/* ==========================================================================
   Sections — セクション固有スタイル
   ========================================================================== */

/* --------------------------------------------------------------------------
   #mv（ファーストビュー）— 要件定義書「5-2」
   -------------------------------------------------------------------------- */
.section-mv {
  position: relative;
  padding: 16rem 0 12rem;
  overflow: hidden;
  min-height: 100vh;
}

.mv__content {
  position: relative;
  z-index: 2;
  max-width: 60rem;
}

.mv__main-copy {
  font-size: 4.8rem;
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-half);
  letter-spacing: var(--tracking-base);
  margin-bottom: 2.4rem;
}

.mv__sub-copy {
  font-size: 1.5rem;
  color: var(--color-muted);
  line-height: var(--leading-wide);
  margin-bottom: 4rem;
}

.mv__cta-group {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
}

/* イラスト配置コンテナ */
.mv-illust-pc,
.mv-illust-sp {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.mv-illust-sp {
  display: none;
}

/* PC イラスト配置（15体） */
.mv-illust-pc .c-illust:nth-child(1)  { left: 55%; top: 5%;  width: 15%; }
.mv-illust-pc .c-illust:nth-child(2)  { left: 72%; top: 12%; width: 12%; }
.mv-illust-pc .c-illust:nth-child(3)  { left: 88%; top: 3%;  width: 10%; }
.mv-illust-pc .c-illust:nth-child(4)  { left: 60%; top: 30%; width: 11%; }
.mv-illust-pc .c-illust:nth-child(5)  { left: 78%; top: 35%; width: 14%; }
.mv-illust-pc .c-illust:nth-child(6)  { left: 50%; top: 55%; width: 9%; }
.mv-illust-pc .c-illust:nth-child(7)  { left: 65%; top: 58%; width: 13%; }
.mv-illust-pc .c-illust:nth-child(8)  { left: 85%; top: 50%; width: 10%; }
.mv-illust-pc .c-illust:nth-child(9)  { left: 92%; top: 25%; width: 8%; }
.mv-illust-pc .c-illust:nth-child(10) { left: 55%; top: 75%; width: 12%; }
.mv-illust-pc .c-illust:nth-child(11) { left: 70%; top: 72%; width: 10%; }
.mv-illust-pc .c-illust:nth-child(12) { left: 82%; top: 70%; width: 11%; }
.mv-illust-pc .c-illust:nth-child(13) { left: 45%; top: 40%; width: 8%; }
.mv-illust-pc .c-illust:nth-child(14) { left: 93%; top: 60%; width: 7%; }
.mv-illust-pc .c-illust:nth-child(15) { left: 48%; top: 85%; width: 10%; }

.mv-illust-pc .c-illust,
.mv-illust-sp .c-illust {
  position: absolute;
  animation: illust-float 4s ease-in-out infinite;
}

/* FV内ではbefore/after切替を無効化し、beforeだけ表示 */
.mv-illust-pc .c-illust.is-multiple img:last-child,
.mv-illust-sp .c-illust.is-multiple img:last-child {
  visibility: hidden !important;
}

/* ふわふわ浮遊アニメーション */
@keyframes illust-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

/* 各イラストの揺れタイミングをずらす */
.mv-illust-pc .c-illust:nth-child(1),
.mv-illust-sp .c-illust:nth-child(1)  { animation-duration: 3.8s; animation-delay: 0s; }
.mv-illust-pc .c-illust:nth-child(2),
.mv-illust-sp .c-illust:nth-child(2)  { animation-duration: 4.4s; animation-delay: 0.6s; }
.mv-illust-pc .c-illust:nth-child(3),
.mv-illust-sp .c-illust:nth-child(3)  { animation-duration: 3.6s; animation-delay: 1.2s; }
.mv-illust-pc .c-illust:nth-child(4),
.mv-illust-sp .c-illust:nth-child(4)  { animation-duration: 4.8s; animation-delay: 0.3s; }
.mv-illust-pc .c-illust:nth-child(5),
.mv-illust-sp .c-illust:nth-child(5)  { animation-duration: 4.0s; animation-delay: 0.9s; }
.mv-illust-pc .c-illust:nth-child(6),
.mv-illust-sp .c-illust:nth-child(6)  { animation-duration: 4.6s; animation-delay: 1.5s; }
.mv-illust-pc .c-illust:nth-child(7),
.mv-illust-sp .c-illust:nth-child(7)  { animation-duration: 3.4s; animation-delay: 0.4s; }
.mv-illust-pc .c-illust:nth-child(8),
.mv-illust-sp .c-illust:nth-child(8)  { animation-duration: 5.0s; animation-delay: 1.0s; }
.mv-illust-pc .c-illust:nth-child(9),
.mv-illust-sp .c-illust:nth-child(9)  { animation-duration: 3.8s; animation-delay: 1.8s; }
.mv-illust-pc .c-illust:nth-child(10),
.mv-illust-sp .c-illust:nth-child(10) { animation-duration: 4.2s; animation-delay: 0.7s; }
.mv-illust-pc .c-illust:nth-child(11) { animation-duration: 4.6s; animation-delay: 1.3s; }
.mv-illust-pc .c-illust:nth-child(12) { animation-duration: 3.6s; animation-delay: 0.2s; }
.mv-illust-pc .c-illust:nth-child(13) { animation-duration: 5.2s; animation-delay: 1.6s; }
.mv-illust-pc .c-illust:nth-child(14) { animation-duration: 4.0s; animation-delay: 0.5s; }
.mv-illust-pc .c-illust:nth-child(15) { animation-duration: 4.4s; animation-delay: 1.1s; }

