/* bytebased.at – dark tech aesthetic with interactive effects */

:root {
  --color-bg: #06060a;
  --color-text: #e8e8ec;
  --color-text-muted: #6a6a80;
  --color-accent: #4a8eff;
  --color-accent-glow: rgba(74, 142, 255, 0.6);
  --font-sans: system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --space-unit: 1rem;
  --space-lg: 2rem;
  --radius: 0.75rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  cursor: crosshair;
}

/* Canvas: full viewport particle network */
#particle-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Spotlight: radial glow following cursor */
.spotlight-layer {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(
    600px circle at var(--mx, 50%) var(--my, 50%),
    rgba(74, 142, 255, 0.07),
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
}

body.has-pointer .spotlight-layer {
  opacity: 1;
}

/* Header – fixed at top so layout stays correct with fixed main */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: var(--space-lg) var(--space-unit);
  text-align: center;
}

.site-brand {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.3s ease;
  user-select: none;
}

.site-brand:hover {
  color: var(--color-accent);
}

.site-brand.scrambling {
  color: var(--color-accent);
}

/* Main – fixed full viewport so card aligns with cube center (viewport center) */
.site-main {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-unit);
  pointer-events: none;
}

.site-main .contact-card {
  pointer-events: auto;
}

/* Card with glow border */
.contact-card {
  position: relative;
  width: 100%;
  max-width: 24rem;
  border-radius: var(--radius);
  background: rgba(12, 12, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  transition: transform 0.2s ease-out;
  transform-style: preserve-3d;
  will-change: transform;
}

.contact-card__glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 0;
  /* Glow border follows cursor via --gx, --gy set by JS */
  background: radial-gradient(
    300px circle at var(--gx, 50%) var(--gy, 50%),
    var(--color-accent-glow),
    transparent 60%
  );
}

.contact-card:hover .contact-card__glow {
  opacity: 1;
}

/* Inner border via pseudo-element */
.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(
    400px circle at var(--gx, 50%) var(--gy, 50%),
    rgba(74, 142, 255, 0.4),
    rgba(255, 255, 255, 0.06) 60%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.contact-card:hover::before {
  opacity: 1;
}

.contact-card__content {
  position: relative;
  z-index: 2;
  padding: var(--space-lg);
}

.contact-card__brand {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.contact-card__title {
  margin: 0 0 var(--space-unit);
  font-size: 1.25rem;
  font-weight: 600;
}

.contact-card__address {
  margin: 0;
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-card__line {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.contact-card__link {
  display: inline-block;
  color: var(--color-accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: transform 0.2s ease-out, color 0.2s ease;
  will-change: transform;
  margin-top: 0.5rem;
}

.contact-card__link:hover {
  color: #fff;
}

/* Products block */
.products {
  margin-top: 1.25rem;
}

.products__label {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.products__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.products__item {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.products__link {
  color: var(--color-accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.products__link:hover {
  color: #fff;
  text-decoration: underline;
}

.products__link--muted {
  color: rgba(232, 232, 236, 0.75);
}

.products__sep {
  color: rgba(232, 232, 236, 0.25);
}

/* Footer – fixed at bottom so layout stays correct with fixed main */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: var(--space-unit);
  text-align: center;
}

.site-footer__copy {
  margin: 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Responsive */
@media (min-width: 48rem) {
  .site-brand {
    font-size: 1rem;
  }
  .contact-card__title {
    font-size: 1.5rem;
  }
}