/* ==========================================================
   BMT Krom — bmtkrom.com
   ========================================================== */

:root {
  --bg: #0b1220;
  --bg-2: #0f172a;
  --surface: #ffffff;
  --surface-soft: #f6f8fb;
  --ink: #0b1220;
  --ink-soft: #475569;
  --line: #e6eaf0;
  --primary: #0ea5e9;
  --primary-2: #3b82f6;
  --accent: #22d3ee;
  --danger: #dc2626;
  --ok: #16a34a;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.05);
  --shadow-md: 0 10px 25px -10px rgba(15,23,42,.18);
  --shadow-lg: 0 25px 50px -20px rgba(15,23,42,.28);
  --container: 1200px;
}

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}
img,svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1,h2,h3,h4 { font-weight: 800; letter-spacing: 0; line-height: 1.15; margin: 0 0 .4em; }
h1 { font-size: clamp(2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--container); padding: 0 20px; margin: 0 auto; }
.skip-link { position: absolute; left: -9999px; top: 0; background: #000; color: #fff; padding: 8px 12px; }
.skip-link:focus { left: 12px; top: 12px; z-index: 9999; border-radius: 6px; }

.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(14,165,233,.08);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.grad {
  background: linear-gradient(90deg, #38bdf8, #22d3ee 60%, #a5f3fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============== Header ============== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  height: 72px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { height: 44px; width: auto; display: block; }
.footer-logo { height: 48px; width: auto; display: block; margin-bottom: 14px; filter: brightness(0) invert(1); }

.nav { justify-self: center; min-width: 0; }
.nav ul { display: flex; justify-content: center; gap: 6px; list-style: none; padding: 0; margin: 0; }
.nav a {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  font-size: .95rem;
  color: var(--ink);
  transition: background .2s, color .2s;
}
.nav a:hover { background: var(--surface-soft); color: var(--primary); }

.cta-phone {
  display: inline-flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  padding: 10px 16px;
  border-radius: 12px;
  font-weight: 700;
  font-size: .95rem;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .2s;
}
.cta-phone:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.cta-phone svg { stroke: #fff; }

.hamburger {
  display: none;
  width: 44px; height: 44px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  flex-direction: column;
  justify-content: space-between;
}
.hamburger span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s, opacity .25s; }
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.mobile-nav { background: #fff; border-top: 1px solid var(--line); }
.mobile-nav ul { list-style: none; padding: 12px 20px 20px; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a { display: block; padding: 14px 14px; border-radius: 10px; font-weight: 600; }
.mobile-nav a:hover { background: var(--surface-soft); }
.mobile-nav .m-call { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; text-align: center; margin-top: 6px; }

@media (max-width: 980px) {
  .header-inner { display: flex; }
  .nav { display: none; }
  .cta-phone { margin-left: auto; padding: 10px; }
  .cta-phone span { display: none; }
  .hamburger { display: flex; }
}

/* ============== Hero / Slider ============== */
.hero { background: var(--bg); }
.slider {
  position: relative;
  overflow: hidden;
  min-height: 580px;
  height: 85vh;
  max-height: 1200px;
}
.slides { position: relative; min-height: 580px; height: 100%; }
.slide {
  position: absolute; inset: 0;
  display: flex; align-items: center;
  background: var(--bg);
  background-size: cover;
  background-position: center;
  color: #fff;
  opacity: 0;
  transition: opacity .8s ease;
  pointer-events: none;
  isolation: isolate;
}
.slide-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,18,32,.85), rgba(30,58,138,.6));
  z-index: 2;
}
.slide::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(80% 50% at 80% 20%, rgba(255,255,255,.08), transparent 60%),
    radial-gradient(60% 40% at 10% 80%, rgba(34,211,238,.18), transparent 60%);
  pointer-events: none;
}
.slide.is-active { opacity: 1; pointer-events: auto; }

