/* ── Navigation ── */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    transition: background-color var(--duration-normal) var(--ease-smooth),
                backdrop-filter var(--duration-normal);
}

.site-nav.is-scrolled {
    background-color: var(--overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.site-nav__inner {
    max-width: var(--max-width-wide);
    margin-inline: auto;
    padding-inline: var(--gutter);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-nav__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    z-index: 101;
}

.site-nav__logo-img {
    width: 94px;
    height: 94px;
    border-radius: 50%;
    object-fit: cover;
}

.site-nav__logo-text {
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: 800;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--accent);
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.site-nav__link {
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--text-secondary);
    position: relative;
    padding: 0.25rem 0;
    transition: color var(--duration-fast);
}

.site-nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width var(--duration-normal) var(--ease-out);
}

.site-nav__link:hover,
.site-nav__link.is-active {
    color: var(--text);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
    width: 100%;
}

.site-nav__theme {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: color var(--duration-fast);
    position: relative;
}

.site-nav__theme:hover {
    color: var(--accent);
}

.theme-icon--sun { display: block; }
.theme-icon--moon { display: none; }
[data-theme="light"] .theme-icon--sun { display: none; }
[data-theme="light"] .theme-icon--moon { display: block; }

.site-nav__burger {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    z-index: 101;
}

.site-nav__burger span {
    display: block;
    width: 24px;
    height: 1.5px;
    background: var(--text);
    transition: transform var(--duration-normal) var(--ease-out),
                opacity var(--duration-fast);
}

.site-nav__burger.is-active span:first-child {
    transform: translateY(3.75px) rotate(45deg);
}

.site-nav__burger.is-active span:last-child {
    transform: translateY(-3.75px) rotate(-45deg);
}

/* ── Mobile Menu ── */

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 99;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2xl) var(--gutter);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-slow) var(--ease-out),
                visibility var(--duration-slow);
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.mobile-menu__link {
    font-family: var(--font-sans);
    font-size: var(--fs-3xl);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: var(--ls-tight);
    line-height: var(--lh-tight);
    transition: color var(--duration-fast);
}

.mobile-menu__link:hover {
    color: var(--accent);
}

.mobile-menu__theme {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    transition: color var(--duration-fast);
}

.mobile-menu__theme:hover {
    color: var(--accent);
}

.mobile-menu__footer {
    margin-top: auto;
    padding-top: var(--space-xl);
}

.mobile-menu__email {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    transition: color var(--duration-fast);
}

.mobile-menu__email:hover {
    color: var(--accent);
}

.mobile-menu__location {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    margin-top: var(--space-xs);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
}

/* ── Footer ── */

.site-footer {
    border-top: 1px solid var(--border);
    padding-block: var(--space-2xl);
}

.site-footer__inner {
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--gutter);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-xl);
    align-items: start;
}

.site-footer__brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.site-footer__logo-img {
    border-radius: 50%;
    width: 141px;
    height: 141px;
    object-fit: cover;
}

.site-footer__tagline {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: var(--fs-md);
    color: var(--text-secondary);
}

.site-footer__location {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
}

.site-footer__nav {
    display: flex;
    gap: var(--space-lg);
    padding-top: 0.5rem;
}

.site-footer__link {
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: color var(--duration-fast);
}

.site-footer__link:hover {
    color: var(--accent);
}

.site-footer__bottom {
    grid-column: 1 / -1;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.site-footer__copy {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
}

.site-footer__credit {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
}

.site-footer__credit-link {
    color: var(--text-secondary);
    transition: color var(--duration-fast);
}

.site-footer__credit-link:hover {
    color: var(--accent);
}

/* ── Buttons ── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-sans);
    font-size: var(--fs-sm);
    font-weight: 600;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    padding: 1rem 2rem;
    border: 1px solid var(--border);
    transition: all var(--duration-normal) var(--ease-out);
    cursor: pointer;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn--primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #FFFFFF;
}

.btn--primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #FFFFFF;
}

.btn--ghost {
    background: transparent;
    border-color: var(--text);
    color: var(--text);
}

.btn--ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn__arrow {
    transition: transform var(--duration-normal) var(--ease-out);
}

.btn:hover .btn__arrow {
    transform: translateX(4px);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--fs-sm);
    font-weight: 600;
    letter-spacing: var(--ls-wide);
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: color var(--duration-fast);
}

.link-arrow:hover {
    color: var(--accent);
}

.link-arrow span {
    transition: transform var(--duration-normal) var(--ease-out);
}

.link-arrow:hover span {
    transform: translateX(4px);
}

/* ── Form ── */

.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 0;
    font-size: var(--fs-base);
    color: var(--text);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--duration-fast);
    appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23666' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 1.5rem;
}

