/* Tree World: landing. Colori e forme presi dall'interfaccia del gioco. */

@font-face {
  font-family: 'ObelixPro';
  src: url('../assets/fonts/ObelixPro.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('../assets/fonts/Nunito.woff2') format('woff2');
  font-weight: 200 1000;
  font-display: swap;
}

:root {
  --T: clamp(64px, 9vw, 136px);           /* larghezza del tronco */
  --B: clamp(260px, 38vw, 600px);          /* larghezza di un ramo */
  --attach: .28;                           /* dove comincia la corteccia del ramo, in tronchi dal centro del tronco */
  --space: #1a1f24;
  --panel: #183431;
  --panel-2: #20443f;
  --leaf: #8ee05b;
  --leaf-dark: #2e8a2a;
  --leaf-deep: #124a17;
  --sky-blue: #1aa6f0;
  --ink: #eef8e9;
  --ink-soft: #c4dcc4;
  --bark: #6b4223;
  --gold: #ffd24a;
  --title: 'ObelixPro', 'Arial Rounded MT Bold', 'Nunito', system-ui, sans-serif;
  --body: 'Nunito', ui-rounded, 'Arial Rounded MT Bold', system-ui, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  background: var(--space);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: clip;
}
img { display: block; max-width: none; }
a { color: inherit; }
[hidden] { display: none !important; }

/* ---------------------------------------------------------------- cielo */

.sky { position: fixed; inset: 0; overflow: hidden; z-index: -2; background: var(--space); }
.sky-col { position: absolute; left: 0; top: 0; width: 100%; will-change: transform; }
.sky-col img { width: 100%; height: auto; display: block; margin-top: -1px; }
.sky::after { /* velo che scurisce un po' per leggere i testi */
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(120% 80% at 50% 40%, transparent 40%, rgba(10, 16, 20, .35));
}
.fx { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 30; }

/* -------------------------------------------------------------- top bar */

.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.topbar-logo { opacity: 0; transform: translateY(-10px) scale(.8); transition: .5s cubic-bezier(.3, 1.6, .5, 1); }
body.scrolled .topbar-logo { opacity: 1; transform: none; }
.topbar-logo img { width: 56px; height: 56px; filter: drop-shadow(0 4px 6px rgba(0,0,0,.4)); }

.lang-switch {
  display: flex; gap: 4px; padding: 4px;
  background: rgba(24, 52, 49, .85); border-radius: 999px;
  box-shadow: 0 0 0 3px var(--leaf-dark), 0 0 0 5px var(--leaf-deep), 0 6px 16px rgba(0,0,0,.35);
  backdrop-filter: blur(6px);
}
.lang-switch button {
  font: 14px/1 var(--title); letter-spacing: .04em; color: var(--ink-soft);
  border: 0; background: transparent; border-radius: 999px; padding: 9px 14px; cursor: pointer;
}
.lang-switch button[aria-pressed="true"] {
  color: #fff; background: linear-gradient(#2ec0ff, #0a8ad6);
  box-shadow: inset 0 0 0 2px #fff;
}
.lang-switch button:focus-visible, .btn:focus-visible, .foot-links a:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

