/* =====================================================================
   TELLUS — pantalla de ingreso
   ===================================================================== */
:root{
  --oro:#f0b429; --cian:#38bdf8; --ok:#10b981; --err:#f43f5e;
  --txt:#f8fafc; --mut:#94a3b8; --mut2:#64748b;
  --panel:rgba(9,14,26,.72); --borde:rgba(56,189,248,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:#03050c; color:var(--txt); overflow:hidden;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}

/* ------------------------------------------------ fondo */
#fondo{position:fixed;inset:0;z-index:0;overflow:hidden}
#estrellas,#tierra{position:absolute;inset:0;width:100%;height:100%;display:block}
#tierra{opacity:0;transition:opacity 2.4s ease}
#tierra.visible{opacity:1}
#atmosfera{
  position:absolute;left:50%;top:52%;transform:translate(-50%,-50%);
  width:min(150vmin,1500px);height:min(150vmin,1500px);pointer-events:none;
  background:radial-gradient(circle,
    rgba(56,189,248,.13) 0%, rgba(56,189,248,.07) 34%,
    rgba(14,116,144,.05) 52%, rgba(0,0,0,0) 70%);
}

/* ------------------------------------------------ contenido */
#contenido{
  position:relative;z-index:3;height:100%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:18px;padding:22px 16px;text-align:center;
}

/* anillo con el logo y la clave dentro */
#anillo{
  position:relative;width:min(520px,92vw);padding:44px 34px 34px;
  border-radius:50% / 46%;
  background:radial-gradient(ellipse at 50% 42%, rgba(8,16,32,.50) 0%, rgba(4,9,20,.70) 56%, rgba(2,4,10,.90) 100%);
  border:1px solid var(--borde);
  box-shadow:0 0 0 1px rgba(56,189,248,.08) inset,
             0 0 70px rgba(56,189,248,.13),
             0 30px 90px rgba(0,0,0,.75);
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);
  animation:flotar 7s ease-in-out infinite;
}
#anillo-borde{
  position:absolute;inset:-13px;border-radius:50% / 46%;
  border:1px solid rgba(56,189,248,.30);
  box-shadow:0 0 34px rgba(56,189,248,.20), 0 0 90px rgba(56,189,248,.08) inset;
  animation:latir 4.2s ease-in-out infinite;pointer-events:none;
}
@keyframes flotar{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}
@keyframes latir{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:1;transform:scale(1.022)}}

#marca h1{
  font-size:clamp(2.1rem,6.4vw,3.1rem);letter-spacing:.34em;
  font-weight:200;color:#fff;margin-left:.34em;
  text-shadow:0 0 10px rgba(0,0,0,.85), 0 0 34px rgba(56,189,248,.75), 0 0 80px rgba(56,189,248,.35);
}
#marca .sub{
  font-size:.70rem;letter-spacing:.28em;color:#7dd3fc;
  margin-top:7px;text-transform:uppercase;
  text-shadow:0 0 8px rgba(0,0,0,.9), 0 0 18px rgba(56,189,248,.5);
}
#marca .sub2{font-size:.64rem;color:#94a3b8;margin-top:5px;letter-spacing:.07em;
  text-shadow:0 0 8px rgba(0,0,0,.9)}

/* formulario dentro del anillo */
#forma{margin-top:26px;display:flex;flex-direction:column;gap:10px;max-width:330px;
  margin-left:auto;margin-right:auto;width:100%}
#forma .etq{font-size:.72rem;color:var(--mut);letter-spacing:.13em;text-transform:uppercase}
#ver-clave{align-self:center;margin:2px 0 6px}
#clave{
  width:100%;padding:14px 16px;text-align:center;font-size:1.06rem;letter-spacing:.20em;
  background:rgba(2,6,14,.9);color:#fff;border:1px solid var(--borde);border-radius:10px;
  outline:none;transition:.2s;font-weight:600;
}
#clave::placeholder{color:#334155;letter-spacing:.22em}
#clave:focus{border-color:var(--cian);box-shadow:0 0 0 3px rgba(56,189,248,.16)}
#clave.mal{border-color:var(--err);box-shadow:0 0 0 3px rgba(244,63,94,.2);animation:sacudir .45s}
@keyframes sacudir{0%,100%{transform:translateX(0)}20%{transform:translateX(-9px)}
  40%{transform:translateX(8px)}60%{transform:translateX(-5px)}80%{transform:translateX(4px)}}

