/* Active Neuron Academy: shared utilities */

/**
 * Brand voice (keep in sync with shell.js + index hero):
 * Tagline: Research-trained, production-ready.
 */

.brand-tagline {
  font-family: Space Grotesk, system-ui, sans-serif;
  font-size: 0.6875rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: #9ad1c5;
}

.brand-rule {
  height: 2px;
  width: 3rem;
  background: linear-gradient(90deg, #9ad1c5, #659b8f);
}

.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 300, "GRAD" 0, "opsz" 24;
}

.grain-overlay {
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.arch-gradient {
  background: linear-gradient(135deg, #9ad1c5 0%, #659b8f 100%);
}

.primary-gradient {
  background: linear-gradient(135deg, #9ad1c5 0%, #659b8f 100%);
}

/* Solid fallback when background-clip:text is unsupported (avoids invisible/overlapping text on some mobile WebKit). */
.text-gradient {
  color: #9ad1c5;
  background: linear-gradient(90deg, #9ad1c5, #b5cbc5);
  -webkit-background-clip: text;
  background-clip: text;
}

@supports (-webkit-background-clip: text) or (background-clip: text) {
  .text-gradient {
    color: transparent;
  }
}

/* Narrow viewports: skip gradient clip — some mobile WebKit builds clip wrong and text stacks or vanishes. */
@media (max-width: 640px) {
  .text-gradient {
    color: #9ad1c5;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
  }
}

.glass-panel {
  backdrop-filter: blur(20px);
  background: rgba(51, 53, 52, 0.45);
}

.glass-card {
  backdrop-filter: blur(16px);
  background: rgba(30, 32, 31, 0.55);
}

/* iOS Safari: backdrop-filter + text often composites as overlapping/ghosted lines; use solid panel on narrow screens. */
@media (max-width: 639px) {
  .glass-card {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgb(30 32 31);
  }
}

/* Icon+text rows: stack on small screens so nothing can sit on the same line as the icon (fixes overlap bugs). */
.list-row-icon {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .list-row-icon {
    flex-direction: row;
    gap: 0.75rem;
    align-items: flex-start;
  }
}

/* Skip link: slight radius for focus visibility (a11y) */
#skip-link:focus {
  border-radius: 2px;
}

/*
 * Mobile menu — styles MUST live here (plain CSS).
 * Tailwind CDN does not generate utilities for class names that only exist in JS-injected HTML,
 * so bg-*, borders, etc. on #site-mobile-menu were never applied → transparent “ghost” menu on iOS.
 */
#site-mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 30;
  padding-top: 4rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  background-color: #121413 !important;
  isolation: isolate;
}

.site-mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #121413;
  min-height: 100%;
  min-height: 100dvh;
  pointer-events: none;
}

.site-mobile-menu__inner {
  position: relative;
  z-index: 1;
  max-width: 32rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
  padding-bottom: 3rem;
}

.site-mobile-menu__panel {
  background-color: #282a29 !important;
  border: 1px solid rgba(64, 73, 70, 0.45);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.site-mobile-menu__link {
  display: block;
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #e2e3e0 !important;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(64, 73, 70, 0.45);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.site-mobile-menu__link:hover,
.site-mobile-menu__link:focus-visible {
  background-color: #1e201f;
  color: #9ad1c5 !important;
  outline: none;
}

.site-mobile-menu__foot {
  margin: 0;
  padding: 1.5rem 1.25rem;
  text-align: center;
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(154, 209, 197, 0.95);
  background-color: #0d0f0e;
  border-top: 1px solid rgba(64, 73, 70, 0.35);
}

#site-mobile-menu[aria-hidden="true"] {
  display: none !important;
  visibility: hidden;
  pointer-events: none;
}

#site-mobile-menu[aria-hidden="false"] {
  display: block !important;
  visibility: visible;
}

@media (min-width: 768px) {
  #site-mobile-menu {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }
}

@media (max-width: 767.98px) {
  .site-nav-desktop {
    display: none !important;
  }
}