:root {
  --neon-blue: #00eaff;
  --neon-green: #00ffbf;
  --neon-pink: #ff4de6;
  --neon-bg: linear-gradient(135deg, #1a1a2e, #0f3460, #16213e);
  --text-color: #f0f0f0;
  --input-bg: #00000022;
  --input-border: #00eaff;
  --button-color: #00eaff;
  --button-hover: #00ffbf;
  --footer-bg: rgba(0, 44, 44, 0.7);
  --footer-text: #aaf;
}

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

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

main {
  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;
  box-shadow: 0 0 10px #0ef2;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.logo-img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 19px #0ef2;
}

/* Cajas de login y registro */
.login-box, .register-box {
  background: #0001;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1.8px solid var(--neon-blue);
  padding: 2.5em 2em;
  border-radius: 16px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 0 25px #0ef4;
  text-align: center;
  animation: fadeIn 0.7s ease;
  transition: transform 0.3s ease;
}
.login-box:hover,
.register-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 30px rgba(0, 255, 191, 0.5);
}

.login-title,
.register-title {
  font-size: 2rem;
  margin-bottom: 1.5em;
  color: var(--neon-green);
  text-shadow: 0 0 10px var(--neon-green);
  user-select: none;
}

.login-form,
.register-form {
  display: flex;
  flex-direction: column;
  gap: 1.2em;
}

.form-input {
  padding: 0.9em;
  border: 1.5px solid var(--input-border);
  border-radius: 11px;
  font-size: 1rem;
  background-color: var(--input-bg);
  color: var(--text-color);
  transition: border 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
  border-color: var(--button-hover);
  box-shadow: 0 0 8px var(--button-hover);
  outline: none;
  background-color: rgba(255, 255, 255, 0.08);
}

.form-button {
  padding: 0.9em;
  background-color: var(--button-color);
  color: #000;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  font-weight: bold;
  box-shadow: 0 0 10px var(--button-color);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.form-button:hover {
  background-color: var(--button-hover);
  box-shadow: 0 0 15px var(--button-hover);
}

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

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

.register-link a:hover {
  color: var(--neon-green);
  text-shadow: 0 0 5px var(--neon-green);
}

/* message error */
  .msg-error {
    color: var(--neon-pink);
    font-size: 0.9rem;00;
    display: block;
    margin: 0;
  }


/* Footer */
footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding: 1em;
  text-align: center;
  font-weight: bold;
  width: 100%;
  margin-top: 2em;
}

/* Animaciones */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .login-title,
  .register-title {
    font-size: 1.6rem;
  }
}