.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 106;
    padding: 1rem 2rem;
    background: var(--color-navy);
    box-shadow: none;
}

.site-header.scrolled {
    background: rgba(6, 10, 18, 0.85);
    backdrop-filter: blur(12px);
}

.navbar {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.header-phone {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.9;
  white-space: nowrap;
  transition: opacity 0.3s ease;
}
.header-phone:hover {
  opacity: 1;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-white);
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-white);
    opacity: 0.85;
    font-size: 0.95rem;
    transition: opacity 0.3s ease;
}

.nav-links a:hover {
    opacity: 1;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    z-index: 110;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background: var(--color-white);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

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

body.menu-open {
    overflow: hidden;
}
body.menu-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 104;
}

@media (max-width: 900px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-navy);
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 2rem;
        padding: 2rem;
        transition: right 0.4s var(--ease-smooth);
        z-index: 105;
    }
    .nav-links.open {
        right: 0;
    }
    .nav-links a {
        font-size: 1.1rem;
    }
    .header-phone {
        display: none;
    }
    .nav-cta {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
}

.logo img {
    height: 70px;
    width: auto;
    display: block;
}