/* ------------------------------------------------------------ altimetro */

.hud {
  position: fixed; right: 18px; top: 50%; transform: translateY(-50%); z-index: 35;
  display: flex; flex-direction: column; align-items: flex-end; gap: 10px;
  opacity: 0; transition: opacity .5s; pointer-events: none;
}
body.scrolled .hud { opacity: 1; }
.hud-branch {
  font: 13px/1 var(--title); color: #fff; padding: 8px 12px; border-radius: 12px;
  background: rgba(24, 52, 49, .85); box-shadow: 0 0 0 3px var(--leaf-dark), 0 0 0 5px var(--leaf-deep);
}
.hud-branch b { color: var(--gold); font-weight: normal; display: inline-block; min-width: 2ch; text-align: right; }
.hud-layers { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; align-items: flex-end; position: relative; }
.hud-layers::before { /* il binario su cui scorre Patty */
  content: ''; position: absolute; right: -8px; top: 12px; bottom: 12px; width: 2px; border-radius: 2px; background: rgba(255,255,255,.18);
}
.hud-layers li {
  font: 11px/1 var(--title); letter-spacing: .06em; text-transform: uppercase;
  color: rgba(255,255,255,.5); position: relative; transition: color .35s, font-size .35s;
}
.hud-layers button {
  font: inherit; letter-spacing: inherit; text-transform: inherit; color: inherit; background: none; border: 0;
  padding: 6px 10px 6px 0; cursor: pointer; pointer-events: auto; text-shadow: 0 2px 3px rgba(0,0,0,.6);
  transition: transform .25s cubic-bezier(.3, 1.8, .5, 1), color .2s;
}
.hud-layers button:hover { color: #fff; transform: translateX(-4px); }
.hud-layers button:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; border-radius: 6px; }
.hud-layers li::after {
  content: ''; position: absolute; right: -10px; top: 50%; width: 6px; height: 6px; margin-top: -3px;
  border-radius: 50%; background: rgba(255,255,255,.35); transition: .35s;
}
.hud-layers li.passed::after { background: var(--leaf); }
.hud-layers li.on { color: #fff; font-size: 13px; }
.hud-layers li.on button { animation: hud-pop .5s cubic-bezier(.3, 1.8, .5, 1); }
.hud-layers li.on::after { background: var(--leaf); box-shadow: 0 0 10px var(--leaf); transform: scale(1.6); }
.hud-fill {
  position: absolute; width: 2px; border-radius: 2px; top: 0; height: 0;
  background: linear-gradient(var(--leaf), var(--gold)); box-shadow: 0 0 8px var(--leaf);
}
.hud-patty { position: absolute; width: 34px; height: 34px; left: 0; top: 0; pointer-events: none; filter: drop-shadow(0 0 6px rgba(255, 240, 160, .9)); }
@keyframes hud-pop { 0% { transform: scale(1); } 40% { transform: scale(1.25) translateX(-6px); } 100% { transform: scale(1); } }

/* -------------------------------------------------------------- pulsanti */

.btn {
  --c1: #2ec0ff; --c2: #0a86d4;
  display: inline-flex; align-items: center; justify-content: center;
  font: clamp(14px, 1.3vw, 17px)/1 var(--title); letter-spacing: .03em; color: #fff; text-decoration: none;
  padding: 16px 26px 15px; border-radius: 16px;
  background: linear-gradient(var(--c1), var(--c2));
  box-shadow: inset 0 0 0 3px #fff, 0 0 0 4px #3bbf3d, 0 0 0 7px #0f5a17, 0 7px 0 6px #0f5a17, 0 14px 22px rgba(0,0,0,.35);
  text-shadow: 0 2px 0 rgba(0,0,0,.25);
  transition: transform .18s cubic-bezier(.3, 1.8, .5, 1), filter .2s;
}
.btn:hover { transform: translateY(-3px) scale(1.03); filter: brightness(1.08); }
.btn:active { transform: translateY(3px) scale(.98); }
.btn-green { --c1: #8fe34f; --c2: #39a92b; }

/* ------------------------------------------------------------------ hero */

.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  padding: clamp(56px, 8vh, 110px) 16px 0; text-align: center;
  overflow: hidden;
}
.hero-copy { position: relative; z-index: 3; max-width: 760px; }
.hero-logo {
  width: clamp(120px, min(24vw, 26vh), 300px); height: auto; margin: 0 auto -4px;
  filter: drop-shadow(0 0 30px rgba(170, 255, 90, .35)) drop-shadow(0 12px 18px rgba(0,0,0,.45));
  animation: logo-in 1.4s cubic-bezier(.2, 1.4, .4, 1) both, float 6s ease-in-out 1.4s infinite;
}
.kicker {
  font: clamp(12px, 1.2vw, 14px)/1.2 var(--title); letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 10px; text-shadow: 0 2px 0 rgba(0,0,0,.45);
}
.hero .kicker { animation: rise .9s .5s both; }
.hero-title {
  font: clamp(28px, min(4.6vw, 6.4vh), 60px)/1.05 var(--title); margin: 0 0 12px; color: #fff;
  text-shadow: 0 3px 0 #0e2f2c, 0 10px 30px rgba(0,0,0,.5);
  animation: rise .9s .65s both;
}
.hero-title em { font-style: normal; color: #b9f04a; text-shadow: 0 3px 0 #0e2f2c, 0 0 26px rgba(185, 240, 74, .45); }
.hero-sub { max-width: 600px; margin: 0 auto 24px; color: #dce9ef; font-size: clamp(16px, 1.5vw, 19px); animation: rise .9s .8s both; }
.hero-ctas { display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; animation: rise .9s .95s both; }

