/* =========================================================================
   Abaco Zuzzurellone
   Palette: carta calda / inchiostro, con i due poli del vocabolario come
   colori portanti — cobalto per ABACO, vermiglio per ZUZZURELLONE.
   ========================================================================= */

/* ── token ─────────────────────────────────────────────────────────────── */
:root {
  color-scheme: light;

  --paper:      #f2ede3;
  --paper-deep: #e7dfd0;
  --surface:    #fbf8f2;
  --surface-2:  #f6f1e7;
  --ink:        #17130f;
  --ink-soft:   #6a5b4c;
  --ink-faint:  #9a8b7c;
  --line:       rgba(23, 19, 15, .14);
  --line-soft:  rgba(23, 19, 15, .07);

  --abaco:      #1f45c4;
  --abaco-soft: rgba(31, 69, 196, .12);
  --zuzz:       #d93c22;
  --zuzz-soft:  rgba(217, 60, 34, .12);
  --gold:       #c98a06;
  --gold-ink:   #8a5f04;
  --gold-soft:  rgba(201, 138, 6, .14);
  --green:      #1f7a56;

  --shadow-sm: 0 1px 2px rgba(23,19,15,.06), 0 2px 8px rgba(23,19,15,.05);
  --shadow-md: 0 2px 4px rgba(23,19,15,.05), 0 10px 26px -8px rgba(23,19,15,.18);
  --shadow-lg: 0 4px 10px rgba(23,19,15,.06), 0 26px 60px -18px rgba(23,19,15,.30);

  --font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', 'Cascadia Mono', Consolas, monospace;

  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  --ease-out:    cubic-bezier(.22, .78, .27, 1);
  --ease-spring: cubic-bezier(.22, 1.28, .38, 1);
  --ease-soft:   cubic-bezier(.45, 0, .15, 1);

  --wrap: 62rem;
}

/* Dark mode is defined twice on purpose: once for the system preference (so a
   visitor who never touches the toggle still gets it) and once for the manual
   [data-theme] override, which must win in both directions. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper:      #100e0c;
    --paper-deep: #0a0908;
    --surface:    #1a1714;
    --surface-2:  #221e1a;
    --ink:        #f3ece1;
    --ink-soft:   #a3958a;
    --ink-faint:  #756860;
    --line:       rgba(243, 236, 225, .15);
    --line-soft:  rgba(243, 236, 225, .07);
    --abaco:      #7d9bff;
    --abaco-soft: rgba(125, 155, 255, .16);
    --zuzz:       #ff7454;
    --zuzz-soft:  rgba(255, 116, 84, .16);
    --gold:       #ffc453;
    --gold-ink:   #ffc453;
    --gold-soft:  rgba(255, 196, 83, .16);
    --green:      #52d199;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow-md: 0 2px 6px rgba(0,0,0,.4), 0 12px 30px -10px rgba(0,0,0,.6);
    --shadow-lg: 0 4px 12px rgba(0,0,0,.45), 0 30px 70px -20px rgba(0,0,0,.8);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper:      #100e0c;
  --paper-deep: #0a0908;
  --surface:    #1a1714;
  --surface-2:  #221e1a;
  --ink:        #f3ece1;
  --ink-soft:   #a3958a;
  --ink-faint:  #756860;
  --line:       rgba(243, 236, 225, .15);
  --line-soft:  rgba(243, 236, 225, .07);
  --abaco:      #7d9bff;
  --abaco-soft: rgba(125, 155, 255, .16);
  --zuzz:       #ff7454;
  --zuzz-soft:  rgba(255, 116, 84, .16);
  --gold:       #ffc453;
  --gold-ink:   #ffc453;
  --gold-soft:  rgba(255, 196, 83, .16);
  --green:      #52d199;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 2px 6px rgba(0,0,0,.4), 0 12px 30px -10px rgba(0,0,0,.6);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.45), 0 30px 70px -20px rgba(0,0,0,.8);
}

/* ── reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100svh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: clamp(15px, .5vw + 13.6px, 17px);
  line-height: 1.55;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.1; }
p { margin: 0 0 .8em; }
button, input { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
svg { display: block; }
:focus-visible {
  outline: 2.5px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ── sfondo ────────────────────────────────────────────────────────────── */
.backdrop { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.backdrop-glow {
  position: absolute;
  width: 60vmax; height: 60vmax;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .30;
  animation: drift 26s var(--ease-soft) infinite alternate;
}
.backdrop-glow--a { background: var(--abaco); top: -26vmax; left: -18vmax; }
.backdrop-glow--z { background: var(--zuzz);  bottom: -30vmax; right: -20vmax; animation-delay: -13s; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .backdrop-glow { opacity: .17; } }
:root[data-theme="dark"] .backdrop-glow { opacity: .17; }
@keyframes drift {
  from { transform: translate3d(0,0,0) scale(1); }
  to   { transform: translate3d(6vmax, 4vmax, 0) scale(1.16); }
}
.backdrop-grain {
  position: absolute; inset: -50%;
  opacity: .30;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

/* ── topbar ────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: .7rem clamp(.9rem, 3vw, 2rem);
  padding-top: max(.7rem, env(safe-area-inset-top));
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: flex; align-items: center; gap: .6rem; padding: .25rem; border-radius: var(--r-sm); }
.brand-mark { width: 30px; height: 30px; flex: none; }
.mark-bg { fill: var(--zuzz); }
.mark-rods { stroke: var(--paper); stroke-width: 2.2; stroke-linecap: round; fill: none; }
.mark-beads { fill: var(--paper); }
.brand:hover .mark-beads { animation: beads .6s var(--ease-spring); }
@keyframes beads { 50% { transform: translateX(4px); } }
.mark-beads { transition: transform .4s var(--ease-spring); transform-origin: center; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.02rem; font-weight: 700; letter-spacing: -.02em;
  font-variation-settings: 'SOFT' 30, 'WONK' 1, 'opsz' 20;
  white-space: nowrap;
}
.brand-name span { color: var(--zuzz); }
.brand-name span::before { content: ' '; }
@media (max-width: 30rem) { .brand-name { font-size: .92rem; } .brand-name span { display: none; } }

.topbar-actions { display: flex; gap: .25rem; }
.iconbtn {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 11px;
  color: var(--ink-soft);
  transition: background .22s var(--ease-out), color .22s var(--ease-out), transform .22s var(--ease-spring);
}
.iconbtn:hover { background: var(--surface-2); color: var(--ink); transform: translateY(-1px); }
.iconbtn:active { transform: translateY(0) scale(.94); }
.iconbtn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.ico-moon, .ico-sound-on { display: none; }
:root[data-theme="dark"] .ico-sun { display: none; }
:root[data-theme="dark"] .ico-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ico-sun { display: none; }
  :root:not([data-theme="light"]) .ico-moon { display: block; }
}
#btn-sound[aria-pressed="true"] { color: var(--gold); }
#btn-sound[aria-pressed="true"] .ico-sound-off { display: none; }
#btn-sound[aria-pressed="true"] .ico-sound-on { display: block; }

/* ── impianto schermate ────────────────────────────────────────────────── */
main { display: block; }
.screen {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(1.2rem, 4vw, 3rem) clamp(1rem, 4vw, 2rem) 5rem;
}
.screen[hidden] { display: none; }
.screen.is-entering > *,
.screen.is-entering .doc-block,
.screen.is-entering .modes > *,
.screen.is-entering .hero > * {
  animation: riseIn .58s var(--ease-out) backwards;
  animation-delay: calc(var(--i, 0) * 42ms);
}
@keyframes riseIn {
  from { opacity: 0; transform: translate3d(0, 14px, 0); filter: blur(3px); }
  to   { opacity: 1; transform: none; filter: none; }
}

