/* ═══════════════════════════════════════════
   NAVBAR.CSS — CyberEduc
   Clean editorial navbar with working mobile menu.
═══════════════════════════════════════════ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

/* ─── Logo ─── */

.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-logo:hover {
  opacity: 0.8;
}

.logo-icon {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  color: var(--green);
}

.logo-text {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

/* ─── Center links ─── */

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 15px;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a.active {
  color: var(--green);
}

/* ─── Right side (auth) ─── */

.nav-auth {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-auth .btn-ghost,
.nav-auth .btn-primary {
  padding: 10px 20px;
  font-size: 14px;
}

/* ─── User button (logged in) ─── */

.nav-user-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 16px 4px 4px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-user-btn:hover {
  border-color: var(--border-light);
}

.nav-user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--green);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 13px;
}

.nav-user-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 14px;
  color: var(--text);
}

/* ─── Burger button ─── */

.nav-burger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
  z-index: 101;
  position: relative;
  width: 40px;
  height: 40px;
}

.nav-burger::before,
.nav-burger::after,
.nav-burger span {
  content: '';
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--text);
  transition: var(--transition-s);
}

.nav-burger::before { top: 12px; }
.nav-burger span    { top: 19px; }
.nav-burger::after  { top: 26px; }

.nav-burger.open::before {
  top: 19px;
  transform: rotate(45deg);
}

.nav-burger.open span {
  opacity: 0;
}

.nav-burger.open::after {
  top: 19px;
  transform: rotate(-45deg);
}

/* ═══════════════════════════════════════════
   MOBILE
═══════════════════════════════════════════ */

@media (max-width: 900px) {
  .navbar {
    padding: 16px 20px;
  }

  .nav-burger {
    display: block;
  }

  .nav-links,
  .nav-auth {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    gap: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 99;
  }

  .nav-links {
    padding: 24px 20px 0;
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
  }

  .nav-auth {
    top: auto;
    bottom: 0;
    padding: 20px;
    background: var(--bg-2);
    border-top: 1px solid var(--border);
    flex-direction: row;
    gap: 12px;
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
  }

  .nav-links.open,
  .nav-auth.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    width: 100%;
  }

  .nav-auth .btn-ghost,
  .nav-auth .btn-primary {
    flex: 1;
    padding: 14px;
    font-size: 15px;
    justify-content: center;
  }

  .nav-user-btn {
    width: 100%;
    justify-content: flex-start;
  }
}