/* ============================================================
   LUCA NASI — PORTFOLIO
   Palette: viola + nero. Tipografia teatrale/cinematica.
   Multi-page con cross-fade tra pagine.
   ============================================================ */

@font-face {
  font-family: 'Liuk Serif';
  src: url('/font/liuk-serif.woff2') format('woff2');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Liuk Serif';
  src: url('/font/liuk-serif-italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

:root {
  /* Palette: nero con base viola, sfumature dal lilla al viola scuro */
  --bg:           #0a0512;    /* nero base, tinta viola */
  --bg-deep:      #050208;    /* nero più profondo */
  --bg-soft:      #1a0e2a;    /* viola scuro (gradient superiore) */
  --bg-card:      #2a1842;    /* viola medio per elevations */

  --fg:           #ebe5ed;    /* bianco lilla */
  --fg-mid:       #a895b3;    /* lilla desaturato (eyebrows, meta) */
  --fg-dim:       #5d4d6a;    /* prugna scuro (bordi, copyright) */

  --accent:        #b378d4;   /* lilla brillante (hover, link) */
  --accent-bright: #cca4cd;   /* lilla pallido (= sfondo logo) */
  --accent-deep:   #76348b;   /* viola scuro (= ingranaggio logo) */

  --border:       rgba(179, 120, 212, 0.12);
  --border-strong:rgba(179, 120, 212, 0.24);

  /* Tipografia */
  --font-display: 'Liuk Serif', Georgia, serif;       /* tocchi eleganti/corsivi */
  --font-body:    'Space Grotesk', -apple-system, system-ui, sans-serif;
  --font-title:   'Liuk Serif', Georgia, serif;       /* titoli (serif auto-ospitato) */

  /* Spaziatura */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;
  --space-16: 8rem;

  /* Container */
  --maxw-text:    640px;
  --maxw-section: 900px;
  --maxw-photo:   1400px;

  --ease:   cubic-bezier(0.22, 1, 0.36, 1);
  --t-slow: 0.7s;
  --t-med:  0.4s;
  --t-fast: 0.2s;

  /* Usate dal player video */
  --radius-sm: 14px;
  --t-faint:   rgba(255, 255, 255, 0.08);
}

/* ============================================================
   Reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;          /* niente zoom automatico del testo su iOS in landscape */
  text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  background:
    radial-gradient(ellipse at top, var(--bg-soft) 0%, var(--bg) 55%, var(--bg-deep) 100%);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;

  /* Fade-in al caricamento, fade-out durante navigazione (script.js) */
  opacity: 1;
  transition: opacity 0.45s var(--ease);
}
body.fade-out { opacity: 0; }
body.is-loading { opacity: 0; }

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-med) var(--ease);
}

button {
  background: none;
  border: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  z-index: 1000;
}
.skip-link:focus { top: 1rem; }

/* ============================================================
   NAV — header sticky con logo + pagine
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: rgba(10, 5, 18, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 0.5px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 4px;
}

.nav-logo-name {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--fg-mid);
}

.nav-logo:hover .nav-logo-name { color: var(--fg); }

.nav-pages {
  display: flex;
  gap: var(--space-4);
  list-style: none;
}

.nav-pages a {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--fg-mid);
  position: relative;
  padding: var(--space-1) 0;
}

.nav-pages a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease);
}

.nav-pages a:hover { color: var(--fg); }
.nav-pages a:hover::after { transform: scaleX(1); }

.nav-pages a.active {
  color: var(--accent-bright);
}
.nav-pages a.active::after {
  transform: scaleX(1);
  background: var(--accent-bright);
}

/* ============================================================
   PAGE INTRO — header standard per chi-sono / progetti / contatti
   ============================================================ */
.page-intro {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: var(--space-16) var(--space-4) var(--space-8);
  text-align: left;
}

.page-intro .eyebrow {
  display: block;
  margin-bottom: var(--space-2);
}

.page-title {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: clamp(3rem, 7vw, 5rem);
  line-height: 1.02;
  letter-spacing: 0;
  color: var(--fg);
  margin-bottom: var(--space-3);
}
.page-title em {
  font-style: italic;
  color: var(--accent-bright);
  font-weight: 500;
}

.page-deck {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.375rem;
  color: var(--fg-mid);
  max-width: var(--maxw-text);
}

/* ============================================================
   HERO (homepage) — logo card grande centrale come signature
   ============================================================ */
.hero {
  min-height: calc(100vh - 64px);   /* tolgo l'altezza del nav */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  text-align: center;
}
/* viewport dinamico: evita il "salto" con la barra indirizzi mobile */
@supports (height: 100svh) {
  .hero { min-height: calc(100svh - 64px); }
}