/* ── HERO ──────────────────────────────────────────────────────────────── */
.hero { text-align: center; padding: clamp(.5rem, 3vw, 2rem) 0 clamp(1.5rem, 5vw, 3rem); }
.hero-kicker {
  font-size: .74rem; letter-spacing: .17em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 600; margin-bottom: 1.4rem;
}
.hero-title {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(.6rem, 2vw, 1.4rem);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: .95;
}
.pole { font-size: clamp(2.1rem, 7.4vw, 4.6rem); }
.pole-word {
  display: inline-block;
  font-variation-settings: 'SOFT' 40, 'WONK' 1, 'opsz' 100;
  transition: transform .5s var(--ease-spring);
}
.pole--a { text-align: right; color: var(--abaco); }
.pole--z { text-align: left;  color: var(--zuzz); font-size: clamp(1.55rem, 5.3vw, 3.5rem); }
.hero-title:hover .pole--a .pole-word { transform: translateX(-6px) rotate(-1.4deg); }
.hero-title:hover .pole--z .pole-word { transform: translateX(6px) rotate(1.4deg); }

/* Su telefono i due poli vanno a capo: sono l'immagine del gioco, meritano
   tutta la larghezza invece di stringersi in tre colonne. */
@media (max-width: 40rem) {
  .hero-title { grid-template-columns: 1fr; gap: .3rem; }
  .pole--a, .pole--z { text-align: center; }
  .pole--a { font-size: clamp(2.6rem, 15vw, 4rem); }
  .pole--z { font-size: clamp(1.85rem, 10.6vw, 3rem); }
  .hero-thread svg { height: 26px; }
}

.hero-thread { position: relative; display: block; min-width: clamp(56px, 14vw, 150px); }
.hero-thread svg { width: 100%; height: 34px; overflow: visible; }
.thread-line {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 2 7;
  stroke-linecap: round;
  animation: threadRun 1.4s linear infinite;
}
@keyframes threadRun { to { stroke-dashoffset: -18; } }
.hero-thread-badge {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  display: grid; justify-items: center;
  padding: .3rem .6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}
.hero-thread-badge b { font-family: var(--font-mono); font-size: clamp(.7rem, 1.9vw, .88rem); font-weight: 700; }
.hero-thread-badge i {
  font-family: var(--font-ui); font-style: normal;
  font-size: .52rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 600;
}

.hero-lede {
  max-width: 46ch; margin: clamp(1.4rem, 4vw, 2.2rem) auto 0;
  color: var(--ink-soft); font-size: clamp(.95rem, .4vw + .85rem, 1.06rem); text-wrap: pretty;
}
.hero-lede em { font-family: var(--font-display); font-style: italic; font-weight: 600; color: var(--ink); }
.tag {
  font-weight: 700; padding: .04em .42em; border-radius: 6px; white-space: nowrap;
}
.tag--a { color: var(--abaco); background: var(--abaco-soft); }
.tag--z { color: var(--zuzz);  background: var(--zuzz-soft); }

/* ── carte modalità ────────────────────────────────────────────────────── */
.modes { display: grid; gap: .8rem; margin-bottom: 2.2rem; }
@media (min-width: 52rem) { .modes { grid-template-columns: repeat(3, 1fr); } }
.mode {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  text-align: left;
  padding: 1.05rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform .35s var(--ease-spring), box-shadow .35s var(--ease-out),
              border-color .35s var(--ease-out);
}
@media (min-width: 52rem) {
  .mode { grid-template-columns: 1fr; align-items: start; gap: .8rem; padding: 1.4rem 1.3rem 1.2rem; }
  .mode-go { position: absolute; right: 1.2rem; top: 1.35rem; }
}
.mode::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(120% 100% at 0% 0%, var(--zuzz-soft), transparent 62%);
  opacity: 0; transition: opacity .4s var(--ease-out); pointer-events: none;
}
.mode:hover, .mode:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--zuzz) 40%, var(--line));
}
.mode:hover::after { opacity: 1; }
.mode:active { transform: translateY(-1px) scale(.995); }
.mode-ico { flex: none; }
.mode-ico svg {
  width: 40px; height: 40px; fill: none; stroke: var(--zuzz);
  stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round;
}
.mode-ico .thin { stroke-width: 1.9; opacity: .6; }
.mode:hover .mode-ico svg { animation: nudge .5s var(--ease-spring); }
@keyframes nudge { 40% { transform: translateY(-3px) rotate(-4deg); } }
.mode-body { display: grid; gap: .28rem; }
.mode-name {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.18rem; letter-spacing: -.02em;
  font-variation-settings: 'SOFT' 30, 'opsz' 30;
}
.mode-desc { font-size: .855rem; color: var(--ink-soft); line-height: 1.45; text-wrap: pretty; }
.mode-desc i { font-style: normal; font-weight: 600; color: var(--ink); }
.mode-go { color: var(--ink-faint); font-size: 1.15rem; transition: transform .35s var(--ease-spring), color .3s; }
.mode:hover .mode-go { transform: translateX(5px); color: var(--zuzz); }

/* ── selettore livello ─────────────────────────────────────────────────── */
.level-picker { display: grid; justify-items: center; gap: .6rem; }
.level-label { font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-faint); font-weight: 700; }
.segmented {
  position: relative;
  display: grid; grid-auto-flow: column; gap: .15rem;
  padding: .3rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: inset 0 1px 3px var(--line-soft);
}
.segmented button {
  position: relative; z-index: 1;
  display: grid; justify-items: center; gap: .05rem;
  padding: .42rem clamp(.7rem, 3vw, 1.3rem);
  border-radius: 999px;
  color: var(--ink-soft);
  transition: color .3s var(--ease-out);
}
.segmented button b { font-size: .84rem; font-weight: 650; }
.segmented button i {
  font-style: normal; font-family: var(--font-mono);
  font-size: .62rem; color: var(--ink-faint); font-weight: 500;
}
.segmented button[aria-checked="true"] { color: var(--paper); }
.segmented button[aria-checked="true"] i { color: color-mix(in srgb, var(--paper) 70%, transparent); }
.segmented-pill {
  position: absolute; z-index: 0; top: .3rem; bottom: .3rem;
  border-radius: 999px;
  background: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: left .48s var(--ease-spring), width .48s var(--ease-spring);
}
.level-hint { font-size: .8rem; color: var(--ink-faint); margin: 0; text-align: center; min-height: 1.4em; }

/* ── testata gioco ─────────────────────────────────────────────────────── */
.play-head {
  display: flex; align-items: center; gap: .7rem;
  margin-bottom: clamp(1.2rem, 4vw, 2rem);
}
.backbtn {
  width: 38px; height: 38px; flex: none;
  display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 12px;
  color: var(--ink-soft); background: var(--surface);
  transition: transform .3s var(--ease-spring), background .25s, color .25s;
}
.backbtn:hover { transform: translateX(-3px); color: var(--ink); }
.backbtn svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.play-title {
  font-family: var(--font-display); font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  letter-spacing: -.028em; font-weight: 700;
  font-variation-settings: 'SOFT' 30, 'opsz' 40;
  margin-right: auto;
}
.play-chip {
  font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700;
  padding: .32rem .68rem; border-radius: 999px;
  background: var(--gold-soft); color: var(--gold-ink);
}
.play-chip--btn { background: var(--surface-2); color: var(--ink-faint); cursor: pointer; }
.play-chip--btn:hover { color: var(--zuzz); background: var(--zuzz-soft); }

