/* Lelly – amici per il peluche */

:root {
  --paper: #ffffff;
  --red: #ee1d24;          /* rosso del logo */
  --cocoa: #3b2a21;        /* inchiostro: marrone orsetto invece del nero */
  --cocoa-soft: #6b5344;
  --watermark: 0.17;       /* opacità dell'orso grande sullo sfondo */

  --font-letter: "Caveat", "Segoe Print", "Bradley Hand", cursive;
  --font-ui: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
  --letter-scale: 1;

  --fs: clamp(1.3rem, min(0.9rem + 1.2vw, 3.9vh), 2.1rem);
  --corner: clamp(88px, min(16vw, 27vh), 250px);
  --gutter: clamp(16px, 4vw, 56px);
  --footer-h: clamp(56px, 8vh, 80px);
}

/* Font alternativi (?font=patrick / ?font=elite) */
:root[data-font="patrick"] {
  --font-letter: "Patrick Hand", "Segoe Print", cursive;
  --letter-scale: 0.84;
}
:root[data-font="elite"] {
  --font-letter: "Special Elite", "Courier New", monospace;
  --letter-scale: 0.7;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  background: var(--paper);
  color: var(--cocoa);
  font-family: var(--font-ui);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

/* ---------- Orso grande in filigrana ---------- */

.bg-bear {
  position: fixed;
  z-index: 0;
  top: 7vh;
  left: 0;
  right: 0;
  width: min(58vw, 96vh);
  max-width: none;
  margin-inline: auto;
  opacity: var(--watermark);
  pointer-events: none;
  user-select: none;
  will-change: transform, opacity;
}

/* ---------- Pagina ---------- */

.stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--corner) minmax(0, 1fr) var(--corner);
  column-gap: clamp(12px, 2vw, 40px);
  align-content: center;
  padding: clamp(16px, 3vh, 48px) var(--gutter);
  text-align: center;
}

.corner-bear {
  grid-column: 1;
  grid-row: 1;
  align-self: start;
  width: 100%;
}

.corner-logo {
  position: relative;
  grid-column: 3;
  grid-row: 1;
  align-self: start;
  justify-self: end;
  width: 88%;
}

.tm {
  position: absolute;
  right: 26%;
  bottom: -2%;
  font: 800 clamp(0.7rem, 0.5rem + 0.6vw, 1.15rem)/1 var(--font-ui);
  color: var(--cocoa);
  letter-spacing: 0.02em;
}

/* ---------- Lettera ---------- */

.letter {
  margin: 0;
  font-family: var(--font-letter);
  font-size: calc(var(--fs) * var(--letter-scale));
  font-weight: 500;
  line-height: 1.32;
  text-wrap: balance;
}

.line { display: block; }

.letter-open {
  grid-column: 2;
  grid-row: 1;
  align-self: end;
}

.letter-body {
  grid-column: 1 / -1;
  grid-row: 2;
  justify-self: center;
  max-width: 38em;
  margin-top: 1.1em;
}

.signature {
  grid-column: 1 / -1;
  grid-row: 3;
  margin-top: 0.75em;
  font-size: calc(var(--fs) * var(--letter-scale) * 1.3);
  font-weight: 700;
  color: var(--red);
}

/* Lettere per l'effetto macchina da scrivere */
.w { white-space: nowrap; }

.ch {
  position: relative;
  transition: opacity 0.12s linear;
}

.ch.caret::after {
  content: "";
  position: absolute;
  left: 100%;
  top: 0.2em;
  height: 1em;
  width: max(2px, 0.07em);
  margin-left: 0.05em;
  border-radius: 1px;
  background: var(--red);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ---------- Footer ---------- */

.info {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  min-height: var(--footer-h);
  padding: 14px var(--gutter);
  background: var(--red);
  color: #fff;
  font-size: clamp(0.85rem, 0.8rem + 0.2vw, 1rem);
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
}

.info p { margin: 0; }

.info a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.info a:hover { text-decoration-thickness: 2px; }

.info a:focus-visible { outline-color: #fff; }

/* ---------- Pulsante "salta" ---------- */

.skip {
  display: none;
  position: fixed;
  z-index: 3;
  right: var(--gutter);
  bottom: calc(var(--footer-h) + 16px);
  padding: 0.55em 1.15em;
  border: 1px solid rgba(59, 42, 33, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--cocoa-soft);
  font: 600 0.875rem/1 var(--font-ui);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.skip:hover {
  color: var(--cocoa);
  border-color: rgba(59, 42, 33, 0.45);
}

/* ---------- Stati dell'animazione ---------- */

html.js:not(.is-done) .skip { display: inline-block; }

html.js:not(.is-done) :is(.bg-bear, .corner-bear, .corner-logo, .info) { opacity: 0; }

html.js:not(.is-done) .ch:not(.on) { opacity: 0; }

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
  :root {
    --corner: clamp(84px, 28vw, 150px);
    --fs: clamp(1.25rem, 1rem + 1.4vw, 1.5rem);
  }

  .bg-bear {
    top: 12vh;
    width: min(130vw, 90vh);
  }

  .stage {
    grid-template-columns: 1fr 1fr;
    row-gap: 22px;
    align-content: start;
  }

  .corner-bear {
    grid-column: 1;
    width: var(--corner);
  }

  .corner-logo {
    grid-column: 2;
    width: calc(var(--corner) * 0.88);
  }

  .letter-open {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-top: 6px;
  }

  .letter-body { grid-row: 3; margin-top: 0.4em; }
  .signature { grid-row: 4; }

  /* Su schermi stretti il testo scorre come paragrafo */
  .line { display: inline; }

  .skip { bottom: calc(var(--footer-h) + 12px); }
}