:root{
  --bg:#04060f;
  --panel: rgba(11,14,28,0.68);
  --panel-2: rgba(20,24,46,0.75);
  --txt:#ecf1ff;
  --muted:#b9c4e8;
  --pink:#ff66b8;
  --pink-2:#ff9dd6;
  --violet:#9c7dff;
  --line: rgba(255,255,255,0.12);
}

*{ box-sizing:border-box; }
html,body{
  margin:0; padding:0; width:100%; height:100%;
  background:var(--bg);
  color:var(--txt);
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  overflow:hidden;
}

/* --------- Gate / Carta --------- */
.gate{
  position:fixed; inset:0;
  background: radial-gradient(1200px 700px at 50% 50%, #130f2a 0%, #060914 60%, #02030a 100%);
  z-index:2000;
  display:grid; place-items:center;
  overflow:hidden;
}
.gate-canvas{
  position:absolute; inset:0;
  width:100%; height:100%;
}
.envelope-wrap{
  position:relative;
  z-index:3;
  width:min(90vw,540px);
  display:grid;
  justify-items:center;
  gap:14px;
  text-align:center;
  padding:18px;
}
.gate-text h1{
  margin:0;
  font-size:clamp(1.6rem,3.2vw,2.2rem);
  font-weight:800;
  letter-spacing:.2px;
}
.gate-text p{
  margin:.3rem 0 0;
  color:var(--muted);
  font-size:clamp(.95rem,2vw,1.05rem);
}
.envelope{
  position:relative;
  width:min(70vw,340px);
  aspect-ratio: 16 / 10;
  transform-origin:center;
  transition: transform .9s ease, opacity .9s ease;
}
.envelope-back{
  position:absolute; inset:0;
  border-radius:14px;
  background: linear-gradient(170deg,#1a1532 0%, #302357 60%, #20163d 100%);
  border:1px solid rgba(255,255,255,0.18);
  box-shadow:0 20px 40px rgba(0,0,0,.35), 0 0 60px rgba(255,110,190,.18);
}
.envelope-paper{
  position:absolute; left:6%; right:6%; top:10%; bottom:18%;
  border-radius:10px;
  background: linear-gradient(180deg,#fbeaff 0%, #f8d9ef 100%);
  opacity:.92;
}
.envelope-flap{
  position:absolute; left:0; right:0; top:0;
  height:58%;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  background: linear-gradient(180deg,#3a2a69 0%, #271d4b 100%);
  border:1px solid rgba(255,255,255,.15);
  transform-origin:50% 0%;
  transition: transform 1s cubic-bezier(.2,.8,.2,1);
}
.open-btn{
  border:none;
  padding:12px 22px;
  border-radius:999px;
  background: linear-gradient(90deg, var(--pink), var(--violet));
  color:white;
  font-weight:800;
  letter-spacing:.2px;
  cursor:pointer;
  box-shadow:0 10px 30px rgba(255,102,184,.35);
  transition: transform .2s ease, filter .2s ease, box-shadow .2s ease;
}
.open-btn:hover{ transform:translateY(-1px) scale(1.02); filter:brightness(1.07); }
.open-btn:active{ transform:translateY(1px) scale(.99); }

.gate.opening .envelope{
  transform: translateY(-18px) scale(1.02);
}
.gate.opening .envelope-flap{
  transform: rotateX(185deg);
}
.gate.opening .open-btn{
  opacity:.15; pointer-events:none;
}
.gate.fade-out{
  animation:gateFade .95s ease forwards;
}
@keyframes gateFade{
  to{ opacity:0; visibility:hidden; }
}

