08);
  --shadow-md: 0 6px 16px rgba(15, 27, 45, .08);
  --shadow-lg: 0 20px 40px rgba(15, 27, 45, .12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --container: 1180px;
  --header-h: 72px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; margin: 0 0 .6em; color: var(--color-text); }
h1 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; color: var(--color-muted); }
p.lead { font-size: 1.15rem; color: var(--color-text); }

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

/* === Header === */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--color-primary); letter-spacing: -0.01em; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: .9rem;
  box-shadow: var(--shadow-sm);
}
.brand small { display: block; font-size: .7rem; font-weight: 500; color: var(--color-muted); margin-top: -2px; letter-spacing: .04em; text-transform: uppercase; }

.nav-links { display: flex; gap: 6px; align-items: center; list-style: none; padding: 0; margin: 0; }
.nav-links a {
  display: inline-block; padding: 8px 14px; border-radius: 8px;
  color: var(--color-text); font-weight: 500; font-size: .95rem;
}
.nav-links a:hover { background: var(--color-surface); color: var(--color-primary); }
.nav-links a.active { color: var(--color-primary); background: var(--color-surface); }

.nav-cta { padding: 9px 16px; background: var(--color-primary); color: #fff !important; border-radius: 8px; font-weight: 600; }
.nav-cta:hover { background: var(--color-accent) !important; color: #fff !important; }

.nav-lang a {
  font-weight: 700; font-size: .82rem; letter-spacing: .08em;
  padding: 7px 11px; border-radius: 8px;
  border: 1px solid var(--color-border); color: var(--color-muted);
}
.nav-lang a:hover, .nav-lang a.active {
  border-color: var(--color-primary); color: var(--color-primary); background: var(--color-surface);
}

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 40px; height: 40px; border-radius: 8px;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: var(--color-text);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after  { top:  7px; }

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: #fff; padding: 14px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-110%); transition: transform .28s ease;
    box-shadow: var(--shadow-md);
  }
  .nav-links.is-open { transform: translateY(0); }
  .nav-links a { padding: 12px 14px; }
  .nav-cta { text-align: center; }
}

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; font-weight: 600; font-size: .98rem;
  border-radius: 10px; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, background .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-primary); color: #fff !important; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-accent { background: var(--color-accent); color: #fff !important; }
.btn-accent:hover { background: var(--color-accent-dark); }
.btn-outline { border-color: var(--color-border); color: var(--color-text) !important; background: #fff; }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary) !important; }

/* === Hero === */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 500px at 110% -10%, rgba(22,160,133,.18), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(10,61,98,.18), transparent 60%),
    linear-gradient(180deg, #f7fbff 0%, #ffffff 100%);
  padding: 80px 0 90px;
  border-bottom: 1px solid var(--color-border);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }

.eyebrow {
  display: inline-block; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--color-accent); font-weight: 700; margin-bottom: 14px;
  padding: 4px 10px; background: rgba(22,160,133,.1); border-radius: 999px;
}
.hero h1 strong { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }

.hero-visual {
  position: relative; aspect-ratio: 1 / 1; max-width: 460px; margin-left: auto;
  border-radius: 24px; overflow: hidden;
  background: linear-gradient(135deg, #0a3d62 0%, #16a085 100%);
  box-shadow: var(--shadow-lg);
}
.hero-visual::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.25), transparent 40%),
    radial-gradient(circle at 70% 70%, rgba(255,255,255,.15), transparent 40%);
}
.hero-visual .badges {
  position: absolute; inset: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 30px;
}
.hero-visual .badge {
  background: rgba(255,255,255,.14); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.28); border-radius: 14px;
  padding: 18px; color: #fff; display: flex; flex-direction: column; justify-content: space-between;
}
.hero-visual .badge .num { font-size: 1.6rem; font-weight: 800; }
.hero-visual .badge .lbl { font-size: .85rem; opacity: .9; }

/* === Sections === */
.section { padding: 80px 0; }
.section.alt { background: var(--color-surface); }
.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head .eyebrow { margin-bottom: 10px; }
.section-head p { font-size: 1.05rem; }

/* === Cards === */
.grid { display: grid; gap: 22px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 880px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
}
@media (min-width: 580px) and (max-width: 880px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 28px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
.card .icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(10,61,98,.1), rgba(22,160,133,.15));
  color: var(--color-primary); display: grid; place-items: center; font-size: 1.4rem; margin-bottom: 18px;
}
.card h3 { margin-bottom: 8px; }
.card p { margin-bottom: 0; }

