/* =========================================================
   portfolio single-page — codice originale
   layout ispirato allo schema dell'originale (nav / bio /
   progetti-accordion / cv ancorato), tema BIANCO, interazioni
   curate per essere più fluide: altezza reale animata, entrata
   scaglionata, galleria drag + scroll-snap.
   tipografia: helvetica neue, base 13px, line-height 111%.
   ========================================================= */

:root {
  --bg:    #ffffff;
  --fg:    #1a1a1a;
  --nav:   #8f8f8f;
  --muted: #6a6a6a;
  --sub:   #8a8a8a;
  --line:  #ededed;

  /* easing condiviso per coerenza del "feeling" */
  --ease:  cubic-bezier(.22, 1, .36, 1);

  letter-spacing: .1px;
  scroll-behavior: smooth;
  font-size: 13px;
  line-height: 111%;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Helvetica Neue", system-ui, -apple-system, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  font-weight: 500;
}

::selection { color: #fff; background: #111; }

html { max-width: 100vw; }

body {
  color: var(--fg);
  background: var(--bg);
  min-height: 100vh;
  padding-inline: .6rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* ---------- entrata in scena scaglionata ---------- */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay: var(--d, 0s);
}
body:not(.is-ready) .reveal {
  opacity: 0;
  transform: translateY(10px);
}

/* ---------- contenitore a tutta altezza ---------- */
.home-page {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 2rem;
  min-height: 100dvh;
  padding-block: 2rem;
  position: relative;
}

/* ---------- nav ---------- */
.navbar {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: .4rem 0;
}
.nav-inner { display: flex; flex-direction: row; gap: 1.5rem; width: 100%; }
.nav-links {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  width: 100%;
  color: var(--nav);
  font-weight: 500;
}
.nav-name { color: var(--fg); }
.nav-links a { transition: color .3s var(--ease); }
.nav-links a:hover { color: var(--fg); }

@media (max-width: 640px) {
  .navbar { flex-direction: column; align-items: flex-start; gap: .1rem; padding-top: 1rem; }
  .nav-inner { flex-direction: column; gap: .1rem; }
  .nav-links { flex-direction: column; align-items: flex-start; gap: .1rem; }
}

/* ---------- bio (arretra quando un progetto è aperto) ---------- */
.bio { width: 100%; max-width: min(70%, 960px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.bio-desc { text-align: left; max-width: 100%; margin-top: .6rem; line-height: 111%; }
.home-page.has-open .bio { opacity: .32; transform: translateY(-2px); }
@media (max-width: 640px) { .bio { max-width: 100%; } }

/* ---------- progetti (accordion) ---------- */
.accordion { margin-top: 4rem; position: relative; }
.accordion-inner { display: flex; flex-direction: column; gap: 0; }

.accordion-item {
  display: flex;
  flex-direction: column;
  color: var(--fg);
  transition: color .25s var(--ease);
}
.accordion-item:hover,
.accordion-item.is-active { color: #000; }

.accordion-trigger {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
  gap: 1.2rem;
  width: 100%;
  padding: .5rem 0;
  color: inherit;
  cursor: pointer;
  text-align: left;
  background: 0 0;
  border: 0;
  border-top: 1px solid var(--line);
}
.accordion-item:first-child .accordion-trigger { border-top: 0; }
.accordion-trigger:focus-visible { outline: 1px solid #0006; outline-offset: -4px; }

.accordion-field { white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
.accordion-title {
  grid-column: span 3;
  transition: transform .35s var(--ease);
}
.accordion-item:hover .accordion-title,
.accordion-item.is-active .accordion-title { transform: translateX(5px); }

.accordion-category { grid-column: span 3; color: var(--sub); }
.accordion-users    { grid-column: span 4; color: var(--sub); }
.accordion-year     { grid-column: span 1; color: var(--sub); }
.accordion-access {
  grid-column: span 1;
  justify-self: end;
  text-align: right;
  color: var(--sub);
  transition: transform .4s var(--ease), color .25s var(--ease);
}
.accordion-item.is-active .accordion-access { transform: rotate(45deg); color: #000; } /* + → × */