.canopy {
  position: relative; z-index: 2; margin-top: auto;
  width: calc(var(--T) * 7.184); max-width: none;
  transform: translateX(calc(var(--T) * 7.184 * (0.5 - 0.5063)));
  animation: canopy-in 1.6s .2s cubic-bezier(.2, 1, .3, 1) both;
}
.canopy-img { width: 100%; height: auto; -webkit-mask-image: linear-gradient(#000 78%, transparent 99%); mask-image: linear-gradient(#000 78%, transparent 99%); filter: drop-shadow(0 -10px 40px rgba(0,0,0,.25)); }
.fruit { position: absolute; width: 6.5%; height: auto; transform-origin: 50% 0; animation: dangle 3.2s ease-in-out infinite; }
.f1 { left: 22%; top: 46%; }
.f2 { left: 41%; top: 30%; animation-delay: -.6s; }
.f3 { left: 63%; top: 38%; animation-delay: -1.2s; }
.f4 { left: 78%; top: 56%; animation-delay: -1.9s; }
.f5 { left: 12%; top: 66%; animation-delay: -2.4s; }

.fairy { position: absolute; left: 0; top: 0; z-index: 2; width: clamp(70px, 8vw, 110px); pointer-events: none; will-change: transform; }
.fairy-sprite { display: block; aspect-ratio: 1; background: url('../assets/ui/fairy_sheet.webp') 0 0 / 600% 100% no-repeat; }
.fairy .fairy-sprite { width: 100%; filter: drop-shadow(0 0 14px rgba(255, 240, 160, .7)); }

.scroll-cue {
  position: absolute; left: 50%; bottom: 18px; z-index: 5; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font: 11px/1 var(--title); letter-spacing: .2em; text-transform: uppercase; color: #fff;
  text-shadow: 0 2px 4px rgba(0,0,0,.6); transition: opacity .4s;
}
.scroll-cue i { width: 24px; height: 38px; border: 3px solid #fff; border-radius: 14px; position: relative; box-shadow: 0 2px 6px rgba(0,0,0,.4); }
.scroll-cue i::after { content: ''; position: absolute; left: 50%; top: 6px; width: 5px; height: 8px; margin-left: -2.5px; border-radius: 3px; background: #fff; animation: wheel 1.6s infinite; }
body.scrolled .scroll-cue { opacity: 0; }

/* ------------------------------------------------------- tronco e rami */

.hero { z-index: 2; }
.tree { position: relative; margin-top: -60px; padding-top: 60px; container-type: inline-size; }
.trunk {
  position: absolute; top: -260px; bottom: var(--trunk-end, 0px); left: 50%; width: var(--T); transform: translateX(-50%);
  background: url('../assets/tree/tree_trunk04.webp') center bottom / 100% auto repeat-y;
  filter: drop-shadow(0 0 24px rgba(0,0,0,.35));
  z-index: 1;
}
.limb {
  position: relative; --pt: clamp(50px, 9vh, 110px); padding: var(--pt) 0 clamp(70px, 12vh, 140px);
  /* Punto d'appoggio sul ramo (frazioni dell'immagine non specchiata) e rapporto altezza/larghezza */
  --px: .33; --py: .60; --ar: .7355;
}
.limb.fairy-limb { --px: .42; --py: .51; --ar: .6125; }
/* Il ramo sta sopra il tronco: la sua corteccia piena (dal 3.78% della
   larghezza, prima c'è la sfumatura della base) comincia a 0.2 tronchi dal
   centro, così l'attacco copre il bordo del tronco come nel gioco. */
.bough { position: relative; width: var(--B); --edge: calc(var(--T) * var(--attach)); --fade: calc(var(--B) * .0378); }
.right .bough { margin-left: calc(50% + var(--edge) - var(--fade)); }
.left .bough { margin-left: calc(50% - var(--edge) + var(--fade) - var(--B)); }
.branch-wrap { position: relative; z-index: 2; transform-origin: 0 50%; }
.left .branch-wrap { transform-origin: 100% 50%; }
.branch { width: 100%; height: auto; filter: drop-shadow(0 12px 14px rgba(0,0,0,.28)); }
.left .branch { transform: scaleX(-1); }

