:root{
  --bg:#0b1724;
  --ink:#e8f1f7;
  --ink-dim:#b8d0df;
  --primary:#4aaec0;
  --primary-2:#2a6f86;
  --accent:#f0d7c2;
  --card:#0f2232f2;
  --stroke:#1f3a50;
  --ring: 0 0 0 4px color-mix(in srgb, var(--primary) 26%, transparent);
  --radius:16px;
  --shadow: 0 10px 35px rgba(0,0,0,.35), 0 2px 10px rgba(0,0,0,.25);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:'Poppins',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:
    radial-gradient(1000px 600px at 20% -10%, #16314c 0%, transparent 60%),
    radial-gradient(900px 600px at 110% 10%, #0c2a3f 0%, transparent 60%),
    var(--bg);
  color:var(--ink);
  overflow-x:hidden;
  overflow-y:hidden;             /* ⛔ sin scroll vertical */
}

/* Fondo */
.bg-orbit{position:fixed; inset:0; z-index:-2; pointer-events:none}
.orb{
  position:absolute; width:320px; height:320px; border-radius:50%;
  filter: blur(70px);
  opacity:.35;
  animation: float 12s ease-in-out infinite;
}
.orb-1{top:-80px; left:-80px; background:#2f7a8f;}
.orb-2{bottom:-120px; right:-90px; background:#3ac1cf; animation-delay:-2s;}
.orb-3{top:40%; left:65%; width:220px; height:220px; background:#1e8ba5; animation-delay:-4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}

.grid-glow{
  position:absolute; inset:0;
  background-image:
    linear-gradient(transparent 95%, rgba(74,174,192,.08) 95%),
    linear-gradient(90deg, transparent 95%, rgba(74,174,192,.08) 95%);
  background-size: 40px 40px;
  mask-image: radial-gradient(600px 400px at 50% 50%, #000 0%, transparent 80%);
}

/* Layout principal sin overflow */
.shell{
  min-height:100svh;             /* alto real en móviles */
  height:100dvh;                 /* alternativo para navegadores */
  display:grid;
  place-items:center;
  padding:clamp(12px, 4vw, 28px);
  overflow:hidden;               /* evita desborde interno */
}
.card{
  width:min(480px, 92vw);
  background: color-mix(in srgb, var(--card), transparent 12%);
  backdrop-filter: blur(12px) saturate(120%);
  border:1px solid color-mix(in srgb, var(--stroke), transparent 20%);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:clamp(18px, 4vw, 28px);
  margin:0;
  max-height:calc(100svh - 2 * clamp(12px, 4vw, 28px));
  overflow:hidden;               /* nada se sale y genera scroll */
}

/* Brand */
.brand{text-align:center; margin-bottom:14px}
.logo-wrap{display:inline-grid; place-items:center}
.logo{
  width:150px; height:auto; display:block;
  filter:drop-shadow(0 6px 30px rgba(42,111,134,.45));
}
.brand h1{font-size:clamp(20px, 2.4vw, 26px); margin:.4rem 0 .2rem 0; font-weight:600}
.muted{color:var(--ink-dim); margin:0; font-size:.95rem}

/* Formulario */
.form{margin-top:6px}
.field{margin:12px 0 10px}
.label{display:block; font-weight:500; margin-bottom:6px; color:var(--ink-dim)}

.input{
  display:flex; align-items:center; gap:10px;
  background:#0f2232aa;
  border:1px solid color-mix(in srgb, var(--stroke), transparent 28%);
  border-radius:14px;
  padding:10px 12px;
  outline:none; transition:.2s border, .2s box-shadow, .2s transform;
}
.input:focus-within{
  border-color:color-mix(in srgb, var(--primary) 40%, var(--stroke));
  box-shadow:var(--ring);
  transform:translateY(-1px);
}
.input i{font-size:1.2rem; color:var(--ink-dim)}
.input input{
  flex:1; background:transparent; border:0; outline:0; color:var(--ink);
  font-size:1rem; padding:6px 4px;
}
.input input::placeholder{color:color-mix(in srgb, var(--ink-dim), transparent 20%)}

.ghost{
  border:0; background:transparent; color:var(--ink-dim); cursor:pointer;
  display:grid; place-items:center; padding:6px;
}
.ghost:hover{color:var(--ink)}

.error{display:block; margin-top:6px; min-height:1.1rem; color:#ffb3b3; font-size:.85rem}

.actions{margin-top:8px}
.btn{
  --h:46px;
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  height:var(--h); width:100%;
  border-radius:14px;
  background:linear-gradient(180deg, color-mix(in srgb, var(--primary) 70%, #fff 0%), var(--primary-2));
  color:#fff; border:1px solid color-mix(in srgb, var(--primary-2), transparent 10%);
  font-weight:600; letter-spacing:.2px; cursor:pointer;
  transition:transform .12s ease, box-shadow .2s ease, filter .2s ease;
  box-shadow:0 20px 40px rgba(42,111,134,.35);
}
.btn:hover{transform:translateY(-1px); filter:brightness(1.06)}
.btn i{font-size:1.15rem}

.foot-note{text-align:center; color:var(--ink-dim); margin-top:10px; font-size:.9rem}
.foot-note a{color:var(--ink-dim); text-decoration:underline dotted}

/* Compactaciones para móvil */
@media (max-width:480px){
  .logo{width:120px}
  .card{padding:16px}
  .label{font-size:.95rem}
  .input{padding:10px 12px}
  .btn{--h:44px}
  .foot-note{margin-top:8px; font-size:.84rem}
}

/* Si el alto es reducido, aún sin scroll */
@media (max-height:640px){
  .card{box-shadow:0 8px 24px rgba(0,0,0,.28)}
  .brand{margin-bottom:8px}
  .form{margin-top:2px}
}