/*
  style.css
  - Keep this file organized by sections.
  - Avoid introducing new colors; use existing palette.
*/

/* =========================
   Base
   ========================= */

html {
  scroll-behavior: smooth;
}

/* =========================
   Accessibility
   ========================= */

.skip-link {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 9999;
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: var(--color-background-dark);
  border: 2px solid var(--color-primary);
  color: #ffffff;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: scale(1.04);
}

/* Consistent keyboard focus ring */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

:root {
  --color-primary: #0da6f2;
  --color-accent: #fe7f82;
  --color-background-dark: #101c22;
  --color-card-dark: #1a1d23;
  --color-border-dark: #223c49;
}

/* =========================
   Scrollbar
   ========================= */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #101c22;
}

::-webkit-scrollbar-thumb {
  background: #223c49;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #0da6f2;
}

/* =========================
   Background helpers
   ========================= */

/* =========================
   Tailwind utility fallbacks
   (Protects against Tailwind CDN/config load issues)
   ========================= */

.bg-background-dark {
  background-color: var(--color-background-dark);
}

.bg-card-dark {
  background-color: var(--color-card-dark);
}

.border-border-dark {
  border-color: var(--color-border-dark);
}

.text-primary {
  color: var(--color-primary);
}

.text-accent {
  color: var(--color-accent);
}

.bg-primary {
  background-color: var(--color-primary);
}

.border-primary {
  border-color: var(--color-primary);
}

.bg-primary\/10 {
  background-color: rgba(13, 166, 242, 0.10);
}

.border-primary\/20 {
  border-color: rgba(13, 166, 242, 0.20);
}

.hover\:text-accent:hover {
  color: var(--color-accent);
}

.bg-accent {
  background-color: var(--color-accent);
}

.border-accent {
  border-color: var(--color-accent);
}

.bg-accent\/10 {
  background-color: rgba(254, 127, 130, 0.10);
}

.border-accent\/20 {
  border-color: rgba(254, 127, 130, 0.20);
}

.bg-technical-grid {
  background-size: 40px 40px;
}

.technical-grid {
  background-image:
    linear-gradient(rgba(34, 60, 73, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 60, 73, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
}

.grid-bg {
  background-size: 32px 32px;
}

/* =========================
   Inline-style extractions
   ========================= */

.bg-dot-grid-24 {
  background-image: radial-gradient(#223c49 1px, transparent 1px);
  background-size: 24px 24px;
}

.bg-dot-grid-20 {
  background-image: radial-gradient(#315668 1px, transparent 1px);
  background-size: 20px 20px;
}

.bg-home-application-vest {
  background-image: url("../images/home-application-vest.png");
}

.bg-home-application-inserts {
  background-image: url("../images/home-application-inserts.jpg");
}

.bg-home-application-helmet {
  background-image: url("../images/home-application-helmet.png");
}

.bg-home-application-vehicle {
  background-image: url("../images/home-application-vehicle.png");
}

.bg-home-application-marine {
  background-image: url("../images/home-application-marine.png");
}

.bg-home-application-aircraft {
  background-image: url("../images/home-application-aircraft.png");
}

.bg-home-ud-diagram {
  background-image: url("../images/home-ud-diagram.jpg");
  filter: grayscale(100%) contrast(120%);
}

.bg-ud-technology-layering {
  background-image: url("../images/ud-technology-layering.png");
}

.bg-banner-montage-1 {
  background-image: url("../images/banner-montage-1.jpg");
}

.bg-banner-montage-2 {
  background-image: url("../images/banner-montage-2.jpg");
}

.bg-banner-montage-3 {
  background-image: url("../images/banner-montage-3.jpg");
}

.bg-banner-montage-4 {
  background-image: url("../images/banner-montage-4.jpg");
}

/* =========================
   Hero: subtle animated hex pattern
   ========================= */

.hero-hex-pattern {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: #101c22;
  background-image: radial-gradient(
    ellipse at center,
    rgba(13, 166, 242, 0.14),
    rgba(16, 28, 34, 0.92) 60%,
    #101c22 100%
  );
  overflow: hidden;
}

.hero-hex-pattern__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* =========================
   Components: logo
   ========================= */

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  color: #ffffff;
  text-decoration: none;
}

.site-logo__text {
  line-height: 1;
}

.site-logo__mark {
  color: var(--color-accent);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: 3.25rem;
}

.site-logo__tagline {
  margin-top: 0.25rem;
  color: color-mix(in srgb, var(--color-primary) 90%, transparent);
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

@media (max-width: 640px) {
  .site-logo__tagline {
    font-size: 0.6875rem;
  }
}

@supports not (color: color-mix(in srgb, #000 50%, transparent)) {
  .site-logo__tagline {
    color: rgba(13, 166, 242, 0.9);
  }
}

/* =========================
   Components: buttons
   ========================= */

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(254, 127, 130, 0.30);
}

.btn-accent:hover {
  background-color: color-mix(in srgb, var(--color-accent) 90%, #ffffff);
}

@supports not (color: color-mix(in srgb, #000 50%, #fff)) {
  .btn-accent:hover {
    background-color: #ff9aa0;
  }
}

/* =========================
   Micro interactions
   ========================= */

.micro-underline {
  position: relative;
}

.micro-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35em;
  height: 2px;
  background: currentColor;
  opacity: 0.0;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms ease, opacity 220ms ease;
}

.micro-underline:hover::after,
.micro-underline:focus-visible::after {
  opacity: 0.7;
  transform: scaleX(1);
}

/* Accent hover helper: makes underline + text use accent */
.micro-accent:hover,
.micro-accent:focus-visible {
  color: var(--color-accent);
}

.micro-lift {
  transition: transform 240ms ease, filter 240ms ease;
  will-change: transform;
}

.micro-lift:hover {
  transform: translateY(-2px);
}

/* =========================
   Scroll reveal (fade-in on scroll)
   ========================= */

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms ease, transform 700ms ease;
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes pulse-fallback {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.25);
    opacity: 0.55;
  }
}

.animate-pulse {
  animation: pulse-fallback 1.35s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .micro-underline::after {
    transition: none;
  }
  .micro-lift {
    transition: none;
  }
  .animate-pulse {
    animation: none;
  }
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* =========================
   Diagonal image banner
   ========================= */

.diagonal-image-banner {
  --cut: 10%;
  background-color: #101c22;
}

.diagonal-image-banner__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 1024px) {
  .diagonal-image-banner__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .diagonal-image-banner__grid > :not(:first-child) {
    margin-left: calc(var(--cut) * -1 - 8px);
  }
}

.diagonal-image-banner__tile {
  position: relative;
  height: 300px;
  background-color: #101c22;
  background-position: center;
  background-size: cover;
  overflow: hidden;
  transition: transform 600ms ease;
  will-change: transform;
}

.diagonal-image-banner__tile:hover {
  transform: scale(1.02);
}

@media (prefers-reduced-motion: reduce) {
  .diagonal-image-banner__tile {
    transition: none;
  }
}

.diagonal-image-banner__tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 28, 34, 0.25), rgba(16, 28, 34, 0.75));
}

.diagonal-image-banner__grid > :nth-child(1) {
  z-index: 1;
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--cut)) 100%, 0 100%);
}

.diagonal-image-banner__grid > :nth-child(2),
.diagonal-image-banner__grid > :nth-child(3) {
  z-index: 2;
  clip-path: polygon(var(--cut) 0, 100% 0, calc(100% - var(--cut)) 100%, 0 100%);
}

.diagonal-image-banner__grid > :nth-child(4) {
  z-index: 3;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%);
}