/* =========================================================
   Riccardo Zozzolotto — portfolio
   1) Token  2) Base  3) Utility  4) Chrome (loader, nav, menu)
   5) Hero   6) Intro 7) Lavori   8) Percorso  9) Contatti
   10) Footer 11) Responsive 12) Motion ridotta
   ========================================================= */

/* ---------- 1) TOKEN ---------- */
:root {
  /* Tre superfici, una sola tinta d'accento. Niente gradienti. */
  --ink:        #1c1d20;   /* carbone: sezioni scure, testo su chiaro */
  --ink-deep:   #141517;   /* loader e pannello menu */
  --paper:      #ffffff;
  --stone:      #818685;   /* campo grigio dell'hero */
  --accent:     #455ce9;   /* indaco, solo sui cerchi */

  /* Colori di brand: compaiono SOLO in hover/focus, nelle copertine dell'anteprima e dietro i loghi. A riposo la pagina resta sui cinque token. */
  --brand-espiu:          #88bf9a;   /* verde espiu.it: barra decorativa e chip del logo (ink sopra 8.0:1) */
  --brand-espiu-deep:     #205354;   /* teal scuro: sfondo con testo bianco 8.65:1, testo su bianco 8.65:1 */
  --brand-enernext:       #4682b4;   /* blu acciaio enernext.it: solo barra decorativa, mai sotto testo */
  --brand-enernext-deep:  #243369;   /* navy: bianco sopra 11.98:1, su bianco 11.98:1 */
  --brand-its:            #308291;   /* teal itsdigitalacademy.com: solo barra decorativa */
  --brand-its-deep:       #006581;   /* bianco sopra 6.61:1, su bianco 6.61:1 */
  --brand-its-chip:       #fab800;   /* giallo: ink sopra 9.57:1 */

  /* Grigi derivati, tutti freddi come l'inchiostro */
  --on-paper-muted: #6b6d72;   /* 5.2:1 su bianco */
  --on-ink-muted:   #9b9da3;   /* 6.2:1 su carbone */
  --hairline-dark:  rgba(28, 29, 32, 0.16);
  --hairline-light: rgba(255, 255, 255, 0.18);

  --font: "Geist", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --shell: 1440px;
  --gutter: clamp(1.5rem, 4vw, 4rem);
  --block: clamp(7rem, 16vh, 12rem);

  /* Una sola curva per tutto: inerzia pesante, niente rimbalzi */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --slow: 1.1s;
  --mid:  0.6s;
  --fast: 0.3s;
  --swift: 0.35s;   /* colore e sfondo: entrano svelti, escono con --mid */
  --reveal: 0.8s;   /* fade degli elementi .reveal */

  --col-gap: clamp(2rem, 7vw, 7rem);     /* gap delle due colonne (intro, hero) */
  --circle: clamp(7.5rem, 11vw, 10.5rem);
  --curve-depth: clamp(5rem, 8vw, 9rem);

  /* Scala minuta: due registri mono, un corpo piccolo */
  --mono-label: 0.68rem;   /* etichette e numeri d'ordine, tracking 0.12em, maiuscolo */
  --mono-data:  0.8rem;    /* dati: stack, date, tracking 0.02em */
  --text-sm:    0.875rem;  /* topbar, pillole, cerchi, footer */

  --hairline-stone: rgba(28, 29, 32, 0.22);
  --fill-light: rgba(255, 255, 255, 0.14);
  --hairline-light-strong: rgba(255, 255, 255, 0.28);

  --z-grain: 80;
  --z-topbar: 40;
  --z-menu: 60;
  --z-menu-btn: 70;
  --z-loader: 90;
}

/* ---------- 2) BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 400;
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, p, ul, ol, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }

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

/* ---------- 3) UTILITY ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Etichetta minuscola in mono: l'unico uso dello stampatello */
.micro {
  font-family: var(--mono);
  font-size: var(--mono-label);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--micro, var(--on-paper-muted));
}

/* Due colori di testo per superficie: la superficie dichiara il suo --micro una volta sola */
.hero, .path { --micro: var(--ink); }
.menu, .contact, .footer { --micro: var(--on-ink-muted); }

.display {
  font-size: clamp(2.6rem, 7vw, 6.5rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.display--light { color: var(--paper); }

.rule { border: 0; border-top: 1px solid var(--hairline-light); margin: 0; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: -5rem; left: 1rem;
  z-index: 100;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--text-sm);
  transition: top var(--fast) var(--ease);
}

.skip-link:focus-visible { top: 1rem; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

/* L'anello prende il colore che regge sulla superficie: ink su pietra 4.56:1, bianco su carbone 16.9:1 */
.hero :focus-visible, .topbar :focus-visible, .path :focus-visible, .lost :focus-visible { outline-color: var(--ink); }
.contact :focus-visible, .footer :focus-visible, .menu :focus-visible { outline-color: var(--paper); }

