/* =====================================================================
   Charbhuja International — Stylesheet
   Design language: quarry & core-sample motifs, warm stone palette.
   ===================================================================== */

:root {
  /* -- Palette: drawn from the quarry itself, not a generic template -- */
  --charcoal-basalt: #1f1d1b;   /* near-black, warm — raw basalt */
  --quarry-stone:    #8c7b6a;   /* warm greige — sandstone body */
  --limestone:       #ede8df;   /* soft warm off-white — cut limestone */
  --rust-ochre:      #b5652a;   /* oxidised iron vein — primary accent */
  --slate-grey:      #4a5259;   /* cool grey — slate, secondary sections */
  --gold-vein:       #c9a227;   /* rare highlight — mineral vein / CTA hover */
  --paper:           #faf8f4;

  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  --container: 1240px;
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--charcoal-basalt);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin: 0 0 16px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rust-ochre);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

/* Core-sample tick: signature motif — a striped cylinder mark like a
   drilled geological core sample, used as a recurring section marker. */
.core-tick {
  display: inline-block;
  width: 20px;
  height: 10px;
  border-radius: 5px;
  background: repeating-linear-gradient(
    90deg,
    var(--rust-ochre) 0px, var(--rust-ochre) 2px,
    var(--quarry-stone) 2px, var(--quarry-stone) 5px,
    var(--charcoal-basalt) 5px, var(--charcoal-basalt) 7px,
    var(--gold-vein) 7px, var(--gold-vein) 8px,
    var(--quarry-stone) 8px, var(--quarry-stone) 11px
  );
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--charcoal-basalt);
  border-radius: var(--radius);
  background: transparent;
  color: var(--charcoal-basalt);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}
.btn:hover { background: var(--charcoal-basalt); color: var(--limestone); }

.btn-solid {
  background: var(--rust-ochre);
  border-color: var(--rust-ochre);
  color: #fff;
}
.btn-solid:hover { background: var(--gold-vein); border-color: var(--gold-vein); color: var(--charcoal-basalt); }

.btn-light {
  border-color: var(--limestone);
  color: var(--limestone);
}
.btn-light:hover { background: var(--limestone); color: var(--charcoal-basalt); }

/* ---------------------------------------------------------------- Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(31, 29, 27, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(237, 232, 223, 0.12);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.03em;
  color: var(--limestone);
  text-transform: uppercase;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.brand small {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--rust-ochre);
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > ul { display: flex; gap: 2px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--limestone);
  border-radius: var(--radius);
  transition: color 0.2s ease, background 0.2s ease;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li.open > a { color: var(--gold-vein); background: rgba(255,255,255,0.04); }

.has-dropdown .dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  background: var(--charcoal-basalt);
  border: 1px solid rgba(237,232,223,0.14);
  padding: 8px 0;
  display: none;
}
.has-dropdown:hover .dropdown,
.has-dropdown.open .dropdown { display: block; }
.dropdown li a {
  display: block;
  padding: 10px 18px;
  font-size: 13px;
  color: var(--limestone);
  font-family: var(--font-body);
  letter-spacing: 0;
  text-transform: none;
}
.dropdown li a:hover { color: var(--gold-vein); background: rgba(255,255,255,0.03); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--limestone);
  color: var(--limestone);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

/* ---------------------------------------------------------------- Hero */
.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  overflow: hidden;
  background: var(--charcoal-basalt);
  display: flex;
  align-items: flex-end;
}
.hero-video,
.hero-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.62;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(31,29,27,0.35) 0%, rgba(31,29,27,0.35) 40%, rgba(31,29,27,0.92) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-bottom: 90px;
  color: var(--limestone);
}
.hero-content .eyebrow { color: var(--gold-vein); }
.hero-content h1 {
  font-size: clamp(42px, 7vw, 92px);
  max-width: 900px;
  margin-bottom: 20px;
}
.hero-content p {
  max-width: 560px;
  font-size: 17px;
  color: rgba(237,232,223,0.82);
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.scroll-cue {
  position: absolute;
  bottom: 28px;
  right: 6%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--limestone);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: bob 2.2s ease-in-out infinite;
}
.scroll-cue .core-tick { width: 10px; height: 20px; border-radius: 5px; background: repeating-linear-gradient(180deg, var(--rust-ochre) 0px, var(--rust-ochre) 2px, var(--quarry-stone) 2px, var(--quarry-stone) 5px, var(--limestone) 5px, var(--limestone) 7px, var(--gold-vein) 7px, var(--gold-vein) 8px, var(--quarry-stone) 8px, var(--quarry-stone) 11px); }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* ---------------------------------------------------------------- Category strip */
.category-strip { background: var(--charcoal-basalt); padding: 0; }
.category-strip ul { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.category-strip a {
  display: block;
  padding: 26px 20px;
  text-align: center;
  color: var(--limestone);
  border-right: 1px solid rgba(237,232,223,0.1);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background 0.2s ease, color 0.2s ease;
}
.category-strip a:hover { background: var(--rust-ochre); color: #fff; }
.category-strip .count { display: block; font-family: var(--font-body); font-size: 11px; letter-spacing: 0; color: var(--quarry-stone); margin-top: 4px; text-transform: none; }

