/* ==========================================================================
   Baltic Trader Group LT — Premium industrial theme
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  --bt-red: #c92127;
  --bt-red-600: #a81a1f;
  --bt-red-faded: rgba(201, 33, 39, .12);
  --bt-cyan: #00bcd4;

  --bt-ink: #25282b;
  --bt-ink-900: #17191b;
  --bt-ink-800: #1c1f21;
  --bt-ink-700: #2b2f33;

  --bt-body: #4f5459;
  --bt-muted: #8e9194;

  --bt-bg: #ffffff;
  --bt-bg-alt: #f3f5fb;
  --bt-border: #dfe2e6;

  --bt-shadow-xs: 0 2px 6px rgba(23, 25, 27, .05);
  --bt-shadow-sm: 0 6px 18px rgba(23, 25, 27, .07);
  --bt-shadow: 0 14px 38px rgba(23, 25, 27, .10);
  --bt-shadow-lg: 0 28px 64px rgba(23, 25, 27, .16);

  --bt-radius: 14px;
  --bt-radius-sm: 8px;

  --bt-topbar-h: 42px;
  --bt-nav-h: 84px;

  --bt-ease: cubic-bezier(.22, .61, .36, 1);
}

/* --------------------------------------------------------------------------
   2. Base
   -------------------------------------------------------------------------- */
* { -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--bt-nav-h) + 10px); }

body {
  font-family: "Poppins", -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--bt-body);
  background: var(--bt-bg);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .bt-h {
  font-family: "Poppins", sans-serif;
  color: var(--bt-ink);
  letter-spacing: .04em;
  line-height: 1.22;
  text-transform: uppercase;
  margin: 0;
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.1vw, 2.15rem); font-weight: 800; }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.65rem); font-weight: 700; }
h4 { font-size: 1.15rem; font-weight: 600; }
h5 { font-size: 1.02rem; font-weight: 600; text-transform: none; letter-spacing: .02em; }
h6 { font-size: .84rem; font-weight: 700; letter-spacing: .16em; }

p { margin: 0 0 1.1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--bt-red); text-decoration: none; transition: color .25s var(--bt-ease); }
a:hover { color: var(--bt-ink); }

img { max-width: 100%; height: auto; }

::selection { background: var(--bt-red); color: #fff; }

.bt-container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 24px;
}
.bt-container--narrow { max-width: 940px; }

/* --------------------------------------------------------------------------
   3. Utilities
   -------------------------------------------------------------------------- */
.bt-section { padding: clamp(58px, 8vw, 104px) 0; }
.bt-section--tight { padding: clamp(44px, 5.5vw, 72px) 0; }
.bt-section--alt { background: var(--bt-bg-alt); }
.bt-section--dark { background: var(--bt-ink-800); color: rgba(255, 255, 255, .74); }
.bt-section--dark h1, .bt-section--dark h2,
.bt-section--dark h3, .bt-section--dark h4,
.bt-section--dark h5 { color: #fff; }

.bt-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--bt-red);
  margin-bottom: 14px;
}
.bt-eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--bt-red);
}
.bt-eyebrow--center { justify-content: center; }
.bt-section--dark .bt-eyebrow { color: #ff5f65; }
.bt-section--dark .bt-eyebrow::before { background: #ff5f65; }

.bt-title-accent { color: var(--bt-red); }

.bt-lead {
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--bt-body);
}
.bt-section--dark .bt-lead { color: rgba(255, 255, 255, .74); }

.bt-head { max-width: 760px; }
.bt-head--center { margin-inline: auto; text-align: center; }
.bt-head h2 + p { margin-top: 18px; }

.bt-rule {
  width: 56px;
  height: 3px;
  background: var(--bt-red);
  border: 0;
  opacity: 1;
  margin: 22px 0 0;
}
.bt-head--center .bt-rule { margin-inline: auto; }

/* Buttons ---------------------------------------------------------------- */
.bt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border: 2px solid transparent;
  border-radius: 4px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all .3s var(--bt-ease);
}
.bt-btn i { font-size: 1.05rem; line-height: 1; }

.bt-btn--primary { background: var(--bt-red); border-color: var(--bt-red); color: #fff; }
.bt-btn--primary:hover {
  background: var(--bt-red-600);
  border-color: var(--bt-red-600);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(201, 33, 39, .34);
}