/* ═══════════════════════════ IL CAMPO ═══════════════════════════════════ */
.field {
  position: relative;
  padding: clamp(1rem, 3vw, 1.5rem) clamp(1rem, 3vw, 1.6rem) clamp(.8rem, 2vw, 1.1rem);
  background: var(--surface);
  border: 1px solid var(--line);
  /* il fondo è chiuso dal pulsante «apri l'alfabeto»: i due pezzi sono
     un'unica scheda, il campo sopra e la sua chiave di lettura sotto. */
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  box-shadow: var(--shadow-md);
  margin-bottom: 0;
  overflow: hidden;
}
.field.is-tight { border-color: color-mix(in srgb, var(--gold) 45%, var(--line)); }

.field-heads {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: .5rem;
  margin-bottom: .95rem;
}
/* Su schermo stretto il conteggio si sposta su una riga sua, così i due
   estremi hanno tutta la larghezza per farsi leggere. */
@media (max-width: 36rem) {
  .field-heads {
    grid-template-columns: 1fr auto;
    grid-template-areas: 'count count' 'lo hi';
    row-gap: .7rem;
  }
  .bound--lo { grid-area: lo; }
  .bound--hi { grid-area: hi; }
  .field-count {
    grid-area: count; justify-self: center;
    display: flex; align-items: baseline; gap: .4rem;
  }
}
.bound { display: grid; gap: .1rem; min-width: 0; }
.bound--lo { text-align: left;  --c: var(--abaco); }
.bound--hi { text-align: right; --c: var(--zuzz); }
.bound-tag {
  font-size: .58rem; letter-spacing: .18em; text-transform: uppercase;
  font-weight: 700; color: var(--ink-faint);
}
.morph { position: relative; display: block; min-width: 0; }
.morph-cur, .morph-old {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(.92rem, 3.1vw, 1.4rem);
  font-weight: 700; letter-spacing: -.02em;
  font-variation-settings: 'SOFT' 40, 'WONK' 1, 'opsz' 40;
  color: var(--c, var(--ink));
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.morph-old { position: absolute; inset: 0; pointer-events: none; }
.morph-cur { animation: morphIn .5s var(--ease-out) backwards; }
.morph-old { animation: morphOut .42s var(--ease-out) forwards; }
@keyframes morphIn  { from { opacity: 0; transform: translateY(.55em) scale(.94); filter: blur(5px); } }
@keyframes morphOut { to   { opacity: 0; transform: translateY(-.55em) scale(1.05); filter: blur(5px); } }

.field-count {
  display: grid; justify-items: center; gap: 0;
  padding: .3rem .75rem;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  transition: transform .5s var(--ease-spring), background .4s, border-color .4s;
}
.field-count.is-pop { animation: countPop .55s var(--ease-spring); }
@keyframes countPop { 35% { transform: scale(.86); } }
.field-count b {
  font-family: var(--font-mono); font-weight: 700;
  font-size: clamp(.95rem, 3vw, 1.25rem); line-height: 1.15;
  font-variant-numeric: tabular-nums;
}
.field-count i {
  font-style: normal; font-size: .53rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-faint); font-weight: 700; white-space: nowrap;
}
.field.is-tight .field-count { background: var(--gold-soft); border-color: color-mix(in srgb, var(--gold) 35%, transparent); }
.field.is-tight .field-count b { color: var(--gold-ink); }

.field-track {
  position: relative;
  height: 52px;
  border-radius: 14px;
  /* Fondo liscio. Prima c'era una griglia fissa ogni 4%: non voleva dire
     niente (il vocabolario non è distribuito uniformemente) e sotto la parte
     esclusa sembrava una tabella rotta. Le tacche che contano sono i rail,
     allineati alle etichette dell'alfabeto qui sotto. */
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}
@media (max-width: 34rem) { .field-track { height: 44px; } }

/* Le due zone escluse, tinte del lato che le ha escluse: a sinistra il blu di
   abaco ("prima"), a destra il rosso di zuzzurellone ("dopo"). È l'unica cosa
   che rende leggibile a colpo d'occhio da che parte si è ristretto il campo. */
.field-out {
  position: absolute; top: 0; bottom: 0;
  pointer-events: none;
}
.field-out--l { left: 0;  width: 0; background: linear-gradient(90deg, color-mix(in srgb, var(--abaco) 30%, transparent), color-mix(in srgb, var(--abaco) 12%, transparent)); }
.field-out--r { right: 0; left: 100%; background: linear-gradient(90deg, color-mix(in srgb, var(--zuzz) 12%, transparent), color-mix(in srgb, var(--zuzz) 30%, transparent)); }

/* Hairline dentro la traccia, una per etichetta dell'alfabeto: lega la barra
   alla scala sotto, così si legge *dove* sta il campo e non solo quanto è largo. */
.field-rails { position: absolute; inset: 0; pointer-events: none; }
.rail {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: var(--line);
  opacity: .55;
}

.field-span {
  position: absolute; top: 0; bottom: 0;
  left: 0; width: 100%;
  border-radius: 12px;
  /* Il gradiente è dipinto nello spazio della *traccia*, non del blocco:
     background-size e position vengono ricalcolati a ogni frame in app.js.
     Altrimenti un intervallo stretto ripartiva da capo col blu di abaco pur
     stando in fondo alla z -- il colore mentiva sulla posizione. */
  background-image: linear-gradient(90deg, var(--abaco), var(--gold) 54%, var(--zuzz));
  background-repeat: no-repeat;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--ink) 12%, transparent),
              0 6px 18px -6px color-mix(in srgb, var(--zuzz) 55%, transparent);
  /* left/width sono pilotati fotogramma per fotogramma da app.js con un
     easing elastico scritto a mano: niente transizioni CSS, si darebbero
     fastidio a vicenda. */
  min-width: 3px;
}
.field-span::before {
  content: ''; position: absolute; inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,.28), transparent 55%);
}
.field-span::after {
  content: ''; position: absolute; inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  transform: translateX(-100%);
  opacity: 0;
}
.field-span.is-sweep::after { animation: sweep .85s var(--ease-out); }
@keyframes sweep { 0% { opacity: .9; transform: translateX(-100%); } 100% { opacity: 0; transform: translateX(100%); } }
.field-span-edge {
  position: absolute; top: -2px; bottom: -2px; width: 2px;
  background: color-mix(in srgb, var(--ink) 55%, transparent);
  opacity: .35;
}
.field-span-edge--l { left: 0; } .field-span-edge--r { right: 0; }

.field-marks { position: absolute; inset: 0; pointer-events: none; }
.mark {
  position: absolute; top: 0; bottom: 0; width: 2px;
  margin-left: -1px;
  background: var(--mc, var(--ink));
  opacity: .55;
  transform-origin: bottom;
  animation: markDrop .5s var(--ease-spring) backwards;
  transition: opacity .5s var(--ease-out);
}
.mark::after {
  content: ''; position: absolute; top: -3px; left: 50%;
  width: 7px; height: 7px; margin-left: -3.5px;
  border-radius: 50%; background: var(--mc, var(--ink));
}
.mark--a { --mc: var(--abaco); }
.mark--z { --mc: var(--zuzz); }
.mark--hit { --mc: var(--green); opacity: 1; width: 3px; }
.mark.is-out { opacity: 0; }
@keyframes markDrop { from { transform: scaleY(0); opacity: 0; } }

