/* ============================================================================
   CLESSIO LAB — DESIGN SYSTEM V2 · "EDITORIAL ARTIGIANALE"
   Il banco di lavoro come rivista. Footwear customizer, Davide Paoli, est. 2018.
   Direzione: blend Editorial/magazine + Luxury refined (anti-slop).
   ----------------------------------------------------------------------------
   CDN da incollare in theme.liquid <head> (NON gestiti qui):

   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..900;1,9..144,300..900&family=Hanken+Grotesk:wght@300..800&family=Space+Mono:wght@400;700&display=swap" rel="stylesheet">

   Engine (carica con defer, dopo clessio.js):
   <script src="https://unpkg.com/lenis@1.1.13/dist/lenis.min.js" defer></script>
   <script src="https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/gsap.min.js" defer></script>
   <script src="https://cdn.jsdelivr.net/npm/gsap@3.12.5/dist/ScrollTrigger.min.js" defer></script>
   ============================================================================ */

/* ----------------------------------------------------------------------------
   1. TOKENS
   ---------------------------------------------------------------------------- */
:root {
  /* — Palette 60/30/10 (vincolo brief) — */
  --panna: #F4F1EA;          /* 60% dominante  */
  --antracite: #1A1A1D;      /* 30% inchiostro */
  --salvia: #6B7A5E;         /* 10% accento RARO */

  /* Neutri caldi derivati — niente pure white/black */
  --panna-deep: #EAE5DA;     /* sezioni alternate, leggermente più scure */
  --panna-veil: #FBF9F4;     /* il quasi-bianco più chiaro ammesso */
  --seam: #D8D3C7;           /* cuciture / hairline 1px */
  --ink-60: rgba(26, 26, 29, 0.62);  /* body secondario */
  --ink-38: rgba(26, 26, 29, 0.38);  /* caption / credit */
  --ink-14: rgba(26, 26, 29, 0.14);  /* numerali contact-sheet fantasma */
  --salvia-08: rgba(107, 122, 94, 0.08);

  /* — Famiglie tipografiche (3, con pairing vero) — */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;       /* titoli serif high-contrast */
  --font-body: "Hanken Grotesk", system-ui, -apple-system, sans-serif; /* corpo grotesque */
  --font-mono: "Space Mono", ui-monospace, "SFMono-Regular", monospace;/* label / codici archivio */

  /* — Scala tipografica DRAMMATICA (clamp fluido, salti ~2x) — */
  --t-caption: 0.6875rem;                          /* 11px mono, label archivio */
  --t-eyebrow: 0.75rem;                            /* 12px mono uppercase */
  --t-body: clamp(1rem, 0.95rem + 0.3vw, 1.1875rem);        /* 16 → 19 */
  --t-lead: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem);       /* 20 → 28, intro */
  --t-subhead: clamp(1.75rem, 1.2rem + 2.4vw, 3.25rem);     /* 28 → 52 */
  --t-headline: clamp(2.75rem, 1.6rem + 5.4vw, 6rem);       /* 44 → 96, titoli sezione */
  --t-hero: clamp(4rem, 1rem + 13vw, 10rem);                /* 64 → 160, wordmark hero */
  --t-numeral: clamp(5rem, 2rem + 16vw, 13rem);             /* numerali contact-sheet enormi */

  --lh-tight: 0.92;          /* display grandi */
  --lh-snug: 1.06;           /* headline */
  --lh-body: 1.62;           /* lettura da rivista */
  --track-display: -0.025em; /* tracking negativo SOLO sui display */
  --track-mono: 0.16em;      /* label mono spaziate */

  /* — Spacing: NON multipli di 8 uniformi. Densità a salti. — */
  --fit-1: 4px;              /* fitto: contact-sheet, cuciture interne */
  --fit-2: 8px;
  --fit-3: 12px;
  --step-1: 20px;            /* ritmo medio interno */
  --step-2: 32px;
  --step-3: 48px;
  --step-4: 64px;            /* salto di densita' tra blocco denso e arioso (countdown -> waitlist) */
  --breath-1: 72px;          /* respiro tra blocchi */
  --breath-2: clamp(80px, 9vw, 120px);    /* respiro di sezione */
  --breath-3: clamp(96px, 13vw, 160px);   /* respiro ampio, "rivista" */