.bt-btn--dark { background: var(--bt-ink); border-color: var(--bt-ink); color: #fff; }
.bt-btn--dark:hover { background: var(--bt-red); border-color: var(--bt-red); color: #fff; transform: translateY(-2px); }

.bt-btn--ghost { border-color: rgba(255, 255, 255, .55); color: #fff; background: transparent; }
.bt-btn--ghost:hover { background: #fff; border-color: #fff; color: var(--bt-ink); transform: translateY(-2px); }

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

.bt-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bt-red);
}
.bt-link-arrow i { transition: transform .3s var(--bt-ease); }
.bt-link-arrow:hover i { transform: translateX(5px); }

/* Reveal on scroll -------------------------------------------------------- */
.bt-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--bt-ease), transform .8s var(--bt-ease);
}
.bt-reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .bt-reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */
.bt-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  transition: background .35s var(--bt-ease), box-shadow .35s var(--bt-ease);
}

.bt-topbar {
  background: var(--bt-cyan);
  color: #fff;
  font-size: .78rem;
  letter-spacing: .03em;
  height: var(--bt-topbar-h);
  transition: height .35s var(--bt-ease), opacity .25s var(--bt-ease);
  overflow: hidden;
}
.bt-topbar .bt-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.bt-topbar a { color: #fff; }
.bt-topbar a:hover { color: rgba(255, 255, 255, .7); }
.bt-topbar-list {
  display: flex;
  align-items: center;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}
.bt-topbar-list li { display: flex; align-items: center; gap: 8px; }
.bt-topbar-list i { font-size: .95rem; }
.bt-topbar-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .7rem;
}

.bt-navbar {
  height: var(--bt-nav-h);
  transition: height .35s var(--bt-ease);
}
.bt-navbar .bt-container {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}

/* Brand */
.bt-brand { display: flex; align-items: center; gap: 13px; flex-shrink: 0; }
.bt-brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 6px;
  background: var(--bt-red);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.5rem;
  box-shadow: 0 8px 20px rgba(201, 33, 39, .32);
  flex-shrink: 0;
}
.bt-brand-text { display: flex; flex-direction: column; gap: 3px; line-height: 1.15; white-space: nowrap; }
.bt-brand-name {
  font-weight: 800;
  font-size: 1.06rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 1px 6px rgba(0, 0, 0, .55);
  transition: color .35s var(--bt-ease), text-shadow .35s var(--bt-ease);
}
.bt-brand-sub {
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: #ff5f65;
  text-shadow: 0 1px 6px rgba(0, 0, 0, .55);
  transition: color .35s var(--bt-ease), text-shadow .35s var(--bt-ease);
}
.bt-header.is-stuck .bt-brand-name,
.bt-header.is-stuck .bt-brand-sub { text-shadow: none; }
.bt-header.is-stuck .bt-brand-sub { color: var(--bt-red); }
.bt-drawer .bt-brand-name,
.bt-drawer .bt-brand-sub { text-shadow: none; }
.bt-drawer .bt-brand-sub { color: var(--bt-red); }

/* Desktop nav */
.bt-nav { margin-left: auto; }
.bt-nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.bt-nav-list > li { position: relative; }
.bt-nav-list > li > a {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding: 12px 14px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: #fff;
  transition: color .25s var(--bt-ease);
}
.bt-nav-list > li > a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--bt-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--bt-ease);
}
.bt-nav-list > li > a:hover::after,
.bt-nav-list > li.is-active > a::after { transform: scaleX(1); }
.bt-nav-list > li > a:hover { color: #fff; }

.bt-nav-cta { margin-left: 18px; flex-shrink: 0; }
.bt-nav-cta .bt-btn { padding: 13px 24px; }

/* Burger */
.bt-burger {
  display: none;
  margin-left: auto;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 6px;
  background: rgba(255, 255, 255, .12);
  color: #fff;
  font-size: 1.4rem;
  align-items: center;
  justify-content: center;
}

