:root {
  --primary-color: #77bbbb;
  --light-color: #dfffff;
  --text-color: #2f2f2f;
  --link-color: #00bfff;
  --bg-color: #b6ffff;

  --neon-blue: #cc75ff;
  --neon-green: #c075fd;
  /*--neon-green: #00ffbf;*/
  --neon-pink: #ff4de6;
  --text-color: #f0f0f0;
  --bg-gradient: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
}

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

body { 
  background: var(--bg-gradient);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--text-color);
  padding: 1em;
  margin: 0;
  padding: 0;
}

/* Contenedor principal */
.login-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}
/*logo-main*/
.logo-link {
  position: absolute;
  top: 1.2em;
  left: 1.2em;
  display: inline-block;
  text-decoration: none;

  color: #41f3f3;
  text-shadow: 0 0 10px var(--neon-green);
}

.logo-img {
  width: 60px;
  max-height: 100px;
  border-radius: 11px;
  transition: transform 0.3s ease;
}

.logo-img:hover {
  transform: scale(1.05);
}


/* Caja de login */
.login-box {
  background-color: #0002;
  padding: 2em;
  border: 1.5px solid var(--neon-blue);
  border-radius: 12px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 0 15px var(--neon-blue),0 0 40px #0ef1;
  text-align: center;
  animation: fadeIn 0.8s ease;
  transition: transform 0.3s ease;
}

.login-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 30px var(--neon-green);
}


/* Título */
.login-title {
  margin-bottom: 1.5em;
  font-size: 1.8rem;
  color: var(--neon-green);
  text-shadow: 0 0 10px var(--neon-green);
  user-select: none;
}


/* Inputs */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1em;
}

.form-input {
  padding: 0.8em;
  background-color: transparent;
  border: 1.5px solid var(--neon-blue);
  color: var(--text-color);
  border-radius: 8px;
  font-size: 1rem;
  width: 100%;
}

.form-input:focus {
  outline: none;
  border-color: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green);
  background-color: transparent;
}


/* message error */
  .msg-error {
    color: var(--neon-pink);
    display: block;
    margin: 0;
    margin-bottom: 0.5em;
    font-size: 0.85rem;
  }

/* Botón */
.form-button {
  padding: 0.8em;
  background-color: var(--neon-blue);
  color: #000;
  border: none;
  border-radius: 11px;
  font-size: 1rem;
  font-weight: 550;
  cursor: pointer;
  box-shadow: 0 0 12px var(--neon-blue);
  transition: background-color 0.3s, box-shadow 0.3s;
  user-select: none;
}

.form-button:hover {
  background-color: var(--neon-green);
  box-shadow: 0 0 18px var(--neon-green);
}

/* Enlace inferior */
.register-link {
  margin-top: 1.5em;
  font-size: 0.95rem;
}

.register-link a {
  color: var(--neon-blue);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.register-link a:hover {
  text-decoration: underline;
  color: var(--neon-green);
}

/* Footer */
footer {
  background-color: #003;
  color: #aaf;
  padding: 1em;
  text-align: center;
  font-weight: bold;
  width: 100%;
}

.invitado {
  display: block;
  margin-top: 19px;
  color: var(--neon-blue);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
  cursor: pointer;
}
.invitado:hover {
  color: var(--neon-green);
  font-size: 17px;
}


/* Responsive */
@media (max-width: 690px) {
  .login-container {
    padding: 1.5em 2em;
    margin: 2cm;
  }
  .login-box {
    padding: 1.5em 1em;
  }

  .login-title {
    font-size: 1.5rem;
  }
}