  /* — Struttura — */
  --gutter: clamp(20px, 5vw, 64px);   /* margine laterale fluido */
  --measure: 60ch;                    /* larghezza testo da rivista */
  --hair: 1px;
  --radius: 0;                         /* radius 0 OVUNQUE (vincolo) */

  /* — Motion: UNA lingua sola — */
  --ease-clessio: cubic-bezier(0.22, 1, 0.36, 1); /* expo-out morbido */
  --dur-fast: 0.32s;
  --dur-base: 0.6s;
  --dur-slow: 0.9s;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
/* Lenis prende il controllo dello scroll quando attivo */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  margin: 0;
  background: var(--panna);
  color: var(--antracite);
  font-family: var(--font-body);
  font-size: var(--t-body);
  font-weight: 400;
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, picture, canvas, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--salvia); color: var(--panna-veil); }

/* ----------------------------------------------------------------------------
   3. TIPOGRAFIA
   ---------------------------------------------------------------------------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 360;             /* Fraunces è high-contrast: peso medio-basso = eleganza */
  line-height: var(--lh-snug);
  letter-spacing: var(--track-display);
  margin: 0;
  font-optical-sizing: auto;
}
h1 { font-size: var(--t-hero); line-height: var(--lh-tight); }
h2 { font-size: var(--t-headline); }
h3 { font-size: var(--t-subhead); }

p { margin: 0 0 var(--step-1); }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 600; }

/* Eyebrow / label / codici — mono uppercase, MAI sul body */
.eyebrow,
.archive-label {
  font-family: var(--font-mono);
  font-size: var(--t-eyebrow);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: var(--track-mono);
  color: var(--ink-60);
  margin: 0;
}
.archive-label { font-size: var(--t-caption); color: var(--ink-38); }
.eyebrow--accent { color: var(--salvia); }

.lead {
  font-size: var(--t-lead);
  line-height: 1.45;
  color: var(--antracite);
  font-weight: 350;
}

.caption {
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  letter-spacing: 0.04em;
  color: var(--ink-38);
  text-transform: none;
}

/* Larghezza di lettura da rivista */
.measure { max-width: var(--measure); }
.measure--wide { max-width: 72ch; }

/* ----------------------------------------------------------------------------
   4. UTILITY EDITORIALI (il cuore del sistema)
   ---------------------------------------------------------------------------- */

/* Contenitore: larghezza VARIA per ruolo, non un'unica shell — */
.wrap { padding-inline: var(--gutter); }
.wrap--bleed { padding-inline: 0; }          /* full-bleed per image-band */
.wrap--narrow { max-width: 920px; margin-inline: auto; padding-inline: var(--gutter); }

/* Sezione: respiro variabile (densità a salti) — */
.section { padding-block: var(--breath-2); }
.section--air { padding-block: var(--breath-3); }    /* respira */
.section--tight { padding-block: var(--breath-1); }  /* più fitto */
.section--alt { background: var(--panna-deep); }     /* alternanza tonale */
.section--ink { background: var(--antracite); color: var(--panna); }
.section--ink .eyebrow,
.section--ink .archive-label { color: rgba(244, 241, 234, 0.5); }
.section--ink .caption { color: rgba(244, 241, 234, 0.42); }

/* Griglia editoriale asimmetrica a 12 colonne — */
.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: var(--step-3);
  align-items: start;
}
/* helper di campata, mobile = full poi override desktop */
.col-info { grid-column: 1 / -1; }
.col-main { grid-column: 1 / -1; }
.col-aside { grid-column: 1 / -1; }

/* Cucitura — hairline 1px strutturale (NON un bordo card) — */
.seam {
  border: 0;
  border-top: var(--hair) solid var(--seam);
  margin: 0;
}
.seam--v { border-top: 0; border-left: var(--hair) solid var(--seam); }
.section--ink .seam { border-color: rgba(244, 241, 234, 0.18); }