/* Bottone menu e skip link sono fixed sopra superfici diverse: anello dentro la forma, indipendente dallo sfondo */
.menu-btn:focus-visible, .skip-link:focus-visible { outline-color: var(--paper); outline-offset: -6px; }

.work__row:focus-visible { border-radius: 4px; }

/* Grana fotografica: rumore nero in alpha, composito normale (niente blend: costa un layer offscreen a ogni frame). Taratura 0.06–0.10. */
.grain {
  position: fixed;
  inset: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: 0.08;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ---------- 4) CHROME ---------- */

/* Loader: saluti a rotazione, poi la tenda si alza con il bordo curvo */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: grid;
  place-items: center;
  background: var(--ink-deep);
  transition: transform var(--slow) var(--ease), border-radius var(--slow) var(--ease);
}

.loader.is-done {
  transform: translateY(-100%);
  border-bottom-left-radius: 52% 26%;
  border-bottom-right-radius: 52% 26%;
  pointer-events: none;
}

.loader__word {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--paper);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  opacity: 0;
  transition: opacity 0.12s var(--ease);
}

/* Solo la prima parola sfuma: le altre cambiano secche, come nel riferimento */
.loader__word.is-live { opacity: 1; }

.loader__word::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--paper);
}

/* Barra in alto: scorre via con la pagina, non è sticky */
.topbar {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: var(--z-topbar);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem var(--gutter);
  color: var(--ink);
  font-size: var(--text-sm);
}

.topbar__nav { display: flex; gap: clamp(1.5rem, 3vw, 3rem); }

/* Sottolineatura che entra da sinistra ed esce a destra: la condividono topbar e indice dell'hero */
.topbar a, .hero__index a { position: relative; padding-bottom: 2px; }

.topbar a::after, .hero__index a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--mid) var(--ease);
}

.topbar a:hover::after, .topbar a:focus-visible::after,
.hero__index a:hover::after, .hero__index a:focus-visible::after { transform: scaleX(1); transform-origin: left; }


/* Cambio lingua: mostra la lingua di destinazione, così non serve uno stato spento poco leggibile */
.lang {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: none;
  color: inherit;
  font-family: var(--mono);
  font-size: var(--mono-label);
  letter-spacing: 0.08em;
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--swift) var(--ease), color var(--swift) var(--ease);
}

.topbar .lang { margin-left: 0.4rem; }
.lang:hover, .lang:focus-visible { background: var(--ink); color: var(--paper); }
.menu .lang { align-self: flex-start; margin-top: 0.6rem; }
.menu .lang:hover, .menu .lang:focus-visible { background: var(--paper); color: var(--ink); }

/* Bottone menu: entra dopo l'hero */
.menu-btn {
  position: fixed;
  top: 1.6rem; right: var(--gutter);
  z-index: var(--z-menu-btn);
  width: 74px; height: 74px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--ink-deep);
  color: var(--paper);
  cursor: pointer;
  opacity: 0;
  transform: scale(0.4);
  pointer-events: none;
  visibility: hidden;
  transition: opacity var(--mid) var(--ease), transform var(--magnet, var(--mid)) var(--ease),
              background var(--mid) var(--ease), scale var(--fast) var(--ease),
              visibility 0s linear var(--mid);
}

/* Da mostrato la visibilità scatta subito; da nascosto aspetta la fine del fade */
.menu-btn.is-shown { opacity: 1; transform: scale(1); pointer-events: auto; visibility: visible; transition-delay: 0s; }
.menu-btn[aria-expanded="true"] { background: var(--accent); }
.menu-btn:active { scale: 0.96; }

/* Le barre seguono il magnete a metà forza, come lo span dei cerchi */
.menu-btn__bars { display: grid; gap: 6px; transition: transform var(--magnet, var(--mid)) var(--ease); }

.menu-btn__bars i {
  display: block;
  width: 22px; height: 1.5px;
  background: currentColor;
  transition: transform var(--mid) var(--ease);
}

.menu-btn[aria-expanded="true"] .menu-btn__bars i:first-child { transform: translateY(3.75px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn__bars i:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

/* Pannello menu: entra da destra con il bordo sinistro che si raddrizza */
.menu {
  position: fixed;
  top: 0; right: 0;
  z-index: var(--z-menu);
  width: min(30rem, 100%);
  height: 100dvh;
  padding: 7rem var(--gutter) 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  background: var(--ink-deep);
  color: var(--paper);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(100%);
  border-top-left-radius: 50% 22%;
  border-bottom-left-radius: 50% 22%;
  transition: transform var(--mid) var(--ease), border-radius var(--mid) var(--ease);
}

/* Apre in --slow, chiude in --mid: l'uscita non deve farsi aspettare */
.menu.is-open { transform: translateX(0); border-radius: 0; transition-duration: var(--slow); }

/* Le voci entrano dopo il pannello, una alla volta; in chiusura seguono il pannello senza ritardo */
.menu .micro, .menu__list li, .menu__socials {
  opacity: 0;
  transform: translateY(1.4rem);
  transition: opacity var(--mid) var(--ease), transform var(--mid) var(--ease);
}