/* ---------------------------------------------------------------- Sections */
section { padding: 100px 0; }
.section-alt { background: var(--limestone); }
.section-dark { background: var(--charcoal-basalt); color: var(--limestone); }
.section-dark h2, .section-dark h3, .section-dark h4 { color: var(--limestone); }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.two-col img { border-radius: var(--radius); }

.lede { font-size: 18px; color: var(--slate-grey); max-width: 640px; }

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 48px;
}
.stat-block { border-left: 2px solid var(--rust-ochre); padding-left: 16px; }
.stat-num { font-family: var(--font-display); font-size: 44px; color: var(--charcoal-basalt); }
.section-dark .stat-num { color: var(--gold-vein); }
.stat-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--quarry-stone); }

/* Verticals / Why choose us */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: rgba(237,232,223,0.08); }
.grid-3 .card { background: var(--charcoal-basalt); padding: 40px 32px; }
.card .index { font-family: var(--font-mono); font-size: 12px; color: var(--rust-ochre); letter-spacing: 0.1em; }
.card h3 { font-size: 22px; margin: 14px 0 10px; }
.card p { color: rgba(237,232,223,0.72); margin: 0; font-size: 15px; }

.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 50px; }
.why-item { border-top: 2px solid var(--rust-ochre); padding-top: 18px; }
.why-item h4 { font-size: 18px; margin-bottom: 8px; }
.why-item p { color: var(--slate-grey); font-size: 14px; margin: 0; }

/* Products grid */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 50px; }
.product-card { background: #fff; border: 1px solid rgba(31,29,27,0.08); overflow: hidden; transition: transform 0.25s ease, box-shadow 0.25s ease; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 18px 34px rgba(31,29,27,0.12); }
.product-thumb { aspect-ratio: 1/1; background: var(--quarry-stone) center/cover no-repeat; position: relative; }
.product-thumb .no-image { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.7); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.product-body { padding: 18px 20px 22px; }
.product-cat { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--rust-ochre); }
.product-body h4 { font-size: 16px; margin: 8px 0 0; text-transform: none; letter-spacing: 0; }

/* Testimonials */
.testimonial-track { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 50px; }
.testimonial-card { background: #fff; border-left: 3px solid var(--rust-ochre); padding: 30px 32px; }
.testimonial-card p { font-size: 16px; color: var(--charcoal-basalt); margin: 0 0 18px; }
.testimonial-name { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--slate-grey); }

/* Presence / map */
.presence { text-align: center; }
.presence img { margin: 40px auto 0; max-width: 720px; }

/* Footer */
.site-footer { background: var(--charcoal-basalt); color: rgba(237,232,223,0.82); padding: 80px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 60px; border-bottom: 1px solid rgba(237,232,223,0.1); }
.footer-grid h5 { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold-vein); margin-bottom: 18px; }
.footer-grid ul li { margin-bottom: 10px; font-size: 14px; }
.footer-grid ul li a:hover { color: var(--gold-vein); }
.footer-brand p { font-size: 14px; max-width: 320px; color: rgba(237,232,223,0.6); }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a { width: 36px; height: 36px; border: 1px solid rgba(237,232,223,0.25); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 12px; }
.footer-social a:hover { background: var(--rust-ochre); border-color: var(--rust-ochre); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 26px 0; font-size: 13px; color: rgba(237,232,223,0.5); font-family: var(--font-mono); }

