/* --- Navigation --- */
nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: var(--max-width);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  border-radius: 18px;
  background: var(--nav-bg);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  border: 1px solid rgba(255, 107, 53, 0.1);
  transition: all 0.3s ease;
}

nav.nav-scrolled {
  background: var(--nav-bg-scrolled);
  border-color: rgba(255, 107, 53, 0.18);
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.06);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--slate-900);
  text-decoration: none;
}

.logo img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  gap: 32px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-500);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--cinnabar);
  color: #fff;
  padding: 9px 22px;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 700;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
}

/* --- Hamburger Menu --- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--slate-800);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--slate-800);
  transition: color 0.2s;
}
.mobile-nav a:hover { color: var(--cinnabar); }