:root {
  --primary-blue: #3867A6;
  --text-gray: #A3A3A3;
  --border-color: #3867A6;
  --font-family: 'Inter', sans-serif;
  --bg-color: #f7f9fa;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color); /* Slight gray backdrop to make the white card pop */
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.form-container {
  background-color: #fff;
  width: 100%;
  max-width: 650px;
  padding: 40px 50px;
  border-radius: 4px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05); /* Sombra elegante sugerida por la imagen */
}

.form-title {
  color: var(--primary-blue);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 30px;
  letter-spacing: -0.5px;
}

#registroForm {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: flex;
  gap: 30px;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.form-row.full-width .form-group {
  flex: 1 1 100%;
}

input, textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--border-color);
  padding: 10px 0;
  font-family: var(--font-family);
  font-size: 14px;
  color: #333;
  background-color: transparent;
  outline: none;
  transition: border-bottom-color 0.3s;
}

input::placeholder, textarea::placeholder {
  color: var(--text-gray);
  font-weight: 400;
}

input:focus, textarea:focus {
  border-bottom: 2px solid var(--primary-blue);
  padding-bottom: 9px; /* Compensate for thicker border */
}

textarea {
  resize: vertical;
  min-height: 40px;
  line-height: 1.5;
}

.form-actions {
  margin-top: 25px;
}

button {
  width: 100%;
  background-color: var(--primary-blue);
  color: #fff;
  border: none;
  padding: 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 2px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #2F568C; /* Un azul ligeramente más oscuro */
}

button:disabled {
  background-color: var(--text-gray);
  cursor: not-allowed;
}

.hidden {
  display: none;
}

#statusMessage {
  margin-top: 15px;
  padding: 10px;
  border-radius: 4px;
  font-size: 14px;
  text-align: center;
}

#statusMessage.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

#statusMessage.error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* Responsividad para móviles */
@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
    gap: 20px;
  }
  .form-container {
    padding: 30px 20px;
  }
}

/* Spinner de Carga */
.loader {
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-left-color: #ffffff;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-left: 8px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}