/* アクセシビリティ：モーション軽減設定 */
@media (prefers-reduced-motion: reduce) {
  .mv-illust-pc .c-illust,
  .mv-illust-sp .c-illust {
    animation: none;
  }
}

/* --------------------------------------------------------------------------
   #service（事業概要）— 要件定義書「5-3」
   -------------------------------------------------------------------------- */
.section-service {
  position: relative;
  padding: 10rem 0 12rem;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
}

.service-item-link {
  display: block;
  position: relative;
  background: var(--color-white);
  height: 30rem;
  padding: 3.6rem 26rem 3.8rem 3.8rem;
  overflow: clip;
  transition: border-color 0.3s ease;
}

.service-item__heading {
  font-size: 2.4rem;
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-half);
  letter-spacing: var(--tracking-base);
  margin-bottom: 1.6rem;
}

.service-item__desc {
  color: var(--color-muted);
  font-size: 1.3rem;
  line-height: var(--leading-loose);
}

.service-item__desc ul {
  margin-top: 0.8rem;
}

.service-item__desc li {
  position: relative;
  padding-left: 1.2rem;
}

.service-item__desc li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-muted);
}

/* アイコンバッジ */
.service-item__icon {
  position: absolute;
  bottom: 3.8rem;
  left: 3.8rem;
}

/* イラスト */
.service-item__illust {
  position: absolute;
  right: -2rem;
  bottom: -2rem;
  width: 24rem;
  height: auto;
}

/* --------------------------------------------------------------------------
   #strength（私たちの強み）— 要件定義書「5-4」
   -------------------------------------------------------------------------- */
.section-strength {
  position: relative;
  padding: 10rem 0;
  background: var(--color-bg);
}

.strength-list {
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

.strength-item {
  display: grid;
  grid-template-columns: 1fr 0.6fr;
  gap: 4rem;
  align-items: center;
}

.strength-item__keyword {
  font-family: var(--font-family-red-hat);
  font-weight: var(--font-weight-extra-bold);
  font-size: 1.2rem;
  color: var(--index-color, var(--color-01));
  margin-bottom: 1.2rem;
  letter-spacing: var(--tracking-wide);
}

.strength-item__heading {
  font-size: 2.8rem;
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-half);
  letter-spacing: var(--tracking-base);
  margin-bottom: 1.6rem;
}

.strength-item__text {
  font-size: 1.5rem;
  line-height: var(--leading-wide);
  color: var(--color-muted);
}

.strength-item__image {
  border-radius: 2rem;
  overflow: hidden;
}

.strength-item__image img {
  width: 100%;
  max-width: 36rem;
  height: auto;
  display: block;
  margin-left: auto;
}

/* --------------------------------------------------------------------------
   #company（会社概要）— 要件定義書「5-5」
   -------------------------------------------------------------------------- */
.section-company {
  position: relative;
  padding: 10rem 0;
}

.company-table {
  max-width: 80rem;
}

.company-table__row {
  display: flex;
  padding: 1.6rem 0;
  background-image: linear-gradient(
    to right,
    var(--color-border) 0 0.4rem,
    transparent 0.4rem 0.6rem
  );
  background-size: 0.6rem var(--border-width);
  background-repeat: repeat-x;
  background-position: bottom;
}

.company-table__label {
  width: 30%;
  font-weight: var(--font-weight-bold);
  font-size: 1.5rem;
  letter-spacing: var(--tracking-base);
  flex-shrink: 0;
}

.company-table__value {
  width: 70%;
  color: var(--color-muted);
  font-size: 1.5rem;
  line-height: var(--leading-base);
}

/* --------------------------------------------------------------------------
   #message（代表挨拶）— 要件定義書「5-6」
   -------------------------------------------------------------------------- */
.section-message {
  position: relative;
  padding: 10rem 0;
  background: var(--color-ash);
}

.message__grid {
  max-width: 80rem;
}

.message__image {
  margin-bottom: 3.2rem;
  border-radius: 1.2rem;
  overflow: hidden;
}

.message__image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.message__heading {
  font-size: 2.8rem;
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-half);
  letter-spacing: var(--tracking-base);
  margin-bottom: 3.2rem;
}