/* Band: blocco-immagine full-bleed, NON una card — */
.band {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--panna-deep);
}
.band > img,
.band > canvas { width: 100%; height: 100%; object-fit: cover; }
.band__caption {
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  letter-spacing: 0.04em;
  color: var(--ink-38);
  padding: var(--fit-3) 0 0;
}

/* Figura off-center — immagine deliberatamente decentrata — */
.figure-offset { position: relative; }
.figure-offset img { width: 100%; }
.figure-offset__note {
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  color: var(--ink-38);
  margin-top: var(--fit-3);
  letter-spacing: 0.04em;
}

/* Numerale contact-sheet ENORME — la firma — */
.numeral {
  font-family: var(--font-display);
  font-size: var(--t-numeral);
  font-weight: 300;
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--antracite);
  display: block;
}
.numeral--ghost { color: var(--ink-14); }
.section--ink .numeral { color: var(--panna); }
.section--ink .numeral--ghost { color: rgba(244, 241, 234, 0.12); }
.numeral__unit {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--ink-60);
  margin-top: var(--fit-2);
}

/* Placeholder asset marcato (mai dato finto, mai blob AI) — */
.placeholder {
  position: relative;
  aspect-ratio: 4 / 5;
  background:
    repeating-linear-gradient(
      135deg,
      var(--panna-deep) 0,
      var(--panna-deep) 11px,
      var(--panna) 11px,
      var(--panna) 22px
    );
  border: var(--hair) solid var(--seam);
  display: grid;
  place-items: center;
}
.placeholder::after {
  content: attr(data-label);
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--ink-38);
  text-align: center;
  padding: 0 var(--step-1);
}

/* ----------------------------------------------------------------------------
   5. BADGE "IN ARRIVO" — trattamento editoriale, non LED appariscente
   ---------------------------------------------------------------------------- */
.status {
  display: inline-flex;
  align-items: center;
  gap: var(--fit-2);
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--antracite);
}
.status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;            /* unica eccezione al radius 0: è un punto, non un box */
  background: var(--salvia);
  flex: 0 0 auto;
}
@media (prefers-reduced-motion: no-preference) {
  .status__dot { animation: clessio-pulse 2.4s var(--ease-clessio) infinite; }
}
@keyframes clessio-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.78); }
}
.section--ink .status { color: var(--panna); }

/* ----------------------------------------------------------------------------
   6. BOTTONI — ghost (testo+underline) e line (1px). NESSUNA card rounded+shadow.
   ---------------------------------------------------------------------------- */
.btn-ghost {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--t-eyebrow);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--antracite);
  padding-bottom: var(--fit-2);
  position: relative;
}
.btn-ghost::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: var(--hair);
  background: var(--antracite);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-clessio),
              background-color var(--dur-fast) var(--ease-clessio);
}
.btn-ghost:hover::after,
.btn-ghost:focus-visible::after {
  background: var(--salvia);
  transform: scaleX(0.62);         /* l'underline si ritrae, non un box hover */
}
.btn-ghost:focus-visible { outline: var(--hair) solid var(--salvia); outline-offset: 6px; }
.section--ink .btn-ghost { color: var(--panna); }
.section--ink .btn-ghost::after { background: var(--panna); }

.btn-line {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--t-eyebrow);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--antracite);
  border: var(--hair) solid var(--antracite);
  padding: var(--step-1) var(--step-2);
  background: transparent;
  transition: background-color var(--dur-fast) var(--ease-clessio),
              color var(--dur-fast) var(--ease-clessio),
              border-color var(--dur-fast) var(--ease-clessio);
}
.btn-line:hover,
.btn-line:focus-visible { background: var(--antracite); color: var(--panna); }
.btn-line:focus-visible { outline: var(--hair) solid var(--salvia); outline-offset: 4px; }
.btn-line:disabled { opacity: 0.4; pointer-events: none; }
.section--ink .btn-line { color: var(--panna); border-color: var(--panna); }
.section--ink .btn-line:hover { background: var(--panna); color: var(--antracite); }