/* --------- App --------- */
.hidden{ display:none !important; }

.app{
  position:fixed; inset:0;
  background:#03050c;
}
.topbar{
  position:absolute;
  top:0; left:0; right:0;
  height:78px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:10px 14px;
  backdrop-filter: blur(8px);
  background: linear-gradient(180deg, rgba(3,5,12,.93), rgba(3,5,12,.62));
  border-bottom:1px solid var(--line);
  z-index:100;
}
.brand{
  font-weight:800;
  letter-spacing:.4px;
  color:#ffd9ee;
  padding:8px 12px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:12px;
  background:rgba(255,255,255,.03);
}
.menu{
  display:flex; gap:8px; flex-wrap:wrap;
}
.nav-btn{
  border:1px solid rgba(255,255,255,.2);
  background:rgba(20,24,46,.55);
  color:#ecf1ff;
  border-radius:999px;
  padding:9px 13px;
  font-weight:700;
  cursor:pointer;
  transition:all .2s ease;
}
.nav-btn:hover{ transform:translateY(-1px); background:rgba(35,42,72,.78); }
.nav-btn.active{
  background: linear-gradient(90deg, rgba(255,102,184,.2), rgba(156,125,255,.25));
  border-color: rgba(255,157,214,.65);
  box-shadow:0 0 0 1px rgba(255,157,214,.28) inset;
}

.views{
  position:absolute;
  left:0; right:0; bottom:0; top:78px;
}
.view{
  position:absolute; inset:0;
  display:none;
}
.view.active{ display:block; }

.scene-canvas{
  position:absolute; inset:0;
  width:100%; height:100%;
  display:block;
}
.home-canvas{
  pointer-events:none; /* para que no bloquee el menú ni tarjeta */
}

.home-card{
  position:absolute;
  left:50%;
  top:54%;
  transform:translate(-50%,-50%);
  width:min(92vw,760px);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.16);
  border-radius:20px;
  padding:22px 22px;
  box-shadow:0 25px 60px rgba(0,0,0,.35), 0 0 80px rgba(255,102,184,.10);
  backdrop-filter: blur(6px);
  z-index:2;
  text-align:center;
}
.home-card h2{
  margin:0 0 10px;
  font-size:clamp(1.25rem,3vw,1.9rem);
}
.home-card p{
  margin:0;
  color:#d6dff8;
  line-height:1.6;
  font-size:clamp(.98rem,1.9vw,1.07rem);
}

.scene-hint{
  position:absolute;
  left:14px;
  bottom:12px;
  z-index:3;
  padding:8px 12px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.15);
  background: rgba(8,10,20,.58);
  color:#d4ddff;
  font-size:.9rem;
  backdrop-filter: blur(4px);
}

/* --------- Zodiaco --------- */
.zodiac-wrap{
  position:absolute; inset:0;
  overflow:hidden;
  background:#05070f;
}
#stellariumFrame{
  position:absolute; inset:0;
  width:100%; height:100%;
  border:0;
  background:#000;
}
.zodiac-left-mask{
  position:absolute;
  top:0; left:0; bottom:0;
  width:58px;
  background: linear-gradient(90deg, rgba(4,6,12,.95) 0%, rgba(4,6,12,.82) 70%, rgba(4,6,12,0) 100%);
  pointer-events:none;
  z-index:5;
}
.zodiac-helper{
  position:absolute;
  right:14px;
  top:14px;
  width:min(320px, 88vw);
  z-index:8;
  padding:14px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(10,14,27,.78);
  backdrop-filter: blur(6px);
}
.zodiac-helper h3{
  margin:0 0 8px;
}
.zodiac-helper p{
  margin:0 0 8px;
  color:#d5def8;
}
.zodiac-helper ol{
  margin:0 0 10px 18px;
  padding:0;
  color:#b7c6f5;
}
.zodiac-link{
  color:#ffd2ea;
  text-decoration:none;
  font-weight:700;
}
.zodiac-link:hover{ text-decoration:underline; }

.zodiac-fallback{
  position:absolute;
  left:50%;
  bottom:14px;
  transform:translateX(-50%);
  z-index:9;
  border:1px solid rgba(255,255,255,.2);
  background:rgba(10,14,27,.8);
  padding:10px 14px;
  border-radius:12px;
  color:#e9eeff;
}
.zodiac-fallback a{ color:#ffc4e5; }

/* --------- Responsive --------- */
@media (max-width:760px){
  .topbar{
    height:auto;
    min-height:78px;
    padding:10px;
    align-items:flex-start;
    flex-direction:column;
  }
  .views{ top:106px; }
  .menu{ width:100%; }
  .nav-btn{ flex:1 1 calc(50% - 8px); }
  .home-card{ top:58%; padding:18px; border-radius:16px; }
}