/* Scrolled state */
.bt-header.is-stuck { background: #fff; box-shadow: var(--bt-shadow-sm); }
.bt-header.is-stuck .bt-topbar { height: 0; opacity: 0; }
.bt-header.is-stuck .bt-navbar { height: 72px; }
.bt-header.is-stuck .bt-brand-name,
.bt-header.is-stuck .bt-nav-list > li > a { color: var(--bt-ink); }
.bt-header.is-stuck .bt-nav-list > li > a:hover { color: var(--bt-red); }
.bt-header.is-stuck .bt-burger { background: var(--bt-bg-alt); color: var(--bt-ink); }

/* Mobile drawer */
.bt-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(360px, 86vw);
  background: #fff;
  z-index: 1100;
  transform: translateX(100%);
  transition: transform .38s var(--bt-ease);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 24px;
}
.bt-drawer.is-open { transform: none; }
.bt-drawer-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.bt-drawer-close {
  width: 42px; height: 42px;
  border: 0; border-radius: 6px;
  background: var(--bt-bg-alt);
  color: var(--bt-ink);
  font-size: 1.3rem;
}
.bt-drawer-list { list-style: none; margin: 0; padding: 0; }
.bt-drawer-list a {
  display: block;
  padding: 13px 4px;
  border-bottom: 1px solid var(--bt-border);
  font-size: .88rem;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--bt-ink);
}
.bt-drawer-list a:hover { color: var(--bt-red); }
.bt-drawer-foot { margin-top: 26px; display: grid; gap: 12px; }
.bt-drawer-foot .bt-btn { width: 100%; }
.bt-drawer-contact { font-size: .84rem; line-height: 1.7; color: var(--bt-body); }

.bt-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(23, 25, 27, .55);
  backdrop-filter: blur(2px);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all .3s var(--bt-ease);
}
.bt-backdrop.is-open { opacity: 1; visibility: visible; }

/* --------------------------------------------------------------------------
   5. Hero
   -------------------------------------------------------------------------- */
.bt-hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bt-ink-900);
  padding: calc(var(--bt-nav-h) + var(--bt-topbar-h) + 40px) 0 90px;
}
.bt-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
}
.bt-hero-media video,
.bt-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.bt-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(23, 25, 27, .78) 0%, rgba(23, 25, 27, .42) 38%, rgba(23, 25, 27, .92) 100%),
    radial-gradient(120% 70% at 50% 30%, transparent 30%, rgba(23, 25, 27, .5) 100%);
}
.bt-hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 78px 78px;
  mask-image: radial-gradient(90% 60% at 50% 45%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(90% 60% at 50% 45%, #000 20%, transparent 78%);
}
.bt-hero-inner { position: relative; z-index: 2; text-align: center; }

.bt-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 999px;
  background: rgba(255, 255, 255, .07);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  margin-bottom: 26px;
}
.bt-hero-tag .bt-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--bt-red);
  box-shadow: 0 0 0 0 rgba(201, 33, 39, .7);
  animation: bt-pulse 2.4s infinite;
}
@keyframes bt-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(201, 33, 39, .7); }
  70%  { box-shadow: 0 0 0 12px rgba(201, 33, 39, 0); }
  100% { box-shadow: 0 0 0 0 rgba(201, 33, 39, 0); }
}

.bt-hero-line-1 {
  font-size: clamp(1.1rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 2px 14px rgba(0, 0, 0, .55);
  margin-bottom: 6px;
}
.bt-hero-line-2 {
  font-size: clamp(2.2rem, 6.6vw, 4.9rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--bt-red);
  text-shadow: 3px 4px 10px rgba(0, 0, 0, .6);
  margin-bottom: 24px;
}
.bt-hero p {
  max-width: 760px;
  margin: 0 auto 34px;
  color: rgba(255, 255, 255, .84);
  font-size: clamp(.95rem, 1.4vw, 1.08rem);
  line-height: 1.85;
}
.bt-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

.bt-hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(255, 255, 255, .6);
  font-size: 1.6rem;
  animation: bt-bob 2.2s var(--bt-ease) infinite;
}
@keyframes bt-bob {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 10px); }
}

/* --------------------------------------------------------------------------
   6. Statement band
   -------------------------------------------------------------------------- */
.bt-band {
  background: var(--bt-ink-900);
  padding: 30px 0;
  text-align: center;
  border-top: 3px solid var(--bt-red);
}
.bt-band h2 {
  color: #fff;
  font-size: clamp(1.05rem, 2.3vw, 1.7rem);
  letter-spacing: .08em;
}

