*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --black: #0d0d0d;
    --white: #ffffff;
    --navy: #0b0f1a;
    --navy-light: #141929;
    --navy-border: #1e2640;
    --gray-400: #8892aa;
    --gray-600: #a0aac0;
    --gray-800: #c8d0e0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--white);
    background: var(--navy);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ── Navigation ── */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 3rem;
    background: none;
    border-bottom: none;
}

.nav-logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
}

.nav-logo-img {
    height: 58px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    margin-left: auto;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--white);
    transition: color 0.2s;
}

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

.lang-toggle {
    background: none;
    border: 1px solid var(--white);
    color: var(--white);
    font-family: inherit;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.3rem 0.65rem;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    margin-left: 1.5rem;
}

.lang-toggle:hover {
    color: var(--white);
    border-color: var(--gray-600);
}

/* ── Main content ── */

main {
    flex: 1;
    padding-top: 5rem;
}

/* ── Home ── */

.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: calc(100vh - 5rem);
    padding: 4rem 3rem;
    max-width: 900px;
}

.hero-label {
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 2rem;
}

.hero-title {
    font-size: clamp(3.5rem, 10vw, 8rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 2rem;
}

.hero-tagline {
    font-size: 1.05rem;
    color: var(--gray-600);
    max-width: 420px;
    line-height: 1.7;
}

/* ── Glacier background ── */

body.has-glacier-bg {
    background-image: url('images/ok_glacier_etching.jpg');
    background-size: cover;
    background-attachment: fixed;
}

body.has-glacier-bg::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(11, 15, 26, 0.55);
    z-index: 0;
    pointer-events: none;
}

body.has-glacier-bg > * {
    position: relative;
    z-index: 1;
}

body.glacier-left         { background-position: 1% center; }
body.glacier-center-left  { background-position: 25% center; }
body.glacier-center-right { background-position: 75% center; }
body.glacier-right        { background-position: 98% center; }

@keyframes glacier-slide-right {
    from { background-position: 1% center; }
    to   { background-position: 98% center; }
}

body.glacier-slide {
    animation: glacier-slide-right 30s linear infinite alternate;
}

.home-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-hero-logo img {
    width: min(520px, 70vw);
    height: auto;
    display: block;
}

nav.nav-no-logo {
    justify-content: flex-end;
}

/* ── Page header ── */

.page-header {
    padding: 4rem 3rem 3rem;
    text-align: center;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ── Projects ── */

.projects-grid {
    padding: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.project-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 3rem 0;
    max-width: 960px;
}

.project-thumbnail {
    background: var(--navy-light);
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid var(--navy-border);
}

.project-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.project-meta {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.project-title {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: -0.01em;
    line-height: 1.15;
}

.project-description {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.75;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.tag {
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-600);
    border: 1px solid var(--navy-border);
    padding: 0.3rem 0.7rem;
}

/* ── Series details ── */

.series-details {
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.series-detail-item {
    font-size: 0.9rem;
    color: var(--gray-400);
    line-height: 1.7;
    letter-spacing: 0.01em;
    text-align: center;
}

.subtitle-note {
    font-size: 0.75rem;
    opacity: 0.6;
    margin-top: 1rem;
    font-style: italic;
}

/* ── Photography Gallery ── */

.gallery-section {
    padding: 2rem 3rem 5rem;
    max-width: 850px;
    margin: 0 auto;
}

.gallery-title {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-400);
    letter-spacing: 0.02em;
    margin-bottom: 2rem;
    text-align: center;
}

.slideshow {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.slide-image-wrap {
    flex: 1;
    display: flex;
    justify-content: center;
}

.slide-image-wrap img {
    width: 100%;
    max-height: 70vh;
    object-fit: cover;
    display: block;
}

.slide-arrow {
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.2s;
    flex-shrink: 0;
}

.slide-arrow:hover {
    color: white;
}

.slide-counter {
    text-align: center;
    color: var(--gray-400);
    font-size: 0.8rem;
    margin-top: 1rem;
}

.series-highlight {
    color: var(--gray-800);
}

/* ── Vimeo Player ── */

.vimeo-player {
    width: 100%;
    max-width: 900px;
    margin: 3rem auto 4rem;
    padding: 0 2rem;
}

/* ── Episodes ── */

.episodes {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
    padding: 4rem 3rem;
}

.episode-card {
    width: 100%;
    max-width: 960px;
}

.episode-frame {
    width: 100%;
    overflow: hidden;
}

.episode-frame video {
    width: 100%;
    display: block;
}

.episode-label {
    margin-top: 1rem;
}

.episode-number {
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.episode-title {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-top: 0.35rem;
}

/* ── About ── */

.about-section {
    padding: 4rem 3rem;
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

/* ── Contact ── */

.contact-section {
    padding: 4rem 3rem;
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 3rem;
    line-height: 1.7;
}

.contact-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 1.25rem 0;
}

.contact-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.contact-value {
    font-size: 0.95rem;
}

.contact-value a {
    transition: color 0.2s;
}

.contact-value a:hover {
    color: var(--gray-600);
}

/* ── Footer ── */

footer {
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--gray-400);
    letter-spacing: 0.04em;
}

/* ── Responsive ── */

@media (max-width: 768px) {
    nav {
        padding: 1.25rem 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .hero {
        padding: 3rem 1.5rem;
    }

    .page-header {
        padding: 3rem 1.5rem 2rem;
    }

    .projects-grid {
        padding: 2rem 1.5rem;
    }

    .project-card {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-section {
        padding: 3rem 1.5rem;
    }

    footer {
        padding: 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}