.slide-inner { position: relative; z-index: 10; padding: 80px 20px; max-width: 820px; }
.slide .eyebrow { background: rgba(255,255,255,.1); color: #a5f3fc; }
.slide h1, .slide h2 { color: #fff; font-size: clamp(2.2rem, 5.5vw, 4rem); }
.slide .lead { color: #cbd5e1; font-size: clamp(1rem, 1.4vw, 1.18rem); max-width: 620px; margin-bottom: 28px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  border: 0;
  transition: transform .15s, box-shadow .2s, background .2s, color .2s, border-color .2s;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 10px 25px -10px rgba(14,165,233,.6);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -10px rgba(14,165,233,.7); }
.btn-ghost {
  background: rgba(255,255,255,.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255,255,255,.15); }
.btn-lg { padding: 16px 26px; font-size: 1.05rem; }

.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  display: inline-flex; align-items: center; justify-content: center;
  z-index: 3;
  transition: background .2s, transform .15s;
}
.slider-arrow:hover { background: rgba(255,255,255,.25); }
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }
@media (max-width: 640px) { .slider-arrow { display: none; } }

.dots {
  position: absolute; bottom: 24px; left: 0; right: 0;
  display: flex; justify-content: center; gap: 10px;
  z-index: 3;
}
.dots button {
  width: 32px; height: 4px;
  border-radius: 4px;
  background: rgba(255,255,255,.3);
  border: 0;
  transition: background .2s, width .2s;
}
.dots button[aria-current="true"] { background: #fff; width: 48px; }

/* ============== Trust strip ============== */
.trust { background: #fff; border-bottom: 1px solid var(--line); }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 28px 20px;
  text-align: center;
}
.trust-grid > div { display: flex; flex-direction: column; gap: 4px; }
.trust-grid strong {
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2rem);
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.trust-grid span { font-size: .85rem; color: var(--ink-soft); font-weight: 500; }
@media (max-width: 640px) {
  .trust-grid { grid-template-columns: 1fr; gap: 16px; }
}

/* ============== Sections ============== */
.section { padding: 90px 0; }
.section-alt { background: var(--surface-soft); }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head p { color: var(--ink-soft); font-size: 1.05rem; }

/* ============== Products ============== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.product-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(14,165,233,.4); }

.pc-img {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, #eef2f7, #dbe3ec);
}
.pc-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.product-card:hover .pc-img img { transform: scale(1.05); }
.pc-img::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(11,18,32,.18));
}
.pc-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-card h3 { margin: 0; }
.product-card p { color: var(--ink-soft); font-size: .94rem; margin: 0; flex: 1; }
.product-card .link-arrow { margin-top: 6px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 700; font-size: .92rem;
  color: var(--primary-2);
  transition: gap .2s;
}
.link-arrow:hover { gap: 10px; }

@media (max-width: 980px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .product-grid { grid-template-columns: 1fr; } }

/* ============== About ============== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 { margin-bottom: 18px; }
.about-text p { color: var(--ink-soft); font-size: 1.02rem; }
.check-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; }
.check-list li {
  position: relative;
  padding-left: 32px;
  color: var(--ink);
  font-weight: 500;
}
.check-list li::before {
  content: '';
  position: absolute; left: 0; top: 6px;
  width: 20px; height: 20px;
  background:
    linear-gradient(135deg, var(--primary), var(--primary-2));
  border-radius: 6px;
}
.check-list li::after {
  content: '';
  position: absolute; left: 6px; top: 10px;
  width: 8px; height: 4px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}

.about-text h4 {
  margin-top: 22px;
  margin-bottom: 6px;
  color: var(--primary-2);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .12em;
}

.about-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-self: stretch;
}
.about-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.about-media img:nth-child(1) { transform: translateY(20px); }
.about-media img:nth-child(2) { transform: translateY(-20px); }

@media (max-width: 880px) {
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-media { grid-template-columns: 1fr 1fr; }
  .about-media img { height: 240px; }
  .about-media img:nth-child(1),
  .about-media img:nth-child(2) { transform: none; }
}