/* --------------------------------------------------------------------------
   7. Category circles
   -------------------------------------------------------------------------- */
.bt-cats {
  --bt-cat-gap: 26px;
  --bt-cat-cols: 5;
  /* 10 tiles: 5 + 5 on desktop */
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 34px var(--bt-cat-gap);
}
.bt-cat {
  flex: 0 0 calc((100% - (var(--bt-cat-cols) - 1) * var(--bt-cat-gap)) / var(--bt-cat-cols));
  max-width: 216px;
  text-align: center;
}
.bt-cat-thumb {
  position: relative;
  display: block;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid transparent;
  box-shadow: var(--bt-shadow-sm);
  transition: all .4s var(--bt-ease);
}
.bt-cat-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--bt-ease);
}
.bt-cat-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(201, 33, 39, .55));
  opacity: 0;
  transition: opacity .4s var(--bt-ease);
}
.bt-cat:hover .bt-cat-thumb { border-color: var(--bt-red); transform: translateY(-8px); box-shadow: var(--bt-shadow); }
.bt-cat:hover .bt-cat-thumb img { transform: scale(1.1); }
.bt-cat:hover .bt-cat-thumb::after { opacity: 1; }
.bt-cat-name {
  display: block;
  margin-top: 18px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--bt-ink);
}
.bt-cat:hover .bt-cat-name { color: var(--bt-red); }

/* --------------------------------------------------------------------------
   8. Intro + pillars
   -------------------------------------------------------------------------- */
.bt-intro-text { text-align: center; max-width: 900px; margin: 0 auto; }
.bt-pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 52px;
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--bt-shadow-xs);
}
.bt-pillar {
  padding: 34px 30px;
  text-align: center;
  border-right: 1px solid var(--bt-border);
  transition: background .3s var(--bt-ease);
}
.bt-pillar:last-child { border-right: 0; }
.bt-pillar:hover { background: var(--bt-bg-alt); }
.bt-pillar i {
  font-size: 2rem;
  color: var(--bt-red);
  display: block;
  margin-bottom: 14px;
}
.bt-pillar h4 { font-size: .88rem; letter-spacing: .13em; margin-bottom: 8px; }
.bt-pillar p { font-size: .88rem; color: var(--bt-muted); }

/* --------------------------------------------------------------------------
   9. Services tabs
   -------------------------------------------------------------------------- */
.bt-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 40px 0 46px;
  border: 0;
}
.bt-tabs .nav-link {
  padding: 13px 26px;
  border: 1px solid var(--bt-border);
  border-radius: 4px;
  background: #fff;
  color: var(--bt-ink);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: all .3s var(--bt-ease);
}
.bt-tabs .nav-link:hover { border-color: var(--bt-red); color: var(--bt-red); }
.bt-tabs .nav-link.active {
  background: var(--bt-red);
  border-color: var(--bt-red);
  color: #fff;
  box-shadow: 0 10px 24px rgba(201, 33, 39, .28);
}

.bt-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.bt-card {
  background: #fff;
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .4s var(--bt-ease);
}
.bt-card:hover { transform: translateY(-8px); box-shadow: var(--bt-shadow); border-color: transparent; }
.bt-card-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bt-bg-alt); }
.bt-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--bt-ease); }
.bt-card:hover .bt-card-media img { transform: scale(1.07); }
.bt-card-num {
  position: absolute;
  left: 0;
  bottom: 0;
  background: var(--bt-red);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  padding: 7px 16px;
}
.bt-card-body { padding: 26px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.bt-card-body h4 { margin-bottom: 12px; letter-spacing: .06em; }
.bt-card-body p { font-size: .92rem; color: var(--bt-body); }
.bt-card-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  font-size: .87rem;
}
.bt-card-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 6px;
  color: var(--bt-body);
}
.bt-card-list li::before {
  content: "\F26E";
  font-family: "bootstrap-icons";
  position: absolute;
  left: 0;
  top: -1px;
  color: var(--bt-red);
  font-size: .8rem;
}

