/* ============================================================
   Sly Technologies — slytechs.com
   nav.css — Navigation, dropdowns, mega-menu, responsive nav
   ============================================================ */

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  height: 64px;
}

.nav-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text-bright);
  letter-spacing: -0.02em;
}

.nav-logo img {
  height: 32px;
  width: auto;
  object-fit: contain;
}


.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-bright);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s, text-decoration-color 0.2s;
}

.nav-links > li > a:hover {
  color: var(--text-bright);
  text-decoration: underline;
  text-decoration-color: var(--text-bright);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
}

.nav-links a.active,
.nav-links > li.active > a {
  color: var(--color-flow);
  text-decoration: underline;
  text-decoration-color: var(--color-flow);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
}

.nav-links .nav-cta:hover,
.submenu a:hover { text-decoration: none; }

.nav-cta {
  background: var(--accent);
  color: white !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s, transform 0.15s;
}

/* CTA button must never receive active/hover nav link styles */
.nav-cta,
.nav-cta:hover,
.nav-cta:focus,
.nav-cta.active {
  text-decoration: none !important;
  color: white !important;
}

.nav-cta:hover {
  background: var(--accent-dim);
  color: white !important;
  transform: translateY(-1px);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  margin: 4px 0;
  transition: 0.3s;
}

/* --- Accordion Toggle --- */

/* --- Dropdown / Submenu --- */

/* Arrow indicator on top-level items that have a submenu */
.nav-links > li.has-submenu > a::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  margin-left: 6px;
  opacity: 0.6;
  transition: transform 0.2s, opacity 0.2s, border-color 0.2s;
  vertical-align: middle;
}

.nav-links > li.has-submenu > a:hover::after {
  transform: rotate(225deg) translateY(2px);
  opacity: 1;
}

.nav-links > li.has-submenu.active > a::after {
  opacity: 1;
  border-color: var(--color-flow);
}

/* Nested has-submenu arrow points right */
.submenu li.has-submenu > a {
  display: flex;
  justify-content: space-between;
}

.submenu li.has-submenu > a::after {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  margin-left: auto;
  opacity: 0.5;
  flex-shrink: 0;
  transition: opacity 0.2s;
}

/* ── Submenu panel ─────────────────────────────────────────────────────────── */

/* Position context */
.nav-links > li { position: relative; }
.submenu li     { position: relative; }

/* Invisible hover bridge: extends the li's hit-area over the gap
   so moving from the trigger link into the dropdown never loses :hover */
.nav-links > li.has-submenu::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 12px; /* matches margin-top on .submenu */
  background: transparent;
}

/* Same bridge for nested flyouts */
.submenu li.has-submenu::before {
  content: '';
  position: absolute;
  top: 0;
  left: 100%;
  width: 8px;  /* matches margin-left on nested .submenu */
  bottom: 0;
  background: transparent;
}

/* The dropdown panel — background lives directly here, no pseudo trickery */
.submenu {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 12px;      /* visual gap; covered by the ::before bridge above */
  min-width: 220px;
  background: #0f1420;
  border: 1px solid var(--border-default);
  border-radius: 10px;
  padding: 6px;
  list-style: none;
  box-shadow: 0 16px 48px rgba(0,0,0,0.55);
  transform: translateY(-4px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0.18s;
  z-index: 200;
}

/* Caret lip — top-left corner of the main dropdown */
.submenu::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 16px;
  width: 8px;
  height: 8px;
  background: #0f1420;
  border-left: 1px solid var(--border-default);
  border-top: 1px solid var(--border-default);
  transform: rotate(45deg);
  border-radius: 2px 0 0 0;
}

/* Nested flyout — to the right */
.submenu .submenu {
  top: -6px;
  left: 100%;
  margin-top: 0;
  margin-left: 8px;  /* visual gap; covered by ::before bridge */
  transform: translateX(-4px);
}

/* Caret lip — left-center of the nested flyout, points left */
.submenu .submenu::before {
  top: 14px;
  left: -5px;
  right: auto;
  border-left: 1px solid var(--border-default);
  border-top: 1px solid var(--border-default);
  border-right: none;
  border-bottom: none;
  transform: rotate(-45deg);
  border-radius: 2px 0 0 0;
}

/* Links */
.submenu a {
  display: flex;
  align-items: center;
  padding: 9px 14px;
  border-radius: 7px;
  color: var(--text-secondary) !important;
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.submenu a:hover,
.submenu a.active {
  background: var(--bg-elevated);
  color: var(--text-bright) !important;
}

/* Optional separator: <li class="submenu-sep"></li> */
.submenu-sep {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 6px;
  pointer-events: none;
}

/* ── Open states ───────────────────────────────────────────────────────────── */

/* JS-driven open: works on all devices */
.has-submenu.submenu-open > .submenu {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0s;
}

.submenu .has-submenu.submenu-open > .submenu {
  transform: translateX(0);
}

/* All submenu open/close is handled by JS (mouseenter/mouseleave on desktop,
   chevron button on mobile). No CSS :hover rules — eliminates iOS sticky-hover bug. */

/* Arrow rotation for JS-open state (all devices) */
.nav-links > li.has-submenu.submenu-open > a::after {
  transform: rotate(225deg) translateY(2px);
  opacity: 1;
}