/* Forms */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group.full { grid-column: 1 / -1; }
label { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--slate-grey); margin-bottom: 8px; }
input[type=text], input[type=email], input[type=tel], input[type=password], input[type=number], textarea, select {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid rgba(31,29,27,0.18);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 15px;
  background: #fff;
  color: var(--charcoal-basalt);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--rust-ochre); outline-offset: 1px; }
textarea { resize: vertical; min-height: 120px; }

.alert { padding: 16px 20px; border-radius: var(--radius); margin-bottom: 24px; font-size: 14px; }
.alert-success { background: rgba(76, 175, 80, 0.12); border: 1px solid rgba(76,175,80,0.4); color: #2e6b31; }
.alert-error { background: rgba(213, 60, 60, 0.1); border: 1px solid rgba(213,60,60,0.4); color: #9c2b2b; }

/* Page hero (inner pages) */
.page-hero { background: var(--charcoal-basalt); color: var(--limestone); padding: 130px 0 60px; }
.page-hero .eyebrow { color: var(--gold-vein); }
.breadcrumb { font-family: var(--font-mono); font-size: 12px; color: var(--quarry-stone); }
.breadcrumb a { color: var(--limestone); }

/* Detail page */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.spec-list { margin-top: 24px; border-top: 1px solid rgba(31,29,27,0.1); }
.spec-list div { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid rgba(31,29,27,0.1); font-size: 14px; }
.spec-list div span:first-child { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--slate-grey); font-size: 12px; }

/* Countries served */
.country-badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; justify-content: center; }
.country-badge { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border: 1px solid rgba(237,232,223,0.2); border-radius: 30px; font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.04em; color: var(--limestone); }
.country-badge .flag { font-size: 18px; }
.section-alt .country-badge { border-color: rgba(31,29,27,0.15); color: var(--charcoal-basalt); }

/* Video grid */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 50px; }
.video-card { background: #fff; border: 1px solid rgba(31,29,27,0.08); overflow: hidden; }
.video-frame { position: relative; aspect-ratio: 16/9; background: var(--charcoal-basalt); }
.video-frame video, .video-frame iframe { width: 100%; height: 100%; object-fit: cover; border: 0; }
.video-body { padding: 16px 18px 20px; }
.video-body h4 { font-size: 15px; text-transform: none; letter-spacing: 0; margin: 0 0 6px; }
.video-body p { font-size: 13px; color: var(--slate-grey); margin: 0; }

/* Founder section */
.founder-block { display: flex; gap: 30px; align-items: flex-start; margin-top: 40px; }
.founder-photo { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; background: var(--quarry-stone); flex-shrink: 0; }
.founder-name { font-family: var(--font-display); font-size: 24px; text-transform: uppercase; margin: 0 0 4px; }
.founder-role { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rust-ochre); margin-bottom: 14px; }

/* Product story block */
.story-block { background: var(--limestone); border-left: 3px solid var(--rust-ochre); padding: 24px 28px; margin: 24px 0; font-style: italic; color: var(--charcoal-basalt); }

/* Product gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px; }
.gallery-grid img { aspect-ratio: 1/1; object-fit: cover; border-radius: var(--radius); cursor: pointer; }

@media (max-width: 980px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .founder-block { flex-direction: column; align-items: center; text-align: center; }
}
@media (max-width: 640px) {
  .video-grid, .gallery-grid { grid-template-columns: 1fr 1fr; }
}

/* Responsive */
@media (max-width: 980px) {
  .two-col, .detail-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .why-grid { grid-template-columns: 1fr 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-track { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { position: fixed; inset: 76px 0 0 0; background: var(--charcoal-basalt); flex-direction: column; padding: 20px; display: none; overflow-y: auto; }
  .main-nav.open { display: flex; }
  .main-nav > ul { flex-direction: column; width: 100%; }
  .has-dropdown .dropdown { position: static; border: none; padding-left: 16px; }
  .nav-toggle { display: block; }
}
@media (max-width: 640px) {
  .grid-3, .why-grid, .products-grid, .form-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  section { padding: 70px 0; }
  .hero-content { padding-bottom: 60px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}