.field-scale {
  position: relative;
  /* Due righe: le etichette che non stanno affiancate sulla stessa riga
     vanno su quella sotto invece di sparire — vedi thinOut() in app.js. */
  height: 35px;
  margin-top: .5rem;
}
.tick {
  position: absolute;
  top: calc(var(--row, 0) * 13px);
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: .62rem; font-weight: 600;
  color: var(--ink-soft, var(--ink-faint));
  letter-spacing: .02em;
  white-space: nowrap;
  animation: tickIn .45s var(--ease-out) backwards;
  animation-delay: calc(var(--t, 0) * 12ms);
}
.tick::before {
  /* Le etichette di riga 1 sono più lontane dalla barra: il trattino si
     allunga per raggiungerla comunque, così resta chiaro a quale punto
     dell'intervallo appartiene l'etichetta. */
  content: ''; position: absolute; left: 50%;
  top: calc(-6px - var(--row, 0) * 13px);
  width: 1px; height: calc(4px + var(--row, 0) * 13px); background: var(--line);
}
/* l'etichetta sotto un estremo del campo si accende */
.tick.is-in { color: var(--ink); }
.tick.is-hot { color: var(--ink); font-weight: 700; }
@keyframes tickIn { from { opacity: 0; transform: translateX(-50%) translateY(-4px); } }

/* Vive su una riga sua sotto la scala: così non finisce mai sopra
   un'etichetta dell'alfabeto, per quanto stretto sia l'intervallo. */
.field-zoom {
  width: fit-content;
  margin: .1rem 0 0 auto;
  font-family: var(--font-mono); font-size: .58rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--gold-ink);
  padding: .18rem .5rem; border-radius: 999px;
  background: var(--gold-soft);
  opacity: 0; transform: translateY(4px);
  transition: opacity .4s var(--ease-out), transform .4s var(--ease-spring);
}
.field-zoom.is-on { opacity: 1; transform: none; }

/* ═══════════════════════ L'ALFABETO APERTO ══════════════════════════════
   La scala sotto la barra è per forza diradata: sotto zoom mostra prefissi
   e qualche lettera sparisce. Questo pannello è la stessa informazione
   scritta per esteso — una casella per lettera, con quante parole restano
   in gioco, quante ne ha in tutto e quanto pesa sul vocabolario.
   Quando il campo entra dentro una sola lettera scende di un livello e
   passa ai secondi caratteri, poi ai terzi: il gioco reso visibile.
  ─────────────────────────────────────────────────────────────────────── */
.alfa { margin: 0 0 clamp(1.1rem, 3vw, 1.8rem); }
/* Niente entrata a sé: la striscia è il bordo inferiore della scheda del
   campo, entra con lei. Serve anche a non lasciarle un filter addosso —
   basta quello a rendere l'elemento il blocco contenitore dei figli
   position:fixed, e sul telefono il pannello non arriverebbe più a fondo
   schermo. */
.screen.is-entering > .alfa { animation: none; }

.alfa-toggle {
  display: flex; align-items: center; gap: .5rem;
  width: 100%;
  padding: .62rem clamp(1rem, 3vw, 1.6rem);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-top: 1px solid var(--line-soft);
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  color: var(--ink-soft);
  font-size: .78rem; font-weight: 650; letter-spacing: .01em;
  box-shadow: var(--shadow-sm);
  transition: color .25s var(--ease-out), background .25s var(--ease-out);
}
.alfa-toggle:hover { color: var(--ink); background: var(--surface-2); }
.alfa-chev {
  width: 17px; height: 17px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 2.1;
  stroke-linecap: round; stroke-linejoin: round;
  transition: transform .42s var(--ease-spring);
}
.alfa.is-open .alfa-chev { transform: rotate(180deg); }
.alfa-toggle-hint {
  margin-left: auto;
  font-family: var(--font-mono); font-size: .66rem; font-weight: 500;
  color: var(--ink-faint); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}

/* Apertura: da 0fr a 1fr, così l'altezza la decide il contenuto e non un
   max-height inventato che taglierebbe le griglie lunghe. */
.alfa-panel {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows .48s var(--ease-soft), opacity .3s var(--ease-out);
}
.alfa.is-open .alfa-panel { grid-template-rows: 1fr; opacity: 1; }
.alfa-sheet {
  min-height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: visibility 0s .48s;
}
.alfa.is-open .alfa-sheet { visibility: visible; transition-delay: 0s; }
.alfa-grab, .alfa-close { display: none; }
.alfa-scrim { display: none; }

.alfa-inner {
  padding: .9rem clamp(1rem, 3vw, 1.6rem) 1.1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.alfa.is-open .alfa-toggle { border-radius: 0; }
.alfa-top {
  display: flex; align-items: baseline; gap: .8rem; flex-wrap: wrap;
  padding: 0 .15rem;
}
.alfa-cap { margin: 0; font-size: .82rem; color: var(--ink-soft); flex: 1; min-width: 12rem; text-wrap: pretty; }
.alfa-cap b { color: var(--ink); font-family: var(--font-mono); font-weight: 700; }
.alfa-cap em {
  font-family: var(--font-display); font-style: italic; font-weight: 600;
  color: var(--zuzz); font-size: 1.02em;
}
.alfa-tools { display: flex; align-items: center; gap: .5rem; margin-left: auto; }
.alfa-opt {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .66rem; letter-spacing: .1em; text-transform: uppercase;
  font-weight: 700; color: var(--ink-faint);
  padding: .25rem .55rem; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line-soft);
  cursor: pointer; white-space: nowrap;
  transition: color .25s, border-color .25s;
}
.alfa-opt:hover { color: var(--ink-soft); }
.alfa-opt input { accent-color: var(--zuzz); width: 13px; height: 13px; margin: 0; cursor: pointer; }
.alfa-opt:has(input:checked) { color: var(--ink-soft); border-color: var(--line); }

/* le lettere già fissate: tutto → r → re → rec */
.alfa-crumbs {
  list-style: none; margin: .55rem 0 0; padding: 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: .3rem;
  font-family: var(--font-mono); font-size: .68rem;
}
.alfa-crumbs li {
  display: flex; align-items: center; gap: .3rem;
  color: var(--ink-faint);
}
.alfa-crumbs li::after { content: '›'; color: var(--line); }
.alfa-crumbs li:last-child::after { content: ''; }
.alfa-crumbs b {
  font-weight: 700;
  padding: .12rem .45rem; border-radius: 6px;
  background: var(--surface-2); color: var(--ink-soft);
}
.alfa-crumbs li:last-child b { background: var(--gold-soft); color: var(--gold-ink); }

/* la griglia delle lettere */
.alfa-grid {
  list-style: none; margin: .7rem 0 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8.2rem, 1fr));
  gap: .38rem;
}
.alfa-cell {
  position: relative;
  display: grid;
  grid-template-columns: 1.55rem 1fr;
  grid-template-areas: 'key num' 'key meter' 'key tag';
  align-items: center;
  gap: .05rem .55rem;
  padding: .48rem .6rem;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  animation: alfaIn .38s var(--ease-spring) backwards;
  animation-delay: calc(var(--i, 0) * 9ms);
}
@keyframes alfaIn { from { opacity: 0; transform: translate3d(0, 7px, 0) scale(.97); } }

