/* CyberAI Academy — responsive header / hamburger nav
   Works with auto-enhance from responsive-nav.js
   Breakpoint: 900px. Does not touch pouch FAB (z-index 99990). */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-width: 44px;
  min-height: 44px;
  padding: 0.45rem 0.85rem;
  margin: 0 0.35rem 0 auto;
  border: 1px solid rgba(0, 229, 255, 0.55);
  border-radius: 12px;
  background: rgba(30, 144, 255, 0.35);
  color: #e8f7ff !important;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
  line-height: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55);
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: rgba(0, 229, 255, 0.28);
  outline: 2px solid #00E5FF;
  outline-offset: 2px;
}
.nav-toggle-icon {
  font-size: 1.25rem;
  line-height: 1;
  speak: never;
}
.nav-toggle-label {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

/* Soft lock for sticky header layout when enhanced */
header.cyber-nav-ready {
  position: sticky;
  top: 0;
  z-index: 1000;
  flex-wrap: nowrap;
  gap: 0.5rem;
  align-items: center;
}
header.cyber-nav-ready .logo {
  flex-shrink: 1;
  min-width: 0;
  max-width: min(48vw, 12rem);
  line-height: 1.15;
  font-size: clamp(1.05rem, 4.2vw, 1.8rem);
}
header.cyber-nav-ready .lang-btn {
  flex-shrink: 0;
  margin-left: 0;
}

/* —— Mobile / tablet —— */
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  header.cyber-nav-ready {
    flex-wrap: nowrap !important;
    padding: 0.75rem 1rem !important;
  }

  /* Hide inline nav; open state becomes a panel under the bar */
  header.cyber-nav-ready > nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    margin: 0;
    padding: 0.5rem 0.75rem 0.85rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    background: rgba(2, 10, 22, 0.96);
    border-bottom: 1px solid #00E5FF;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(12px);
    max-height: min(75vh, 32rem);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 1001;
  }

  header.cyber-nav-ready.nav-open > nav {
    display: flex !important;
  }

  header.cyber-nav-ready > nav a {
    display: flex !important;
    align-items: center;
    min-height: 44px;
    margin: 0 !important;
    padding: 0.65rem 0.9rem !important;
    font-size: 1.05rem !important;
    line-height: 1.35;
    border-radius: 10px;
    color: #e8f7ff !important;
    text-decoration: none;
    white-space: normal;
  }
  header.cyber-nav-ready > nav a:hover,
  header.cyber-nav-ready > nav a:focus-visible {
    background: rgba(0, 229, 255, 0.14);
    color: #00E5FF !important;
  }

  /* Optional dim overlay behind menu (created by JS) */
  .nav-scrim {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(0, 0, 0, 0.45);
    border: 0;
    padding: 0;
    cursor: pointer;
  }
  .nav-scrim[hidden] { display: none !important; }
  body.cyber-nav-open .nav-scrim:not([hidden]) {
    display: block;
  }
}

/* —— Desktop —— */
@media (min-width: 901px) {
  .nav-toggle {
    display: none !important;
  }
  .nav-scrim {
    display: none !important;
  }
  header.cyber-nav-ready > nav {
    display: flex !important;
    position: static !important;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    flex: 1 1 auto;
    gap: 0.15rem 0;
    max-height: none;
    overflow: visible;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
  }
  header.cyber-nav-ready > nav a {
    min-height: 0;
    padding: 0.25rem 0;
  }
}

/* Index hero CTAs: stack full-width on narrow phones */
@media (max-width: 600px) {
  .hero-ctas {
    flex-direction: column !important;
    align-items: stretch !important;
    width: min(94vw, 420px) !important;
    gap: 0.65rem !important;
  }
  .hero-ctas .btn {
    width: 100% !important;
    text-align: center;
    box-sizing: border-box;
  }
}