:root{
  --bg:#050b18;
  --card:rgba(255,255,255,0.08);
  --accent1:#00c6ff;
  --accent2:#0072ff;
  --muted:#9aa4ae;
  --danger:#ff4f70;
  --text:#eaf2f8;
}

*{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

html,body{
  height:100%;
  font-family:'Poppins',sans-serif;
  background:radial-gradient(circle at 20% 20%,#071021,#00040d);
  color:var(--text);
  overflow:hidden;
}

/* ===== Splash ===== */
#splash{
  position:fixed;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  background:radial-gradient(900px 600px at 30% 30%,#061324 0%,#000814 80%);
  z-index:9999;
  transition:opacity 1s ease;
}

#splash.hide{
  opacity:0;
  pointer-events:none;
}

.stars{
  position:absolute;
  inset:0;
  background:
    radial-gradient(2px 2px at 20% 30%,#fff9 99%,transparent 100%),
    radial-gradient(1.5px 1.5px at 50% 80%,#fff8 99%,transparent 100%),
    radial-gradient(1.8px 1.8px at 80% 40%,#fff8 99%,transparent 100%);
  opacity:.6;
  animation:parallax 6s ease-in-out infinite alternate;
}

@keyframes parallax{
  from{ transform:translateY(-4px); }
  to{ transform:translateY(4px); }
}

/* Logo animado con efecto de color */
.logo-img{
  width:300px;
  max-width:80%;
  animation:float 3s ease-in-out infinite, glow 2s ease-in-out infinite;
  filter:drop-shadow(0 0 20px rgba(0,183,255,0.6));
  position:relative;
}

/* Halo de colores animado */
.logo-img::after{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  border-radius:50%;
  background:conic-gradient(from 0deg, #00c6ff, #ff00f7, #00ff99, #00c6ff);
  filter:blur(35px);
  opacity:0.6;
  z-index:-1;
  animation:rotateGlow 6s linear infinite;
}

@keyframes rotateGlow{
  from{ transform:rotate(0deg); }
  to{ transform:rotate(360deg); }
}

@keyframes float{
  0%,100%{ transform:translateY(0); }
  50%{ transform:translateY(-8px); }
}

@keyframes glow{
  0%,100%{
    filter:
      drop-shadow(0 0 20px rgba(0,183,255,0.6))
      drop-shadow(0 0 40px rgba(0,255,153,0.3));
  }
  50%{
    filter:
      drop-shadow(0 0 30px rgba(255,0,255,0.7))
      drop-shadow(0 0 60px rgba(0,255,255,0.5));
  }
}

#splash h2{
  margin-top:15px;
  color:var(--muted);
  font-weight:400;
  letter-spacing:1px;
  text-align:center;
}

/* ===== Login ===== */
.container{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
}

.card{
  width:100%;
  max-width:420px;
  background:var(--card);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:16px;
  padding:36px 30px;
  backdrop-filter:blur(18px);
  box-shadow:0 0 40px rgba(0,0,0,0.6),0 0 10px rgba(0,200,255,0.2);
}

.card h1{
  text-align:center;
  font-size:22px;
  margin-bottom:6px;
}

.card p{
  text-align:center;
  color:var(--muted);
  font-size:13px;
  margin-bottom:20px;
}

label{
  font-size:13px;
  color:var(--muted);
}

input{
  width:100%;
  padding:12px 14px;
  margin-top:6px;
  margin-bottom:16px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:8px;
  color:var(--text);
  outline:none;
  transition:0.3s;
}

input:focus{
  border-color:var(--accent1);
  box-shadow:0 0 10px rgba(0,183,255,0.3);
}

button{
  width:100%;
  padding:12px;
  border:none;
  border-radius:8px;
  background:linear-gradient(90deg,var(--accent1),var(--accent2));
  color:white;
  font-weight:700;
  cursor:pointer;
  font-size:15px;
  transition:transform .2s,box-shadow .3s;
}

button:hover{
  transform:scale(1.03);
  box-shadow:0 0 20px rgba(0,183,255,0.4);
}

.error{
  color:var(--danger);
  text-align:center;
  font-size:13px;
  display:none;
  margin-top:10px;
}

.footer{
  margin-top:18px;
  text-align:center;
  color:var(--muted);
  font-size:12px;
}

.footer span{
  color:var(--accent1);
}