/* ============================================================
   nav.css — Shared navbar styles
   Include on every page that uses <nav id="site-nav">
   ============================================================ */

/* ---- All normal content sits above the grid ---- */
nav, .hero, section, footer, .hero-orb, .section-divider {
  position: relative;
  z-index: 1;
}

/* ---- NAV ---- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 3rem;
  background: rgba(5,8,16,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Orbitron', monospace;
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-decoration: none;
}

.nav-links { display: flex; gap: 2.5rem; list-style: none; align-items: center; }

/* Dropdown menu */
.nav-dropdown {
  position: relative;
}
.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 10px;
  z-index: 1;
}
.nav-dropdown > .nav-drop-trigger {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  font-family: 'Syne', sans-serif;
  padding: 0;
}
.nav-drop-trigger::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.2s, border-color 0.2s;
  margin-top: -2px;
}
.nav-dropdown:hover .nav-drop-trigger,
.nav-dropdown.open .nav-drop-trigger {
  color: var(--accent);
}
.nav-dropdown:hover .nav-drop-trigger::after,
.nav-dropdown.open .nav-drop-trigger::after {
  transform: rotate(-135deg);
  border-color: var(--accent);
}
.nav-drop-menu {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: rgba(10,14,26,0.97);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
  box-shadow: 0 12px 30px rgba(0,0,0,0.5);
  z-index: 200;
}
.nav-drop-menu::after {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}
.nav-drop-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--border);
}
.nav-dropdown:hover .nav-drop-menu,
.nav-dropdown.open .nav-drop-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-drop-menu a {
  display: block;
  padding: 0.55rem 1.2rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: none;
  transition: all 0.15s;
  border-left: 2px solid transparent;
}
.nav-drop-menu a:hover {
  color: var(--accent);
  background: rgba(0,212,255,0.05);
  border-left-color: var(--accent);
}

/* Hamburger button — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* Nav auth area */
.nav-auth {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-left: 1.5rem;
}
.nav-auth-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: 'Syne', sans-serif;
}
.nav-auth-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.15);
}
.nav-user-name {
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
}
.nav-user-credits {
  color: var(--muted);
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
}
.nav-logout-btn {
  border-color: rgba(255, 51, 102, 0.4);
  color: #ff3366;
}
.nav-logout-btn:hover {
  background: rgba(255, 51, 102, 0.1);
}
a.nav-active {
  color: var(--accent) !important;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  nav {
    padding: 1rem 1.5rem;
    position: fixed;
    flex-wrap: wrap;
  }

  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    background: rgba(5,8,16,0.97);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border);
    padding: 0.5rem 0 1rem;
    order: 3;
  }

  .nav-links a {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
    display: block;
    border-left: 2px solid transparent;
  }

  .nav-links a:hover {
    border-left-color: var(--accent);
    background: rgba(0,212,255,0.05);
    padding-left: calc(1.5rem + 2px);
  }

  .nav-dropdown {
    width: 100%;
  }
  .nav-drop-trigger {
    padding: 0.7rem 1.5rem !important;
    font-size: 0.9rem;
    width: 100%;
    justify-content: space-between;
    border-left: 2px solid transparent;
  }
  .nav-drop-trigger:hover {
    border-left-color: var(--accent);
    background: rgba(0,212,255,0.05);
    padding-left: calc(1.5rem + 2px) !important;
  }
  .nav-drop-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    background: rgba(0,0,0,0.2);
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    display: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-drop-menu::before { display: none; }
  .nav-dropdown.open .nav-drop-menu {
    display: block;
    max-height: 300px;
  }
  .nav-dropdown.open .nav-drop-trigger::after {
    transform: rotate(-135deg);
    border-color: var(--accent);
  }
  .nav-drop-menu a {
    padding-left: 2.5rem;
    font-size: 0.85rem;
  }

  nav.nav-open .nav-links { display: flex; }

  nav.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  nav.nav-open .nav-toggle span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  nav.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-auth {
    width: 100%;
    margin: 0.5rem 0 0;
    padding: 0.5rem 1.5rem;
    border-top: 1px solid var(--border);
    order: 2;
  }
}