/* --------------------------------------------------------------------------
   10. Why choose us
   -------------------------------------------------------------------------- */
.bt-why {
  position: relative;
  background: var(--bt-ink-800);
  overflow: hidden;
}
.bt-why-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .16;
}
.bt-why .bt-container { position: relative; z-index: 1; }
.bt-features {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
  margin-top: 52px;
}
.bt-feature {
  text-align: center;
  padding: 32px 20px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--bt-radius);
  background: rgba(255, 255, 255, .04);
  transition: all .35s var(--bt-ease);
}
.bt-feature:hover {
  background: rgba(201, 33, 39, .14);
  border-color: rgba(201, 33, 39, .5);
  transform: translateY(-6px);
}
.bt-feature-icon {
  width: 86px;
  height: 86px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  transition: transform .35s var(--bt-ease);
}
.bt-feature:hover .bt-feature-icon { transform: scale(1.07); }
.bt-feature-icon img { width: 100%; height: 100%; object-fit: contain; }
.bt-feature h4 {
  font-size: .8rem;
  letter-spacing: .1em;
  color: #fff;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. Industries
   -------------------------------------------------------------------------- */
.bt-industries {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 50px;
}
.bt-industry {
  position: relative;
  display: block;
  min-height: 380px;
  border-radius: var(--bt-radius);
  overflow: hidden;
  isolation: isolate;
}
.bt-industry img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s var(--bt-ease);
  z-index: -2;
}
.bt-industry::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(23, 25, 27, .1) 25%, rgba(23, 25, 27, .88) 100%);
  transition: background .5s var(--bt-ease);
}
.bt-industry:hover img { transform: scale(1.08); }
.bt-industry:hover::after { background: linear-gradient(180deg, rgba(201, 33, 39, .2) 15%, rgba(23, 25, 27, .93) 100%); }
.bt-industry-body {
  position: absolute;
  inset: auto 0 0 0;
  padding: 30px 28px;
  color: #fff;
}
.bt-industry-body h3 { color: #fff; font-size: 1.35rem; margin-bottom: 8px; }
.bt-industry-body p {
  font-size: .88rem;
  color: rgba(255, 255, 255, .8);
  margin-bottom: 14px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all .45s var(--bt-ease);
}
.bt-industry:hover .bt-industry-body p { max-height: 140px; opacity: 1; }
.bt-industry-body .bt-link-arrow { color: #fff; }

/* --------------------------------------------------------------------------
   12. Split feature (mission / quality)
   -------------------------------------------------------------------------- */
.bt-split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(36px, 5vw, 76px);
  align-items: center;
}
.bt-split--reverse .bt-split-media { order: 2; }

.bt-collage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(3, 108px);
  gap: 16px;
}
.bt-collage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--bt-radius);
  box-shadow: var(--bt-shadow-sm);
}
.bt-collage img:nth-child(1) { grid-row: span 2; }
.bt-collage img:nth-child(2) { grid-row: span 1; }
.bt-collage img:nth-child(3) { grid-row: span 2; }
.bt-collage img:nth-child(4) { grid-row: span 1; }

.bt-frame {
  position: relative;
  border-radius: var(--bt-radius);
  overflow: hidden;
  box-shadow: var(--bt-shadow);
}
.bt-frame img { display: block; width: 100%; }
.bt-frame--offset::before {
  content: "";
  position: absolute;
  inset: auto -14px -14px auto;
  width: 55%;
  height: 55%;
  border: 3px solid var(--bt-red);
  border-radius: var(--bt-radius);
  z-index: -1;
}

.bt-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  margin-top: 38px;
}
.bt-stat { border-left: 3px solid var(--bt-red); padding-left: 18px; }
.bt-stat-num {
  font-family: "Poppins", sans-serif;
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1;
  color: var(--bt-ink);
  letter-spacing: .01em;
}
.bt-section--dark .bt-stat-num { color: #fff; }
.bt-stat-label {
  display: block;
  margin-top: 8px;
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bt-muted);
}

/* --------------------------------------------------------------------------
   13. Values grid
   -------------------------------------------------------------------------- */
.bt-values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 50px;
}
.bt-value {
  position: relative;
  padding: 38px 32px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--bt-radius);
  background: rgba(255, 255, 255, .04);
  transition: all .4s var(--bt-ease);
  overflow: hidden;
}
.bt-value::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--bt-red);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .45s var(--bt-ease);
}
.bt-value:hover { background: rgba(255, 255, 255, .07); transform: translateY(-6px); }
.bt-value:hover::before { transform: scaleY(1); }
.bt-value-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(201, 33, 39, .18);
  color: #ff5f65;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.bt-value h3 { font-size: 1.15rem; margin-bottom: 14px; }
.bt-value p, .bt-value li { font-size: .92rem; color: rgba(255, 255, 255, .72); }
.bt-value ul { margin: 0; padding: 0; list-style: none; }
.bt-value ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  line-height: 1.65;
}
.bt-value ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bt-red);
}
.bt-value strong { color: #fff; font-weight: 600; }

