:root {
  --rubber: #1c1f23;      /* base in gomma del tappetino */
  --cloth: #262a30;       /* superficie in tessuto */
  --seam: #3a3f47;
  --chalk: #eceef1;
  --muted: #9aa1ab;
  --thread: #f2b84b;      /* filo della cucitura */
  --danger: #ff7a6b;
  --ok: #7fd1a0;
  --radius-mat: 14px;
  --font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-body: 'Barlow', system-ui, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--rubber); color: var(--chalk);
  font: 400 16px/1.5 var(--font-body);
}
a { color: var(--thread); }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--thread); outline-offset: 2px; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- testata */
.top {
  max-width: 1400px; margin: 0 auto; padding: 40px 24px 20px;
  display: grid; grid-template-columns: 1fr minmax(220px, 360px); gap: 24px; align-items: end;
}
.brand {
  margin: 0; font: 700 clamp(2.6rem, 6vw, 4.6rem)/0.9 var(--font-display);
  letter-spacing: -0.01em; text-transform: none;
}
.tagline { margin: 10px 0 0; color: var(--muted); max-width: 52ch; }
.search { position: relative; }
.search input {
  width: 100%; padding: 12px 14px 12px 42px; border-radius: 10px;
  background: var(--cloth); border: 1px solid var(--seam);
}
.search input::placeholder { color: var(--muted); }
.search svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); }

/* ---------- barra sezioni */
.rail {
  position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--rubber) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--seam);
}
.rail-inner {
  max-width: 1400px; margin: 0 auto; padding: 0 24px;
  display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none;
}
.rail-inner::-webkit-scrollbar { display: none; }
.tab {
  flex: none; background: none; border: 0; padding: 14px 12px 12px; cursor: pointer;
  font: 600 1.1rem/1 var(--font-display); color: var(--muted);
  border-bottom: 3px solid transparent; white-space: nowrap;
}
.tab:hover { color: var(--chalk); }
.tab[aria-selected="true"] { color: var(--chalk); border-bottom-color: var(--thread); }
.tab small { font: 500 0.8rem var(--font-body); margin-left: 6px; color: var(--muted); }

/* ---------- griglia tappetini */
main { max-width: 1400px; margin: 0 auto; padding: 24px 24px 80px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin: 8px 0 18px; flex-wrap: wrap; }
.section-head h2 { margin: 0; font: 600 2rem/1.1 var(--font-display); }
.section-head p { margin: 4px 0 0; color: var(--muted); max-width: 60ch; }
.section-head .count { color: var(--muted); font-size: 0.95rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 28px 22px; }
.mat { background: none; border: 0; padding: 0; text-align: left; cursor: pointer; min-width: 0; width: 100%; }
.mat-face {
  position: relative; aspect-ratio: 60 / 35; border-radius: var(--radius-mat); overflow: hidden;
  background: var(--cloth);
  box-shadow: 0 1px 0 rgba(255,255,255,.04) inset, 0 6px 18px -8px rgba(0,0,0,.6);
}
.mat-face img { width: 100%; height: 100%; object-fit: cover; }
/* la cucitura: il bordo cucito dei playmat, compare al passaggio */
.mat-face::after {
  content: ''; position: absolute; inset: 5px; border-radius: calc(var(--radius-mat) - 4px);
  border: 2px dashed var(--thread); opacity: 0; transition: opacity .15s;
  pointer-events: none;
}
.mat:hover .mat-face::after, .mat:focus-visible .mat-face::after { opacity: .95; }
.mat:focus-visible { outline: none; }
.mat-meta { display: flex; gap: 10px; align-items: baseline; margin-top: 10px; }
.code { font: 600 1rem var(--font-display); color: var(--thread); letter-spacing: .02em; flex: none; }
.mat-title { color: var(--chalk); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.empty { padding: 60px 0; color: var(--muted); max-width: 46ch; }
.empty strong { color: var(--chalk); display: block; font: 600 1.4rem var(--font-display); margin-bottom: 6px; }

footer { border-top: 1px solid var(--seam); color: var(--muted); }
footer .in { max-width: 1400px; margin: 0 auto; padding: 24px; display: flex; gap: 20px; flex-wrap: wrap; justify-content: space-between; }
footer a { color: var(--muted); }

/* ---------- visore */
.viewer { position: fixed; inset: 0; z-index: 20; background: #101215; display: none; }
.viewer.open { display: grid; grid-template-columns: 1fr 340px; }
.viewer-stage { position: relative; display: grid; place-items: center; padding: 32px; min-height: 0; }
.viewer-stage img {
  max-width: 100%; max-height: calc(100vh - 64px); border-radius: var(--radius-mat);
  outline: 2px dashed var(--thread); outline-offset: -7px;
  box-shadow: 0 20px 60px -20px #000;
}
.viewer-side { background: var(--cloth); padding: 28px; display: flex; flex-direction: column; gap: 16px; overflow-y: auto; }
.viewer-side .code { font-size: 2.6rem; line-height: 1; }
.viewer-side h3 { margin: 0; font: 600 1.5rem/1.15 var(--font-display); }
.viewer-side .where { color: var(--muted); margin: 0; }
.viewer-side .hint { color: var(--muted); font-size: .92rem; margin: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 16px; border-radius: 10px; border: 1px solid var(--seam);
  background: var(--rubber); color: var(--chalk); cursor: pointer; text-decoration: none; font-weight: 500;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--thread); color: #22180a; border-color: var(--thread); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { color: var(--danger); }
.btn.small { padding: 6px 10px; font-size: .9rem; border-radius: 8px; }
.icon-btn {
  position: absolute; width: 44px; height: 44px; border-radius: 50%; border: 0;
  background: rgba(255,255,255,.08); color: var(--chalk); cursor: pointer; display: grid; place-items: center;
}
.icon-btn:hover { background: rgba(255,255,255,.16); }
.v-close { top: 16px; right: 16px; }
.v-prev { left: 16px; top: 50%; transform: translateY(-50%); }
.v-next { right: 16px; top: 50%; transform: translateY(-50%); }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 40;
  background: var(--chalk); color: var(--rubber); padding: 10px 16px; border-radius: 10px; font-weight: 500;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.toast.show { opacity: 1; }

@media (max-width: 860px) {
  .top { grid-template-columns: 1fr; padding-top: 28px; }
  .viewer.open { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  .viewer-stage { padding: 64px 12px 64px; }
  .viewer-stage img { max-height: 55vh; }
  .viewer-side { padding: 20px 16px; }
  .viewer-side .code { font-size: 2rem; }
  .v-prev, .v-next { top: auto; bottom: 12px; transform: none; }
}
@media (max-width: 480px) {
  .top, main, .rail-inner { padding-left: 16px; padding-right: 16px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 12px; }
  .mat-meta { flex-direction: column; gap: 0; margin-top: 6px; }
  .mat-title { font-size: .92rem; max-width: 100%; }
  .mat-face { --radius-mat: 10px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }