/* =========================================================================
   Portfolio — design system
   Minimal, editorial, photograph-first. Light by default; respects dark mode
   only where it doesn't fight the imagery (kept neutral on purpose).
   ========================================================================= */

:root {
  /* Colour */
  --bg: #ffffff;
  --bg-alt: #fafaf8;
  --fg: #141414;
  --fg-soft: #6b6b6b;
  --line: #e7e6e2;
  --overlay: rgba(15, 15, 15, 0.55);
  --accent: #141414;

  /* Typography */
  --font-sans: "Helvetica Neue", Helvetica, Arial, "Segoe UI", Roboto, system-ui, sans-serif;
  --fs-wordmark: 0.82rem;
  --fs-body: 1.02rem;
  --fs-h1: clamp(1.9rem, 4vw, 3rem);
  --fs-h2: 1.15rem;
  --lh: 1.6;
  --tracking: 0.18em;

  /* Space */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --space-6: 8rem;

  /* Layout */
  --maxw: 1600px;
  --maxw-read: 720px;
  --maxw-gallery: 1100px;
  --gutter: clamp(1.1rem, 4vw, 3.5rem);
  --radius: 0;

  /* Motion */
  --t-fast: 140ms ease;
  --t-med: 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----- Reset-ish --------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--fg); color: #fff; padding: .6rem 1rem; z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; }

:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; }

/* ----- Header ------------------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1) blur(6px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.site-header__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--space-3) var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-2);
}
.wordmark {
  grid-column: 2;
  font-size: var(--fs-wordmark);
  font-weight: 700;
  letter-spacing: var(--tracking);
  text-transform: uppercase;
  text-align: center;
  white-space: nowrap;
}
.nav {
  grid-column: 3;
  display: flex; justify-content: flex-end; gap: var(--space-3);
}
.nav__link {
  font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--fg-soft); transition: color var(--t-fast);
}
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--fg); }

.nav-toggle {
  grid-column: 3; justify-self: end;
  display: none; width: 44px; height: 44px; border: 0; background: none;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle__bar { width: 22px; height: 1.5px; background: var(--fg); transition: transform var(--t-med), opacity var(--t-fast); }

/* ----- Footer ------------------------------------------------------------ */
.site-footer { margin-top: var(--space-6); border-top: 1px solid var(--line); }
.site-footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: var(--space-4) var(--gutter);
  display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4);
  align-items: center; justify-content: space-between;
  font-size: 0.8rem; color: var(--fg-soft);
}
.site-footer__name { font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--fg); }
.site-footer__nav { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.site-footer__nav a:hover { color: var(--fg); }

/* ----- Home covers ------------------------------------------------------- */
.home { max-width: var(--maxw); margin: 0 auto; padding: var(--space-4) var(--gutter) 0; }
.cover-list { display: flex; flex-direction: column; gap: var(--space-6); }
.cover { display: block; }
.cover__media {
  position: relative; overflow: hidden; background: var(--bg-alt);
}
.cover__img { width: 100%; transition: transform 1200ms cubic-bezier(0.22, 1, 0.36, 1); }
.cover__placeholder { display: block; width: 100%; aspect-ratio: 3 / 2; background: var(--bg-alt); }
/* Sober fallback when a project has no cover image */
.cover__fallback {
  display: flex; align-items: center; justify-content: center;
  width: 100%; aspect-ratio: 3 / 2; background: var(--bg-alt);
  color: var(--fg-soft); font-size: 0.85rem; letter-spacing: 0.14em; text-transform: uppercase;
}
/* Hover overlay: signature big title on pointer devices (enhancement only) */
.cover__overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: linear-gradient(to top, rgba(15,15,15,0.55) 0%, rgba(15,15,15,0) 55%);
  color: #fff; opacity: 0; transition: opacity var(--t-med);
}
.cover__year { font-size: 0.8rem; letter-spacing: 0.12em; opacity: 0.9; margin-bottom: 0.35rem; }
.cover__title { font-size: clamp(1.4rem, 3vw, 2.4rem); font-weight: 400; line-height: 1.12; max-width: 22ch; }
@media (hover: hover) and (pointer: fine) {
  .cover:hover .cover__overlay,
  .cover:focus-visible .cover__overlay { opacity: 1; }
  .cover:hover .cover__img { transform: scale(1.015); }
}
/* Caption below the cover — ALWAYS visible so the title never depends on hover */
.cover__caption {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-2);
  padding: var(--space-2) 0 0; flex-wrap: wrap;
}
.cover__caption-title { font-size: 1.05rem; }
.cover__caption-meta { font-size: 0.8rem; color: var(--fg-soft); letter-spacing: 0.04em; }

