/* TG Cartoline — stile della sezione (prefisso .tgpc) */

.tgpc{
  --tgpc-ink:   #140d04;
  --tgpc-paper: #fff4de;
  --tgpc-soft:  rgba(255, 244, 222, .82);
  --tgpc-accent:#f09920;
  --tgpc-serif: 'The Seasons', 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --tgpc-sans:  inherit;
  --tgpc-ease:  cubic-bezier(.16, 1, .3, 1);

  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6rem) 1.5rem;
  color: var(--tgpc-paper);
  font-family: var(--tgpc-sans);
  text-rendering: optimizeLegibility;
}
.tgpc *, .tgpc *::before, .tgpc *::after{ box-sizing: border-box; }
/* contenitore della cartolina aperta a tutto schermo (mobile) */
.tgpc.tgpc-host{ max-width: none; margin: 0; padding: 0; }

/* ---------- Intestazione ---------- */
.tgpc-header{ max-width: 700px; margin: 0 0 clamp(2.4rem, 5vw, 3.5rem); text-align: left; }
.tgpc-header::after{
  content: ""; display: block; width: 5rem; height: 1px; margin-top: 1.8rem;
  background: var(--tgpc-accent); transform-origin: left center;
}
.tgpc-eyebrow{
  display: flex; align-items: center; gap: .9rem; margin: 0 0 1.5rem;
  font: 600 .78rem/1.2 var(--tgpc-sans); letter-spacing: .28em; text-transform: uppercase;
  color: var(--tgpc-paper);
}
.tgpc-eyebrow::before{
  content: ""; display: block; width: 2.75rem; height: 1.5px;
  background: var(--tgpc-accent); transform-origin: left center;
}
.tgpc .tgpc-title{
  margin: 0 0 1rem; padding: 0;
  font-family: var(--tgpc-serif); font-size: clamp(2.1rem, 5vw, 3.5rem); font-weight: 400;
  line-height: 1.12; letter-spacing: 0; text-transform: none; color: var(--tgpc-paper);
}
.tgpc-subtitle{ margin: 0; max-width: 54ch; font: 400 .98rem/1.7 var(--tgpc-sans); color: var(--tgpc-soft); }

/* ---------- Cartoline ---------- */
.tgpc-cards{
  display: grid; grid-template-columns: repeat(var(--tgpc-cols, 3), minmax(0, 1fr));
  gap: clamp(1.4rem, 3vw, 2.4rem);
  max-width: calc(var(--tgpc-cols, 3) * 380px);
}
@media (min-width: 801px) and (max-width: 1100px){ .tgpc-cards.tgpc-cards--4{ --tgpc-cols: 2 !important; } }
.tgpc-card{
  position: relative; aspect-ratio: 3 / 4; cursor: pointer; perspective: 1600px;
  -webkit-tap-highlight-color: transparent;
}
.tgpc-card-inner{
  position: relative; width: 100%; height: 100%;
  transition: transform .9s cubic-bezier(.2,.7,.2,1);
  transform-style: preserve-3d; -webkit-transform-style: preserve-3d;
}
.tgpc-card.is-flipped .tgpc-card-inner{ transform: rotateY(180deg); }
.tgpc-card:focus-visible{ outline: 2px solid var(--tgpc-accent); outline-offset: 6px; border-radius: 6px; }

.tgpc-card-back,
.tgpc-card-front{
  position: absolute; inset: 0; border-radius: 4px;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  box-shadow: 0 16px 36px rgba(0,0,0,.4), 0 0 26px rgba(240, 153, 32, .08);
  display: flex; flex-direction: column;
  transform: translateZ(0); -webkit-transform: translateZ(0);
}

/* Retro */
.tgpc-card-back{
  background:
    radial-gradient(120% 90% at 18% 0%, rgba(240, 153, 32, .2) 0%, rgba(240, 153, 32, 0) 60%),
    linear-gradient(160deg, #4d3820 0%, #2e2113 100%);
  padding: 1.6rem 1.6rem 1.4rem;
  border: 1px solid rgba(240, 153, 32, .5);
  transition: border-color .5s ease, box-shadow .5s ease;
}
.tgpc-card-back::after{
  content: ""; position: absolute; inset: .7rem; border: 1px solid rgba(255, 244, 222, .26);
  border-radius: 2px; pointer-events: none; z-index: 0;
}
.tgpc-card-back-content{
  position: relative; z-index: 1; height: 100%;
  display: flex; flex-direction: column; justify-content: space-between;
}
.tgpc-stamp{
  align-self: flex-end; width: 46px; height: 56px;
  border: 1.5px dashed rgba(240, 153, 32, .95); border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  color: var(--tgpc-accent); background: rgba(240, 153, 32, .08); transform: rotate(6deg);
}
.tgpc-stamp svg{ width: 26px; height: 26px; }
.tgpc .tgpc-message{
  margin: .5rem 0; font-family: var(--tgpc-serif); font-size: 1.2rem; font-weight: 400;
  line-height: 1.5; color: var(--tgpc-paper);
}
.tgpc-message strong{
  display: block; margin-bottom: .7rem;
  font: 600 .7rem/1.3 var(--tgpc-sans); letter-spacing: .24em; text-transform: uppercase;
  color: var(--tgpc-accent);
}
.tgpc-hint{
  display: flex; align-items: center; gap: .5rem;
  font: 500 .68rem/1 var(--tgpc-sans); letter-spacing: .22em; text-transform: uppercase;
  color: var(--tgpc-accent);
}
.tgpc-hint svg{ width: 14px; height: 14px; transition: translate .35s var(--tgpc-ease); }