.hero-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
}

.hero-logo {
  width: min(380px, 65vw);
  height: min(380px, 65vw);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    0 0 0 0.5px var(--border-strong),
    0 40px 110px -25px rgba(118, 52, 139, 0.55),
    0 0 240px -20px rgba(179, 120, 212, 0.40),
    0 0 460px 30px rgba(204, 164, 205, 0.20);
  animation: heroLogoIn 1.4s var(--ease) 0.15s both;
}

.hero-logo img {
  width: 100%;
  height: 100%;
  display: block;
}

@keyframes heroLogoIn {
  from { opacity: 0; transform: translateY(24px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

.hero-name {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: clamp(3rem, 7vw, 4.75rem);
  letter-spacing: 0;
  line-height: 1;
  color: var(--fg);
  animation: heroFadeIn 1.4s var(--ease) 0.5s both;
}
.hero-name em {
  font-style: italic;
  font-weight: 500;
  color: var(--accent-bright);
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--fg-mid);
  margin-top: var(--space-3);
  animation: heroFadeIn 1.4s var(--ease) 0.8s both;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   BIO (chi-sono.html)
   ============================================================ */
.bio {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 0 var(--space-4) var(--space-16);
}

.bio-body {
  max-width: var(--maxw-text);
}

.bio-body p {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 400;
  line-height: 1.75;
  color: var(--fg);
  margin-bottom: var(--space-4);
}

.bio-lead {
  font-size: 1.35rem !important;
  font-style: normal;
  color: var(--fg) !important;
}
.bio-lead::first-letter {
  font-size: 1.6em;
  color: var(--accent-bright);
  float: left;
  line-height: 0.85;
  margin-right: 0.08em;
  margin-top: 0.05em;
  font-style: normal;
}

.bio-coda {
  font-size: 1.125rem !important;
  color: var(--fg-mid) !important;
  border-top: 0.5px solid var(--border);
  padding-top: var(--space-4);
  margin-top: var(--space-6);
}

/* ============================================================
   PROGETTI list (progetti.html)
   ============================================================ */
.progetti {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 0 var(--space-4) var(--space-16);
}

.progetti-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.progetti-link {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: 22px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-4);
  align-items: baseline;
  padding: var(--space-8) var(--space-4);
  transition:
    padding-left var(--t-med) var(--ease),
    color var(--t-med) var(--ease);
  color: var(--fg);
}

/* testo sopra l'anteprima */
.progetti-link > span:not(.progetti-thumb) {
  position: relative;
  z-index: 1;
}

.progetti-link:hover {
  padding-left: var(--space-6);
  color: var(--accent-bright);
}

.progetti-num {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.32em;
  color: var(--accent);
  align-self: center;
}

.progetti-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.progetti-title {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-style: italic;
  line-height: 1.05;
}

.progetti-meta {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-mid);
}

.progetti-arrow {
  font-family: var(--font-body);
  font-size: 1.25rem;
  color: var(--fg-mid);
  align-self: center;
  transition: transform var(--t-med) var(--ease), color var(--t-med) var(--ease);
}

.progetti-link:hover .progetti-arrow {
  transform: translateX(8px);
  color: var(--accent-bright);
}

/* ============================================================
   CONTATTI (contatti.html)
   ============================================================ */
.contatti {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: 0 var(--space-4) var(--space-16);
}

.contatti-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: var(--maxw-text);
}

.contatti-list li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 0.5px solid var(--border);
  align-items: center;
}

.contatti-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}

.contatti-list a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-style: italic;
  color: var(--fg);
}

.contatti-list a:hover {
  color: var(--accent-bright);
}

.contatti-location {
  margin-top: var(--space-8);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--fg-mid);
}

/* ============================================================
   FOOTER (presente su tutte le pagine)
   ============================================================ */
.site-footer {
  max-width: var(--maxw-section);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  border-top: 0.5px solid var(--border);
}

.site-footer a:hover { color: var(--fg-mid); }

/* ============================================================
   PROJECT PAGE (ananas.html)
   ============================================================ */
.project {
  max-width: var(--maxw-photo);
  margin: 0 auto;
}

.project-header {
  max-width: var(--maxw-text);
  margin: 0 auto;
  padding: var(--space-16) var(--space-4) var(--space-12);
  text-align: center;
}

.project-meta-top {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-6);
}

.project-meta-top span:first-child::after {
  content: "·";
  margin-left: var(--space-4);
  color: var(--fg-dim);
}

.project-title {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: clamp(3.5rem, 9vw, 6rem);
  line-height: 1.02;
  letter-spacing: -0.005em;
  margin-bottom: var(--space-3);
}

.project-subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.25rem, 2.2vw, 1.625rem);
  color: var(--accent-bright);
  font-weight: 400;
  margin-bottom: var(--space-8);
}