.alfa-key {
  grid-area: key;
  align-self: center; justify-self: center;
  font-family: var(--font-display);
  font-size: 1.42rem; font-weight: 800; line-height: 1;
  letter-spacing: -.03em;
  font-variation-settings: 'SOFT' 40, 'WONK' 1, 'opsz' 60;
  color: var(--ink);
}
.alfa-key sup {
  font-family: var(--font-mono); font-size: .38em; font-weight: 700;
  vertical-align: super; color: var(--ink-faint); letter-spacing: 0;
}
.alfa-num {
  grid-area: num;
  font-family: var(--font-mono); font-size: .74rem; font-weight: 700;
  font-variant-numeric: tabular-nums; line-height: 1.25;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.alfa-num em { font-style: normal; font-weight: 500; font-size: .84em; color: var(--ink-faint); }
.alfa-meter {
  grid-area: meter;
  position: relative; height: 6px; margin: .2rem 0;
  border-radius: 999px;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line-soft);
  overflow: hidden;
}
.alfa-meter i {                    /* quanto pesa la lettera sul vocabolario */
  position: absolute; inset: 0 auto 0 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink) 16%, transparent);
  transform-origin: left;
  animation: segGrow .55s var(--ease-spring) backwards;
  animation-delay: calc(var(--i, 0) * 9ms + 60ms);
}
.alfa-meter i b {                  /* la parte ancora in gioco */
  position: absolute; inset: 0 auto 0 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--abaco), var(--zuzz));
}
.alfa-tag {
  grid-area: tag;
  font-size: .55rem; letter-spacing: .11em; text-transform: uppercase;
  font-weight: 700; color: var(--ink-faint);
  display: flex; align-items: center; gap: .25rem;
  white-space: nowrap;
}

/* — stati — mai solo colore: c'è sempre l'etichetta e, per le escluse,
   la lettera barrata e il pallino spento. */
.alfa-cell--dentro {
  background: var(--surface);
  border-color: color-mix(in srgb, var(--green) 30%, var(--line-soft));
}
.alfa-cell--dentro .alfa-tag { color: var(--green); }
.alfa-cell--parziale {
  border-color: color-mix(in srgb, var(--gold) 55%, transparent);
  border-style: dashed;
  background: linear-gradient(180deg, var(--gold-soft), transparent 120%), var(--surface);
}
.alfa-cell--parziale .alfa-tag { color: var(--gold-ink); }
/* Escluse: spente, ma leggibili. L'opacità sull'intera casella le
   cancellava; meglio togliere il fondo e scurire i singoli pezzi. */
.alfa-cell--prima, .alfa-cell--dopo {
  background: transparent;
  border-style: dashed;
  border-color: var(--line-soft);
}
.alfa-cell--prima .alfa-key, .alfa-cell--dopo .alfa-key {
  color: color-mix(in srgb, var(--ink) 46%, transparent);
  text-decoration: line-through;
  text-decoration-thickness: 2px;
  text-decoration-color: color-mix(in srgb, var(--ink) 55%, transparent);
}
.alfa-cell--prima .alfa-num, .alfa-cell--dopo .alfa-num { color: var(--ink-faint); font-weight: 500; }
.alfa-cell--prima .alfa-meter, .alfa-cell--dopo .alfa-meter { opacity: .7; }
.alfa-cell--prima .alfa-meter i b, .alfa-cell--dopo .alfa-meter i b { display: none; }
.alfa-cell--prima .alfa-tag { color: var(--abaco); }
.alfa-cell--dopo .alfa-tag { color: var(--zuzz); }
.alfa-cell--vuota .alfa-key { color: var(--ink-faint); }
/* la voce «nessuna lettera dopo»: la parola che è esattamente il prefisso */
.alfa-cell--esatta { grid-column: 1 / -1; }
.alfa-cell--esatta .alfa-key { color: var(--ink-faint); }
.alfa-cell--esatta .alfa-tag { text-transform: none; letter-spacing: .02em; font-size: .6rem; }

.alfa.is-nocount .alfa-num { visibility: hidden; }

.alfa-legend {
  margin: .8rem 0 0; padding-left: .8rem;
  border-left: 2px solid var(--gold);
  font-size: .74rem; color: var(--ink-faint); text-wrap: pretty;
}
.alfa-legend b { color: var(--ink-soft); }

/* la traccia diventa cliccabile: apre lo stesso pannello del pulsante */
.field-track { cursor: zoom-in; }
.field.is-alfa-open .field-track { cursor: zoom-out; }

/* — telefono: pannello a scomparsa dal basso, a tutta larghezza — */
@media (max-width: 46rem) {
  .alfa-scrim {
    display: block;
    position: fixed; inset: 0; z-index: 55;
    background: color-mix(in srgb, var(--paper-deep) 62%, transparent);
    backdrop-filter: blur(2px);
    opacity: 0; visibility: hidden;
    transition: opacity .35s var(--ease-out), visibility 0s .35s;
  }
  .alfa.is-open .alfa-scrim { opacity: 1; visibility: visible; transition-delay: 0s; }

  .alfa-panel {
    position: fixed; z-index: 56;
    inset: auto 0 0 0;
    display: block; opacity: 1;
    transform: translateY(101%);
    visibility: hidden;
    transition: transform .44s var(--ease-out), visibility 0s .44s;
  }
  .alfa.is-open .alfa-panel { transform: none; visibility: visible; transition-delay: 0s; }
  .alfa-sheet {
    visibility: visible;
    max-height: min(80svh, 40rem);
    overflow-y: auto;
    overscroll-behavior: contain;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    box-shadow: var(--shadow-lg);
    transition: none;
  }
  .alfa-inner {
    padding: .5rem clamp(.9rem, 4vw, 1.4rem) calc(1.2rem + env(safe-area-inset-bottom));
    border: 0; border-top: 1px solid var(--line);
    border-radius: var(--r-lg) var(--r-lg) 0 0;
    box-shadow: none;
    min-height: 100%;
  }
  .alfa.is-open .alfa-toggle { border-radius: 0 0 var(--r-lg) var(--r-lg); }
  .alfa-grab {
    display: block;
    width: 38px; height: 4px; margin: .1rem auto 0;
    border-radius: 999px; background: var(--line);
  }
  .alfa-top { position: sticky; top: 0; z-index: 1;
              background: var(--surface); padding-top: .5rem; padding-bottom: .4rem; }
  .alfa-close {
    display: grid; place-items: center;
    width: 30px; height: 30px; border-radius: 9px;
    background: var(--surface-2); color: var(--ink-soft);
  }
  .alfa-close svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; }
  .alfa-grid { grid-template-columns: repeat(auto-fill, minmax(7.4rem, 1fr)); }
}
@media (max-width: 24rem) {
  .alfa-grid { grid-template-columns: repeat(auto-fill, minmax(6.4rem, 1fr)); }
  .alfa-cell { grid-template-columns: 1.3rem 1fr; padding: .4rem .45rem; }
  .alfa-key { font-size: 1.2rem; }
}

/* ── pannelli ──────────────────────────────────────────────────────────── */
.panel[hidden] { display: none; }