.critter {
  /* Ancorata con i margini (larghezza --w, rapporto altezza/larghezza --h dall'HTML):
     Safari su iPhone perdeva il translate e le creature finivano sotto il ramo. */
  position: absolute; --w: clamp(58px, calc(var(--B) * .21), 128px); width: var(--w); height: auto;
  top: calc(var(--B) * var(--ar) * var(--py)); left: calc(var(--px) * 100%); z-index: 3;
  margin: calc(var(--w) * var(--h, 1) * -.96) 0 0 calc(var(--w) * -.5); transform-origin: 50% 100%;
  filter: drop-shadow(0 6px 4px rgba(0,0,0,.3));
}
.left .critter { left: calc((1 - var(--px)) * 100%); }
.left .critter.c-main { transform: scaleX(-1); }
.critter.c-friend { left: calc((var(--px) + .35) * 100%); --w: clamp(48px, calc(var(--B) * .17), 104px); top: calc(var(--B) * var(--ar) * (var(--py) + .03)); }
.gift { position: absolute; z-index: 3; --w: clamp(34px, calc(var(--B) * .11), 70px); width: var(--w); top: calc(var(--B) * var(--ar) * (var(--py) + .05)); left: calc((var(--px) + .36) * 100%); margin: calc(var(--w) * var(--h, 1) * -1) 0 0 calc(var(--w) * -.5); }
.critter.poppy { --w: clamp(70px, calc(var(--B) * .25), 150px); }

/* Il cartello appeso al ramo, nello stile dei pannelli del gioco */
.sign {
  --W: min(470px, calc(50cqw - var(--T) * .5 - 40px));
  position: relative; z-index: 4; width: var(--W); margin-top: calc(var(--B) * var(--ar) * -.18);
  padding: 26px 28px 24px;
  background: linear-gradient(180deg, rgba(32, 68, 63, .96), rgba(22, 48, 45, .96));
  border-radius: 24px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.08), 0 0 0 4px var(--leaf), 0 0 0 8px var(--leaf-dark), 0 0 0 11px var(--leaf-deep), 0 28px 50px rgba(0,0,0,.45);
  transform-origin: 50% -60px;
}
.right .sign { margin-left: calc(var(--T) * (.488 - var(--attach)) + var(--fade) + 18px); }
.left .sign { margin-left: calc(var(--B) - var(--T) * (.488 - var(--attach)) - var(--fade) - 18px - var(--W)); }
.sign.wide { --W: min(620px, calc(50cqw - var(--T) * .5 - 40px)); }
.sign::before, .sign::after { /* le corde */
  content: ''; position: absolute; top: -66px; width: 7px; height: 70px; border-radius: 4px;
  background: repeating-linear-gradient(170deg, #c9a46a 0 6px, #9c7442 6px 10px);
  box-shadow: 0 2px 2px rgba(0,0,0,.3);
}
.sign::before { left: 18%; }
.sign::after { right: 18%; }
.sign h2 {
  font: clamp(22px, 2.3vw, 32px)/1.12 var(--title); margin: 0 0 12px; color: #fff;
  text-shadow: 0 3px 0 #0c2422, 0 0 18px rgba(142, 224, 91, .25);
}
.sign p { margin: 0 0 12px; color: var(--ink-soft); }
.sign p:last-child { margin-bottom: 0; }
.sign strong { color: #fff; }
.note { display: flex; align-items: center; gap: 10px; font-size: 15px; color: #fff !important; }
.note img { flex: none; }
.count { color: var(--gold); }

.layers-chips { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; counter-reset: lay; }
.layers-chips li {
  counter-increment: lay; font: 12px/1 var(--title); letter-spacing: .04em; color: #fff;
  padding: 8px 11px 7px; border-radius: 999px; background: rgba(255,255,255,.08);
  box-shadow: inset 0 0 0 2px rgba(142, 224, 91, .5);
}
.layers-chips li::before { content: counter(lay); color: var(--gold); margin-right: 6px; }

.rarity { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.rarity li { font: 12px/1 var(--title); padding: 8px 12px 7px; border-radius: 999px; color: #10221f; }
.r1 { background: #d6e3d4; } .r2 { background: #8ee05b; } .r3 { background: #51c6ff; }
.r4 { background: linear-gradient(90deg, #ffd24a, #ff9a3c); } .r5 { background: linear-gradient(90deg, #ff7ad9, #a77bff); }

