/* ============================================================
   NAV · Landing page navbar + mobile drawer
   Requires: base.css
   Reuse: include on any landing/marketing page
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  background: transparent;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 4px 24px rgba(20, 30, 55, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
.nav-inner {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-decoration: none;
}
.nav-logo .logo-icon-spin {
  height: 44px;
  width: auto;
  animation: logoSpin 8s linear infinite;
  transform-origin: center center;
}
@keyframes logoSpin {
  from { transform: perspective(500px) rotateY(0deg); }
  to   { transform: perspective(500px) rotateY(-360deg); }
}
.nav-logo .brand-name {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.5px;
  line-height: 1;
  background: linear-gradient(90deg, #06e8d8 0%, #13b9d6 42%, #ff0a5e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--slate);
  transition: all 0.18s ease;
}
.nav-links a:hover { color: var(--ink); background: rgba(0, 212, 255, 0.07); }

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

/* hamburger */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  width: 20px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.25s ease;
}

/* mobile drawer */
.drawer-backdrop {
  position: fixed; inset: 0;
  background: rgba(15, 22, 40, 0.4);
  backdrop-filter: blur(2px);
  opacity: 0; visibility: hidden;
  transition: all 0.3s ease;
  z-index: 110;
}
.drawer-backdrop.open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed;
  top: 0; right: 0;
  width: min(86vw, 340px);
  height: 100vh;
  background: #fff;
  z-index: 120;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: -20px 0 60px rgba(20, 30, 55, 0.18);
}
.drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.drawer-head img { height: 48px; }
.drawer-close {
  width: 40px; height: 40px; border: 1px solid var(--line);
  background: #fff; border-radius: 10px; cursor: pointer;
  font-size: 1.2rem; color: var(--slate);
}
.drawer a {
  padding: 13px 14px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--slate);
  transition: all 0.18s;
}
.drawer a:hover { background: var(--bg-soft); color: var(--ink); }
.drawer .drawer-actions { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.drawer .btn { width: 100%; }

@media (max-width: 980px) {
  .nav-links { display: none; }
  .nav-actions .btn-ghost, .nav-actions .btn-primary { display: none; }
  .nav-toggle { display: flex; }
}