.menu.is-open .micro, .menu.is-open .menu__list li, .menu.is-open .menu__socials {
  opacity: 1;
  transform: none;
  transition-delay: calc(0.25s + var(--i, 0) * 60ms);
}

.menu__list li:nth-child(1) { --i: 1; }
.menu__list li:nth-child(2) { --i: 2; }
.menu__list li:nth-child(3) { --i: 3; }
.menu__list li:nth-child(4) { --i: 4; }
.menu__list li:nth-child(5) { --i: 5; }
.menu__list + .micro { --i: 6; }
.menu__socials { --i: 7; }

.menu .micro + * { margin-top: 0.4rem; }

.menu__list {
  border-top: 1px solid var(--hairline-light);
  padding-top: 1.6rem;
  margin-bottom: auto;
}

.menu__list a {
  position: relative;
  display: block;
  padding-left: 1.4rem;
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.03em;
  transform-origin: left;
  transition: color var(--swift) var(--ease), scale var(--fast) var(--ease);
}

/* Punto pieno in bianco: hover, fuoco e sezione corrente (aria-current scritto da initActiveSection) */
.menu__list a::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--paper);
  transform: translateY(-50%) scale(0);
  transition: transform var(--mid) var(--ease);
}

.menu__list a:hover::before,
.menu__list a:focus-visible::before,
.menu__list a[aria-current="location"]::before { transform: translateY(-50%) scale(1); }

.menu__list a:active { scale: 0.98; }

.menu__socials {
  display: flex;
  gap: 1.5rem;
  border-top: 1px solid var(--hairline-light);
  padding-top: 1.2rem;
  font-size: var(--text-sm);
  color: var(--on-ink-muted);
}

.menu__socials a { transition: color var(--swift) var(--ease); }
.menu__socials a:hover, .menu__socials a:focus-visible { color: var(--paper); }

/* ---------- 5) HERO ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  background: var(--stone);
}

/* Bordo curvo composito: una semi-ellisse dello stesso colore che si gonfia (scaleY) mentre la sezione sale */
[data-curve] { position: relative; z-index: 1; }

[data-curve]::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 100%;
  height: var(--curve-depth);
  border-radius: 0 0 50% 50% / 0 0 100% 100%;
  background: inherit;
  transform-origin: top;
  transform: scaleY(var(--curve, 0));
  pointer-events: none;
}

/* La sezione dopo una curva riceve l'aria che l'ellisse copre */
.hero + .intro, .path + .contact { padding-top: calc(var(--block) + var(--curve-depth) / 2); }

/* Due colonne come l'intro: il ruolo cade sullo stesso asse di .intro__body */
.hero__stage {
  position: relative;
  z-index: 1;
  min-height: 0;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: var(--col-gap);
  align-items: stretch;
  padding: 6rem var(--gutter) clamp(3rem, 8vh, 5rem);
  transform: translateY(calc(var(--curve, 0) * 4vh));
}

.hero__aside {
  grid-column: 1;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.hero__meta {
  display: grid;
  gap: 1.4rem;
  margin: 0;
}

.hero__meta dt { margin-bottom: 0.3rem; }
.hero__meta dd { margin: 0; }

/* Pastiglia scura in basso a sinistra */
.hero__pill {
  display: inline-flex;
  align-items: center;
  gap: 1.4rem;
  margin-bottom: clamp(0.5rem, 4vh, 2.5rem);
  padding: 0.9rem 0.9rem 0.9rem 1.6rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--text-sm);
  line-height: 1.25;
}

.hero__pill-icon {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--fill-light);
}

.hero__pill-icon svg {
  width: 20px; height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
}

/* Il ritratto è opt-in: senza assets/me.png la composizione tipografica è quella di default */
.hero__portrait {
  grid-column: 2;
  position: relative;
  align-self: end;
  height: min(52vh, 30rem);
  aspect-ratio: 4 / 5;
  display: none;
}

.hero__portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  mask-image: linear-gradient(to bottom, #000 78%, transparent 100%);
}

/* Con la foto la griglia torna a tre colonne: il ritratto in mezzo, ruolo e indice a destra */
.hero.has-portrait .hero__stage { grid-template-columns: 1fr auto 1fr; column-gap: var(--gutter); }
.hero.has-portrait .hero__portrait { display: block; }
.hero.has-portrait .hero__right { grid-column: 3; align-self: center; }

.hero__right {
  grid-column: 2;
  justify-self: start;
  align-self: start;
  display: grid;
  gap: clamp(2rem, 6vh, 3.5rem);
}

/* Indice delle sezioni: riempie il vuoto e fa da navigazione */
.hero__index {
  display: grid;
  gap: 0.45rem;
}

.hero__index a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  padding-block: 0.1rem;
}

/* Stesso inchiostro del testo: su pietra l'opacità scenderebbe sotto AA */
.hero__index a span {
  font-family: var(--mono);
  font-size: var(--mono-label);
  letter-spacing: 0.12em;
  color: var(--ink);
}