.games { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; }
.game {
  text-align: center; padding: 14px 10px 12px; border-radius: 18px;
  background: rgba(255,255,255,.06); box-shadow: inset 0 0 0 2px rgba(142, 224, 91, .35);
  transition: transform .25s cubic-bezier(.3, 1.8, .5, 1), background .25s;
}
.game:hover { transform: translateY(-6px) rotate(-1.5deg); background: rgba(255,255,255,.1); }
.game img { height: 72px; width: auto; margin: 0 auto 6px; filter: drop-shadow(0 6px 6px rgba(0,0,0,.35)); }
.game h3 { font: 15px/1.15 var(--title); margin: 0 0 6px; color: #fff; }
.game p { font-size: 14px; line-height: 1.4; margin: 0; }

/* Nome dello strato e numero inciso sul tronco */
.layer-name {
  position: absolute; top: 46%; z-index: 0; pointer-events: none; white-space: nowrap;
  font: clamp(40px, 7.5vw, 124px)/1 var(--title); text-transform: uppercase; letter-spacing: .02em;
  color: rgba(255,255,255,.1); -webkit-text-stroke: 2px rgba(255,255,255,.28);
}
.right .layer-name { right: calc(50% + var(--T) * .9); text-align: right; }
.left .layer-name { left: calc(50% + var(--T) * .9); }
.carve {
  position: absolute; z-index: 2; left: 50%; top: calc(var(--pt) + var(--B) * var(--ar) * .69); transform: translate(-50%, -50%);
  font: calc(var(--T) * .36)/1 var(--title); color: #5a3418; opacity: .85;
  text-shadow: 0 2px 0 rgba(255, 220, 170, .35), 0 -1px 0 rgba(0,0,0,.4);
}

/* Corteo di creature */
.parade {
  position: relative; margin-top: clamp(40px, 7vh, 80px); overflow: hidden; z-index: 3;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.parade-track { display: flex; gap: 22px; width: max-content; padding: 28px 0 18px; animation: march 60s linear infinite; }
.parade:hover .parade-track { animation-play-state: paused; }
.bubble {
  flex: none; width: 104px; height: 104px; border-radius: 50%; display: grid; place-items: center;
  background: radial-gradient(circle at 50% 35%, rgba(255,255,255,.22), rgba(24, 52, 49, .92) 70%);
  box-shadow: 0 0 0 4px var(--ring, #8ee05b), 0 0 0 7px rgba(0,0,0,.35), 0 10px 18px rgba(0,0,0,.35);
  transition: transform .3s cubic-bezier(.3, 1.8, .5, 1);
}
.bubble:hover { transform: translateY(-8px) scale(1.08); }
.bubble img { max-width: 76px; max-height: 80px; width: auto; height: auto; }

/* ----------------------------------------------------------------- terra */

.ground { position: relative; }
.ground { padding-top: calc(clamp(40px, 8vh, 90px) + var(--seg-pad, 0px)); }
.stay {
  container-type: inline-size;
  position: relative; z-index: 3; width: min(760px, calc(100% - 32px)); margin: 0 auto;
  text-align: center; padding: clamp(28px, 4vw, 48px) clamp(18px, 4vw, 48px);
  background: linear-gradient(180deg, rgba(32, 68, 63, .95), rgba(18, 40, 37, .96));
  border-radius: 32px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.08), 0 0 0 5px var(--leaf), 0 0 0 10px var(--leaf-dark), 0 0 0 14px var(--leaf-deep), 0 30px 70px rgba(0,0,0,.5);
}
.stay-title {
  margin: 4px 0 10px; font: min(130px, 14.5cqi)/0.95 var(--title); letter-spacing: .01em; white-space: nowrap;
}
.stay-title span {
  display: inline-block;
  background: linear-gradient(180deg, #f4ff8a 0%, #b9f04a 40%, #5cc72a 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  -webkit-text-stroke: clamp(1.5px, .35vw, 4px) #17424a;
  paint-order: stroke fill;
  filter: drop-shadow(0 clamp(3px, .6vw, 8px) 0 #17424a) drop-shadow(0 18px 24px rgba(0,0,0,.4));
  animation: wave 2.4s ease-in-out infinite; animation-delay: calc(var(--i) * .09s);
}
.stay-title span.sp { width: .3em; }
.stay-text { max-width: 520px; margin: 0 auto 18px; color: var(--ink-soft); font-size: clamp(16px, 1.6vw, 19px); }
.badge-soon {
  display: inline-block; font: 14px/1 var(--title); letter-spacing: .14em; text-transform: uppercase; color: #10221f;
  padding: 11px 18px 10px; border-radius: 999px; background: linear-gradient(90deg, #ffd24a, #ff9a3c);
  box-shadow: 0 0 0 3px #fff3, 0 8px 18px rgba(0,0,0,.3); animation: pulse 2.2s ease-in-out infinite;
}