.guessbar { display: flex; gap: .55rem; margin-bottom: 1.1rem; }
.inputwrap { position: relative; flex: 1; min-width: 0; }
.inputwrap input {
  width: 100%;
  padding: .82rem 1.05rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 3.2vw, 1.22rem);
  font-weight: 600; letter-spacing: -.01em;
  font-variation-settings: 'SOFT' 30, 'opsz' 30;
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: 15px;
  box-shadow: var(--shadow-sm);
  transition: border-color .25s var(--ease-out), box-shadow .25s var(--ease-out), transform .2s;
}
.inputwrap input::placeholder { color: var(--ink-faint); font-weight: 400; font-style: italic; }
.inputwrap input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 4px var(--gold-soft);
}
.inputwrap input:disabled { opacity: .5; }
.guessbar.is-bad .inputwrap { animation: shake .45s var(--ease-out); }
.guessbar.is-bad input { border-color: var(--zuzz); box-shadow: 0 0 0 4px var(--zuzz-soft); }
.guessbar.is-good input { border-color: var(--green); box-shadow: 0 0 0 4px color-mix(in srgb, var(--green) 16%, transparent); }
@keyframes shake {
  10%, 90% { transform: translateX(-4px); }
  30%, 70% { transform: translateX(6px); }
  50%      { transform: translateX(-3px); }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  padding: .8rem 1.25rem;
  border-radius: 15px;
  font-weight: 650; font-size: .95rem;
  background: var(--ink); color: var(--paper);
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease-spring), box-shadow .3s var(--ease-out), filter .25s, opacity .25s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2.1; stroke-linecap: round; stroke-linejoin: round; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0) scale(.97); }
.btn:disabled { opacity: .4; pointer-events: none; }
.btn--big { padding: .95rem 1.9rem; font-size: 1.02rem; border-radius: 17px; }
.btn--ghost { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
.btn--a { background: var(--abaco); color: #fff; }
.btn--z { background: var(--zuzz);  color: #fff; }
.btn--yes { background: var(--gold); color: #1a1206; }
:root[data-theme="dark"] .btn--a, :root[data-theme="dark"] .btn--z { color: #0e0c0a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .btn--a,
  :root:not([data-theme="light"]) .btn--z { color: #0e0c0a; }
}

.counters { display: flex; gap: .5rem; margin-bottom: 1.1rem; }
.counters--wide { flex: 1; }
.counter {
  flex: 1;
  display: grid; justify-items: center; gap: .05rem;
  padding: .6rem .5rem;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
}
.counter b {
  font-family: var(--font-mono); font-weight: 700;
  font-size: clamp(1.1rem, 4vw, 1.5rem); line-height: 1.1;
  font-variant-numeric: tabular-nums;
  display: block;
}
.counter i {
  font-style: normal; font-size: .58rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-faint); font-weight: 700;
}
.counter--ghost { background: transparent; border-style: dashed; }
.counter--ghost b { color: var(--ink-faint); }
.odo.is-tick { animation: odoTick .45s var(--ease-spring); }
@keyframes odoTick {
  0%   { transform: translateY(.5em) scale(.8); opacity: .3; }
  100% { transform: none; opacity: 1; }
}

/* ── storico tentativi ─────────────────────────────────────────────────── */
.history { list-style: none; margin: 0; padding: 0; display: grid; gap: .38rem; }
.history li {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: .7rem;
  padding: .55rem .85rem;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  animation: rowIn .45s var(--ease-spring) backwards;
}
@keyframes rowIn { from { opacity: 0; transform: translate3d(0, -10px, 0) scale(.97); } }
.h-num {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 700;
  color: var(--ink-faint); min-width: 1.4em;
}
.h-word {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(.95rem, 3vw, 1.08rem); letter-spacing: -.015em;
  font-variation-settings: 'SOFT' 30, 'opsz' 24;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.h-dir {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .7rem; font-weight: 700; letter-spacing: .05em;
  padding: .2rem .55rem; border-radius: 999px;
}
.h-dir--a { color: var(--abaco); background: var(--abaco-soft); }
.h-dir--z { color: var(--zuzz);  background: var(--zuzz-soft); }
.h-dir--hit { color: var(--green); background: color-mix(in srgb, var(--green) 14%, transparent); }
.h-left { font-family: var(--font-mono); font-size: .68rem; color: var(--ink-faint); font-variant-numeric: tabular-nums; }
@media (max-width: 30rem) { .h-left { display: none; } }

/* ── computer ──────────────────────────────────────────────────────────── */
.cpu {
  display: grid; gap: 1.1rem; justify-items: center;
  padding: clamp(1.2rem, 4vw, 2rem) 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.1rem;
  text-align: center;
}
.cpu-think { display: grid; gap: .5rem; justify-items: center; width: 100%; }
.cpu-line { margin: 0; font-size: .87rem; color: var(--ink-soft); min-height: 1.4em; }
.cpu-line b { color: var(--ink); font-family: var(--font-mono); font-weight: 700; }
.cpu-word {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 8vw, 3.4rem);
  font-weight: 800; letter-spacing: -.04em; line-height: 1.05;
  font-variation-settings: 'SOFT' 50, 'WONK' 1, 'opsz' 120;
  color: var(--ink);
  word-break: break-word;
  max-width: 100%;
}
.cpu-word .morph-cur, .cpu-word .morph-old {
  font-size: inherit; font-weight: inherit; letter-spacing: inherit;
  font-variation-settings: inherit; white-space: normal;
}
.cpu.is-thinking .cpu-word { opacity: .35; }
.cpu-word { transition: opacity .3s; }
.cpu-actions { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; }
.cpu-actions[hidden] { display: none; }

/* ── sfida a tempo ─────────────────────────────────────────────────────── */
.timerow { display: flex; align-items: center; gap: .7rem; margin-bottom: 1rem; }
.timer {
  position: relative; flex: none;
  width: 74px; height: 74px;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 1.02rem; font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.timer-ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-bg, .ring-fg { fill: none; stroke-width: 5; stroke-linecap: round; }
.ring-bg { stroke: var(--line-soft); }
.ring-fg {
  stroke: var(--green);
  stroke-dasharray: 201.06;
  transition: stroke-dashoffset 1s linear, stroke .5s var(--ease-out);
}
.timer.is-urgent { color: var(--zuzz); animation: pulse 1s var(--ease-spring) infinite; }
.timer.is-urgent .ring-fg { stroke: var(--zuzz); }
@keyframes pulse { 50% { transform: scale(1.07); } }

.chips { display: flex; flex-wrap: wrap; gap: .38rem; margin-top: .3rem; min-height: 2rem; align-content: flex-start; }
.chip {
  font-family: var(--font-display); font-weight: 600; font-size: .92rem;
  font-variation-settings: 'SOFT' 30, 'opsz' 20;
  padding: .26rem .68rem; border-radius: 999px;
  border: 1px solid transparent;
  animation: chipIn .4s var(--ease-spring) backwards;
}
@keyframes chipIn { from { opacity: 0; transform: scale(.7) translateY(6px); } }
.chip--ok  { color: var(--green); background: color-mix(in srgb, var(--green) 12%, transparent); border-color: color-mix(in srgb, var(--green) 28%, transparent); }
.chip--ko  { color: var(--zuzz);  background: var(--zuzz-soft); border-color: color-mix(in srgb, var(--zuzz) 28%, transparent); text-decoration: line-through; }

/* ── feedback ──────────────────────────────────────────────────────────── */
.feedback {
  min-height: 1.6em; margin: .9rem 0 0;
  text-align: center; font-size: .88rem; font-weight: 550;
  color: var(--ink-soft);
  transition: color .25s;
}
.feedback.is-bad  { color: var(--zuzz); }
.feedback.is-good { color: var(--green); }
.feedback.is-flash { animation: fbFlash .5s var(--ease-spring); }
@keyframes fbFlash { from { opacity: 0; transform: translateY(6px) scale(.97); } }

