body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #f8fafc;
  margin: 0;
  padding: 0;
}

.login-container {
  max-width: 400px;
  margin: auto;
  margin-top: 5vh;
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.logo-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  letter-spacing: 2px;
}
.logo-title span {
  color: #38bdf8; /* Celeste llamativo */
}

.flash-messages {
  margin-bottom: 1rem;
}
.flash {
  padding: 0.8rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
.flash.error { background: rgba(239, 68, 68, 0.3); color: #fecaca; }
.flash.success { background: rgba(34, 197, 94, 0.3); color: #bbf7d0; }

.login-form {
  display: flex;
  flex-direction: column;
}

.login-form label {
  margin-top: 0.8rem;
  font-weight: 500;
  font-size: 0.9rem;
}

.login-form input {
  padding: 0.7rem;
  margin-top: 0.3rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  outline: none;
}

.login-form input:focus {
  box-shadow: 0 0 0 2px #38bdf8;
}

.login-form button {
  margin-top: 1.5rem;
  padding: 0.8rem;
  background: #38bdf8;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  color: #0f172a;
  transition: background 0.3s ease;
}

.login-form button:hover {
  background: #0ea5e9;
}

.register-text {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
}
.register-text a {
  color: #38bdf8;
  text-decoration: none;
}
.register-text a:hover {
  text-decoration: underline;
}
.form-title {
  text-align: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #94a3b8;
}


/* Adaptación a móviles */
@media (max-width: 480px) {
  .login-container {
    margin: 2rem;
    padding: 1.5rem;
  }
  .logo-title {
    font-size: 2rem;
  }
}