:root {
  --primary-color: #4F46E5;
  --primary-hover: #4338CA;
  --background-color: #F5F5F5;
  --form-background: #FFFFFF;
  --text-color: #1F2937;
  --placeholder-color: #9CA3AF;
  --border-color: #E5E7EB;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --error-color: #EF4444;
  --success-color: #10B981;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: 480px;
  padding: 0 1rem;
}

.form {
  background-color: var(--form-background);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px var(--shadow-color);
  position: relative;
}

.back-button {
  position: absolute;
  top: 2rem;
  left: 2rem;
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 0.875rem;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.back-button:hover {
  transform: translateX(-4px);
}

h1 {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--text-color);
}

.form-group {
  margin-bottom: 1.25rem;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-color);
  background-color: var(--form-background);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

input::placeholder,
textarea::placeholder {
  color: var(--placeholder-color);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239CA3AF'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.submit-button {
  width: 100%;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.submit-button:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.submit-button:active {
  transform: translateY(0);
}

.form-group.success input {
  border-color: var(--success-color);
}

.form-group.error input {
  border-color: var(--error-color);
}

.error-message {
  color: var(--error-color);
  font-size: 0.75rem;
  margin-top: 0.25rem;
  display: none;
}

.form-group.error .error-message {
  display: block;
}

@media (max-width: 480px) {
  .container {
    padding: 1rem;
  }
  
  .form {
    padding: 1.5rem;
  }
  
  .back-button {
    top: 1.5rem;
    left: 1.5rem;
  }
}