.form-error {
    font-size: var(--fs-xs);
    color: #E53E3E;
    margin-top: 0.25rem;
}

.form-message {
    padding: var(--space-md);
    font-size: var(--fs-sm);
    border: 1px solid;
}

.form-message--success {
    border-color: #38A169;
    color: #38A169;
    background: rgba(56, 161, 105, 0.05);
}

.form-message--error {
    border-color: #E53E3E;
    color: #E53E3E;
    background: rgba(229, 62, 62, 0.05);
}

.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
}

/* ── Project Detail ── */

.project-hero {
    padding-top: calc(var(--nav-height) + var(--space-xl));
    padding-bottom: var(--space-lg);
}

.project-hero__title {
    font-family: var(--font-sans);
    font-size: var(--fs-2xl);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: var(--ls-tight);
    line-height: var(--lh-tight);
    margin-bottom: var(--space-md);
}

.project-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}

.project-hero__tag {
    font-size: var(--fs-xs);
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--text-secondary);
}

.project-hero__tag::after {
    content: '/';
    margin-left: var(--space-sm);
    color: var(--border-strong);
}

.project-hero__tag:last-child::after {
    display: none;
}

.project-video {
    margin-bottom: var(--space-section);
}

.project-credits {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-lg);
    padding-block: var(--space-xl);
    border-top: 1px solid var(--border);
}

.project-credit {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.project-credit__label {
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--text-muted);
}

.project-credit__value {
    font-size: var(--fs-base);
    color: var(--text);
}

.project-description {
    max-width: 700px;
    padding-block: var(--space-xl);
    border-top: 1px solid var(--border);
}

.project-description p {
    font-size: var(--fs-md);
    line-height: var(--lh-relaxed);
    color: var(--text-secondary);
}

.project-next {
    border-top: 1px solid var(--border);
    padding-block: var(--space-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-md);
}

.project-next__label {
    font-size: var(--fs-xs);
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--text-muted);
}

.project-next__title {
    font-size: var(--fs-2xl);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: var(--ls-tight);
    transition: color var(--duration-fast);
}

.project-next__title:hover {
    color: var(--accent);
}

/* ── About Page ── */

.about-hero {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    padding-bottom: var(--space-2xl);
}

.about-statement {
    font-family: var(--font-serif);
    font-size: var(--fs-2xl);
    font-style: italic;
    line-height: var(--lh-snug);
    color: var(--text-secondary);
    max-width: 800px;
}

.about-section {
    padding-block: var(--space-section);
    border-top: 1px solid var(--border);
}

.about-section__heading {
    font-family: var(--font-sans);
    font-size: var(--fs-3xl);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: var(--ls-tight);
    line-height: var(--lh-tight);
    margin-bottom: var(--space-lg);
}

.about-services {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-sm);
}

.about-service {
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text-secondary);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border);
    transition: color var(--duration-fast);
}

.about-service:hover {
    color: var(--accent);
}

.about-manifesto {
    font-size: var(--fs-xl);
    line-height: var(--lh-relaxed);
    color: var(--text-secondary);
    max-width: 700px;
}

.about-manifesto strong {
    color: var(--text);
    font-weight: 600;
}

/* ── Contact Page ── */

.contact-hero {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    padding-bottom: var(--space-xl);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-section);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding-top: var(--space-md);
}

.contact-block {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.contact-block__label {
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: var(--ls-wider);
    text-transform: uppercase;
    color: var(--text-muted);
}

.contact-block__value {
    font-size: var(--fs-md);
    font-weight: 500;
    transition: color var(--duration-fast);
}

.contact-block__value a:hover {
    color: var(--accent);
}

.contact-block__note {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: var(--fs-base);
    color: var(--text-secondary);
}

/* ── 404 ── */

.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--gutter);
}

.error-page__inner {
    max-width: 600px;
}

.error-page__code {
    font-size: var(--fs-hero);
    font-weight: 900;
    color: var(--accent);
    line-height: 1;
    margin-bottom: var(--space-md);
}

.error-page__message {
    font-family: var(--font-serif);
    font-size: var(--fs-xl);
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

/* ── Video Modal ── */

.video-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--gutter);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-normal) var(--ease-out),
                visibility var(--duration-normal);
}

.video-modal.is-open {
    opacity: 1;
    visibility: visible;
}

.video-modal__inner {
    position: relative;
    width: 100%;
    max-width: 1100px;
    aspect-ratio: 16 / 9;
}

.video-modal__inner iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.video-modal__close {
    position: absolute;
    top: -48px;
    right: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--duration-fast);
    z-index: 201;
}

.video-modal__close:hover {
    color: var(--accent);
}

/* ── Reveal Animation ── */

.reveal {
    opacity: 0;
    transform: translateY(30px);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}