.hero__role {
  position: relative;
  padding-top: 3.5rem;
  font-size: clamp(1.75rem, 3.2vw, 3rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero__arrow {
  position: absolute;
  top: 0; left: 0;
  width: 26px; height: 26px;
  transform: rotate(90deg);
}

.hero__arrow svg {
  width: 100%; height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
}

/* L'hero entra mentre la tenda è ancora a metà: body.is-ready lo aggiunge initLoader */
.hero__meta, .hero__pill, .hero__role, .hero__index {
  opacity: 0;
  transform: translateY(1.2rem);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.hero__meta  { transition-delay: 0.35s; }
.hero__role  { transition-delay: 0.43s; }
.hero__index { transition-delay: 0.51s; }
.hero__pill  { transition-delay: 0.59s; }

.is-ready .hero__meta, .is-ready .hero__pill, .is-ready .hero__role, .is-ready .hero__index { opacity: 1; transform: none; }

/* Barra dello stack: le icone scorrono lungo un arco con gli estremi alzati.
   Il tracciato è scritto da initStrip in px (offset-path non accetta variabili). */
.strip {
  position: relative;
  height: var(--strip-h, 8rem);
  overflow: hidden;
  opacity: 0;
  transition: opacity 1.2s var(--ease) 0.6s;
}

.is-ready .strip { opacity: 1; }

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

.strip__item {
  position: absolute;
  top: 0; left: 0;
  width: var(--strip-size, 3rem);
  aspect-ratio: 1;
  color: var(--tint, var(--paper));
  offset-path: var(--path, none);
  offset-rotate: 0deg;
  offset-distance: 0%;
  animation: strip-travel var(--strip-dur, 70s) linear infinite;
  /* Ritardo negativo: le icone partono già distribuite lungo l'arco */
  animation-delay: calc(var(--i) / var(--n) * var(--strip-dur, 70s) * -1);
  pointer-events: auto;
}

.strip__item svg { display: block; width: 100%; height: 100%; fill: currentColor; }

@keyframes strip-travel {
  from { offset-distance: 0%; }
  to   { offset-distance: 100%; }
}

/* Ferme sotto il puntatore: un'icona in movimento non si riesce a puntare */
.strip:hover .strip__item { animation-play-state: paused; }

.strip__name {
  position: absolute;
  top: calc(100% + 0.35rem); left: 50%;
  translate: -50% 0;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: var(--mono-label);
  letter-spacing: 0.04em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--swift) var(--ease);
  pointer-events: none;
}

.strip__item:hover .strip__name { opacity: 1; }

/* Colore di marca per ogni icona (generato da Simple Icons) */
.strip__item[data-name="Python"] { --tint: #3776ab; }
.strip__item[data-name="FastAPI"] { --tint: #009688; }
.strip__item[data-name="Claude"] { --tint: #d97757; }
.strip__item[data-name="OpenAI"] { --tint: #412991; }
.strip__item[data-name="LangChain"] { --tint: #1c3c3c; }
.strip__item[data-name="PostgreSQL"] { --tint: #4169e1; }
.strip__item[data-name="TypeScript"] { --tint: #3178c6; }
.strip__item[data-name="React"] { --tint: #61dafb; }
.strip__item[data-name="Next.js"] { --tint: #000000; }
.strip__item[data-name="Docker"] { --tint: #2496ed; }
.strip__item[data-name="Ollama"] { --tint: #000000; }
.strip__item[data-name="Qdrant"] { --tint: #dc244c; }
.strip__item[data-name="pandas"] { --tint: #150458; }
.strip__item[data-name="NumPy"] { --tint: #013243; }
.strip__item[data-name="Supabase"] { --tint: #3fcf8e; }
.strip__item[data-name="Prisma"] { --tint: #2d3748; }
.strip__item[data-name="Playwright"] { --tint: #2ead33; }
.strip__item[data-name="GitHub Actions"] { --tint: #2088ff; }
.strip__item[data-name="Mistral"] { --tint: #fa520f; }
.strip__item[data-name="Hugging Face"] { --tint: #ffd21e; }
.strip__item[data-name="scikit-learn"] { --tint: #f7931e; }
.strip__item[data-name="spaCy"] { --tint: #09a3d5; }
.strip__item[data-name="SQLite"] { --tint: #003b57; }
.strip__item[data-name="MySQL"] { --tint: #4479a1; }
.strip__item[data-name="Airflow"] { --tint: #017cee; }
.strip__item[data-name="Kafka"] { --tint: #231f20; }
.strip__item[data-name="Solr"] { --tint: #d9411e; }
.strip__item[data-name="Node.js"] { --tint: #5fa04e; }
.strip__item[data-name="Express"] { --tint: #000000; }
.strip__item[data-name="Fastify"] { --tint: #000000; }
.strip__item[data-name="Pydantic"] { --tint: #e92063; }
.strip__item[data-name="Selenium"] { --tint: #43b02a; }
.strip__item[data-name="NGINX"] { --tint: #009639; }
.strip__item[data-name="pytest"] { --tint: #0a9edc; }
.strip__item[data-name="Tailwind CSS"] { --tint: #06b6d4; }
.strip__item[data-name="Vite"] { --tint: #646cff; }
.strip__item[data-name="Git"] { --tint: #f05032; }
.strip__item[data-name="Linux"] { --tint: #fcc624; }
.strip__item[data-name="WordPress"] { --tint: #21759b; }
.strip__item[data-name="PHP"] { --tint: #777bb4; }
.strip__item[data-name="jQuery"] { --tint: #0769ad; }
.strip__item[data-name="Jupyter"] { --tint: #f37626; }