/* --- Mega-menu --- */

.nav-links { gap: 4px; }
.nav-links > li > a { padding: 6px 12px; border-radius: 6px; }

.mega-menu {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  top: 64px;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: #0f1420;
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 28px 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  display: grid;
  gap: 0;
  z-index: 300;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0.18s;
}
.mega-menu::before { display: none !important; }
.mega-menu-3col { grid-template-columns: repeat(3, 240px); }
.mega-menu-2col { grid-template-columns: repeat(2, 240px); }
.has-mega { position: static; }
.has-mega.submenu-open > .mega-menu {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0s;
}

.mega-col-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 0 12px 12px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}
.mega-col { padding-right: 24px; }
.mega-col + .mega-col { padding-left: 24px; padding-right: 0; border-left: 1px solid var(--border-subtle); }

.mega-menu a {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 10px 12px;
  border-radius: 8px;
  transition: background 0.15s;
  color: var(--text-secondary) !important;
  margin-top: 2px;
  white-space: normal;
  text-decoration: none !important;
}
.mega-menu a:hover { background: var(--bg-elevated); }
.mega-menu a .mega-link-title { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 3px; line-height: 1.3; }
.mega-menu a:hover .mega-link-title { color: var(--text-bright); }
.mega-menu a.active .mega-link-title { color: var(--color-flow); }
.mega-menu a .mega-link-desc { font-size: 13px; color: var(--text-muted); line-height: 1.4; }

/* External link icon — boxed arrow, superscripted */
.mega-menu a[target="_blank"] .mega-link-title::after {
  content: '↗';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 8px;
  line-height: 1;
  vertical-align: super;
  margin-left: 5px;
  opacity: 0.25;
  font-weight: 400;
}

.submenu-right > .submenu { left: auto; right: 0; min-width: 0; width: auto; }
.submenu-right > .submenu::before { left: auto; right: 16px; }

/* --- Responsive --- */

@media (max-width: 900px) {
  /* Hamburger trigger — matches mega-menu hide breakpoint */
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .mega-menu { display: none !important; }

  .nav.nav-open { background: #0a0e17; backdrop-filter: none; }

  .nav::after {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,14,23,0);
    backdrop-filter: blur(0px);
    z-index: -1;
    pointer-events: none;
    transition: background 0.3s ease, backdrop-filter 0.3s ease;
  }
  .nav.nav-open::after { background: rgba(10,14,23,0.65); backdrop-filter: blur(3px); }

  .nav.nav-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #0a0e17;
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px 24px;
    gap: 4px;
    z-index: 1000;
    box-shadow: 0 16px 32px rgba(0,0,0,0.5);
  }

  .nav.nav-open .nav-links li { width: 100%; }
  .nav.nav-open .nav-links a { display: block; padding: 10px 0; border-bottom: 1px solid var(--border-subtle); text-decoration: none; }
  .nav.nav-open .nav-links li:last-child > a { border-bottom: none; }
  .nav.nav-open .nav-cta { margin-top: 8px; text-align: center; }

  .nav-open .nav-toggle span:nth-child(1) { transform: rotate(45deg) translate(4px,4px); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: rotate(-45deg) translate(4px,-4px); }

  /* Mobile submenus */
  .nav.nav-open .has-submenu::before,
  .nav.nav-open .submenu::before,
  .nav.nav-open .submenu::after { display: none !important; content: none !important; }

  .nav.nav-open .submenu {
    display: block !important;
    position: static !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: none !important;
    padding: 0 0 4px 16px;
    min-width: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    transition: none !important;
  }

  .nav.nav-open .submenu,
  .nav.nav-open .submenu li { list-style: none; padding-left: 0; }
  .nav.nav-open .submenu { padding-left: 16px; }

  .nav.nav-open .submenu a {
    margin: 0;
    padding: 7px 0;
    border-bottom: 1px solid var(--border-subtle);
    border-radius: 0;
    font-size: 13px;
    color: var(--text-muted);
  }
  .nav.nav-open .submenu a.active,
  .nav.nav-open .submenu a:active { color: var(--text-bright) !important; }

  .nav.nav-open .nav-links > li.has-submenu > a::after { display: none; }
  .submenu-chevron { display: none !important; }

  /* Mobile mega-menus: 2-col flat grid */
  .nav.nav-open .mega-menu {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    position: static !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: none !important;
    padding: 4px 0 4px 16px;
    gap: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    transition: none !important;
  }

  /* display:contents removes column box — links flow into the 2-col grid */
  .nav.nav-open .mega-col { display: contents; }
  .nav.nav-open .mega-col-label { display: none; }

  .nav.nav-open .mega-menu a {
    flex-direction: row;
    align-items: center;
    padding: 7px 8px 7px 0;
    border-bottom: 1px solid var(--border-subtle);
    border-radius: 0;
    background: transparent !important;
    margin-top: 0;
    color: var(--text-muted) !important;
    text-decoration: none !important;
  }
  .nav.nav-open .mega-menu a .mega-link-desc { display: none; }
  .nav.nav-open .mega-menu a .mega-link-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .nav.nav-open .mega-menu a.active .mega-link-title { color: var(--color-flow) !important; }
}

/* Very small phones — single column mega */
@media (max-width: 400px) {
  .nav.nav-open .mega-menu { grid-template-columns: 1fr !important; }
}