/* ----- Home variant: "banded" (admin-selectable) -------------------------
   Wide, thin cinematic bands ("strette e lunghe"): every cover is cropped to a
   fixed band ratio, title revealed as a dark overlay on hover (reference look).
   ------------------------------------------------------------------------- */
.home--banded { --band-ratio: 2.7 / 1; }
.cover-list--banded { gap: var(--space-3); }
.cover--banded .cover__media { aspect-ratio: var(--band-ratio); }
/* Fill + crop the band; override the inline natural aspect-ratio from image_tag */
.cover--banded .cover__img {
  width: 100%; height: 100%; object-fit: cover; aspect-ratio: auto !important;
}
.cover--banded .cover__fallback { aspect-ratio: var(--band-ratio); }
/* Title lives in the overlay only; no caption below in this variant */
.cover--banded .cover__caption { display: none; }
.cover--banded .cover__overlay {
  justify-content: center;
  padding: 0 clamp(1.75rem, 6vw, 6rem);
  background: rgba(15, 15, 15, 0.5);
}
.cover--banded .cover__year { font-size: 0.85rem; margin-bottom: 0.45rem; }
.cover--banded .cover__title { font-size: clamp(1.5rem, 3.2vw, 2.9rem); max-width: 24ch; }
/* On touch / no-hover, the band title must be visible without hovering */
@media (hover: none), (pointer: coarse) {
  .cover--banded .cover__overlay {
    opacity: 1; justify-content: flex-end;
    background: linear-gradient(to top, rgba(15,15,15,0.6) 0%, rgba(15,15,15,0) 60%);
  }
}
/* Give mobile bands a bit more height so they aren't slivers, and always show
   the title (belt-and-suspenders with the hover:none rule above) */
@media (max-width: 700px) {
  .home--banded { --band-ratio: 3 / 2; }
  .cover--banded .cover__overlay {
    opacity: 1; justify-content: flex-end;
    background: linear-gradient(to top, rgba(15,15,15,0.6) 0%, rgba(15,15,15,0) 60%);
  }
}

/* ----- Project page ------------------------------------------------------ */
.project { padding-top: var(--space-4); }
.project__header {
  max-width: var(--maxw-read); margin: 0 auto var(--space-5);
  padding: 0 var(--gutter); text-align: center;
}
.project__title { font-size: var(--fs-h1); font-weight: 400; line-height: 1.08; }
.project__meta { margin-top: var(--space-2); color: var(--fg-soft); font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase; }
.project__description { margin-top: var(--space-3); text-align: left; color: #333; }

/* Gallery base: image opener button resets */
.gallery__open { display: block; width: 100%; padding: 0; border: 0; background: none; cursor: zoom-in; }
.gallery__img { width: 100%; background: var(--bg-alt); }
.gallery__caption { margin-top: var(--space-1); font-size: 0.8rem; color: var(--fg-soft); text-align: center; }
.gallery__item { margin: 0; min-width: 0; }

/* Vertical: 2-column portrait grid by default; 3 columns only on very wide screens */
.gallery--vertical {
  max-width: var(--maxw-gallery); margin: 0 auto; padding: 0 var(--gutter);
  display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4) var(--space-3);
  align-items: start;
}
@media (min-width: 1600px) {
  .gallery--vertical { max-width: var(--maxw); grid-template-columns: repeat(3, 1fr); }
}

/* Horizontal: wide stacked rhythm, alternating contained / full-bleed */
.gallery--horizontal {
  display: flex; flex-direction: column; align-items: center; gap: var(--space-5);
}

/* Mixed editorial: explicit rows (built server-side → never any holes) */
.gallery--mixed {
  display: flex; flex-direction: column; align-items: center; gap: var(--space-4);
}

/* Rows shared by mixed + horizontal. Rows stretch via width:100%; the parent's
   align-items:center centers narrower rows without collapsing them. */
.gallery-row { width: 100%; display: flex; gap: var(--space-3); align-items: flex-start; justify-content: center; }
.gallery-row .gallery__item { width: 100%; }
.gallery-row--full { max-width: var(--maxw); padding: 0 var(--gutter); }
.gallery-row--wide { max-width: var(--maxw-gallery); padding: 0 var(--gutter); }
.gallery-row--standard { max-width: var(--maxw-gallery); padding: 0 var(--gutter); }
.gallery-row--standard .gallery__item { max-width: 62%; }
.gallery-row--single-pair { max-width: var(--maxw-gallery); padding: 0 var(--gutter); }
.gallery-row--single-pair .gallery__item { max-width: 48%; }
.gallery-row--pair { max-width: var(--maxw-gallery); padding: 0 var(--gutter); }
.gallery-row--pair .gallery__item { flex: 1 1 0; }