#enviar{
  padding:14px;border:none;border-radius:10px;cursor:pointer;
  font-size:.86rem;font-weight:800;letter-spacing:.19em;color:#04121f;
  background:linear-gradient(135deg,var(--cian),#7dd3fc);
  box-shadow:0 10px 30px rgba(56,189,248,.30);transition:.18s;
}
#enviar:hover{filter:brightness(1.1);transform:translateY(-1px)}
#enviar:disabled{opacity:.55;cursor:wait;transform:none}
.mensaje{min-height:19px;font-size:.76rem;color:var(--err);line-height:1.5}
.mensaje.ok{color:var(--ok)}

/* ------------------------------------------------ controles */
#controles{
  display:flex;gap:14px;flex-wrap:wrap;justify-content:center;align-items:center;
  background:var(--panel);border:1px solid rgba(148,163,184,.16);border-radius:12px;
  padding:9px 15px;max-width:min(720px,95vw);backdrop-filter:blur(7px);
}
#controles label{font-size:.68rem;color:var(--mut);display:flex;flex-direction:column;gap:3px;
  letter-spacing:.1em;text-transform:uppercase}
#controles label.chk{flex-direction:row;align-items:center;gap:6px;text-transform:none;
  letter-spacing:0;font-size:.72rem;cursor:pointer}
#controles select{
  background:#111a2e;color:#e2e8f0;border:1px solid #24334d;border-radius:7px;
  padding:5px 7px;font-size:.74rem;max-width:210px;cursor:pointer;
}
#controles input[type=checkbox]{accent-color:var(--cian);cursor:pointer}

#aviso{font-size:.70rem;color:#d9c48a;background:rgba(240,180,41,.07);
  border:1px solid rgba(240,180,41,.26);border-radius:8px;padding:7px 13px;max-width:640px}
#legal{font-size:.62rem;color:var(--mut2);letter-spacing:.04em}

/* ------------------------------------------------ portadas */
#portada,#bienvenida{
  position:fixed;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at 50% 45%, rgba(4,8,18,.40), rgba(1,2,6,.84));
  backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);padding:20px;
}
#bienvenida{display:none}
#portada .caja,#bienvenida .caja{
  text-align:center;max-width:520px;padding:38px 30px;border-radius:18px;
  border:1px solid var(--borde);background:rgba(6,10,20,.82);
  box-shadow:0 0 80px rgba(56,189,248,.16),0 30px 90px rgba(0,0,0,.8);
  animation:aparecer .7s ease both;
}
@keyframes aparecer{from{opacity:0;transform:translateY(18px) scale(.97)}to{opacity:1;transform:none}}
.escudo{font-size:2.4rem;color:var(--oro);text-shadow:0 0 26px rgba(240,180,41,.55);margin-bottom:10px}
#portada h2,#bienvenida h2{
  font-size:clamp(1.7rem,5vw,2.4rem);letter-spacing:.28em;font-weight:200;color:#fff;
  text-shadow:0 0 24px rgba(56,189,248,.5);margin-left:.28em;
}
.cargo{font-size:.76rem;color:var(--cian);letter-spacing:.17em;text-transform:uppercase;margin-top:9px}
.texto{font-size:.86rem;color:var(--mut);line-height:1.72;margin:18px 0 22px}
#portada button,#bienvenida button{
  padding:15px 34px;border:none;border-radius:11px;cursor:pointer;
  font-size:.94rem;font-weight:800;letter-spacing:.2em;color:#04121f;
  background:linear-gradient(135deg,var(--oro),#fcd34d);
  box-shadow:0 12px 36px rgba(240,180,41,.30);transition:.18s;
}
#portada button:hover,#bienvenida button:hover{filter:brightness(1.09);transform:translateY(-2px)}
.pie{font-size:.66rem;color:var(--mut2);margin-top:18px;letter-spacing:.09em}

/* ------------------------------------------------ cargando */
#cargando{position:fixed;inset:0;z-index:40;display:none;flex-direction:column;
  align-items:center;justify-content:center;gap:18px;background:rgba(2,4,10,.96)}
#cargando.ver{display:flex}
#cargando p{font-size:.8rem;color:var(--cian);letter-spacing:.18em}
.aro{width:56px;height:56px;border:2px solid rgba(56,189,248,.2);border-top-color:var(--cian);
  border-radius:50%;animation:girar 1s linear infinite}
@keyframes girar{to{transform:rotate(360deg)}}

@media(max-width:620px){
  #anillo{padding:32px 20px 26px}
  #marca .sub2{display:none}
  #controles{gap:9px;padding:8px 11px}
  #controles select{max-width:150px}
  #contenido{gap:13px}
}
@media(max-height:620px){
  #marca .sub2,#aviso{display:none}
  #anillo{padding:26px 18px 20px}
}