.card-link {
  margin-top: 16px; align-self: flex-start;
  font-weight: 600; color: var(--color-primary); display: inline-flex; align-items: center; gap: 6px;
}
.card-link::after { content: "→"; transition: transform .2s; }
.card-link:hover::after { transform: translateX(3px); }

/* === Feature list === */
.feature-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; }
.feature-list .check {
  flex: none; width: 24px; height: 24px; border-radius: 50%;
  background: var(--color-accent); color: #fff; display: grid; place-items: center; font-size: .85rem; font-weight: 700;
}

/* === Sector / industry tile === */
.tile {
  position: relative; overflow: hidden; border-radius: var(--radius-md);
  background: #fff; border: 1px solid var(--color-border);
  display: flex; flex-direction: column;
}
.tile-banner {
  aspect-ratio: 16 / 9; display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 1.1rem;
  background-color: var(--color-surface-2); background-size: cover; background-position: center;
  text-shadow: 0 2px 10px rgba(0,0,0,.35); padding: 12px;
}
.tile-banner.coating  { background-image: linear-gradient(135deg, rgba(10,61,98,.45), rgba(31,111,163,.3)),  url('https://images.unsplash.com/photo-1582719471384-894fbb16e074?auto=format&fit=crop&w=900&q=70'); }
.tile-banner.oil      { background-image: linear-gradient(135deg, rgba(45,52,54,.45), rgba(99,110,114,.3)),  url('../img/oil-well.jpg'); }
.tile-banner.water    { background-image: linear-gradient(135deg, rgba(9,132,227,.45), rgba(0,206,201,.35)),  url('https://images.unsplash.com/photo-1437482078695-73f5ca6c96e2?auto=format&fit=crop&w=900&q=70'); }
.tile-banner.food     { background-image: linear-gradient(135deg, rgba(0,184,148,.55), rgba(106,176,76,.45)), url('https://images.unsplash.com/photo-1576091160399-112ba8d25d1d?auto=format&fit=crop&w=900&q=70'); }
.tile-banner.cosmetic { background-image: linear-gradient(135deg, rgba(176,106,179,.5), rgba(69,104,220,.4)), url('https://images.unsplash.com/photo-1556228720-195a672e8a03?auto=format&fit=crop&w=900&q=70'); }
.tile-body { padding: 22px 24px 24px; }
.tile-body h3 { margin-bottom: 6px; }

/* === Two column block === */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 880px) { .two-col { grid-template-columns: 1fr; gap: 36px; } }

.image-block {
  border-radius: var(--radius-lg); overflow: hidden;
  background: linear-gradient(135deg, #0a3d62, #16a085);
  background-size: cover; background-position: center;
  aspect-ratio: 4 / 3; box-shadow: var(--shadow-lg);
  position: relative;
}
.image-block::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.3), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,.18), transparent 45%);
}
.image-block.lab        { background-image: url('https://images.unsplash.com/photo-1532187863486-abf9dbad1b69?auto=format&fit=crop&w=1100&q=70'); }
.image-block.warehouse  { background-image: url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?auto=format&fit=crop&w=1100&q=70'); }
.image-block.docs       { background-image: url('https://images.unsplash.com/photo-1450101499163-c8848c66ca85?auto=format&fit=crop&w=1100&q=70'); }
.image-block.testing    { background-image: url('https://images.unsplash.com/photo-1579165466949-3180a3d056d5?auto=format&fit=crop&w=1100&q=70'); }
.image-block.team       { background-image: url('../img/chem-plant.jpg'); }
.image-block.office     { background-image: url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=1100&q=70'); }
.image-block.coating-img  { background-image: url('https://images.unsplash.com/photo-1582719471384-894fbb16e074?auto=format&fit=crop&w=1100&q=70'); }
.image-block.oil-img      { background-image: url('../img/oil-well.jpg'); }
.image-block.water-img    { background-image: url('https://images.unsplash.com/photo-1437482078695-73f5ca6c96e2?auto=format&fit=crop&w=1100&q=70'); }
.image-block.food-img     { background-image: url('https://images.unsplash.com/photo-1576091160399-112ba8d25d1d?auto=format&fit=crop&w=1100&q=70'); }
.image-block.cosmetic-img { background-image: url('https://images.unsplash.com/photo-1571781926291-c477ebfd024b?auto=format&fit=crop&w=1100&q=70'); }
.image-block[class*="-img"]::after,
.image-block.lab::after, .image-block.warehouse::after, .image-block.docs::after,
.image-block.testing::after, .image-block.team::after, .image-block.office::after {
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,.18));
}

