/* ─── Site Header / Nav ─── */

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
    background: var(--color-forest-black);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.nav-inner {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    width: 100%;
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
    text-decoration: none;
}

.nav-logo__mark {
    display: block;
    width: auto;
    height: 50px;
    flex-shrink: 0;
}

.nav-logo__wordmark {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--color-white);
}

/* Nav links */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin-left: var(--space-6);
}

.nav-links a {
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    color: var(--color-sage);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* CTAs */
.nav-ctas {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-left: auto;
}

/* Hamburger (mobile) */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    margin-left: auto;
}

.nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Mobile drawer */
.nav-drawer {
    display: none;
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
}

.nav-drawer__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 30, 43, 0.85);
}

.nav-drawer__panel {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    background: var(--color-forest-black);
    padding: var(--space-12) var(--space-6) var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.nav-drawer.open .nav-drawer__panel {
    transform: translateX(0);
}

.nav-drawer.open { display: block; }

.nav-drawer__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.nav-drawer__close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: none;
    border: none;
    color: var(--color-sage);
    font-size: var(--text-xl);
    line-height: 1;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast);
}
.nav-drawer__close:hover { color: var(--color-white); }

.nav-drawer__links a {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--text-lg);
    color: var(--color-sage);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-drawer__links a:hover { color: var(--color-white); }

/* Hamburger → X animation when drawer is open */
.nav-hamburger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-hamburger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.nav-hamburger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .nav-inner { gap: var(--space-4); }
    .nav-links { display: none; }
    .nav-ctas  { display: none; }
    .nav-hamburger { display: flex; }
}

@media (max-width: 480px) {
    .nav-logo__mark { height: 36px; }
    .nav-logo__wordmark { font-size: var(--text-base); }
}

/* ─── Site Footer ─── */

.site-footer {
    background: var(--color-forest-black);
    color: var(--color-sage);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-inner {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand .nav-logo__wordmark {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    display: block;
}

.footer-tagline {
    font-size: var(--text-sm);
    line-height: 1.6;
    max-width: 280px;
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: var(--space-2); }
.footer-col ul a {
    font-size: var(--text-sm);
    color: var(--color-sage);
    transition: color var(--transition-fast);
}
.footer-col ul a:hover { color: var(--color-white); }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255,255,255,0.08);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-sage);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
    .footer-brand { grid-column: 1 / -1; }
    .footer-bottom { flex-direction: column; gap: var(--space-3); }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}