/* Timbro postale */
.tgpc-postmark{
  position: absolute; z-index: 3; top: 50%; left: 50%;
  width: 130px; height: 130px; margin: -65px 0 0 -65px;
  border: 3px double var(--tgpc-accent); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; text-align: center;
  color: var(--tgpc-accent); font-family: var(--tgpc-sans); font-weight: 600; font-size: .6rem;
  letter-spacing: .16em; text-transform: uppercase; line-height: 1.4;
  background: rgba(70, 48, 24, .45);
  opacity: 0; transform: scale(2.4) rotate(-18deg); pointer-events: none;
}
.tgpc-card.is-stamping .tgpc-postmark{ animation: tgpc-stamp-hit .5s ease-out forwards; }
@keyframes tgpc-stamp-hit{
  0%   { opacity: 0; transform: scale(2.4) rotate(-18deg); }
  55%  { opacity: .9; transform: scale(.94) rotate(-8deg); }
  75%  { opacity: .85; transform: scale(1.05) rotate(-10deg); }
  100% { opacity: 0; transform: scale(1) rotate(-8deg); }
}

/* Fronte */
.tgpc-card-front{
  transform: rotateY(180deg) translateZ(0); -webkit-transform: rotateY(180deg) translateZ(0);
  color: var(--tgpc-paper); justify-content: flex-end;
  border: 1px solid rgba(240, 153, 32, .5); overflow: hidden;
  background: linear-gradient(180deg, #6b4a2a 0%, #2e2113 100%);
}
.tgpc-card-front::after{
  content: ""; position: absolute; inset: .7rem; border: 1px solid rgba(255, 244, 222, .6);
  border-radius: 2px; pointer-events: none; z-index: 2;
}
.tgpc .tgpc-card-photo{
  position: absolute; inset: 0; width: 100%; height: 100%; max-width: none;
  object-fit: cover; border-radius: 4px; z-index: 0;
  filter: brightness(1.05) saturate(1.08);
}
.tgpc-badge{
  position: relative; z-index: 1; align-self: flex-start; margin: 1rem 0 .5rem 1.5rem;
  font: 600 .62rem/1 var(--tgpc-sans); letter-spacing: .2em; text-transform: uppercase;
  color: var(--tgpc-accent); background: rgba(30, 20, 9, .62);
  border: 1px solid rgba(240, 153, 32, .7); padding: .45rem .8rem; border-radius: 999px;
}
.tgpc-front-label{
  position: relative; z-index: 1; padding: 1.2rem 1.5rem 1.7rem;
  background: linear-gradient(180deg, rgba(30,20,9,0) 0%, rgba(30,20,9,.55) 45%, rgba(30,20,9,.85) 100%);
}
.tgpc .tgpc-place-name{
  margin: 0 0 .4rem; font-family: var(--tgpc-serif); font-size: 1.7rem; font-weight: 400;
  line-height: 1.15; color: var(--tgpc-paper);
}
.tgpc .tgpc-place-tag{ margin: 0; font: 400 .84rem/1.55 var(--tgpc-sans); color: var(--tgpc-soft); }

/* ---------- Pulsanti ---------- */
.tgpc-footer{
  margin-top: clamp(2.4rem, 5vw, 3.4rem);
  display: flex; align-items: center; justify-content: center; gap: 1.25rem; flex-wrap: wrap;
}
.tgpc .tgpc-reset{
  font: 500 .78rem/1 var(--tgpc-sans); letter-spacing: .16em; text-transform: uppercase;
  background: transparent; border: 1px solid rgba(255, 244, 222, .45); color: var(--tgpc-paper);
  min-height: 48px; padding: .9rem 1.6rem; border-radius: 999px; cursor: pointer;
  transition: background .25s ease, color .25s ease, border-color .25s ease;
}
.tgpc .tgpc-reset:hover{ background: var(--tgpc-paper); border-color: var(--tgpc-paper); color: var(--tgpc-ink); }
.tgpc .tgpc-reset:focus-visible,
.tgpc .tgpc-cta:focus-visible{ outline: 2px solid var(--tgpc-accent); outline-offset: 3px; }