/* Prato con le misure della scena del gioco (scene_layout.dart): unità del mondo
   scalate col tronco (200.8 unità = --T), x dal centro del tronco, y in su dalla
   base del ceppo (--ground). */
.ground { --k: calc(var(--T) / 200.8); }
.meadow { position: relative; height: calc(var(--k) * 860); margin-top: 10px; }
.stump {
  position: absolute; z-index: 1; bottom: calc(var(--k) * 378);
  left: calc(50% - var(--k) * 618.3 * .5254); width: calc(var(--k) * 618.3); height: calc(var(--k) * 285);
}
.piece { position: absolute; z-index: 2; height: auto; left: calc(50% + var(--k) * var(--x)); bottom: calc(var(--k) * (378 + var(--y))); width: calc(var(--k) * var(--w)); }
/* Casa di Poppy al livello 1 (house_stage01): 406.7 x 279.2, base a (-245, -113) dal centro del ceppo */
.house-base { --x: -466.85; --y: 29.5; --w: 406.7; }
/* Tana: 122.5 x 177.5, a (140.08, -80) dal centro del ceppo */
.den { --x: 60.33; --y: 62.5; --w: 122.5; }
.grass {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 4; height: calc(var(--k) * 552);
  background: url('../assets/tree/foreground_grass.webp') center bottom / auto 100% repeat-x;
}
/* Le creature camminano davanti all'erba, coi piedi 127.5 unità sotto la base del ceppo */
.walkers { position: absolute; left: 0; right: 0; bottom: calc(var(--k) * (378 - 127.5)); height: 1px; z-index: 5; }
.walker { position: absolute; bottom: 0; left: 0; will-change: transform; }
.walker div { position: absolute; background-repeat: no-repeat; }
@keyframes spin { to { rotate: 360deg; } }

/* ---------------------------------------------------------- sottoterra */

.underground {
  position: relative; z-index: 5;
  margin-top: -2px;
  /* Strati di terra come nell'immagine, che resta una sola al centro */
  background: linear-gradient(#b27a46 0 150px, #a46d3d 150px 340px, #945f35 340px 470px, #6a4027 470px);
  padding: 36px 16px calc(330px + env(safe-area-inset-bottom));
}
.underground::after {
  content: ''; position: absolute; inset: 0; z-index: 0;
  background: url('../assets/tree/underground.webp') center -175px / 768px auto no-repeat;
  -webkit-mask-image: linear-gradient(90deg, transparent calc(50% - 384px), #000 calc(50% - 250px), #000 calc(50% + 250px), transparent calc(50% + 384px));
  mask-image: linear-gradient(90deg, transparent calc(50% - 384px), #000 calc(50% - 250px), #000 calc(50% + 250px), transparent calc(50% + 384px));
}
.underground::before { content: ''; position: absolute; inset: 0; z-index: 1; background: linear-gradient(rgba(40, 22, 10, .72), rgba(40, 22, 10, .45) 45%, rgba(40, 22, 10, 0) 70%); }
.foot-inner { text-shadow: 0 1px 3px rgba(0,0,0,.6); }
.foot-inner { position: relative; z-index: 2; max-width: 760px; margin: 0 auto; text-align: center; }
.foot-logo { width: 96px; height: 96px; margin: 0 auto 14px; }
.foot-links { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.foot-links a {
  font: 14px/1 var(--title); color: #fff; text-decoration: none; padding: 12px 18px 11px; border-radius: 14px;
  background: rgba(24, 52, 49, .9); box-shadow: 0 0 0 3px var(--leaf-dark), 0 0 0 5px var(--leaf-deep);
  transition: transform .2s cubic-bezier(.3, 1.8, .5, 1);
}
.foot-links a:hover { transform: translateY(-3px); }
.disclaimer { font-size: 14px; color: #d9c4ae; margin: 0 auto 10px; max-width: 600px; }
.copy { font-size: 13px; color: #b89c80; margin: 0; }