/* ---------- 6) INTRO ---------- */
.intro {
  position: relative;
  padding-block: var(--block);
  background: var(--paper);
}

.intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: var(--col-gap);
  align-items: start;
}

.intro__grid .display { grid-column: 1 / -1; }
.intro__label { grid-column: 1 / -1; margin-bottom: 2.5rem; }

.intro__body {
  grid-column: 2;
  display: grid;
  gap: 1.2rem;
  max-width: 42ch;
  margin-top: clamp(2.5rem, 6vh, 4.5rem);
  color: var(--on-paper-muted);
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.2rem);
  line-height: 1.6;
}

/* Cerchio pieno: unico elemento che rompe la griglia. Il riempimento sale dal basso (::before), il magnete lo scrive main.js */
.circle {
  position: relative;
  z-index: 2;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  place-items: center;
  width: var(--circle);
  aspect-ratio: 1;
  border-radius: 50%;
  font-size: var(--text-sm);
  text-align: center;
  will-change: transform;
  transition: color var(--mid) var(--ease),
              transform var(--magnet, var(--mid)) var(--ease),
              scale var(--fast) var(--ease);
}

.circle span {
  position: relative;
  display: block;
  transition: transform var(--magnet, var(--mid)) var(--ease);
}

.circle::before, .pill::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--fill);
  transform: translateY(101%);
  transition: transform var(--mid) var(--ease);
}

.circle:hover::before, .circle:focus-visible::before,
.pill:hover::before, .pill:focus-visible::before { transform: translateY(0); transition-duration: var(--swift); }

.circle:active, .pill:active { scale: 0.96; }

/* Intro: il bordo sinistro del cerchio sull'asse di .intro__body, il centro sul confine con la sezione lavori */
.circle--dark {
  position: absolute;
  left: calc(50% + var(--col-gap) / 2);
  bottom: calc(var(--circle) / -2);
  background: var(--ink);
  color: var(--paper);
  --fill: var(--accent);
}

/* Contatti: seduto sulla hairline */
.circle--accent {
  position: absolute;
  right: clamp(var(--gutter), 12vw, 12rem);
  top: calc(var(--circle) / -2);
  background: var(--accent);
  color: var(--paper);
  --fill: var(--ink);
}

/* ---------- 7) LAVORI ---------- */
.work {
  position: relative;
  padding-block: var(--block);
  background: var(--paper);
}

/* Tra due sezioni dello stesso colore il padding non si somma */
.intro + .work { padding-top: calc(var(--block) * 0.6); }

.work__list {
  margin-top: 2.5rem;
  border-top: 1px solid var(--hairline-dark);
}

.work__row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) auto auto;
  align-items: baseline;
  gap: 0.9rem clamp(1rem, 3vw, 3rem);
  padding-block: clamp(1.4rem, 3.2vh, 2.4rem);
  border-bottom: 1px solid var(--hairline-dark);
  position: relative;
}

/* Il brand della riga vive in tre variabili; a riposo nessuna è usata */
.work__row[data-brand="espiu"]    { --brand: var(--brand-espiu);    --brand-deep: var(--brand-espiu-deep); }
.work__row[data-brand="enernext"] { --brand: var(--brand-enernext); --brand-deep: var(--brand-enernext-deep); }
.work__row[data-brand="its"]      { --brand: var(--brand-its);      --brand-deep: var(--brand-its-deep); }
.work__row[data-brand="personale"], .work__row:not([data-brand]) { --brand: var(--ink); --brand-deep: var(--ink); }

/* Barra di 3px nel colore vivo del brand: decorativa, il testo prende il tono scuro (AA su bianco) */
.work__row::before {
  content: "";
  position: absolute;
  /* Fuori dal testo: a left:0 la barra tagliava la prima cifra di .work__index */
  left: -0.9rem; top: 0; bottom: -1px;
  width: 3px;
  background: var(--brand);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--mid) var(--ease);
}
.work__row:hover::before, .work__row:focus-visible::before { transform: scaleY(1); transform-origin: top; transition-duration: var(--swift); }

/* Le transition stanno sui figli: .reveal sulla riga sostituirebbe quella della riga */
.work__index {
  grid-column: 1; grid-row: 1;
  font-family: var(--mono);
  font-size: var(--mono-label);
  letter-spacing: 0.12em;
  color: var(--on-paper-muted);
  transition: color var(--swift) var(--ease), transform var(--mid) var(--ease);
}