.tgpc .tgpc-cta{
  display: none;
  font: 500 .95rem/1 var(--tgpc-sans); letter-spacing: .04em;
  color: var(--tgpc-ink); background: var(--tgpc-accent); border: 1.5px solid var(--tgpc-accent);
  min-height: 48px; padding: .95rem 2.1rem; border-radius: 999px; text-decoration: none;
  transition: transform .25s ease, background .25s ease, border-color .25s ease;
}
.tgpc .tgpc-cta.is-visible{ display: inline-block; }
.tgpc .tgpc-cta:hover{
  transform: translateY(-2px); background: var(--tgpc-paper); border-color: var(--tgpc-paper); color: var(--tgpc-ink);
}

.tgpc-overlay-close{
  position: absolute; top: -.6rem; right: -.6rem; z-index: 4;
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: var(--tgpc-paper); color: var(--tgpc-ink);
  font-size: 1.4rem; line-height: 1; display: flex; align-items: center; justify-content: center; cursor: pointer;
}

@media (hover: hover){
  .tgpc-card:not(.is-flipped):hover .tgpc-card-back{
    border-color: var(--tgpc-accent);
    box-shadow: 0 16px 36px rgba(0,0,0,.4), 0 0 38px rgba(240, 153, 32, .3);
  }
  .tgpc-card:not(.is-flipped):hover .tgpc-hint svg{ translate: 4px 0; }
}

/* ---------- Mobile ---------- */
@media (max-width: 800px){
  .tgpc-cards{
    display: flex; flex-wrap: nowrap; gap: 1rem; overflow-x: auto; overflow-y: visible;
    scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch;
    max-width: none; margin: 0 -1.5rem; padding: .5rem 1.5rem 2.5rem;
  }
  .tgpc-card{ flex: 0 0 210px; scroll-snap-align: center; }
  .tgpc-card-back{ padding: 1.1rem 1rem .95rem; }
  .tgpc-card-back::after, .tgpc-card-front::after{ inset: .5rem; }
  .tgpc-stamp{ width: 34px; height: 42px; }
  .tgpc-stamp svg{ width: 20px; height: 20px; }
  .tgpc .tgpc-message{ font-size: .92rem; line-height: 1.4; margin: .4rem 0; }
  .tgpc-message strong{ font-size: .6rem; margin-bottom: .5rem; }
  .tgpc-hint{ font-size: .58rem; gap: .35rem; }
  .tgpc-hint svg{ width: 12px; height: 12px; }
  .tgpc-postmark{ width: 92px; height: 92px; margin: -46px 0 0 -46px; font-size: .48rem; }
  .tgpc-badge{ font-size: .54rem; margin: .8rem 0 .4rem 1rem; padding: .4rem .65rem; }
  .tgpc-front-label{ padding: .9rem 1rem 1.1rem; }
  .tgpc .tgpc-place-name{ font-size: 1.2rem; }
  .tgpc .tgpc-place-tag{ font-size: .74rem; }

  .tgpc-card.is-flipped.tgpc-card-overlay{
    position: fixed; inset: 0; z-index: 999999; flex: none;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.1rem;
    width: 100vw; height: 100dvh; margin: 0; padding: 1.5rem;
    background: rgba(3, 3, 3, .88); animation: tgpc-overlay-in .25s ease-out;
    aspect-ratio: auto;
  }
  .tgpc-card.is-flipped.tgpc-card-overlay .tgpc-cta{ position: relative; flex: none; }
  .tgpc-card-overlay .tgpc-overlay-close{ top: max(1rem, env(safe-area-inset-top)); right: 1rem; }
  .tgpc-card.is-flipped.tgpc-card-overlay .tgpc-card-inner{
    width: min(78vw, 300px); height: auto; aspect-ratio: 3 / 4;
    max-height: 62dvh; max-width: calc(62dvh * 3 / 4);
  }
  .tgpc-card.is-flipped.tgpc-card-overlay .tgpc-place-name{ font-size: 1.5rem; }
  .tgpc-card.is-flipped.tgpc-card-overlay .tgpc-place-tag{ font-size: .84rem; }
  @keyframes tgpc-overlay-in{ from{ opacity: 0; } to{ opacity: 1; } }
}

/* ---------- Animazioni d'ingresso (browser recenti) ---------- */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .tgpc-eyebrow, .tgpc .tgpc-title, .tgpc-subtitle{
      animation: tgpcUp linear both; animation-timeline: view(); animation-range: entry 0% entry 100%;
    }
    .tgpc-eyebrow::before, .tgpc-header::after{
      animation: tgpcDraw linear both; animation-timeline: view(); animation-range: entry 10% cover 30%;
    }
  }
}
@keyframes tgpcUp   { from { opacity: 0; translate: 0 16px; } to { opacity: 1; translate: 0 0; } }
@keyframes tgpcDraw { from { transform: scaleX(0); } to { transform: scaleX(1); } }

@media (prefers-reduced-motion: reduce){
  .tgpc-card-inner{ transition: none; }
  .tgpc-card.is-stamping .tgpc-postmark, .tgpc-card.is-flipped.tgpc-card-overlay{ animation: none; }
  .tgpc .tgpc-cta:hover{ transform: none; }
}