/* Struttura e movimento condivisi. I temi (themes/*.css) definiscono solo i valori. */

:root {
  color-scheme: light dark;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-sheet: cubic-bezier(0.32, 0.72, 0, 1);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --bar-h: 52px;
  --tab-h: 56px;

  /* raggio interno = raggio esterno − padding */
  --radius-inner: calc(var(--radius-card) - var(--pad));

  --press: color-mix(in oklab, var(--text) 8%, transparent);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  scrollbar-gutter: stable;
  background: var(--bg);
}
html.is-locked { overflow: hidden; }

body {
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.4 var(--font-text);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
  -webkit-tap-highlight-color: transparent;
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; touch-action: manipulation; }
ul { list-style: none; padding: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.num { font-variant-numeric: tabular-nums; }
.icon { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Barra superiore ---------- */

.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  height: calc(var(--bar-h) + var(--safe-top));
  padding: var(--safe-top) calc(var(--gutter) - 10px) 0 var(--gutter);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 200ms ease-out, border-color 200ms ease-out, backdrop-filter 200ms ease-out;
}
.bar.is-scrolled {
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-color: var(--hairline);
}
.bar__title {
  font: 600 1.0625rem/1 var(--font-display);
  letter-spacing: var(--tracking-small, -0.01em);
  opacity: 0; transform: translateY(4px);
  transition: opacity 200ms ease-out, transform 200ms var(--ease-out);
}
.bar.is-scrolled .bar__title { opacity: 1; transform: none; }

.icon-btn {
  display: grid; place-items: center;
  width: 44px; height: 44px; border-radius: 50%;
  transition: background-color 150ms ease-out, transform 100ms ease-out;
}
.icon-btn:active { background: var(--press); transform: scale(0.97); }
.icon-btn[aria-expanded="true"] { background: var(--press); }

main { padding: 0 var(--gutter) calc(var(--tab-h) + var(--safe-bottom) + var(--space-6)); }

.largetitle {
  margin: calc(var(--bar-h) * -1 + var(--space-1)) 0 var(--space-4);
  padding-top: var(--space-2);
  font: var(--title-weight, 700) var(--title-size, 2.125rem)/1.05 var(--font-display);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}

/* ---------- Segmented control ---------- */

.segmented {
  position: relative; display: grid; grid-template-columns: 1fr 1fr;
  margin-bottom: var(--space-4); padding: 2px;
  background: var(--surface-2); border-radius: var(--radius-control);
}
.segmented__thumb {
  position: absolute; top: 2px; bottom: 2px; left: 0;
  background: var(--surface); border-radius: calc(var(--radius-control) - 2px);
  box-shadow: 0 1px 3px oklch(0 0 0 / 0.12);
  transition: transform 300ms var(--ease-in-out), width 300ms var(--ease-in-out);
}
.segmented button {
  position: relative; min-height: 40px; padding: 0 var(--space-3);
  font-size: 0.9375rem; font-weight: 600; color: var(--text-2);
  transition: color 200ms ease-out;
}
.segmented button[aria-selected="true"] { color: var(--text); }

/* ---------- Brand ---------- */

.grid { display: grid; grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); gap: var(--gap); }

.brand {
  position: relative;
  border-radius: var(--radius-card); overflow: hidden;
  background: var(--surface); color: var(--text);
  box-shadow: var(--shadow);
  transition: transform 200ms var(--ease-out);
}
.brand:has(.brand__open:active) { transform: scale(0.97); transition-duration: 100ms; }

.brand__open { display: grid; gap: var(--space-1); width: 100%; padding: var(--pad) var(--pad) 0; text-align: left; }

/* Logo / iniziale: è l'elemento principale della card (tutta la larghezza), raggio interno = raggio card − padding */
.brand__mark, .sheet__logo {
  position: relative; display: grid; place-items: center; overflow: hidden;
  background: var(--surface-2); color: var(--text-2);
  font: 700 clamp(2rem, 14vw, 3.25rem)/1 var(--font-display);
}
.brand__mark img, .sheet__logo img { width: 100%; height: 100%; object-fit: contain; }
.brand__mark::after, .sheet__logo::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 0 0 1px var(--hairline); }
.brand__mark { aspect-ratio: 1; border-radius: var(--radius-inner); }

.brand__name {
  display: flex; align-items: center; min-height: 44px; padding-right: 36px; /* spazio per la stella */
  min-width: 0; overflow-wrap: anywhere;
  font: var(--name-weight, 600) var(--name-size, 1rem)/1.15 var(--font-display);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}