/* -------------------------------------------------------- entrate/anim */

.js .limb .branch-wrap { transform: scale(0, .5); opacity: 0; }
.js .limb .critter, .js .limb .gift { opacity: 0; }
.js .limb .sign { opacity: 0; transform: translateY(-30px) rotate(-6deg); }
.js .limb .layer-name { opacity: 0; transform: translateY(30px); }
.limb .layer-name { transition: opacity 1.2s .3s, transform 1.2s .3s cubic-bezier(.2, 1, .3, 1); }
.js .limb.in .layer-name { opacity: 1; transform: none; }
.limb.in .branch-wrap { animation: grow 1s cubic-bezier(.25, 1.5, .45, 1) both; }
.limb.in .critter { animation: drop .8s .7s cubic-bezier(.3, 1.6, .5, 1) both, breathe 2.6s 1.6s ease-in-out infinite; }
.limb.in .gift { animation: drop .8s .9s cubic-bezier(.3, 1.6, .5, 1) both; }
.limb.in .sign { animation: swing-in 1.6s .45s both, sway 6s 2.1s ease-in-out infinite; }

@keyframes grow { from { transform: scale(0, .5); opacity: 0; } 30% { opacity: 1; } to { transform: none; opacity: 1; } }
@keyframes drop { from { opacity: 0; translate: 0 -70px; } 60% { opacity: 1; } to { opacity: 1; translate: 0 0; } }
@keyframes breathe { 0%, 100% { scale: 1 1; } 50% { scale: 1.03 .965; } }
@keyframes swing-in {
  0% { opacity: 0; transform: translateY(-40px) rotate(-9deg); }
  20% { opacity: 1; transform: translateY(0) rotate(7deg); }
  40% { transform: rotate(-4.5deg); } 60% { transform: rotate(2.5deg); } 80% { transform: rotate(-1deg); }
  100% { opacity: 1; transform: none; }
}
@keyframes sway { 0%, 100% { transform: rotate(0deg); } 50% { transform: rotate(.7deg); } }
@keyframes logo-in { from { opacity: 0; transform: scale(.4) rotate(-8deg); } to { opacity: 1; transform: none; } }
@keyframes float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -10px; } }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes canopy-in { from { opacity: 0; transform: translateX(calc(var(--T) * 7.184 * (0.5 - 0.5063))) translateY(120px) scale(.92); } to { opacity: 1; } }
@keyframes dangle { 0%, 100% { rotate: -6deg; } 50% { rotate: 6deg; } }
@keyframes wheel { 0% { opacity: 1; transform: translateY(0); } 80% { opacity: 0; transform: translateY(12px); } 100% { opacity: 0; } }
@keyframes march { to { transform: translateX(-50%); } }
@keyframes wave { 0%, 100% { transform: translateY(0) rotate(0); } 25% { transform: translateY(-.12em) rotate(-3deg); } 50% { transform: translateY(0) rotate(0); } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.06); } }