/* Alignment for single, contained items (flex auto-margins beat justify-content) */
.gallery-row--standard .gallery__item.align-left,
.gallery-row--single-pair .gallery__item.align-left { margin-right: auto; }
.gallery-row--standard .gallery__item.align-right,
.gallery-row--single-pair .gallery__item.align-right { margin-left: auto; }

/* Project nav */
.project__nav {
  max-width: var(--maxw-gallery); margin: var(--space-6) auto 0;
  padding: var(--space-4) var(--gutter) 0; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-2); align-items: center;
}
.project__nav-side { min-width: 0; }
.project__nav-side--right { text-align: right; }
.project__nav-link { display: inline-flex; flex-direction: column; }
.project__nav-link--next { align-items: flex-end; }
.project__nav-dir { font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-soft); }
.project__nav-name { font-size: 0.95rem; }
.project__nav-home { justify-self: center; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }
.project__nav-home:hover, .project__nav-link:hover .project__nav-name { color: var(--fg); }

/* ----- About ------------------------------------------------------------- */
.about { max-width: var(--maxw); margin: 0 auto; padding: var(--space-5) var(--gutter); }
.about__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--space-5); align-items: start; }
.about__img { width: 100%; }
.about__title { font-size: var(--fs-h1); font-weight: 400; }
.about__subtitle { margin-top: var(--space-1); color: var(--fg-soft); letter-spacing: 0.04em; }
.about__bio { max-width: var(--maxw-read); margin-top: var(--space-3); }
.about__line { margin-top: var(--space-3); }
.about__label { display: inline-block; min-width: 4rem; color: var(--fg-soft); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }
.about__block { margin-top: var(--space-4); }
.about__h2 { font-size: var(--fs-h2); font-weight: 700; margin-bottom: var(--space-1); }
.about__list li { padding: 0.15rem 0; color: #333; }
.about__social { margin-top: var(--space-4); display: flex; gap: var(--space-3); }
.about__social a { border-bottom: 1px solid var(--line); }
.about__social a:hover { border-color: var(--fg); }
.about__cta { margin-top: var(--space-4); }

/* ----- Contact ----------------------------------------------------------- */
.contact { max-width: var(--maxw-gallery); margin: 0 auto; padding: var(--space-5) var(--gutter); }
.contact__header { max-width: var(--maxw-read); margin-bottom: var(--space-4); }
.contact__title { font-size: var(--fs-h1); font-weight: 400; }
.contact__intro { margin-top: var(--space-2); color: #333; }
.contact__grid { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: var(--space-5); align-items: start; }
.contact__info p { margin-bottom: var(--space-2); display: flex; flex-direction: column; }
.contact__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-soft); margin-bottom: 0.15rem; }
.contact__info a:hover { text-decoration: underline; }

/* ----- Forms ------------------------------------------------------------- */
.form { display: flex; flex-direction: column; gap: var(--space-3); }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font-size: 0.82rem; letter-spacing: 0.03em; color: #333; }
.field input, .field textarea {
  font: inherit; padding: 0.7rem 0.8rem; border: 1px solid var(--line);
  background: var(--bg); border-radius: var(--radius); color: var(--fg);
  transition: border-color var(--t-fast); min-height: 44px;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--fg); }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: #b3261e; }
.field__error { color: #b3261e; font-size: 0.8rem; }
.field--check .check { flex-direction: row; display: flex; gap: 0.6rem; align-items: flex-start; font-size: 0.9rem; }
.field--check input { width: 20px; height: 20px; min-height: 20px; margin-top: 2px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.button {
  display: inline-block; padding: 0.8rem 1.6rem; background: var(--fg); color: #fff;
  border: 1px solid var(--fg); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase;
  transition: background var(--t-fast), color var(--t-fast); min-height: 44px;
}
.button:hover { background: transparent; color: var(--fg); }
.button--full { width: 100%; text-align: center; }

.alert { padding: 0.9rem 1.1rem; border: 1px solid; font-size: 0.92rem; }
.alert--success { border-color: #1c7a45; color: #1c7a45; background: #f2faf5; }
.alert--error { border-color: #b3261e; color: #b3261e; background: #fdf3f2; }

