*,
::before,
::after {
  box-sizing: border-box;
  border-width: 0;
  border-style: solid;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
  overflow: hidden;
}

#form {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 650px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
}

#form-title,
.input-div:has(#phone),
#form-btn {
  grid-column: span 2;
}

#form-title {
  text-align: center;
  font-size: 1.6rem;
  color: #333;
  margin-bottom: 5px;
}

.input-div {
  display: flex;
  flex-direction: column;
}

label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #555;
  margin-bottom: 4px;
  text-transform: uppercase;
}

input,
select {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
}

input:focus,
select:focus {
  border-color: #667eea;
  box-shadow: 0 0 5px rgba(102, 126, 234, 0.2);
}

.input-div:has(#phone) {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}

.input-div:has(#phone) label {
  width: 100%;
}

.input-div:has(#phone) .informacion {
  width: 100%;
  order: 3;
}

#phone-code {
  background: #f3f3f3;
  padding: 10px;
  border: 1px solid #ddd;
  border-right: none;
  border-radius: 6px 0 0 6px;
  font-size: 0.9rem;
  font-weight: bold;
  color: #667eea;
  min-width: 55px;
  text-align: center;
}

#phone {
  flex: 1;
  border-radius: 0 6px 6px 0;
}

.informacion {
  font-size: 0.7rem;
  color: #777;
  margin-top: 4px;
  line-height: 1.2;
  display: none;
}

.correct{
    outline: 2px solid #22c55e;
}

.incorrect{
    outline: 2px solid #ef4444;
}
.show-information{
    display: block;
}




#form-btn {
  padding: 12px;
  background: #764ba2;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
  margin-top: 5px;
}

#form-btn:hover:not(:disabled) {
  background: #5a377d;
}

#form-btn:disabled {
  background: #ccc;
  cursor: not-allowed;
}

@media (max-width: 600px) {
  #form {
    grid-template-columns: 1fr;
    max-height: 95vh;
    overflow-y: auto;
  }

  #form-title,
  .input-div,
  #form-btn,
  .input-div:has(#phone) {
    grid-column: span 1;
  }
}