/* =========================================================================
   NZ · Portfolio fotografico — stile minimal (ispirazione: store essenziale
   in bianco, tipografia piccola tutta maiuscola, molto spazio bianco)
   ========================================================================= */

:root{
  --bg:#ffffff;
  --ink:#0a0a0a;
  --muted:#8a8a8a;
  --line:#e7e7e7;
  --gap:clamp(14px,2vw,28px);
  --font:"Helvetica Neue",Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{ -webkit-text-size-adjust:100% }
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:12px;
  line-height:1.5;
  letter-spacing:.04em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}

.upper{text-transform:uppercase}

/* ---------- Intro firma (sfondo bianco, firma nera) ---------- */
.intro-overlay{
  position:fixed;inset:0;z-index:9999;
  background:#ffffff;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.sig-wrap{position:relative;width:clamp(260px,58vw,600px)}
.sig-wrap .sig{
  width:100%;display:block;
  /* rivelazione da sinistra a destra: parte tutta nascosta */
  clip-path:inset(0 100% 0 0);
  animation:sigDraw 3.6s cubic-bezier(.6,.03,.35,1) .4s forwards;
  transition:opacity .5s ease, transform .5s ease;
}
@keyframes sigDraw{ to{clip-path:inset(0 0 0 0)} }
/* la firma sparisce prima che si riveli il sito */
.intro-overlay.sig-out .sig{opacity:0;transform:scale(.985)}
@media (prefers-reduced-motion:reduce){
  .sig-wrap .sig{animation:none;clip-path:none}
}

/* ---------- Header / nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(16px,3vw,34px);
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
  text-transform:uppercase;
  font-size:11px;letter-spacing:.14em;
}
.brand{font-weight:700;letter-spacing:.28em;font-size:14px}
.nav-links{display:flex;gap:clamp(14px,2.4vw,30px)}
.nav-links a{color:var(--muted);transition:color .2s}
.nav-links a:hover,.nav-links a.now{color:var(--ink)}
.nav .admin-link{color:var(--muted);font-size:10px;letter-spacing:.2em}

/* ---------- Layout ---------- */
main{padding:clamp(20px,4vw,48px) clamp(16px,3vw,34px) 80px}
.tag{
  text-align:center;color:var(--muted);text-transform:uppercase;
  letter-spacing:.34em;font-size:10px;margin:8px 0 clamp(26px,4vw,54px)
}

/* ---------- Home: rail album + gallery ---------- */
.home-stage{
  display:flex;align-items:flex-start;gap:clamp(14px,2.5vw,40px);
  max-width:1500px;margin:0 auto;
}
.home-stage.no-albums .album-rail{display:none}

/* Rail verticale a trascinamento (solo con piu' album) */
.album-rail{
  flex:none;width:74px;
  position:sticky;top:120px;
  display:flex;flex-direction:column;align-items:center;
  user-select:none;-webkit-user-select:none;touch-action:none;
}
.album-rail .rail-name{
  writing-mode:vertical-rl;transform:rotate(180deg);
  text-transform:uppercase;letter-spacing:.24em;font-size:11px;
  color:var(--ink);margin-bottom:16px;min-height:70px;text-align:center;
  transition:opacity .3s;
}
.album-rail .track{
  position:relative;width:2px;background:var(--line);
  border-radius:2px;flex:none;
  height:clamp(150px,26vh,230px);
  cursor:grab;
}
.album-rail .track.drag{cursor:grabbing}
.album-rail .track .fill{
  position:absolute;left:0;top:0;width:100%;background:var(--ink);
  border-radius:2px;transition:height .45s cubic-bezier(.2,.7,.2,1);
}
.album-rail .dot{
  position:absolute;left:50%;width:9px;height:9px;border-radius:50%;
  background:#fff;border:1.5px solid var(--muted);
  transform:translate(-50%,-50%);transition:all .3s;cursor:pointer;
}
.album-rail .dot.on{background:var(--ink);border-color:var(--ink);transform:translate(-50%,-50%) scale(1.25)}
.album-rail .handle{
  position:absolute;left:50%;width:22px;height:22px;border-radius:50%;
  background:var(--ink);transform:translate(-50%,-50%);
  box-shadow:0 2px 10px rgba(0,0,0,.18);
  transition:top .45s cubic-bezier(.2,.7,.2,1);
  display:flex;align-items:center;justify-content:center;
}
.album-rail .handle::before{content:"";width:6px;height:6px;border-radius:50%;background:#fff}
.album-rail .hint{
  margin-top:14px;text-transform:uppercase;letter-spacing:.18em;font-size:8px;
  color:var(--muted);text-align:center;line-height:1.6;
}
.album-rail .hint .ar{display:block;font-size:12px;margin-top:2px;animation:railHint 1.8s ease-in-out infinite}
@keyframes railHint{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(4px);opacity:1}}