/* ----------------------------------------------------------------------------
   7. FORM (waitlist) — stati reali, niente happy-path
   ---------------------------------------------------------------------------- */
.field {
  display: flex;
  align-items: stretch;
  border-bottom: var(--hair) solid var(--antracite);
  max-width: 480px;
}
.field__input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  padding: var(--fit-3) 0;
  font-family: var(--font-body);
  font-size: var(--t-body);
  color: var(--antracite);
}
.field__input::placeholder { color: var(--ink-38); }
.field__input:focus { outline: none; }
.field:focus-within { border-color: var(--salvia); }
.field__submit {
  font-family: var(--font-mono);
  font-size: var(--t-eyebrow);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  padding-left: var(--step-2);
  white-space: nowrap;
  color: var(--antracite);
  transition: color var(--dur-fast) var(--ease-clessio);
}
.field__submit:hover { color: var(--salvia); }
.field__submit:disabled { opacity: 0.4; pointer-events: none; }

.form-msg {
  font-family: var(--font-mono);
  font-size: var(--t-caption);
  letter-spacing: 0.04em;
  margin-top: var(--step-1);
  min-height: 1.2em;
}
.form-msg--error { color: #8a3b2e; }            /* terracotta scura, non rosso puro */
.form-msg--ok { color: var(--salvia); }
.is-loading .field__submit { opacity: 0.5; pointer-events: none; }

.section--ink .field { border-color: var(--panna); }
.section--ink .field__input { color: var(--panna); }
.section--ink .field__input::placeholder { color: rgba(244, 241, 234, 0.4); }
.section--ink .field__submit { color: var(--panna); }

/* ----------------------------------------------------------------------------
   8. SCROLL ORIZZONTALE (editoriale)
   ---------------------------------------------------------------------------- */
.hscroll {
  position: relative;
  overflow: hidden;
}
.hscroll__track {
  display: flex;
  gap: var(--gutter);
  will-change: transform;
}
.hscroll__item {
  flex: 0 0 auto;
  width: clamp(260px, 60vw, 540px);
}
/* Scala variabile: i pezzi non sono tutti uguali (anti L2) */
.hscroll__item:nth-child(3n+1) { width: clamp(300px, 72vw, 640px); }
.hscroll__item:nth-child(3n)   { width: clamp(220px, 48vw, 420px); }

/* Fallback senza GSAP: scroll-snap nativo */
.hscroll[data-fallback="snap"] .hscroll__track {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--step-1);
}
.hscroll[data-fallback="snap"] .hscroll__item { scroll-snap-align: start; }

/* ----------------------------------------------------------------------------
   9. REVEAL — una sola "lingua" di motion, sobria (clip/translate piccolo)
   ---------------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-base) var(--ease-clessio),
              transform var(--dur-base) var(--ease-clessio);
  will-change: opacity, transform;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* prefers-reduced-motion: niente movimento, contenuto sempre visibile */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .status__dot { animation: none; }
}

/* ----------------------------------------------------------------------------
   10. RESPONSIVE — mobile-first; il desktop introduce l'asimmetria
   ---------------------------------------------------------------------------- */
@media (min-width: 768px) {
  /* Griglia editoriale: colonna-info stretta + main ampio (asimmetria) */
  .col-info  { grid-column: 1 / 4; }
  .col-main  { grid-column: 4 / 13; }
  .col-aside { grid-column: 9 / 13; }

  /* varianti di asimmetria per rompere la ripetizione */
  .editorial-grid--flip .col-info { grid-column: 9 / 13; order: 2; }
  .editorial-grid--flip .col-main { grid-column: 1 / 9; order: 1; }

  .seam--v { padding-left: var(--step-3); }
}

@media (min-width: 1100px) {
  .col-info  { grid-column: 1 / 4; }
  .col-main  { grid-column: 5 / 13; }   /* gap di una colonna = aria */
  .col-aside { grid-column: 9 / 13; }
}