.work__name {
  grid-column: 2; grid-row: 1;
  font-size: clamp(1.9rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--ink);
  transition: color var(--swift) var(--ease), transform var(--mid) var(--ease);
}

.work__meta {
  grid-column: 3; grid-row: 1;
  font-family: var(--mono);
  font-size: var(--mono-data);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--on-paper-muted);
  text-align: right;
  transition: transform var(--mid) var(--ease);
}

.work__status { grid-column: 4; grid-row: 1; justify-self: end; transition: color var(--swift) var(--ease); }

.work__note {
  grid-column: 2 / 4; grid-row: 2;
  max-width: 52ch;
  color: var(--on-paper-muted);
  line-height: 1.45;
  transition: transform var(--mid) var(--ease);
}

/* Hover: nome e nota scivolano a destra, lo stack a sinistra, indice e stato prendono il tono scuro del brand; niente reflow */
.work__row:hover .work__name, .work__row:focus-visible .work__name,
.work__row:hover .work__note, .work__row:focus-visible .work__note { transform: translateX(1rem); }
.work__row:hover .work__meta, .work__row:focus-visible .work__meta { transform: translateX(-0.75rem); }
.work__row:hover .work__index, .work__row:focus-visible .work__index { color: var(--brand-deep); }
.work__row:hover .work__status, .work__row:focus-visible .work__status { color: var(--brand-deep); }

/* Come nel riferimento: quando ne passi uno, gli altri si spengono (solo con puntatore vero: su touch :hover resta appiccicato) */
@media (hover: hover) {
  .work__list:hover .work__row:not(:hover) .work__name,
  .work__list:has(.work__row:focus-visible) .work__row:not(:focus-visible) .work__name { color: var(--on-paper-muted); }
}

/* Dopo il blocco che spegne le altre: la riga attiva prende il tono scuro del brand */
.work__list .work__row:hover .work__name, .work__list .work__row:focus-visible .work__name { color: var(--brand-deep); }

/* Anteprima agganciata al cursore: il posizionatore riceve solo il transform per frame (nessuna transition, o il lerp si impasta) */
.preview {
  position: fixed;
  top: 0; left: 0;
  z-index: 30;
  pointer-events: none;
  will-change: transform;
}

.preview__card {
  position: relative;
  width: 18rem;
  aspect-ratio: 4 / 5;
  border-radius: 2px;
  overflow: hidden;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.86);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

/* Entra morbida, sparisce svelta */
.preview.is-shown .preview__card {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  transition-duration: 0.45s;
}

/* Pila di copertine, una per riga: cambiare riga fa scorrere la pila */
.preview__track { height: 100%; transition: transform var(--mid) var(--ease); }

.preview__slide {
  position: relative;
  height: 100%;
  padding: 1.3rem 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.8rem;
  color: var(--paper);
}

.preview__slide--espiu    { background: var(--brand-espiu-deep); }     /* bianco 8.65:1 */
.preview__slide--enernext { background: var(--brand-enernext-deep); }  /* bianco 11.98:1 */
.preview__slide--its      { background: var(--brand-its-deep); }       /* bianco 6.61:1 */
.preview__slide--personale { background: var(--ink); }

/* Logo dell'azienda su un chip chiaro: i loghi sono per fondi chiari, mai deformati */
.preview__logo {
  position: relative;
  align-self: flex-start;
  display: grid;
  place-items: center;
  height: 2.4rem;
  padding-inline: 0.7rem;
  border-radius: 4px;
  background: var(--paper);
}
.preview__logo img { height: 1.2rem; width: auto; max-width: 8rem; object-fit: contain; }

/* Righe sottili in diagonale: danno materia alla campitura senza fare rumore */
.preview__slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-35deg, transparent 0 14px, rgba(255, 255, 255, 0.06) 14px 15px);
  pointer-events: none;
}

.preview__index {
  position: relative;
  font-family: var(--mono);
  font-size: var(--mono-label);
  letter-spacing: 0.12em;
}

.preview__label {
  position: relative;
  padding-top: 0.9rem;
  border-top: 1px solid var(--hairline-light-strong);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.12;
  text-wrap: balance;
}

/* In alto a destra: al centro copriva il logo del brand. Il transform lo scrive main.js */
.preview__cta {
  position: absolute;
  top: 1.1rem; right: 1.1rem;
  display: grid;
  place-items: center;
  width: 5rem; aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  color: var(--paper);
  font-size: var(--text-sm);
  will-change: transform;
}

/* ---------- 8) PERCORSO ---------- */
.path {
  padding-block: var(--block) calc(var(--block) * 1.2);
  background: var(--stone);
  color: var(--ink);
}

/* La lista sporge di 1rem per lato: le voci in hover si riempiono oltre il testo, la hairline in alto ha la stessa larghezza delle loro */
.path__list {
  margin-top: 2.5rem;
  margin-inline: -1rem;
  border-top: 1px solid var(--hairline-stone);
}

