/* ==========================================================================
   TERRA MALA — Stefano Schirato
   Landing page fotografica — CSS
   ========================================================================== */

:root {
    --color-bg: #0b0b0a;
    --color-bg-alt: #121110;
    --color-text: #f2ede6;
    --color-text-dim: #a89f92;
    --color-text-muted: #756c60;
    --color-accent: #c4552c;
    --color-accent-dim: #7a3a20;
    --color-line: rgba(242, 237, 230, 0.12);

    --font-display: "Fraunces", Georgia, "Times New Roman", serif;
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    --container: 1180px;
    --gutter: clamp(20px, 5vw, 64px);

    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

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

::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}

/* Film grain overlay ------------------------------------------------------ */
.grain {
    position: fixed;
    inset: 0;
    z-index: 500;
    pointer-events: none;
    opacity: 0.05;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Header / nav ------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px var(--gutter);
    mix-blend-mode: difference;
}

.site-header__logo {
    font-family: var(--font-display);
    font-size: 15px;
    letter-spacing: 0.18em;
    font-weight: 500;
    color: var(--color-text);
}

.site-header__menu-btn {
    position: relative;
    z-index: 210;
    width: 36px;
    height: 26px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.site-header__menu-btn span {
    display: block;
    height: 1px;
    width: 100%;
    background: var(--color-text);
    transition: transform 0.4s var(--ease), opacity 0.3s var(--ease);
}

.site-header__menu-btn[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
}
.site-header__menu-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.site-header__menu-btn[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
}

.site-header__nav {
    position: fixed;
    inset: 0;
    z-index: 190;
    /* isola il pannello dal mix-blend-mode: difference dell'header,
       altrimenti si "fonde" col contenuto sottostante e diventa illeggibile */
    isolation: isolate;
    mix-blend-mode: normal;
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0) 45%),
        rgba(11, 11, 10, 0.42);
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    backdrop-filter: blur(28px) saturate(160%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease), visibility 0.5s;
}

/* Se il browser non supporta il backdrop-filter, alziamo l'opacità dello
   sfondo così il pannello resta comunque leggibile (niente "vetro", ma
   nemmeno testo su foto senza contrasto). */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .site-header__nav {
        background:
            linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0) 45%),
            rgba(9, 9, 8, 0.97);
    }
}

.site-header__nav.is-open {
    opacity: 1;
    visibility: visible;
}

.site-header__nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    text-align: center;
}

.site-header__nav li {
    margin: 18px 0;
}

.nav__link {
    font-family: var(--font-display);
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 400;
    color: var(--color-text-dim);
    transition: color 0.3s var(--ease);
}

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

/* Side dot navigation ------------------------------------------------------ */
.dotnav {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 150;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.dotnav__item {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1px solid var(--color-text-dim);
    transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}

.dotnav__item.is-active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.4);
}

@media (max-width: 900px) {
    .dotnav {
        display: none;
    }
}

/* Hero ---------------------------------------------------------------------- */
.hero {
    position: relative;
    height: 100svh;
    min-height: 560px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    background: var(--color-bg);
}

.hero__media {
    position: absolute;
    inset: 0;
}

.hero__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
    transform: scale(1.08);
    animation: heroZoom 12s var(--ease) forwards;
}

@keyframes heroZoom {
    to {
        transform: scale(1);
    }
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(11, 11, 10, 0.35) 0%, rgba(11, 11, 10, 0.35) 40%, rgba(11, 11, 10, 0.92) 92%),
        linear-gradient(90deg, rgba(11, 11, 10, 0.55) 0%, rgba(11, 11, 10, 0.05) 45%);
}

.hero__content {
    position: relative;
    z-index: 2;
    padding: 0 var(--gutter) 90px;
    max-width: 900px;
}

.hero__eyebrow {
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-text-dim);
    margin: 0 0 18px;
    opacity: 0;
    animation: fadeUp 1s var(--ease) 0.3s forwards;
}

.hero__title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(58px, 13vw, 156px);
    line-height: 0.92;
    letter-spacing: -0.01em;
    margin: 0;
    opacity: 0;
    animation: fadeUp 1.1s var(--ease) 0.5s forwards;
}

.hero__tagline {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 300;
    font-size: clamp(18px, 2.4vw, 26px);
    color: var(--color-text-dim);
    margin: 20px 0 0;
    opacity: 0;
    animation: fadeUp 1s var(--ease) 0.8s forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__scroll {
    position: absolute;
    right: var(--gutter);
    bottom: 36px;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-text-dim);
    opacity: 0;
    animation: fadeUp 1s var(--ease) 1.1s forwards;
}

.hero__scroll span {
    width: 1px;
    height: 34px;
    background: var(--color-text-dim);
    position: relative;
    overflow: hidden;
}

.hero__scroll span::after {
    content: "";
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-accent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { top: -100%; }
    60% { top: 100%; }
    100% { top: 100%; }
}

@media (max-width: 640px) {
    .hero__scroll { display: none; }
}

/* Section label -------------------------------------------------------------- */
.section-label {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 18px;
}

/* About / intro --------------------------------------------------------------- */
.about {
    padding: clamp(90px, 16vw, 180px) var(--gutter);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
}

.about__inner {
    max-width: 760px;
    margin: 0 auto;
    text-align: left;
}

.about__title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(34px, 5vw, 56px);
    margin: 0 0 34px;
    line-height: 1.1;
}