/* --------------------------------------------------------------------------
   14. Project (EU)
   -------------------------------------------------------------------------- */
.bt-project-panel {
  background: #fff;
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
  box-shadow: var(--bt-shadow-sm);
  overflow: hidden;
  display: grid;
  grid-template-columns: 380px 1fr;
}
.bt-project-aside {
  padding: 40px 34px;
  background: var(--bt-bg-alt);
  border-right: 1px solid var(--bt-border);
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.bt-project-aside img {
  width: 100%;
  border-radius: var(--bt-radius-sm);
  background: #fff;
  padding: 14px;
  box-shadow: var(--bt-shadow-xs);
}
.bt-project-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  align-self: flex-start;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(0, 51, 153, .08);
  color: #039;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.bt-project-body { padding: 44px 42px; }
.bt-project-body > h3 { margin-bottom: 10px; }
.bt-project-quote {
  font-size: 1.02rem;
  color: var(--bt-ink);
  font-weight: 500;
  line-height: 1.75;
  border-left: 3px solid var(--bt-red);
  padding-left: 20px;
  margin: 22px 0 28px;
}
.bt-defs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 32px;
  margin: 0;
}
.bt-def dt {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--bt-muted);
  margin-bottom: 5px;
}
.bt-def dd {
  margin: 0;
  font-size: .95rem;
  font-weight: 500;
  color: var(--bt-ink);
  line-height: 1.6;
}
.bt-def dd small { display: block; font-weight: 400; color: var(--bt-body); font-size: .86rem; }

/* --------------------------------------------------------------------------
   15. Contact CTA
   -------------------------------------------------------------------------- */
.bt-cta {
  position: relative;
  overflow: hidden;
  background: var(--bt-red);
  color: #fff;
  padding: clamp(50px, 6vw, 78px) 0;
}
.bt-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 60px 60px;
}
.bt-cta .bt-container {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.bt-cta h2 { color: #fff; margin-bottom: 12px; }
.bt-cta p { color: rgba(255, 255, 255, .86); max-width: 620px; margin: 0; }
.bt-cta .bt-btn--ghost { border-color: #fff; }

/* Contact cards */
.bt-contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 50px;
}
.bt-contact-card {
  background: #fff;
  border: 1px solid var(--bt-border);
  border-radius: var(--bt-radius);
  padding: 36px 32px;
  transition: all .35s var(--bt-ease);
}
.bt-contact-card:hover { transform: translateY(-6px); box-shadow: var(--bt-shadow); border-color: transparent; }
.bt-contact-card i {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 8px;
  background: var(--bt-red-faded);
  color: var(--bt-red);
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.bt-contact-card h4 { font-size: .82rem; letter-spacing: .15em; margin-bottom: 10px; }
.bt-contact-card p, .bt-contact-card a { font-size: .95rem; color: var(--bt-body); }
.bt-contact-card a:hover { color: var(--bt-red); }

/* --------------------------------------------------------------------------
   16. Footer
   -------------------------------------------------------------------------- */
.bt-footer {
  position: relative;
  background: var(--bt-ink-900);
  color: rgba(255, 255, 255, .62);
  overflow: hidden;
}
.bt-footer-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(1) contrast(.85);
  opacity: .09;
}
.bt-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(23, 25, 27, .55) 0%, rgba(23, 25, 27, .92) 100%);
}
.bt-footer .bt-container { position: relative; z-index: 1; }
.bt-footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding: clamp(52px, 6vw, 80px) 0 46px;
}
.bt-footer .bt-brand { margin-bottom: 22px; }
.bt-footer .bt-brand-name { color: #fff; }
.bt-footer p { font-size: .92rem; line-height: 1.8; }
.bt-footer h6 {
  color: #fff;
  font-size: .76rem;
  letter-spacing: .18em;
  margin-bottom: 20px;
}
.bt-footer-list { list-style: none; margin: 0; padding: 0; }
.bt-footer-list li { margin-bottom: 11px; }
.bt-footer-list a { color: rgba(255, 255, 255, .62); font-size: .92rem; }
.bt-footer-list a:hover { color: #fff; padding-left: 5px; }
.bt-footer-contact { list-style: none; margin: 0; padding: 0; }
.bt-footer-contact li {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: .92rem;
  line-height: 1.65;
}
.bt-footer-contact i { color: var(--bt-red); font-size: 1.05rem; margin-top: 3px; }
.bt-footer-contact a { color: rgba(255, 255, 255, .62); }
.bt-footer-contact a:hover { color: #fff; }

