:root {
  color-scheme: light;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 2000;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: var(--color-white);
  color: #1d2d4a;
  font-weight: 700;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

:where(a, button):focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
}

main,
.section {
  scroll-margin-top: 8rem;
}

.nav-toggle {
  min-width: 44px;
  min-height: 44px;
}

.nav-toggle-bar {
  margin-left: auto;
  margin-right: auto;
}

.contact-card a {
  overflow-wrap: anywhere;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --color-primary: #adc7fa;
    --color-primary-strong: #d4e2ff;
    --color-accent: #91acd9;
    --color-surface: #172235;
    --color-surface-strong: #263751;
    --color-text: #eef3fc;
    --color-text-muted: #bdc9de;
    --color-border: #53647f;
    --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.25);
  }

  body {
    background: linear-gradient(180deg, #111b2c 0%, #121c2c 22%, #172235 100%);
  }

  .site-header {
    background: rgba(17, 27, 44, 0.96);
    border-bottom-color: var(--color-border);
  }

  .brand-logo,
  .footer-logo {
    background: transparent;
    filter: invert(1);
    mix-blend-mode: screen;
  }

  .hero-panel {
    background: #1d2a3e;
  }

  .button,
  .service-card,
  .audience-card,
  .contact-card,
  .nav-links.is-open {
    background: var(--color-surface);
    border-color: var(--color-border);
  }

  .button:hover,
  .button:focus-visible {
    background: var(--color-surface-strong);
    border-color: var(--color-primary);
  }

  .icon-chip {
    background: #263751;
  }

  .about-point {
    background: #1d2a3e;
  }

  .contact-panel {
    background: linear-gradient(135deg, #1d2d4a, #2d3f63);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}