.about__text {
    font-size: clamp(16px, 1.6vw, 19px);
    color: var(--color-text-dim);
    max-width: 640px;
    margin: 0 0 20px;
}

.about__text--muted {
    font-size: 14px;
    color: var(--color-text-muted);
    border-left: 2px solid var(--color-accent-dim);
    padding-left: 18px;
    margin-top: 34px;
}

.about__exhibit {
    font-size: 15px;
    font-style: italic;
    color: var(--color-text-dim);
    margin-top: 28px;
}

.about__exhibit em {
    font-style: italic;
}

.about__cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    padding: 14px 26px;
    border: 1px solid var(--color-accent);
    color: var(--color-text);
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease);
}

.about__cta:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.about__cta-arrow {
    transition: transform 0.35s var(--ease);
}

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

/* Chapters --------------------------------------------------------------------- */
.chapter {
    position: relative;
    padding: clamp(70px, 12vw, 140px) 0 40px;
    border-bottom: 1px solid var(--color-line);
}

.chapter:nth-of-type(even) {
    background: var(--color-bg-alt);
}

.chapter__header {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter) clamp(50px, 9vw, 110px);
}

.chapter__num {
    font-family: var(--font-display);
    font-size: 15px;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

.chapter__title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(38px, 7vw, 84px);
    margin: 10px 0 6px;
    line-height: 1.02;
}

.chapter__subtitle {
    font-size: 14px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin: 0 0 30px;
}

.chapter__intro {
    max-width: 620px;
    font-size: clamp(16px, 1.5vw, 18px);
    color: var(--color-text-dim);
    margin: 0;
}

.chapter__photos {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    flex-direction: column;
    gap: clamp(60px, 10vw, 120px);
}

/* Photo block ------------------------------------------------------------------- */
.photo-block {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: clamp(28px, 5vw, 70px);
    align-items: center;
}

.photo-block--reverse {
    grid-template-columns: 1fr 1.35fr;
}

.photo-block--reverse .photo-block__media {
    order: 2;
}

.photo-block--reverse .photo-block__caption {
    order: 1;
}

.photo-block__media {
    position: relative;
    overflow: hidden;
    background: #1a1815;
    aspect-ratio: 4 / 5;
}

.photo-block__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(0.08) contrast(1.02);
}

.photo-block__number {
    position: absolute;
    bottom: 14px;
    left: 14px;
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: rgba(242, 237, 230, 0.75);
    background: rgba(11, 11, 10, 0.55);
    padding: 4px 9px;
    backdrop-filter: blur(4px);
}

.photo-block__caption {
    max-width: 480px;
}

.photo-block__meta {
    font-size: 13px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin: 0 0 14px;
}

.photo-block__dot {
    color: var(--color-text-muted);
    margin: 0 4px;
}

.photo-block__caption p {
    font-size: clamp(15px, 1.4vw, 17px);
    color: var(--color-text-dim);
    margin: 0 0 14px;
}

.photo-block__caption p:last-child {
    margin-bottom: 0;
}

@media (max-width: 820px) {
    .photo-block,
    .photo-block--reverse {
        grid-template-columns: 1fr;
    }
    .photo-block--reverse .photo-block__media,
    .photo-block--reverse .photo-block__caption {
        order: initial;
    }
    .photo-block__media {
        aspect-ratio: 4 / 3;
    }
    .photo-block__caption {
        max-width: none;
    }
}

/* Scroll reveal animations -------------------------------------------------------- */
[data-animate] {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* data-reveal sta sul CONTENITORE (.photo-block__media), non sull'immagine:
   un elemento clippato al 100% ha area visibile zero, e Chrome/Safari non lo
   considerano mai "intersecante" con IntersectionObserver — l'animazione
   non scattava mai. Il contenitore resta sempre "visibile" per l'observer,
   mentre l'effetto sipario si applica all'img al suo interno. */
[data-reveal] img {
    clip-path: inset(100% 0 0 0);
    transform: scale(1.12);
    transition: clip-path 1.1s var(--ease), transform 1.3s var(--ease);
}

[data-reveal].is-visible img {
    clip-path: inset(0 0 0 0);
    transform: scale(1);
}

/* stagger caption slightly after image within a photo-block */
.photo-block .photo-block__caption {
    transition-delay: 0.12s;
}

/* Closing ---------------------------------------------------------------------------- */
.closing {
    padding: clamp(110px, 18vw, 220px) var(--gutter);
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(196, 85, 44, 0.08), transparent 65%);
}

.closing__inner {
    max-width: 680px;
    margin: 0 auto;
}

.closing__title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(34px, 5.5vw, 60px);
    margin: 0 0 26px;
}

.closing__text {
    font-size: clamp(16px, 1.6vw, 19px);
    color: var(--color-text-dim);
}

/* Footer -------------------------------------------------------------------------------- */
.site-footer {
    padding: 50px var(--gutter) 40px;
    border-top: 1px solid var(--color-line);
}

.site-footer__inner {
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
}

.site-footer__name {
    font-family: var(--font-display);
    font-size: 20px;
    margin: 0 0 4px;
}

.site-footer__role {
    font-size: 13px;
    color: var(--color-text-muted);
    margin: 0;
}

.site-footer__links {
    display: flex;
    gap: 26px;
    flex-wrap: wrap;
}

.site-footer__links a {
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--color-text-dim);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.site-footer__links a:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.site-footer__skype {
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

.site-footer__copy {
    width: 100%;
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 10px;
}