.path__group { margin-top: 2.5rem; }
.path__group + .path__list { margin-top: 0.9rem; }

.path__item {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: 10rem minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 3rem);
  align-items: baseline;
  padding-block: clamp(1.8rem, 4vh, 3rem);
  padding-inline: 1rem;
  border-bottom: 1px solid var(--hairline-stone);
  border-radius: 4px;
}

/* Il brand della voce: tono scuro per il fondo in hover, chip chiaro dietro il logo. Il chip prende il colore del brand solo se il logo ci resta intero:
   il verde Espiù cancellerebbe l'accento verde del logo, sull'azzurro EnerNext la stella blu sta a 2.94:1; il navy ITS sul giallo sta a 8.54:1 */
.path__item[data-brand="espiu"]    { --brand-deep: var(--brand-espiu-deep);    --brand-chip: var(--paper); }
.path__item[data-brand="enernext"] { --brand-deep: var(--brand-enernext-deep); --brand-chip: var(--paper); }
.path__item[data-brand="its"]      { --brand-deep: var(--brand-its-deep);      --brand-chip: var(--brand-its-chip); }
.path__item[data-brand="personale"], .path__item:not([data-brand]) { --brand-deep: var(--ink); --brand-chip: var(--paper); }

/* Il fondo di brand vive in un ::before con la sua transition: .reveal sulla voce sostituirebbe quella della voce */
.path__item::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--brand-deep);
  opacity: 0;
  transition: opacity var(--mid) var(--ease);
}

/* Il colore del testo lo animano i figli, per lo stesso motivo */
.path__item > *, .path__item .micro { transition: color var(--mid) var(--ease); }

/* In hover la voce si inverte: fondo scuro del brand e testo bianco (AA: 8.65 / 11.98 / 6.61); a riposo è pietra. Solo con puntatore vero */
@media (hover: hover) {
  .path__item:hover { color: var(--paper); --micro: var(--paper); }
  .path__item:hover::before { opacity: 1; transition-duration: var(--swift); }
  .path__item:hover > *, .path__item:hover .micro { transition-duration: var(--swift); }
  .path__item:hover .path__logo { background: var(--brand-chip, var(--paper)); }
}

.path__years {
  font-family: var(--mono);
  font-size: var(--mono-data);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.path__role h3 {
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.path__role p { margin-top: 0.35rem; }

.path__org { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }

/* Chip chiaro dietro il logo: i loghi sono per fondi chiari; altezza fissa, mai deformati */
.path__logo {
  display: grid;
  place-items: center;
  height: 2rem;
  padding-inline: 0.55rem;
  border-radius: 4px;
  background: var(--paper);
  transition: background-color var(--swift) var(--ease), transform var(--swift) var(--ease);
}
.path__logo img { height: 1rem; width: auto; max-width: 7rem; object-fit: contain; }

/* Il chip è un link al sito dell'azienda: si solleva appena sotto il puntatore */
.path__logo { transform: translateY(0); }
.path__logo:hover, .path__logo:focus-visible { transform: translateY(-2px); }

.path__note { max-width: 42ch; line-height: 1.55; }

/* Il voto: dato in mono grande, con la sua etichetta sopra */
.path__grade {
  display: grid;
  gap: 0.2rem;
  margin-bottom: 0.9rem;
  font-family: var(--mono);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

/* Stessa spina dorsale del percorso: 10rem di etichetta + tre colonne che partono dove parte il ruolo */
.tools {
  display: grid;
  grid-template-columns: 10rem repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 3vw, 3rem);
  margin-top: clamp(3rem, 8vh, 5rem);
}

.tools__col p:not(.micro) {
  margin-top: 0.8rem;
  line-height: 1.55;
  max-width: 34ch;
}

/* ---------- 9) CONTATTI ---------- */
.contact {
  padding-block: var(--block);
  background: var(--ink);
  color: var(--paper);
}

.contact__label { margin-bottom: 2.5rem; }

/* Hairline + cerchio: il margine sotto lascia spazio alla metà inferiore del cerchio */
.contact__seam {
  position: relative;
  margin-block: clamp(2.5rem, 6vh, 4rem) calc(var(--circle) / 2 + 1.5rem);
}

.contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.pills { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Pillola: stesso riempimento dal basso dei cerchi (il ::before è dichiarato insieme a .circle) */
.pill {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-block;
  padding: 0.95rem 1.7rem;
  border: 1px solid var(--hairline-light);
  border-radius: 999px;
  font-size: var(--text-sm);
  --fill: var(--paper);
  transition: color var(--mid) var(--ease), border-color var(--mid) var(--ease), scale var(--fast) var(--ease);
}

.pill:hover, .pill:focus-visible { color: var(--ink); border-color: var(--paper); transition-duration: var(--swift); }

/* ---------- 10) FOOTER ---------- */
.footer {
  padding-block: clamp(2.5rem, 6vh, 4rem);
  background: var(--ink);
  color: var(--paper);
  border-top: 1px solid var(--hairline-light);
}

