/* Base styles */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --error-color: #dc2626;
  --success-color: #16a34a;
  --text-color: #1e293b;
  --border-color: #e2e8f0;
  --border-radius: 0.375rem;
  --transition: all 0.2s ease-in-out;
}

.form-container {
  width: 100%;
  max-width: 28rem;
  padding: 2rem;
  margin: auto;
  background: white;
  border-radius: var(--border-radius);
  box-shadow:
    0 4px 6px -1px rgb(0 0 0 / 10%),
    0 2px 4px -2px rgb(0 0 0 / 10%);
}

/* Form elements */
.form-group {
  width: 100%;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-color);
  text-align: left;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

input[type='tel'] {
  width: 100%;
  padding: 0.75rem 2.5rem 0.75rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-color);
  appearance: textfield;
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

/* Remove number input spinners */
input[type='tel']::-webkit-outer-spin-button,
input[type='tel']::-webkit-inner-spin-button {
  margin: 0;
  appearance: none;
}

.input-suffix {
  position: absolute;
  right: 1rem;
  pointer-events: none;
  opacity: 0.7;
  transition: var(--transition);
}

input[type='tel']:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 10%);
}

input[type='tel']:focus + .input-suffix {
  opacity: 1;
  transform: scale(1.1);
}

/* Validation states */
input[type='tel'][aria-invalid='true'] {
  padding-right: 2.5rem;
  border-color: var(--error-color);
}

input[type='tel'][aria-invalid='true'] + .input-suffix {
  color: var(--error-color);
}

input[type='tel'].valid {
  border-color: var(--success-color);
}

input[type='tel'].valid + .input-suffix {
  color: var(--success-color);
}

/* Helper text and error messages */
.hint,
.error-message {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  line-height: 1.4;
  text-align: left;
}

.hint {
  color: #64748b;
}

.error-message {
  min-height: 1.25rem;
  color: var(--error-color);
}

/* Animations */
@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-5px);
  }

  75% {
    transform: translateX(5px);
  }
}

.shake {
  animation: shake 0.3s ease-in-out;
}

/* Responsive adjustments */
@media (width <= 480px) {
  .form-container {
    padding: 1.5rem;
  }

  input[type='tel'] {
    font-size: 1rem;
  }
}