/* ═══════════════════════════ RISULTATO ══════════════════════════════════ */
.result {
  position: relative;
  display: grid; justify-items: center; gap: .55rem;
  text-align: center;
  padding: clamp(1.6rem, 5vw, 3rem) clamp(1.1rem, 4vw, 2.4rem) clamp(1.6rem, 4vw, 2.2rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.result::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(90% 60% at 50% 0%, var(--gold-soft), transparent 70%);
}
.result > * { position: relative; }
.result-kicker { font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-faint); font-weight: 700; margin: 0; }
.result-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 7vw, 3rem); font-weight: 800; letter-spacing: -.04em;
  font-variation-settings: 'SOFT' 50, 'WONK' 1, 'opsz' 100;
  animation: popIn .7s var(--ease-spring) backwards;
}
@keyframes popIn { from { opacity: 0; transform: scale(.75) translateY(14px); } }
.result-word {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(1.4rem, 5.4vw, 2.2rem); font-weight: 600; letter-spacing: -.02em;
  color: var(--zuzz); margin: 0;
  animation: popIn .7s var(--ease-spring) .1s backwards;
  word-break: break-word;
}
.result-sub { color: var(--ink-soft); font-size: .93rem; margin: .15rem 0 0; max-width: 42ch; text-wrap: pretty; }
.result-sub b { color: var(--ink); }

.result-stats { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; margin: 1.1rem 0 .3rem; width: 100%; }
.rstat {
  min-width: 5.5rem;
  display: grid; gap: .05rem;
  padding: .6rem .9rem;
  background: var(--surface-2); border-radius: var(--r-md);
  animation: riseIn .5s var(--ease-out) backwards;
  animation-delay: calc(var(--i,0) * 70ms + .2s);
}
.rstat b { font-family: var(--font-mono); font-size: 1.35rem; font-weight: 700; line-height: 1.1; }
.rstat i { font-style: normal; font-size: .56rem; letter-spacing: .11em; text-transform: uppercase; color: var(--ink-faint); font-weight: 700; }
.rstat--win b { color: var(--green); }
.rstat--lose b { color: var(--zuzz); }

/* percorso: la sequenza degli intervalli */
.path { width: 100%; display: grid; gap: 3px; margin-top: 1.2rem; }
.path-row {
  position: relative; height: 13px;
  border-radius: 999px; background: var(--surface-2);
  overflow: hidden;
  animation: riseIn .5s var(--ease-out) backwards;
  animation-delay: calc(var(--i,0) * 45ms + .35s);
}
.path-seg {
  position: absolute; top: 0; bottom: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--abaco), var(--gold) 55%, var(--zuzz));
  min-width: 3px;
  animation: segGrow .6s var(--ease-spring) backwards;
  animation-delay: calc(var(--i,0) * 45ms + .4s);
}
@keyframes segGrow { from { transform: scaleX(0); } }
.path-seg { transform-origin: left; }
.path-caption { font-size: .74rem; color: var(--ink-faint); margin: .55rem 0 1.4rem; }
.result-actions { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; }
.sharebox {
  width: 100%; margin: 1rem 0 0; padding: .9rem 1rem;
  background: var(--surface-2); border-radius: var(--r-md);
  font-family: var(--font-mono); font-size: .74rem; line-height: 1.6;
  text-align: left; white-space: pre-wrap; word-break: break-word;
  color: var(--ink-soft);
  animation: riseIn .4s var(--ease-out);
}
.sharebox[hidden] { display: none; }

/* vittoria: piccola esplosione sobria */
.burst { position: absolute; left: 50%; top: 28%; width: 0; height: 0; pointer-events: none; }
.burst span {
  position: absolute; width: 7px; height: 7px; border-radius: 2px;
  background: var(--c); opacity: 0;
  animation: burst .95s var(--ease-out) forwards;
  animation-delay: var(--d);
}
@keyframes burst {
  0%   { opacity: 1; transform: translate3d(0,0,0) scale(.4) rotate(0deg); }
  100% { opacity: 0; transform: translate3d(var(--x), var(--y), 0) scale(1) rotate(var(--r)); }
}

/* ═══════════════════════════ DOCUMENTI ══════════════════════════════════ */
.screen--doc { max-width: 46rem; }
.doc { display: grid; gap: 1rem; }
.doc-block {
  padding: clamp(1.1rem, 3vw, 1.7rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.doc-block h3 {
  font-family: var(--font-display); font-size: 1.22rem; letter-spacing: -.025em;
  font-variation-settings: 'SOFT' 30, 'opsz' 30;
  margin-bottom: .6rem;
}
.doc-block p { color: var(--ink-soft); font-size: .93rem; text-wrap: pretty; }
.doc-block p:last-child { margin-bottom: 0; }
.doc-block b { color: var(--ink); }
.doc-block em { font-family: var(--font-display); font-style: italic; font-weight: 600; color: var(--ink); }
.doc-block code {
  font-family: var(--font-mono); font-size: .84em;
  background: var(--surface-2); padding: .1em .4em; border-radius: 5px;
}
.doc-list { margin: 0; display: grid; gap: .7rem; }
.doc-list dt {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  letter-spacing: -.02em; color: var(--ink);
  font-variation-settings: 'SOFT' 30, 'opsz' 20;
}
.doc-list dd { margin: .15rem 0 0; color: var(--ink-soft); font-size: .9rem; }
.doc-list dd i { font-style: normal; font-weight: 600; color: var(--ink); }
.doc-block--math { background: linear-gradient(160deg, var(--gold-soft), transparent 60%), var(--surface); }
.halving {
  font-family: var(--font-mono); font-size: .82rem; font-weight: 500;
  color: var(--ink); letter-spacing: -.01em;
  overflow-x: auto; white-space: nowrap; padding-bottom: .3rem;
  scrollbar-width: thin;
}
.halving span { color: var(--ink-faint); padding: 0 .35em; }
.halving b { color: var(--gold-ink); }
.doc-note { font-size: .84rem !important; border-left: 2px solid var(--gold); padding-left: .8rem; }
var { font-family: var(--font-mono); font-style: normal; font-size: .9em; }

/* ── statistiche ───────────────────────────────────────────────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(6.5rem, 1fr)); gap: .5rem; margin-top: .8rem; }
.stat-cell {
  display: grid; gap: .1rem; padding: .75rem .8rem;
  background: var(--surface-2); border-radius: var(--r-md);
}
.stat-cell b { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 700; line-height: 1.05; }
.stat-cell i { font-style: normal; font-size: .58rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); font-weight: 700; }
.bars { display: grid; gap: .3rem; margin-top: 1rem; }
.bar-row { display: grid; grid-template-columns: 3.6rem 1fr auto; align-items: center; gap: .6rem; font-size: .76rem; }
.bar-row > span:first-child { font-family: var(--font-mono); color: var(--ink-soft); text-align: right; font-size: .72rem; }
.bar-track { height: 20px; background: var(--surface-2); border-radius: 6px; overflow: hidden; }
.bar-fill {
  height: 100%; border-radius: 6px; min-width: 2px;
  background: linear-gradient(90deg, var(--abaco), var(--zuzz));
  transform-origin: left;
  animation: segGrow .7s var(--ease-spring) backwards;
  animation-delay: calc(var(--i,0) * 55ms);
}
.bar-fill.is-best { background: linear-gradient(90deg, var(--green), var(--gold)); }
.bar-row > span:last-child { font-family: var(--font-mono); color: var(--ink-faint); font-size: .72rem; min-width: 1.6em; }
.stat-empty { color: var(--ink-faint); font-size: .88rem; font-style: italic; }