/* ============== Services ============== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(14,165,233,.4); }
.sc-img { aspect-ratio: 16 / 10; overflow: hidden; }
.sc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.service-card:hover .sc-img img { transform: scale(1.05); }
.service-card h3 { margin: 22px 22px 8px; }
.service-card p { margin: 0 22px 22px; color: var(--ink-soft); font-size: .94rem; }
@media (max-width: 880px) { .service-grid { grid-template-columns: 1fr; } }

/* ============== Quality + Applications ============== */
.quality-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 36px;
  align-items: start;
}
.check-list.big li { padding: 8px 0 8px 36px; font-size: 1.02rem; border-bottom: 1px dashed var(--line); }
.check-list.big li:last-child { border-bottom: 0; }
.check-list.big li::before { top: 12px; }
.check-list.big li::after { top: 16px; }

.apps-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: sticky; top: 90px;
}
.apps-card h3 { margin-top: 0; }
.apps-card .muted { color: var(--ink-soft); font-size: .94rem; }
.tag-list {
  list-style: none; padding: 0; margin: 18px 0 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.tag-list li {
  background: linear-gradient(135deg, rgba(59,130,246,.08), rgba(14,165,233,.08));
  color: var(--primary-2);
  font-weight: 600;
  font-size: .85rem;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(14,165,233,.18);
}
@media (max-width: 880px) {
  .quality-grid { grid-template-columns: 1fr; }
  .apps-card { position: static; }
}

/* ============== Contact ============== */
.contact-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 32px;
  align-items: start;
}
.contact-info { display: grid; gap: 12px; }
.info-card {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px;
  transition: border-color .2s, transform .15s, box-shadow .2s;
}
a.info-card:hover { border-color: var(--primary); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.ic-ico {
  grid-row: span 2;
  align-self: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-2);
  background: linear-gradient(135deg, rgba(14,165,233,.1), rgba(59,130,246,.08));
  border: 1px solid rgba(14,165,233,.16);
}
.ic-ico svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ic-label { font-size: .78rem; color: var(--ink-soft); font-weight: 600; text-transform: uppercase; letter-spacing: .1em; }
.info-card strong { font-weight: 700; font-size: .98rem; line-height: 1.4; }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid; gap: 18px;
  box-shadow: var(--shadow-sm);
}
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 8px; font-size: .9rem; font-weight: 600; color: var(--ink); }
.contact-form label > span em { color: var(--danger); font-style: normal; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  font: inherit;
  padding: 13px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 0;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(14,165,233,.15);
}
.contact-form textarea { resize: vertical; min-height: 120px; }

.hp { position: absolute; left: -9999px; height: 0; width: 0; overflow: hidden; }

.btn-spin {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.form-status { margin: 0; font-size: .92rem; min-height: 1.2em; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: var(--danger); }

@media (max-width: 880px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 22px; }
  .contact-form .row { grid-template-columns: 1fr; }
}

/* ============== Map ============== */
.map-section { line-height: 0; }
.map-section iframe {
  width: 100%;
  height: 420px;
  border: 0;
  display: block;
  filter: grayscale(.2) contrast(1.05);
}

/* ============== Footer ============== */
.site-footer {
  background: var(--bg);
  color: #cbd5e1;
  padding: 70px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.site-footer a { color: #cbd5e1; transition: color .2s; }
.site-footer a:hover { color: #fff; }
.site-footer .muted { color: #94a3b8; margin-top: 12px; font-size: .92rem; }
.copy { padding-top: 24px; color: #94a3b8; }

@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============== Mobile bottom call bar ============== */
.mobile-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: none;
  z-index: 60;
  background: rgba(11,18,32,.96);
  backdrop-filter: blur(8px);
  padding: 10px max(10px, env(safe-area-inset-left)) calc(10px + env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-right));
  gap: 10px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.mobile-bar a {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 12px;
  border-radius: 12px;
  font-weight: 700;
  color: #fff;
  font-size: .95rem;
}
.mb-call { background: linear-gradient(135deg, var(--primary), var(--primary-2)); }

@media (max-width: 880px) {
  .mobile-bar { display: flex; }
  body { padding-bottom: 78px; }
}

/* ============== Reduced motion ============== */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}