/* ─── Navigation ─── */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(0px);
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: all 0.4s ease;
}

nav.nav-scrolled {
    backdrop-filter: blur(20px);
    background: rgba(10, 14, 23, 0.85);
    border-bottom-color: var(--border);
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo svg { width: 32px; height: 32px; }

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-cta {
    background: var(--green-light);
    color: var(--bg-dark) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-weight: 600 !important;
    transition: all 0.2s !important;
}

.nav-cta:hover {
    background: #7EC8F5 !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(91, 184, 241, 0.3);
}

/* ─── Mobile Hamburger ─── */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav overlay */
.nav-links.open {
    display: flex !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: rgba(10, 14, 23, 0.97);
    backdrop-filter: blur(20px);
    z-index: 99;
}

.nav-links.open a {
    font-size: 1.2rem;
}