/* === Stats === */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
@media (max-width: 880px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat .num { font-size: 2.4rem; font-weight: 800; color: var(--color-primary); letter-spacing: -0.02em; }
.stat .lbl { color: var(--color-muted); font-size: .95rem; }

/* === CTA banner === */
.cta-banner {
  border-radius: var(--radius-lg); padding: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 36px;
  box-shadow: var(--shadow-lg);
}
.cta-banner h2 { color: #fff; margin: 0; }
.cta-banner p { color: rgba(255,255,255,.9); margin: 8px 0 0; }
.cta-banner .btn-outline { background: #fff; border-color: #fff; }
@media (max-width: 880px) { .cta-banner { flex-direction: column; align-items: flex-start; padding: 36px; } }

/* === Page hero (sub pages) === */
.page-hero {
  padding: 90px 0 60px;
  background: linear-gradient(180deg, #f5f9fd 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
}
.page-hero h1 { margin-bottom: 12px; }
.page-hero p { font-size: 1.1rem; max-width: 720px; }

/* === Blog cards === */
.blog-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.blog-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.blog-cover { aspect-ratio: 16 / 9; background-size: cover; background-position: center; }
.blog-cover.c1 { background-image: linear-gradient(135deg, rgba(69,104,220,.35), rgba(176,106,179,.35)), url('https://images.unsplash.com/photo-1571781926291-c477ebfd024b?auto=format&fit=crop&w=900&q=70'); }
.blog-cover.c2 { background-image: linear-gradient(135deg, rgba(10,61,98,.4), rgba(22,160,133,.35)),    url('https://images.unsplash.com/photo-1437482078695-73f5ca6c96e2?auto=format&fit=crop&w=900&q=70'); }
.blog-cover.c3 { background-image: linear-gradient(135deg, rgba(0,184,148,.4), rgba(9,132,227,.35)),    url('https://images.unsplash.com/photo-1450101499163-c8848c66ca85?auto=format&fit=crop&w=900&q=70'); }
.blog-cover.c4 { background-image: linear-gradient(135deg, rgba(211,84,0,.3), rgba(243,156,18,.25)),    url('https://images.unsplash.com/photo-1582719471384-894fbb16e074?auto=format&fit=crop&w=900&q=70'); }
.blog-body { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.blog-meta { font-size: .82rem; color: var(--color-muted); display: flex; gap: 10px; }
.blog-meta .tag { background: var(--color-surface); padding: 2px 10px; border-radius: 999px; color: var(--color-primary); font-weight: 600; }
.blog-card h3 { margin: 0 0 4px; font-size: 1.15rem; }
.blog-card p { margin: 0; }
.blog-card .card-link { margin-top: auto; }

/* === Tables / lists for products === */
.product-group { margin-bottom: 48px; }
.product-group > h3 {
  display: flex; align-items: center; gap: 12px; font-size: 1.25rem;
  padding-bottom: 12px; margin-bottom: 18px; border-bottom: 2px solid var(--color-surface-2);
}
.product-group > h3 .pill {
  font-size: .7rem; padding: 3px 10px; border-radius: 999px;
  background: var(--color-surface); color: var(--color-primary); font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
}
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 8px 14px; background: #fff; border: 1px solid var(--color-border); border-radius: 999px;
  font-size: .9rem; color: var(--color-text); transition: all .15s;
}
.chip:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-surface); }

/* === Footer === */
.site-footer { background: #061a2b; color: #c2cfe0; padding: 60px 0 24px; margin-top: 80px; }
.site-footer a { color: #c2cfe0; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 580px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-bottom {
  border-top: 1px solid #0f2a44; padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  font-size: .88rem; color: #8aa0b8;
}

/* === Notice / placeholder banner === */
.notice {
  background: #fff8e1; border: 1px solid #ffe082; color: #6d4c00;
  padding: 18px 22px; border-radius: var(--radius-md);
  display: flex; gap: 12px; align-items: flex-start;
}
.notice strong { color: #5d3f00; }