/* ---------- Gallery grid ---------- */
.grid{
  flex:1;min-width:0;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(24px,3vw,54px) var(--gap);
}
/* transizioni cambio album */
.grid .cell{
  transition:opacity .4s ease, transform .5s cubic-bezier(.2,.7,.2,1);
}
.grid.leaving .cell{opacity:0;transform:translateY(16px) scale(.985)}
.grid.entering .cell{opacity:0;transform:translateY(22px) scale(.985)}
@media(max-width:640px){
  .home-stage{flex-direction:column}
  .album-rail{
    position:static;width:100%;flex-direction:row;top:auto;
    justify-content:center;gap:14px;margin-bottom:20px;
  }
  .album-rail .rail-name{writing-mode:horizontal-tb;transform:none;margin:0 8px 0 0;min-height:0}
  .album-rail .track{width:clamp(120px,50vw,220px);height:2px}
  .album-rail .hint{display:none}
}
@media(max-width:900px){ .grid{grid-template-columns:repeat(2,1fr)} }
@media(max-width:560px){ .grid{grid-template-columns:1fr;max-width:460px} }

.cell{cursor:pointer;text-align:center}
.cell .frame{
  overflow:hidden;background:#f4f4f4;
  aspect-ratio:4/5;display:flex;align-items:center;justify-content:center;
}
.cell img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.2,.7,.2,1),opacity .6s;
}
.cell:hover img{transform:scale(1.03)}
.cell .cap{
  margin-top:12px;text-transform:uppercase;letter-spacing:.16em;font-size:10px;
}
.cell .cap .t{display:block;color:var(--ink)}
.cell .cap .s{display:block;color:var(--muted);margin-top:3px}

.empty{grid-column:1/-1;text-align:center;color:var(--muted);
  text-transform:uppercase;letter-spacing:.2em;padding:60px 0}

/* ---------- Lightbox / detail ---------- */
.lb{
  position:fixed;inset:0;z-index:100;display:none;
  background:rgba(255,255,255,.98);
  overflow:auto;
}
.lb.open{display:block;animation:fade .35s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb-close{
  position:fixed;top:16px;right:22px;font-size:22px;line-height:1;
  cursor:pointer;color:var(--ink);background:none;border:0;z-index:2;
}
.lb-inner{
  max-width:760px;margin:0 auto;padding:70px 20px 90px;
  display:flex;flex-direction:column;align-items:center;
}
.lb-inner img{max-height:76vh;width:auto;margin:0 auto}
.lb-title{margin-top:26px;text-transform:uppercase;letter-spacing:.2em;font-size:12px}
.lb-specs{
  margin-top:14px;color:#333;white-space:pre-line;text-align:center;
  letter-spacing:.08em;line-height:1.9;font-size:11px;
  text-transform:uppercase;
}

/* ---------- Chi sono ---------- */
.about{
  max-width:900px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);
  align-items:start;
}
@media(max-width:680px){ .about{grid-template-columns:1fr;max-width:460px} }
.about h1{
  text-transform:uppercase;letter-spacing:.24em;font-size:13px;
  font-weight:700;margin-bottom:18px;
}
.about p{white-space:pre-line;color:#333;line-height:2;letter-spacing:.05em;font-size:12px}
.about .portrait{background:#f4f4f4;aspect-ratio:4/5;object-fit:cover;width:100%}

/* ---------- Contatti ---------- */
.contact{max-width:460px;margin:0 auto;text-align:center}
.contact h1{text-transform:uppercase;letter-spacing:.24em;font-size:13px;font-weight:700;margin-bottom:12px}
.contact .intro{color:var(--muted);text-transform:uppercase;letter-spacing:.14em;font-size:10px;margin-bottom:30px}
.field{margin-bottom:16px;text-align:left}
.field label{display:block;text-transform:uppercase;letter-spacing:.16em;font-size:9px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea{
  width:100%;border:0;border-bottom:1px solid var(--ink);background:none;
  font-family:var(--font);font-size:12px;letter-spacing:.05em;padding:8px 2px;color:var(--ink);
}
.field textarea{resize:vertical;min-height:90px}
.field input:focus,.field textarea:focus{outline:none;border-color:#000}
.btn{
  display:inline-block;width:100%;margin-top:12px;padding:14px;
  background:var(--ink);color:#fff;border:0;cursor:pointer;
  text-transform:uppercase;letter-spacing:.2em;font-size:10px;font-family:var(--font);
  transition:opacity .2s;
}
.btn:hover{opacity:.82}
.note{margin-top:18px;color:var(--muted);font-size:10px;letter-spacing:.08em}

/* ---------- Footer ---------- */
footer{
  border-top:1px solid var(--line);
  padding:26px;text-align:center;color:var(--muted);
  text-transform:uppercase;letter-spacing:.2em;font-size:9px;
}
footer a{color:var(--muted)}
footer a:hover{color:var(--ink)}