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

:root {
  --color-primary: #5B2D8C;
  --color-primary-light: #7B4FAD;
  --color-secondary: #F5F0FA;
  --color-accent: #E91E63;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #ffffff;
  --color-gray-light: #F5F5F5;
  --color-gray: #E0E0E0;
  --color-border: #EEEEEE;
  --color-error: #D32F2F;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-secondary);
}

a {
  color: var(--color-primary);
}

.form-page {
  min-height: 100vh;
  padding: 48px 16px 64px;
  display: flex;
  justify-content: center;
}

.form-page__container {
  width: 100%;
  max-width: 560px;
  background-color: var(--color-white);
  border-radius: 12px;
  padding: 40px 32px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.form-page__logo {
  height: 28px;
  width: auto;
  margin-bottom: 16px;
}

.thanks-page__container .form-page__logo {
  margin-left: auto;
  margin-right: auto;
}

.form-page__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.form-page__lead {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.form__group {
  margin-bottom: 24px;
}

.form__honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__label {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.form__required {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 6px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-white);
  background-color: var(--color-accent);
  border-radius: 4px;
  vertical-align: middle;
}

.form__input {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-gray);
  border-radius: 6px;
  background-color: var(--color-white);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form__input.is-invalid {
  border-color: var(--color-error);
}

.form__textarea {
  resize: vertical;
}

.form__error {
  min-height: 1.2em;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--color-error);
}

.form__fieldset {
  border: none;
  margin-bottom: 24px;
}

.form__legend {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 12px;
  padding: 0;
}

.form__pref {
  margin-bottom: 12px;
}

.form__pref-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.form__pref-row {
  display: flex;
  gap: 8px;
}

.form__input--date {
  flex: 1 1 45%;
}

.form__input--time {
  flex: 1 1 55%;
}

.form__group--checkbox {
  display: flex;
  flex-direction: column;
}

.form__checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.form__checkbox {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.form__submit-error {
  min-height: 1.2em;
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--color-error);
  text-align: center;
}

.form__submit {
  display: block;
  width: 100%;
  padding: 16px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s ease, opacity 0.2s ease;
}

.form__submit:hover {
  background-color: var(--color-primary-light);
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

@media screen and (max-width: 480px) {
  .form-page {
    padding: 24px 12px 48px;
  }

  .form-page__container {
    padding: 28px 20px;
  }

  .form__pref-row {
    flex-direction: column;
  }
}