/* ═══════════════════════════════════════
   POTI STUDIO — style.css
   Palette: near-black bg · white text · no accents
════════════════════════════════════════ */

/* ── Tokens ─────────────────────────────── */
:root {
  --bg:         #0e0e0e;
  --fg:         #f0f0f0;
  --fg-dim:     rgba(240, 240, 240, 0.38);
  --fg-mid:     rgba(240, 240, 240, 0.60);
  --border:     rgba(240, 240, 240, 0.10);
  --hover-bg:   rgba(240, 240, 240, 0.05);

  --font:       'Sora', sans-serif;

  --ease:       cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur:        220ms;
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  font-weight: 300;
  color: var(--fg);
}

ul {
  list-style: none;
}

/* ═══════════════════════════════════════
   MAIN STAGE — full-viewport centred column
════════════════════════════════════════ */
.stage {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.4rem;
  padding: 3rem 1.5rem;
}

/* ═══════════════════════════════════════
   TOP NAV — About | Contact
════════════════════════════════════════ */
.top-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  letter-spacing: 0.08em;
}

.nav-link {
  font-size: 0.70rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-mid);
  padding: 0.25rem 0.1rem;
  transition: color var(--dur) var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--fg);
}

.nav-divider {
  color: var(--fg-dim);
  font-size: 0.70rem;
  line-height: 1;
  user-select: none;
}

/* ═══════════════════════════════════════
   LOGO — POTI [icon] STUDIO
════════════════════════════════════════ */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: clamp(2.6rem, 9vw, 5.5rem);
  font-weight: 200;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  line-height: 1;
  user-select: none;
}

.logo__icon {
  width: 0.7em;
  height: 0.7em;
  display: block;
  flex-shrink: 0;
}

/* Mobile: due righe — [ POTI icon ] su riga 1, [ STUDIO ] su riga 2 */
@media (max-width: 540px) {
  .logo {
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    font-size: clamp(2rem, 14vw, 3rem);
    letter-spacing: 0.28em;
    gap: 0 0.4em;
    row-gap: 0.2em;
  }

  .logo__word:first-child { order: 0; }
  .logo__icon             { order: 1; width: 0.75em; height: 0.75em; }
  .logo__word:last-child  { order: 2; width: 100%; text-align: center; }
}

/* ═══════════════════════════════════════
   PRODUCTS — trigger + dropdown
════════════════════════════════════════ */
.products-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.products-trigger {
  font-size: 0.70rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-mid);
  padding: 0.25rem 0.1rem;
  transition: color var(--dur) var(--ease);
}

.products-trigger:hover,
.products-trigger[aria-expanded="true"] {
  color: var(--fg);
}

/* Dropdown list */
.products-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 150px;
  text-align: center;
  padding-top: 1rem; /* colma il gap visivo senza interrompere l'hover */

  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.products-dropdown.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.products-dropdown li + li {
  margin-top: 0.15rem;
}

.product-link {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.10em;
  color: var(--fg-mid);
  padding: 0.45rem 1.4rem;
  border-radius: 2px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.product-link:hover {
  color: var(--fg);
  background: var(--hover-bg);
}

/* ═══════════════════════════════════════
   OVERLAY — backdrop + panel separati
   backdrop  z-index 50  — oscura lo sfondo
   main      z-index 10  — nav sempre cliccabile
   panel     z-index 200 — sopra tutto
════════════════════════════════════════ */

/* Backdrop: oscura lo sfondo, NON copre i bottoni */
.overlay-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  background: rgba(14, 14, 14, 0);
  transition: background var(--dur) var(--ease);
}

.overlay-backdrop.is-open {
  pointer-events: auto;
  background: rgba(14, 14, 14, 0.72);
}

/* Panel: scende dall'alto, sopra tutto */
.overlay-panel {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 0;
  overflow: hidden;
  background: #141414;
  border-bottom: 1px solid var(--border);
  transition: height 300ms var(--ease);
}

.overlay-panel.is-open {
  height: 260px;
}

/* Close button */
.overlay__close {
  position: absolute;
  top: 1.5rem;
  right: 1.8rem;
  font-size: 1.1rem;
  color: var(--fg-dim);
  line-height: 1;
  transition: color var(--dur) var(--ease);
  opacity: 0;
  pointer-events: none;
}

.overlay-panel.is-open .overlay__close {
  opacity: 1;
  pointer-events: auto;
  transition-delay: 80ms;
}

.overlay__close:hover {
  color: var(--fg);
}

/* Content pane */
.overlay__content {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms var(--ease);
  transition-delay: 0ms;
}

.overlay-panel.is-open .overlay__content.is-active {
  opacity: 1;
  pointer-events: auto;
  transition-delay: 140ms;
}

/* Panel label */
.overlay__label {
  font-size: 0.60rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
}

/* About text */
.overlay__text {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--fg);
  text-align: center;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

/* Contact list */
.contact-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}

.contact-list li {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
}

.contact-list__type {
  font-size: 0.60rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-dim);
  min-width: 5rem;
  text-align: right;
}

.contact-list__value {
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--fg-mid);
  transition: color var(--dur) var(--ease);
}

.contact-list__value:hover {
  color: var(--fg);
}

/* ═══════════════════════════════════════
   RESPONSIVE — mobile
════════════════════════════════════════ */
@media (max-width: 480px) {
  .stage {
    gap: 2rem;
  }

  .overlay-panel.is-open {
    height: 300px;
  }

  .overlay__content {
    height: 300px;
  }

  .contact-list li {
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
  }

  .contact-list__type {
    text-align: center;
    min-width: unset;
  }
}