.empty-note { max-width: var(--maxw-read); margin: var(--space-5) auto; padding: 0 var(--gutter); text-align: center; color: var(--fg-soft); }
.empty-note a { border-bottom: 1px solid; }

/* ----- 404 --------------------------------------------------------------- */
.notfound { text-align: center; padding: var(--space-6) var(--gutter); }
.notfound__code { font-size: clamp(4rem, 14vw, 9rem); font-weight: 300; letter-spacing: 0.05em; }
.notfound__text { color: var(--fg-soft); margin-bottom: var(--space-4); }

/* ----- Lightbox ---------------------------------------------------------- */
.lightbox {
  position: fixed; inset: 0; z-index: 100; background: rgba(12, 12, 12, 0.96);
  display: flex; align-items: center; justify-content: center;
}
.lightbox[hidden] { display: none; }
.lightbox__figure { margin: 0; max-width: 92vw; max-height: 88vh; display: flex; flex-direction: column; align-items: center; }
.lightbox__img { max-width: 92vw; max-height: 82vh; width: auto; height: auto; object-fit: contain; opacity: 0; transition: opacity var(--t-med); }
.lightbox__img.is-loaded { opacity: 1; }
.lightbox__caption { color: rgba(255,255,255,0.75); font-size: 0.85rem; margin-top: var(--space-2); text-align: center; }
.lightbox__btn {
  position: absolute; background: none; border: 0; color: #fff; opacity: 0.75;
  transition: opacity var(--t-fast); line-height: 1; padding: 0.5rem;
  min-width: 44px; min-height: 44px;
}
.lightbox__btn:hover { opacity: 1; }
.lightbox__close { top: 1rem; right: 1.2rem; font-size: 2.4rem; }
.lightbox__prev, .lightbox__next { top: 50%; transform: translateY(-50%); font-size: 3rem; }
.lightbox__prev { left: 0.6rem; }
.lightbox__next { right: 0.6rem; }
.lightbox__counter { position: absolute; bottom: 1rem; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,0.6); font-size: 0.8rem; }

/* ----- Reveal animation -------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 700ms ease, transform 700ms cubic-bezier(0.22,1,0.36,1); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ----- Responsive -------------------------------------------------------- */
@media (max-width: 900px) {
  .site-header__inner { grid-template-columns: 1fr auto; }
  .wordmark { grid-column: 1; text-align: left; }
  .nav-toggle { display: flex; grid-column: 2; }
  .nav {
    grid-column: 1 / -1; flex-direction: column; align-items: flex-start; justify-content: flex-start;
    gap: var(--space-2); max-height: 0; overflow: hidden; opacity: 0;
    transition: max-height var(--t-med), opacity var(--t-fast), margin var(--t-med);
    margin-top: 0;
  }
  .nav.is-open { max-height: 60vh; opacity: 1; margin-top: var(--space-3); }
  .nav__link { font-size: 1rem; padding: 0.4rem 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(3.25px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { transform: translateY(-3.25px) rotate(-45deg); }

  .cover__title { font-size: 1.4rem; }

  /* On mobile every composition collapses to a simple, readable single column */
  .gallery--vertical { grid-template-columns: repeat(2, 1fr); gap: var(--space-3) var(--space-2); }
  .gallery-row { flex-direction: column; gap: var(--space-3); padding-left: var(--gutter); padding-right: var(--gutter); }
  .gallery-row--full, .gallery-row--wide, .gallery-row--standard,
  .gallery-row--pair, .gallery-row--single-pair { max-width: 100%; }
  .gallery-row .gallery__item,
  .gallery-row--standard .gallery__item,
  .gallery-row--single-pair .gallery__item { max-width: 100%; margin: 0; }

  .about__grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .about__media { max-width: 360px; }
  .contact__grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .project__nav { grid-template-columns: 1fr; text-align: center; gap: var(--space-3); }
  .project__nav-side, .project__nav-side--right { text-align: center; }
  .project__nav-link, .project__nav-link--next { align-items: center; }
}

@media (max-width: 560px) {
  .gallery--vertical { grid-template-columns: 1fr; }
  .lightbox__prev, .lightbox__next { font-size: 2.2rem; }
}

/* ----- Motion / dark preferences ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .cover:hover .cover__img { transform: none; }
}

@media print {
  .site-header, .site-footer, .lightbox, .project__nav { display: none; }
}