/* Due gruppi asimmetrici: micro-dati a sinistra, social a destra */
.footer__grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  font-size: var(--text-sm);
}

.footer__meta { display: flex; flex-wrap: wrap; gap: clamp(2rem, 5vw, 5rem); }

.footer__grid p:not(.micro) { margin-top: 0.5rem; }

.footer__socials { text-align: right; }
.footer__socials a { margin-left: 1.2rem; color: var(--on-ink-muted); transition: color var(--swift) var(--ease); }
.footer__socials a:first-child { margin-left: 0; }
.footer__socials a:hover, .footer__socials a:focus-visible { color: var(--paper); }

.footer__clock { font-variant-numeric: tabular-nums; }

/* ---------- ANIMAZIONI D'INGRESSO ---------- */

/* Righe che salgono da dietro una maschera, una dopo l'altra */
.reveal-lines .line { display: block; overflow: hidden; padding-bottom: 0.14em; margin-bottom: -0.14em; }

.reveal-lines .line > span {
  display: block;
  transform: translateY(115%);
  transition: transform var(--slow) var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}

.reveal-lines.is-visible .line > span { transform: translateY(0); }

/* Non usare .reveal su elementi con una propria transition: la shorthand la sostituisce. Le transition vanno sui figli. */
.reveal {
  opacity: 0;
  transform: translateY(1.2rem);
  transition: opacity var(--reveal) var(--ease), transform var(--reveal) var(--ease);
  transition-delay: calc(var(--i, 0) * 70ms);
}

.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 11) RESPONSIVE ---------- */
@media (max-width: 1080px) {
  .intro__grid { grid-template-columns: 1fr; }
  .intro__body { grid-column: 1; }
  .circle--dark { left: auto; right: var(--gutter); }
  .path__item { grid-template-columns: 8rem minmax(0, 1fr); }
  .path__note { grid-column: 2; max-width: none; }
  .tools { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .tools__label { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .topbar__nav { display: none; }

  /* Senza la nav in barra il bottone è l'unica via al menu: sempre visibile e più piccolo */
  .menu-btn { width: 60px; height: 60px; top: 1.25rem; visibility: visible; opacity: 1; transform: scale(1); pointer-events: auto; }
  .menu { padding-top: 6rem; }

  .hero__stage, .hero.has-portrait .hero__stage {
    grid-template-columns: 1fr;
    align-content: end;
    justify-items: start;
    gap: 2.5rem;
    padding: 6rem var(--gutter) 2rem;
  }

  .hero__aside, .hero__right, .hero.has-portrait .hero__right { grid-column: 1; }
  .hero.has-portrait .hero__portrait { grid-column: 1; order: 1; height: min(38vh, 20rem); justify-self: center; }
  .hero__right, .hero.has-portrait .hero__right { order: 2; justify-self: start; align-self: auto; }
  .hero__role { padding-top: 2.6rem; }
  .hero__index { display: none; }

  .hero__aside { order: 3; align-self: auto; width: 100%; gap: 1.6rem; }
  .hero__pill { margin-bottom: 0; }

  .work__row { grid-template-columns: 2.5rem minmax(0, 1fr); }
  .work__note { grid-column: 2; grid-row: 2; }
  .work__meta { grid-column: 2; grid-row: 3; text-align: left; }
  /* Lo stato (privato / GitHub) resta visibile: sotto lo stack, in colonna con nome e nota */
  .work__status { grid-column: 2; grid-row: 4; justify-self: start; }
  .work__row:hover .work__name, .work__row:focus-visible .work__name,
  .work__row:hover .work__note, .work__row:focus-visible .work__note { transform: translateX(0.5rem); }
  .work__row:hover .work__meta, .work__row:focus-visible .work__meta { transform: none; }

  .tools { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .path__list { margin-inline: -0.75rem; }
  .path__item { grid-template-columns: 1fr; padding-inline: 0.75rem; }
  .path__note { grid-column: 1; }
  .contact__row { flex-direction: column; align-items: flex-start; }
  .footer__grid { flex-direction: column; align-items: flex-start; }
  .footer__socials { text-align: left; }
  .footer__socials a { margin-left: 0; margin-right: 1.2rem; }
}

/* Il cursore-anteprima non ha senso senza un puntatore fine */
@media (hover: none), (pointer: coarse) {
  .preview { display: none; }
}

/* ---------- 12) MOTION RIDOTTA ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }

  .reveal { opacity: 1; transform: none; }
  .reveal-lines .line > span { transform: none; }
  .hero__meta, .hero__pill, .hero__role, .hero__index { opacity: 1; transform: none; transition-delay: 0s; }
  .menu.is-open .micro, .menu.is-open .menu__list li, .menu.is-open .menu__socials { transition-delay: 0s; }
  /* Senza animazione le icone resterebbero ammucchiate all'inizio del tracciato: si distribuiscono a mano */
  .strip__item {
    animation: none;
    offset-distance: calc(var(--i) / var(--n) * 100%);
  }
}