/* pannello: altezza reale animata via grid-template-rows 0fr → 1fr */
.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows .55s var(--ease), opacity .45s ease;
}
.accordion-panel.is-open { grid-template-rows: 1fr; opacity: 1; }
.accordion-panel > .panel-inner { overflow: hidden; min-height: 0; }

.accordion-description {
  max-width: 58%;
  color: var(--muted);
  line-height: 111%;
  padding: .2rem 0 1rem;
  white-space: normal;
}

.panel-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--fg);
  border-bottom: 1px solid var(--fg);
  padding-bottom: 1px;
  transition: opacity .25s var(--ease);
}
.panel-link:hover { opacity: .5; }

/* ---------- galleria (drag + scroll-snap) ---------- */
.gallery { padding-bottom: 1.1rem; }
.gallery-track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 8px;
  scrollbar-width: none;
  cursor: grab;
  user-select: none;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}
.gallery-track::-webkit-scrollbar { display: none; }
.gallery-track.is-dragging { cursor: grabbing; scroll-snap-type: none; }
/* durante lo scorrimento automatico disattivo lo snap così i piccoli
   incrementi per-frame non vengono "riagganciati" dal browser */
.gallery-track.is-auto { scroll-snap-type: none; }

.slide {
  flex: 0 0 auto;
  width: auto;           /* larghezza = aspetto reale del media all'altezza fissa */
  height: 600px;         /* altezza fissa */
  scroll-snap-align: start;
  border-radius: 0;      /* angoli netti */
  overflow: hidden;
  background: #f1efe9;
}
.slide-media {
  width: auto;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none; /* il drag scorre senza "afferrare" img/video */
}

/* ---- raggruppamento per progetto nello slider ----
   ogni progetto è un gruppo; tra un gruppo e l'altro c'è un'apertura
   (spazio + linea netta + etichetta verticale) e lo scroll vi si aggancia. */
.gallery-group { display: flex; gap: 10px; }
.gallery-group + .gallery-group { margin-left: 40px; } /* l'apertura tra un progetto e l'altro */

.group-marker {
  flex: 0 0 auto;
  align-self: stretch;
  display: flex;
  align-items: flex-end;
  padding: 0 1rem .3rem .55rem;
  border-left: 1px solid var(--fg);   /* linea netta = inizio progetto */
  scroll-snap-align: start;
  scroll-snap-stop: always;           /* lo scroll si ferma all'inizio di ogni progetto */
}
.group-marker span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-size: .9rem;
  letter-spacing: .03em;
  color: var(--muted);
  white-space: nowrap;
}

/* slide segnaposto (in attesa dei media reali) */
.slide--ph {
  width: 360px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
}
.slide--ph span { color: var(--sub); font-size: .9rem; }

@media (max-width: 640px) {
  .accordion-trigger { gap: 0 .4rem; }
  .accordion-title  { grid-column: 1 / 7; }
  .accordion-year   { grid-column: 7 / 11; }
  .accordion-access { grid-column: 11 / 13; }
  .accordion-category, .accordion-users { display: none; }
  .accordion-description { max-width: 100%; }
}

/* ---------- cv (ancorato in basso) ---------- */
.resume { margin-top: auto; padding-bottom: 1rem; position: relative; }
.resume-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  align-items: start;
  gap: 6px 16px;
}
.resume-grid--spaced { margin-top: 1.2rem; }

.col-label { grid-column: 1 / span 3; color: var(--nav); }
.col-item  { grid-column: 4 / 8;  line-height: 1.2; }
.col-year  { grid-column: 8 / 9;  justify-self: start; white-space: nowrap; color: var(--sub); }
.sub       { color: var(--sub); }

@media (max-width: 640px) {
  .resume-grid { gap: .4rem .6rem; }
  .col-label { grid-column: 1 / -1; }
  .col-item  { grid-column: 1 / 9; }
  .col-year  { grid-column: 9 / 13; justify-self: end; }
}

/* ---------- rispetto delle preferenze di movimento ---------- */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; }
  .reveal,
  .bio,
  .accordion-title,
  .accordion-access,
  .accordion-panel { transition-duration: .01ms !important; }
  body:not(.is-ready) .reveal { opacity: 1; transform: none; }
}