/* -------------------------------------------------------------- mobile */

@media (max-width: 1200px) {
  .hud-layers, .hud-fill, .hud-patty { display: none; }
  .hud { top: auto; bottom: 16px; right: 16px; transform: none; }
  .layer-name { display: none; }
}
@media (max-width: 760px) {
  /* Sul telefono il ramo esce un po' dallo schermo (la pagina taglia
     l'eccedenza) per restare abbastanza grande; il blocco del ramo occupa
     tutta la larghezza, così il cartello sotto è centrato sullo schermo e
     creature e corde si misurano dal ramo. */
  :root { --T: 64px; --B: calc(50cqw + 28px); }
  body { font-size: 16px; }
  .limb { --pt: 56px; padding: var(--pt) 0 44px; }
  .bough, .right .bough, .left .bough { width: 100%; margin-left: 0; }
  .branch-wrap { width: var(--B); }
  .right .branch-wrap { margin-left: calc(50% + var(--edge) - var(--fade)); }
  .left .branch-wrap { margin-left: calc(50% - var(--edge) + var(--fade) - var(--B)); }
  /* --x: punto del ramo (frazione della sua lunghezza dal tronco). */
  .critter, .gift { --x: var(--px); }
  .critter.c-friend { --x: calc(var(--px) + .26); }
  /* Il regalo dal lato del tronco: oltre l'amico finirebbe fuori schermo. */
  .gift { --x: calc(var(--px) - .14); }
  .right .critter, .right .gift { left: calc(50% + var(--edge) - var(--fade) + var(--x) * var(--B)); }
  .left .critter, .left .gift { left: calc(50% - var(--edge) + var(--fade) - var(--x) * var(--B)); }
  .critter { --w: calc(var(--B) * .24); }
  .critter.c-friend { --w: calc(var(--B) * .2); }
  .critter.poppy { --w: calc(var(--B) * .28); }
  .gift { --w: calc(var(--B) * .13); }
  .sign, .sign.wide, .right .sign, .left .sign {
    --W: calc(100% - 32px); margin: calc(var(--B) * var(--ar) * -.12) auto 0;
  }
  .sign { padding: 22px 20px 20px; transform-origin: 50% -40px; }
  /* Corde sopra il ramo (non sul tronco), a 30% e 72% della sua lunghezza: il centro del cartello è il centro del tronco. */
  .sign::before, .sign::after { top: -54px; height: 58px; right: auto; }
  .right .sign::before { left: calc(50% + var(--edge) + var(--B) * .3); }
  .right .sign::after { left: min(calc(50% + var(--edge) + var(--B) * .72), calc(100% - 20px)); }
  .left .sign::before { left: calc(50% - var(--edge) - var(--B) * .3); }
  .left .sign::after { left: max(calc(50% - var(--edge) - var(--B) * .72), 12px); }
  .games { grid-template-columns: 1fr; }
  .game { display: grid; grid-template-columns: 64px 1fr; gap: 0 12px; text-align: left; align-items: center; }
  .game img { grid-row: span 2; height: 56px; margin: 0; }
  .bubble { width: 84px; height: 84px; }
  .bubble img { max-width: 60px; max-height: 64px; }
  .hero-ctas { gap: 18px; }
  .walker:nth-child(n+4) { display: none; }
}

/* Con "riduci movimento" si toglie solo lo scorrimento automatico della pagina:
   le animazioni del sito (creature, corteo, frutti) restano, sono parte del gioco. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------------- pagine legali */

.legal-page { min-height: 100svh; display: flex; flex-direction: column; }
.legal-page .sky::after { background: rgba(8, 20, 28, .25); }
.legal-wrap { flex: 1; width: min(860px, calc(100% - 32px)); margin: 96px auto 60px; }
.legal {
  padding: clamp(24px, 4vw, 48px);
  background: linear-gradient(180deg, rgba(32, 68, 63, .97), rgba(20, 44, 41, .97));
  border-radius: 28px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.08), 0 0 0 4px var(--leaf), 0 0 0 8px var(--leaf-dark), 0 0 0 11px var(--leaf-deep), 0 30px 60px rgba(0,0,0,.45);
}
.legal h1 { font: clamp(28px, 4vw, 44px)/1.1 var(--title); margin: 0 0 6px; color: #fff; text-shadow: 0 3px 0 #0c2422; }
.legal .updated { color: var(--gold); font: 13px/1 var(--title); letter-spacing: .06em; margin: 0 0 26px; }
.legal h2 { font: clamp(18px, 2vw, 22px)/1.2 var(--title); color: #fff; margin: 30px 0 10px; }
.legal p, .legal li { color: var(--ink-soft); }
.legal ul { padding-left: 22px; }
.legal li { margin-bottom: 6px; }
.legal strong { color: #fff; }
.legal a { color: #8fdcff; }
.legal table { width: 100%; border-collapse: collapse; margin: 10px 0 6px; font-size: 15px; }
.legal th, .legal td { text-align: left; padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,.12); vertical-align: top; }
.legal th { color: #fff; font-family: var(--title); font-weight: normal; font-size: 13px; letter-spacing: .04em; }
.legal .table-scroll { overflow-x: auto; }
.legal-back { display: inline-flex; margin-bottom: 22px; }
.legal-page .topbar-logo { opacity: 1; transform: none; }
.legal-page .underground { padding: 30px 16px calc(36px + env(safe-area-inset-bottom)); }
.legal-page .underground::after { display: none; }
.legal code { color: #fff; background: rgba(255,255,255,.1); padding: 2px 6px; border-radius: 6px; }