.message__text {
  font-size: 1.5rem;
  line-height: var(--leading-wide);
  letter-spacing: var(--tracking-base);
}

.message__text p {
  margin-bottom: 2rem;
}

.message__text p:last-child {
  margin-bottom: 0;
}

.message__illust {
  display: flex;
  justify-content: center;
}

.message__illust .c-illust {
  width: 80%;
  max-width: 40rem;
}

/* --------------------------------------------------------------------------
   #contact（CTA + フォーム）— 要件定義書「5-7」「8章」
   -------------------------------------------------------------------------- */
.section-contact {
  position: relative;
  padding: 10rem 0;
}

.contact__cta-area {
  text-align: center;
  margin-bottom: 6rem;
}

.contact__heading {
  font-size: 2.8rem;
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-half);
  letter-spacing: var(--tracking-base);
  margin-bottom: 1.6rem;
}

.contact__text {
  font-size: 1.5rem;
  color: var(--color-muted);
  line-height: var(--leading-wide);
  margin-bottom: 3.2rem;
}

.contact__cta-group {
  display: flex;
  gap: 1.6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 6rem;
}

/* フォーム */
.contact-form-wrapper {
  background: var(--color-white);
  border-radius: var(--border-radius);
  padding: 4.8rem;
  max-width: 80rem;
  margin: 0 auto;
}

.contact-form__title {
  font-size: 2.4rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-base);
  margin-bottom: 3.2rem;
  text-align: center;
}

.form-group {
  margin-bottom: 2.4rem;
}

.form-group__label {
  display: block;
  font-size: 1.4rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-base);
  margin-bottom: 0.8rem;
}

.form-group__label .required {
  color: var(--color-01);
  font-size: 1.2rem;
  margin-left: 0.4rem;
}

.form-group__input,
.form-group__textarea {
  width: 100%;
  background: var(--color-snow);
  border: var(--border-width) solid var(--color-border);
  border-radius: 0.8rem;
  padding: 1.2rem 1.6rem;
  font-size: 1.5rem;
  line-height: var(--leading-base);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group__input:focus,
.form-group__textarea:focus {
  outline: none;
  border-color: var(--color-01);
  box-shadow: 0 0 0 0.3rem rgba(217, 79, 59, 0.15);
}

.form-group__textarea {
  min-height: 16rem;
  resize: vertical;
}

/* エラー状態 */
.form-group__input.is-error,
.form-group__textarea.is-error {
  border-color: var(--color-01);
}

.form-group__error {
  color: var(--color-01);
  font-size: 1.2rem;
  margin-top: 0.4rem;
  display: none;
}

.form-group__error.is-visible {
  display: block;
}

/* ラジオボタン */
.form-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.form-radio-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.8rem 1.2rem;
  border-radius: var(--border-radius-full);
  border: var(--border-width) solid var(--color-border);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.form-radio-label:hover {
  border-color: var(--color-01);
}

.form-radio-label input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1.6rem;
  height: 1.6rem;
  border: var(--border-width) solid var(--color-border);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.form-radio-label input[type="radio"]:checked {
  border-color: var(--color-01);
}

.form-radio-label input[type="radio"]:checked::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--color-01);
}

/* チェックボックス */
.form-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.4rem;
  cursor: pointer;
}

.form-checkbox-label input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1.8rem;
  height: 1.8rem;
  border: var(--border-width) solid var(--color-border);
  border-radius: 0.4rem;
  position: relative;
  flex-shrink: 0;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.form-checkbox-label input[type="checkbox"]:checked {
  background: var(--color-01);
  border-color: var(--color-01);
}

.form-checkbox-label input[type="checkbox"]:checked::before {
  content: '';
  position: absolute;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  width: 0.5rem;
  height: 0.9rem;
  border: solid var(--color-white);
  border-width: 0 0.2rem 0.2rem 0;
}

.form-checkbox-label a {
  color: var(--color-01);
  text-decoration: underline;
}

/* 送信ボタン */
.form-submit-wrapper {
  margin-top: 3.2rem;
}

.c-button--submit {
  position: relative;
}

.c-button--submit.is-loading {
  pointer-events: none;
  opacity: 0.7;
}

.c-button--submit .spinner {
  display: none;
  width: 2rem;
  height: 2rem;
  border: 0.2rem solid var(--color-white);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.c-button--submit.is-loading .spinner {
  display: block;
}

.c-button--submit.is-loading .c-button__text {
  visibility: hidden;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* サンクスメッセージ */
.form-thanks {
  text-align: center;
  padding: 4rem 0;
  display: none;
}

.form-thanks.is-visible {
  display: block;
}

.form-thanks__heading {
  font-size: 2.4rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 1.6rem;
}

.form-thanks__text {
  font-size: 1.5rem;
  color: var(--color-muted);
  line-height: var(--leading-wide);
}