.bt-socials { display: flex; gap: 10px; margin-top: 22px; }
.bt-socials a {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: rgba(255, 255, 255, .08);
  color: #fff;
  font-size: 1rem;
  transition: all .3s var(--bt-ease);
}
.bt-socials a:hover { background: var(--bt-red); transform: translateY(-3px); }

.bt-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 24px 0 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: .85rem;
}
.bt-footer-bottom nav { display: flex; flex-wrap: wrap; gap: 22px; }
.bt-footer-bottom a { color: rgba(255, 255, 255, .62); }
.bt-footer-bottom a:hover { color: #fff; }

/* Back to top */
.bt-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 900;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 6px;
  background: var(--bt-red);
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 10px 24px rgba(201, 33, 39, .35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all .35s var(--bt-ease);
}
.bt-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.bt-top:hover { background: var(--bt-ink); }

/* --------------------------------------------------------------------------
   17. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
  .bt-nav-list > li > a { padding: 12px 10px; font-size: .74rem; }
  .bt-nav-cta { margin-left: 10px; }
  .bt-nav-cta .bt-btn { padding: 12px 18px; font-size: .72rem; }
}

@media (max-width: 1024px) {
  .bt-nav, .bt-nav-cta { display: none; }
  .bt-burger { display: flex; }
  .bt-cats { --bt-cat-cols: 3; --bt-cat-gap: 22px; }
  .bt-features { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .bt-industries { grid-template-columns: 1fr 1fr; }
  .bt-values { grid-template-columns: 1fr; }
  .bt-split { grid-template-columns: 1fr; }
  .bt-split--reverse .bt-split-media { order: 0; }
  .bt-project-panel { grid-template-columns: 1fr; }
  .bt-project-aside { border-right: 0; border-bottom: 1px solid var(--bt-border); flex-direction: row; align-items: center; }
  .bt-project-aside img { max-width: 320px; }
  .bt-footer-main { grid-template-columns: 1fr 1fr; gap: 36px; }
  .bt-contact-grid { grid-template-columns: 1fr; }
  .bt-topbar-tag { display: none; }
  .bt-topbar .bt-container { justify-content: flex-start; }
}

@media (max-width: 768px) {
  .bt-topbar-list { gap: 14px; }
  .bt-hide-sm { display: none !important; }
  .bt-pillars { grid-template-columns: 1fr; }
  .bt-pillar { border-right: 0; border-bottom: 1px solid var(--bt-border); }
  .bt-pillar:last-child { border-bottom: 0; }
  .bt-cats { --bt-cat-cols: 2; }
  .bt-features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bt-industries { grid-template-columns: 1fr; }
  .bt-industry { min-height: 300px; }
  .bt-industry-body p { max-height: 140px; opacity: 1; }
  .bt-project-aside { flex-direction: column; padding: 28px 24px; }
  .bt-project-body { padding: 30px 24px; }
  .bt-defs { grid-template-columns: 1fr; }
  .bt-footer-main { grid-template-columns: 1fr; }
  .bt-collage { grid-template-rows: repeat(3, 88px); gap: 12px; }
  .bt-cta .bt-container { flex-direction: column; align-items: flex-start; text-align: left; }
  .bt-tabs .nav-link { padding: 11px 16px; font-size: .7rem; }
}

@media (max-width: 480px) {
  .bt-container { padding-inline: 18px; }
  .bt-brand-name { font-size: .92rem; }
  .bt-brand-mark { width: 40px; height: 40px; font-size: 1.25rem; }
  .bt-features { grid-template-columns: 1fr; }
  .bt-hero-actions .bt-btn { width: 100%; }
}