/* ── loader ────────────────────────────────────────────────────────────── */
.loader {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  background: var(--paper);
  transition: opacity .55s var(--ease-out), visibility .55s;
}
body:not([data-loading]) .loader { opacity: 0; visibility: hidden; }
.loader-inner { display: grid; gap: .9rem; justify-items: center; width: min(20rem, 70vw); }
.loader-bar { width: 100%; height: 4px; border-radius: 999px; background: var(--line-soft); overflow: hidden; }
.loader-bar span {
  display: block; height: 100%; width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--abaco), var(--gold), var(--zuzz));
  transition: width .5s var(--ease-out);
}
.loader-text {
  margin: 0; font-family: var(--font-display); font-style: italic;
  font-size: .95rem; color: var(--ink-soft);
}
.loader.is-error .loader-text { color: var(--zuzz); font-style: normal; }

/* ── footer ────────────────────────────────────────────────────────────── */
.sitefoot {
  display: flex; gap: .8rem; flex-wrap: wrap; justify-content: center;
  padding: 1.4rem 1rem calc(1.6rem + env(safe-area-inset-bottom));
  font-size: .72rem; color: var(--ink-faint);
  border-top: 1px solid var(--line-soft);
  text-align: center;
}
.sitefoot b { color: var(--ink-soft); }
.sitefoot a { color: var(--ink-soft); text-decoration-color: var(--line); text-underline-offset: 3px; }
.sitefoot a:hover { color: var(--zuzz); }

/* ── meno movimento ────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    /* anche i ritardi vanno azzerati: con animation-fill-mode backwards una
       scaletta di 26 caselle resterebbe invisibile per un quarto di secondo,
       cioè proprio il lampeggio che chi chiede meno movimento vuole evitare. */
    animation-delay: 0ms !important;
    transition-duration: .01ms !important;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }
  .field-span { transition: left .01ms, width .01ms; }
  .backdrop-glow { animation: none; }
}


/* ═══════════════════════ GUIDA ══════════════════════════════════════════
   Indice, passi numerati ed elenchi puntati: elementi che le vecchie
   "Regole" non avevano perché erano quattro paragrafi. */
.doc-toc {
  display: flex; flex-wrap: wrap; gap: .4rem .5rem;
  margin: 0 0 1.6rem;
  padding: .9rem 1rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--surface-2);
}
.doc-toc a {
  font-size: .78rem; font-weight: 600;
  color: var(--ink-soft); text-decoration: none;
  padding: .28rem .6rem; border-radius: 999px;
  border: 1px solid transparent;
  transition: color .2s, background .2s, border-color .2s;
}
.doc-toc a:hover, .doc-toc a:focus-visible {
  color: var(--ink); background: var(--surface);
  border-color: var(--line);
}
.doc-steps { margin: .6rem 0 0; padding-left: 1.15rem; }
.doc-steps li { margin-bottom: .55rem; line-height: 1.6; }
.doc-steps li::marker { color: var(--gold-ink); font-weight: 700; }
.doc-bullets { margin: .4rem 0 0; padding-left: 1.15rem; list-style: none; }
.doc-bullets li { position: relative; margin-bottom: .6rem; line-height: 1.6; }
.doc-bullets li::before {
  content: ''; position: absolute; left: -1rem; top: .62em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--gold);
}
.doc-chip {
  font-family: var(--font-mono); font-size: .72em; font-weight: 700;
  padding: .1rem .4rem; border-radius: 999px;
  background: var(--gold-soft); color: var(--gold-ink);
  white-space: nowrap;
}
/* L'ancora non deve finire sotto la topbar fissa. */
.doc-block[id] { scroll-margin-top: 5rem; }


/* ═══════════════════════ RIQUADRI PUBBLICITARI ══════════════════════════
   Invisibili finché assets/ads.js non trova un publisher id: senza <html
   class="has-ads"> il riquadro non occupa nemmeno un pixel, così il sito
   non ha buchi in attesa di annunci che non arriveranno. */
.adslot { display: none; }
.has-ads .adslot {
  display: block;
  position: relative;
  margin: 2rem auto 0;
  width: 100%;
  max-width: 46rem;
  /* Spazio riservato prima che l'annuncio arrivi: senza, il testo salta. */
  min-height: 110px;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
  text-align: center;
  overflow: hidden;
}
.has-ads .adslot-tag {
  position: absolute; top: .25rem; left: 0;
  font-size: .55rem; letter-spacing: .16em; text-transform: uppercase;
  font-weight: 700; color: var(--ink-faint);
}
.has-ads .adslot .adsbygoogle { min-height: 90px; }
@media (min-width: 48rem) { .has-ads .adslot { min-height: 270px; } }

/* La testata di privacy.html usa un <a> al posto del <button>: senza questo
   eredita la sottolineatura dei link del documento. */
/* privacy.html e guida.html usano <a> dove il gioco usa <button>: senza
   questo ereditano sottolineatura e colore :visited dei link del documento. */
a.brand, a.backbtn, a.btn { text-decoration: none; }
a.brand, a.brand:visited { color: inherit; }
a.btn, a.btn:visited { color: inherit; }

/* ═══════════════════════ LA PAROLA DEL GIORNO ═══════════════════════════
   La scheda in cima alla home: si distingue dalle altre perché è l'unica
   che scade — e i tre pallini dicono a colpo d'occhio cosa manca oggi. */
.mode--daily {
  border-color: color-mix(in srgb, var(--gold) 40%, var(--line));
  background:
    linear-gradient(135deg, var(--gold-soft), transparent 45%),
    var(--surface);
}
.mode--daily .mode-ico { color: var(--gold-ink); }
.mode-badge {
  font-family: var(--font-mono); font-style: normal;
  font-size: .62em; font-weight: 700; letter-spacing: .02em;
  color: var(--gold-ink);
  padding: .1rem .4rem; border-radius: 999px;
  background: var(--gold-soft);
  vertical-align: .18em;
}
.daily-dots {
  display: flex; align-items: center; gap: .35rem;
  margin-top: .6rem;
}
.dot {
  display: grid; place-items: center;
  width: 22px; height: 22px; border-radius: 50%;
  font-style: normal;
  border: 1px solid var(--line);
  background: var(--surface-2);
  transition: background .3s, border-color .3s, color .3s;
}
.dot b {
  font-family: var(--font-mono); font-size: .6rem; font-weight: 700;
  text-transform: uppercase; color: var(--ink-faint);
}
.dot--win    { background: color-mix(in srgb, var(--green) 22%, transparent); border-color: color-mix(in srgb, var(--green) 55%, transparent); }
.dot--win b  { color: var(--green); }
.dot--doing  { background: var(--gold-soft); border-color: color-mix(in srgb, var(--gold) 55%, transparent); }
.dot--doing b{ color: var(--gold-ink); }
.dot--lost   { border-style: dashed; }
.daily-streak {
  margin-left: .3rem;
  font-size: .72rem; font-weight: 700;
  color: var(--gold-ink);
}
.result-next {
  margin: .2rem 0 1.2rem;
  font-family: var(--font-mono); font-size: .72rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
}

/* Condividi è il pulsante principale a fine partita: è l'unica cosa che
   porta gente nuova, e «Ancora» resta comunque a un dito di distanza. */
.btn--share svg { width: 1.05em; height: 1.05em; }

/* guida.html: la pagina statica non ha la barra delle azioni del gioco,
   quindi l'invito a giocare deve stare dentro il testo. */
.guide-cta { margin: 2rem 0 0; text-align: center; }
.btn--small { padding: .4rem .8rem; font-size: .78rem; }

/* La parola del giorno prende tutta la riga: è l'azione del giorno, non una
   delle quattro modalità — e in griglia a tre colonne una quarta scheda
   lascerebbe comunque un buco. */
@media (min-width: 48rem) { .mode--daily { grid-column: 1 / -1; } }