/* Preferito: due stelle sovrapposte, sfumate con scala + blur */
.fav-btn {
  display: grid; place-items: center; width: 44px; height: 44px;
  transition: transform 100ms ease-out;
}
.fav-btn:active { transform: scale(0.97); }
.fav-btn .icon {
  grid-area: 1 / 1;
  transition: opacity 300ms cubic-bezier(0.2, 0, 0, 1), transform 300ms cubic-bezier(0.2, 0, 0, 1), filter 300ms cubic-bezier(0.2, 0, 0, 1);
}
.fav-btn .icon--on  { fill: currentColor; opacity: 0; transform: scale(0.25); filter: blur(4px); }
.fav-btn[aria-pressed="true"] .icon--on  { opacity: 1; transform: none; filter: none; }
.fav-btn[aria-pressed="true"] .icon--off { opacity: 0; transform: scale(0.25); filter: blur(4px); }
.brand .fav-btn { position: absolute; bottom: 0; right: 4px; }

.empty { grid-column: 1 / -1; padding: var(--space-6) var(--space-4); text-align: center; color: var(--text-2); text-wrap: balance; }

/* ---------- Barra schede ---------- */

.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: flex; height: calc(var(--tab-h) + var(--safe-bottom)); padding-bottom: var(--safe-bottom);
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(180%); -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--hairline);
}
.tab {
  flex: 1; display: grid; place-content: center; justify-items: center; gap: 2px;
  font-size: 0.6875rem; font-weight: 600; color: var(--text-2);
  transition: color 200ms ease-out, transform 100ms ease-out;
}
.tab:active { transform: scale(0.97); }
.tab[aria-selected="true"] { color: var(--accent); }
.tab .icon { transition: fill 200ms ease-out; }
.tab[aria-selected="true"] .icon { fill: color-mix(in oklab, currentColor 18%, transparent); }

/* ---------- Scheda sito (shared element dalla card) ---------- */

.sheet {
  position: fixed; inset: 0; z-index: 30; display: flex; flex-direction: column;
  background: var(--surface); color: var(--text);
  clip-path: inset(0px 0px 0px 0px round 0px);
  transition: clip-path 420ms var(--ease-sheet), transform 420ms var(--ease-sheet);
}
.sheet.is-closing { transition-duration: 336ms; }

.sheet__bar {
  position: relative; display: grid; grid-template-columns: 44px 1fr 44px; align-items: center;
  padding: calc(var(--safe-top) + var(--space-3)) var(--space-2) var(--space-1);
  background: var(--surface); color: var(--text);
  border-bottom: 1px solid var(--hairline); touch-action: none; opacity: 0;
  transition: opacity 120ms ease-out;
}
.sheet__bar::before {
  content: ""; position: absolute; top: calc(var(--safe-top) + 5px); left: 50%;
  width: 36px; height: 5px; margin-left: -18px; border-radius: 3px; background: var(--hairline);
}
.sheet__title { text-align: center; font-weight: 600; letter-spacing: var(--tracking-small, -0.01em); }
.sheet__body {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-2); padding: var(--space-5) var(--gutter) calc(var(--safe-bottom) + var(--space-6));
  text-align: center; background: var(--bg); color: var(--text);
  opacity: 0; transition: opacity 120ms ease-out;
}
.sheet.is-open .sheet__bar,
.sheet.is-open .sheet__body { opacity: 1; transition: opacity 220ms ease-out 140ms; }

.sheet__logo { width: 112px; aspect-ratio: 1; margin-bottom: var(--space-3); border-radius: 26px; }
.sheet__name { font: var(--title-weight, 700) 1.75rem/1.1 var(--font-display); letter-spacing: var(--tracking-display); text-wrap: balance; }
.sheet__meta { color: var(--text-2); }
.sheet__cta {
  display: grid; place-items: center; min-height: 48px; margin-top: var(--space-4); padding: 0 var(--space-5);
  border-radius: var(--radius-control); background: var(--accent); color: var(--bg);
  font-weight: 600; text-decoration: none; transition: transform 100ms ease-out;
}
.sheet__cta:active { transform: scale(0.97); }

/* ---------- Movimento ---------- */

@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

/* Entrata a cascata: 30 ms tra un elemento e il successivo */
.is-entering .brand,
.is-entering .segmented,
.is-entering .empty { animation: rise 320ms var(--ease-out) backwards; animation-delay: calc(var(--i, 0) * 30ms); }
.largetitle.is-entering { animation: rise 280ms var(--ease-out) backwards; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; transition-delay: 0s !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .bar.is-scrolled, .tabbar { background: var(--bg); backdrop-filter: none; -webkit-backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  :root { --hairline: color-mix(in oklab, var(--text) 40%, transparent); }
}