.mobile-nav-toggle,
.mobile-nav-overlay {
  display: none;
}

.mobile-nav-toggle,
.mobile-nav-overlay,
.mobile-nav-overlay * {
  box-sizing: border-box;
}

html.mobile-menu-open,
body.mobile-menu-open {
  overflow: hidden;
  overscroll-behavior: none;
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .mobile-nav-toggle {
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    margin: -3px -3px -3px 0;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.035);
    color: rgba(255, 255, 255, 0.88);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background 200ms ease, border-color 200ms ease, color 200ms ease;
  }

  .mobile-nav-toggle:hover,
  .mobile-nav-toggle:focus-visible {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.065);
    color: #fff;
  }

  .mobile-nav-toggle:focus-visible {
    outline: 1px solid rgba(125, 211, 252, 0.55);
    outline-offset: 3px;
  }

  .mobile-nav-toggle-icon {
    position: relative;
    display: block;
    width: 20px;
    height: 15px;
  }

  .mobile-nav-toggle-line {
    position: absolute;
    left: 0;
    width: 20px;
    height: 1.5px;
    border-radius: 999px;
    background: currentColor;
    transform-origin: center;
    transition: top 200ms ease, transform 200ms ease, opacity 160ms ease;
  }

  .mobile-nav-toggle-line:nth-child(1) { top: 0; }
  .mobile-nav-toggle-line:nth-child(2) { top: 6.75px; }
  .mobile-nav-toggle-line:nth-child(3) { top: 13.5px; }

  .mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle-line:nth-child(1) {
    top: 6.75px;
    transform: rotate(45deg);
  }

  .mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle-line:nth-child(3) {
    top: 6.75px;
    transform: rotate(-45deg);
  }

  .mobile-nav-overlay {
    --mobile-nav-top: 86px;
    position: fixed;
    inset: 0;
    z-index: 45;
    display: block;
    padding:
      var(--mobile-nav-top)
      max(12px, env(safe-area-inset-right))
      max(12px, env(safe-area-inset-bottom))
      max(12px, env(safe-area-inset-left));
    background: rgba(3, 5, 10, 0.58);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 220ms ease, visibility 220ms ease;
  }

  .mobile-nav-overlay[hidden] {
    display: none;
  }

  .mobile-nav-overlay.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .mobile-nav-panel {
    width: min(100%, 720px);
    height: 100%;
    margin-left: auto;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: clamp(26px, 7vw, 46px);
    border: 1px solid rgba(255, 255, 255, 0.095);
    border-radius: 24px;
    background:
      radial-gradient(circle at 100% 0%, rgba(251, 113, 133, 0.08), transparent 36%),
      radial-gradient(circle at 0% 100%, rgba(56, 189, 248, 0.07), transparent 38%),
      rgba(7, 9, 15, 0.94);
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.44);
    transform: translateY(-10px);
    opacity: 0;
    transition: transform 220ms ease, opacity 200ms ease;
    scrollbar-width: thin;
  }

  .mobile-nav-overlay.is-open .mobile-nav-panel {
    transform: translateY(0);
    opacity: 1;
  }

  .mobile-nav-content {
    display: grid;
    gap: 4px;
  }

  .mobile-nav-link,
  .mobile-nav-group-title {
    display: flex;
    align-items: center;
    min-height: 54px;
    padding: 11px 2px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: clamp(24px, 7vw, 34px);
    line-height: 1.08;
    font-weight: 800;
    letter-spacing: -0.045em;
    transition: color 180ms ease, background 180ms ease, transform 180ms ease;
  }

  .mobile-nav-link:hover,
  .mobile-nav-link:focus-visible,
  .mobile-nav-group-title:hover,
  .mobile-nav-group-title:focus-visible {
    background: rgba(255, 255, 255, 0.045);
    color: #fff;
    transform: translateX(3px);
  }

  .mobile-nav-link:focus-visible,
  .mobile-nav-group-title:focus-visible,
  .mobile-nav-submenu a:focus-visible {
    outline: 1px solid rgba(125, 211, 252, 0.48);
    outline-offset: 3px;
  }

  .mobile-nav-link--iso {
    color: rgba(125, 211, 252, 0.92);
  }

  .mobile-nav-group-title {
    color: rgba(251, 113, 133, 0.94);
  }

  .mobile-nav-group {
    padding-bottom: 9px;
  }

  .mobile-nav-submenu {
    display: grid;
    gap: 2px;
    margin: 0 0 8px 13px;
    padding: 2px 0 3px 18px;
    border-left: 1px solid rgba(251, 113, 133, 0.28);
  }

  .mobile-nav-submenu a {
    display: flex;
    align-items: center;
    min-height: 43px;
    padding: 8px 10px;
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.62);
    text-decoration: none;
    font-size: clamp(16px, 4.6vw, 20px);
    line-height: 1.25;
    font-weight: 650;
    letter-spacing: -0.02em;
    transition: color 180ms ease, background 180ms ease;
  }

  .mobile-nav-submenu a:hover,
  .mobile-nav-submenu a:focus-visible {
    background: rgba(251, 113, 133, 0.055);
    color: rgba(255, 255, 255, 0.92);
  }

  .mobile-nav-link--contact {
    width: fit-content;
    min-height: 48px;
    margin-top: 14px;
    padding: 12px 18px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.92);
    color: #06070a;
    font-size: 18px;
    letter-spacing: -0.025em;
  }

  .mobile-nav-link--contact:hover,
  .mobile-nav-link--contact:focus-visible {
    background: #fff;
    color: #06070a;
  }
}

@media (max-width: 360px) {
  .mobile-nav-panel {
    padding: 22px 20px;
    border-radius: 20px;
  }

  .mobile-nav-link,
  .mobile-nav-group-title {
    min-height: 49px;
    font-size: 23px;
  }

  .mobile-nav-submenu a {
    min-height: 40px;
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav-toggle,
  .mobile-nav-toggle-line,
  .mobile-nav-overlay,
  .mobile-nav-panel,
  .mobile-nav-link,
  .mobile-nav-group-title,
  .mobile-nav-submenu a {
    transition-duration: 0.01ms !important;
  }
}