.project-info {
  text-align: left;
  max-width: var(--maxw-text);
  margin: 0 auto var(--space-8);
}

.project-info p {
  font-family: var(--font-body);
  font-size: 1.075rem;
  line-height: 1.75;
  color: var(--fg);
  margin-bottom: var(--space-3);
}

.project-data {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 0.5px solid var(--border);
  text-align: left;
}

.project-data div {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.project-data dt {
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}
.project-data dd {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--fg);
}

.project-photos {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  padding: 0 var(--space-4) var(--space-16);
}

.photo {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s var(--ease), transform 1.2s var(--ease);
}
.photo.in-view {
  opacity: 1;
  transform: translateY(0);
}

.photo img {
  width: 100%;
  height: auto;
  display: block;
  box-shadow:
    0 0 0 0.5px rgba(179, 120, 212, 0.06),
    0 30px 80px -20px rgba(0, 0, 0, 0.9);
}

.photo figcaption {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--fg-mid);
}

.photo-num {
  color: var(--accent-bright);
}

.photo-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.125rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--fg);
}

.project-footer {
  padding: var(--space-12) var(--space-4);
  text-align: center;
  border-top: 0.5px solid var(--border);
}

.project-footer-text {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--accent-bright);
  margin-bottom: var(--space-6);
}

.project-footer-nav {
  display: flex;
  justify-content: space-between;
  max-width: var(--maxw-text);
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.project-footer-nav a { color: var(--fg-mid); }
.project-footer-nav a:hover { color: var(--accent-bright); }

/* ============================================================
   GENERIC eyebrow
   ============================================================ */
.eyebrow {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 720px) {
  .nav { padding: var(--space-2) var(--space-3); }
  .nav-pages { gap: var(--space-3); }
  .nav-pages a { font-size: 0.65rem; letter-spacing: 0.22em; }
  .nav-logo-name { display: none; }
  .page-intro { padding: var(--space-12) var(--space-3) var(--space-6); }
  .bio, .progetti, .contatti { padding: 0 var(--space-3) var(--space-12); }
  .sw-section { padding: 0 var(--space-3) var(--space-12); }
  .progetti-list { gap: var(--space-3); }
  .progetti-link { padding: var(--space-6) var(--space-3); }
  .progetti-link:hover { padding-left: var(--space-4); }
  .project-header { padding: var(--space-12) var(--space-3) var(--space-8); }
  .project-photos { gap: var(--space-12); padding: 0 var(--space-2) var(--space-12); }
  .bio-body p { font-size: 1.125rem; }
  .bio-lead { font-size: 1.25rem !important; }
  .contatti-list li { grid-template-columns: 100px 1fr; }
}

@media (max-width: 480px) {
  /* nav su due righe: logo sopra, pagine distribuite sotto */
  .nav { flex-wrap: wrap; row-gap: var(--space-2); }
  .nav-pages {
    width: 100%;
    justify-content: space-between;
    gap: var(--space-1);
  }
  .nav-pages a { font-size: 0.62rem; letter-spacing: 0.16em; }

  .contatti-list li {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
  .contatti-list a { font-size: 1.3rem; word-break: break-word; }

  .project-header { padding: var(--space-8) var(--space-3) var(--space-6); }
  .project-title { font-size: clamp(2.5rem, 13vw, 4rem); }
  .project-subtitle { margin-bottom: var(--space-6); }
  .project-photos { padding: 0 var(--space-2) var(--space-8); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .photo { opacity: 1; transform: none; }
}

:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 4px;
}

/* ============================================================
   PROGETTI THUMB — anteprima sfocata che si fa nitida all'hover
   ============================================================ */
.progetti-thumb {
  position: absolute;
  inset: 0;
  z-index: 0;
  transform: scale(1.08);
  filter: blur(16px) saturate(0.8) brightness(0.6);
  /* bordi sfumati: l'immagine svanisce verso i lati */
  -webkit-mask-image: radial-gradient(125% 140% at 50% 50%, #000 52%, transparent 100%);
          mask-image: radial-gradient(125% 140% at 50% 50%, #000 52%, transparent 100%);
  transition: filter var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
.progetti-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(10, 5, 18, 0.92) 0%, rgba(10, 5, 18, 0.6) 55%, rgba(10, 5, 18, 0.4) 100%);
  transition: opacity var(--t-slow) var(--ease);
}
.pt-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.1s var(--ease);
}
.pt-img.is-on { opacity: 1; }

.progetti-link:hover .progetti-thumb {
  filter: blur(0) saturate(1.12) brightness(1.12);
  transform: scale(1.02);
}
.progetti-link:hover .progetti-thumb::after { opacity: 0.3; }

@media (prefers-reduced-motion: reduce) {
  .progetti-thumb { transition: filter var(--t-med) var(--ease); }
}