/**
 * navigation.css — Editorial masthead
 */

.nav-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1100;
    background-color: var(--clr-bg-base);
    border-bottom: 1px solid var(--clr-rule);
    padding-block: 1.1rem;
}

.nav-header.is-scrolled {
    padding-block: 0.85rem;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-inline: var(--container-pad);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.nav-logo {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    color: var(--clr-text-base);
}

.nav-links {
    display: none;
    list-style: none;
    align-items: center;
    gap: 1.75rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link,
.nav-cv {
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--clr-text-muted);
}

.nav-link:hover,
.nav-link.is-active,
.nav-cv:hover {
    color: var(--clr-text-base);
}

.nav-cv {
    color: var(--clr-text-base);
    text-decoration: underline;
    text-underline-offset: 0.22em;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
}

.theme-toggle:hover {
    color: var(--clr-text-base);
}

html:not([data-theme="dark"]) .sun-icon { display: none; }
html:not([data-theme="dark"]) .moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

.nav-mobile-controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

@media (min-width: 768px) {
    .nav-mobile-controls {
        display: none;
    }
}

.nav-hamburger {
    width: 32px;
    height: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-hamburger__bar {
    width: 20px;
    height: 1.5px;
    background-color: var(--clr-text-base);
    margin: 0 auto;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-hamburger[aria-expanded="true"] .nav-hamburger__bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
.nav-hamburger[aria-expanded="true"] .nav-hamburger__bar:nth-child(2) {
    opacity: 0;
}
.nav-hamburger[aria-expanded="true"] .nav-hamburger__bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

.nav-mobile {
    position: fixed;
    top: 57px;
    left: 0;
    width: 100%;
    height: calc(100vh - 57px);
    background-color: var(--clr-bg-base);
    padding: var(--space-8) var(--container-pad);
    display: flex;
    flex-direction: column;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    border-top: 1px solid var(--clr-rule);
}

.nav-mobile.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-mobile__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.nav-mobile__link {
    font-size: var(--text-3xl);
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--clr-text-base);
}