/*
 * With Token — AI関連サービスページ 専用CSS
 *
 * デザインシステム変数（style.css / theme.json 定義済み）を使用。
 * モバイルファースト。Noto Sans JP のみ使用。
 *
 * 担当: 西村彩花（WordPressデベロッパー）
 * 作成日: 2026-05-02
 */

/* ============================================================
   CSS変数（style.css 未定義分を補完）
   ============================================================ */

:root {
    --ai-color-yellow:   #F5C842;
    --ai-color-yellow-h: #E0B030;
    --ai-color-green:    #7EC8A4;
    --ai-color-cream:    #FDF8F0;
    --ai-color-dark:     #3D2B1F;
    --ai-color-mid:      #8B6F5E;
    --ai-color-light:    #C8BFB5;
    --ai-color-white:    #FFFFFF;
    --ai-color-sold:     #B0A89E;
    --ai-color-badge:    #F5C842;

    --ai-radius-sm:  8px;
    --ai-radius-md:  16px;
    --ai-radius-lg:  24px;
    --ai-shadow-card: 0 4px 24px rgba(61, 43, 31, 0.08);

    --ai-section-gap-mobile: 64px;
    --ai-section-gap-desk:   96px;
    --ai-max-width:          1120px;
    --ai-content-width:      720px;
}

/* ============================================================
   ベースレイアウト
   ============================================================ */

.wt-ai-page {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--ai-color-dark);
    background-color: var(--ai-color-cream);
    -webkit-font-smoothing: antialiased;
}

.wt-ai-container {
    max-width: var(--ai-max-width);
    margin-inline: auto;
    padding-inline: 20px;
}

.wt-ai-section {
    padding-block: var(--ai-section-gap-mobile);
}

.wt-ai-section-title {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--ai-color-dark);
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.4;
}

/* ============================================================
   ① Hero セクション
   ============================================================ */

.wt-ai-hero {
    background: linear-gradient(135deg, var(--ai-color-cream) 0%, #FFF5D6 60%, #FDEFD0 100%);
    padding-block: 72px 64px;
    text-align: center;
}

.wt-ai-hero__eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--ai-color-mid);
    background-color: rgba(245, 200, 66, 0.18);
    border-radius: var(--ai-radius-sm);
    padding: 4px 12px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.wt-ai-hero__headline {
    font-size: clamp(1.7rem, 5vw, 2.75rem);
    font-weight: 900;
    color: var(--ai-color-dark);
    line-height: 1.35;
    margin-bottom: 20px;
    max-width: 700px;
    margin-inline: auto;
}

.wt-ai-hero__sub {
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    color: var(--ai-color-mid);
    line-height: 1.8;
    max-width: 580px;
    margin-inline: auto;
    margin-bottom: 36px;
}

.wt-ai-hero__cta {
    display: inline-block;
    background-color: var(--ai-color-yellow);
    color: var(--ai-color-dark);
    font-weight: 700;
    font-size: 1rem;
    padding: 16px 40px;
    border-radius: 100px;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.15s ease;
    box-shadow: 0 4px 16px rgba(245, 200, 66, 0.4);
}

.wt-ai-hero__cta:hover {
    background-color: var(--ai-color-yellow-h);
    transform: translateY(-2px);
    color: var(--ai-color-dark);
    text-decoration: none;
}

/* ============================================================
   ② 実績セクション
   ============================================================ */

.wt-ai-achievements {
    background-color: var(--ai-color-white);
}

.wt-ai-achievements__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.wt-ai-achievement-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background-color: var(--ai-color-cream);
    border-radius: var(--ai-radius-md);
    padding: 16px;
    box-shadow: var(--ai-shadow-card);
    transition: transform 0.15s ease;
}

.wt-ai-achievement-card:hover {
    transform: translateY(-2px);
}

.wt-ai-achievement-card__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    line-height: 1;
}

.wt-ai-achievement-card__text {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--ai-color-dark);
}

/* ============================================================
   ③ サービス内容セクション
   ============================================================ */

.wt-ai-service-intro {
    background-color: var(--ai-color-cream);
}

.wt-ai-service-intro__lead {
    text-align: center;
    font-size: 1rem;
    color: var(--ai-color-mid);
    margin-bottom: 40px;
    line-height: 1.8;
}

.wt-ai-features {
    display: grid;
    gap: 20px;
}

.wt-ai-feature-card {
    background-color: var(--ai-color-white);
    border-radius: var(--ai-radius-md);
    padding: 24px;
    box-shadow: var(--ai-shadow-card);
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.wt-ai-feature-card__icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.wt-ai-feature-card__title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--ai-color-dark);
}

.wt-ai-feature-card__desc {
    font-size: 0.875rem;
    color: var(--ai-color-mid);
    line-height: 1.7;
    margin: 0;
}

/* ============================================================
   ④ お客様の声セクション
   ============================================================ */

.wt-ai-reviews {
    background-color: var(--ai-color-white);
}

.wt-ai-reviews__grid {
    display: grid;
    gap: 20px;
}

.wt-ai-review-card {
    border-radius: var(--ai-radius-md);
    overflow: hidden;
    box-shadow: var(--ai-shadow-card);
}

.wt-ai-review-card__img {
    width: 100%;
    height: auto;
    display: block;
}

.wt-ai-review-card__quote {
    padding: 16px 20px;
    font-size: 0.9rem;
    color: var(--ai-color-mid);
    font-style: italic;
    line-height: 1.7;
    border-top: 3px solid var(--ai-color-yellow);
    background-color: var(--ai-color-cream);
    margin: 0;
}

/* ============================================================
   ⑤ 料金プランセクション
   ============================================================ */

.wt-ai-pricing {
    background-color: var(--ai-color-cream);
}

.wt-ai-pricing__grid {
    display: grid;
    gap: 16px;
    margin-bottom: 40px;
}

.wt-ai-plan-card {
    background-color: var(--ai-color-white);
    border-radius: var(--ai-radius-md);
    padding: 24px;
    box-shadow: var(--ai-shadow-card);
    position: relative;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
}

.wt-ai-plan-card--recommended {
    border-color: var(--ai-color-yellow);
}

.wt-ai-plan-card--sold-out {
    opacity: 0.55;
    filter: grayscale(0.4);
}

.wt-ai-plan-card--coming-soon {
    opacity: 0.65;
}

.wt-ai-plan-card__badge {
    display: inline-block;
    background-color: var(--ai-color-badge);
    color: var(--ai-color-dark);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
    position: absolute;
    top: -12px;
    left: 20px;
}

.wt-ai-plan-card__badge--sold {
    background-color: var(--ai-color-sold);
    color: var(--ai-color-white);
}

.wt-ai-plan-card__badge--coming {
    background-color: var(--ai-color-light);
    color: var(--ai-color-dark);
}

.wt-ai-plan-card__name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--ai-color-dark);
}

.wt-ai-plan-card__price {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--ai-color-dark);
    margin-bottom: 4px;
}

.wt-ai-plan-card__price span {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--ai-color-mid);
}

.wt-ai-plan-card__status {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ai-color-mid);
    margin-top: 8px;
}

.wt-ai-plan-card--recommended .wt-ai-plan-card__status {
    color: #2E9A5A;
}

/* 質問サービスパック */
.wt-ai-option-box {
    background-color: var(--ai-color-white);
    border-radius: var(--ai-radius-md);
    padding: 28px;
    box-shadow: var(--ai-shadow-card);
    margin-top: 8px;
}

.wt-ai-option-box__title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--ai-color-dark);
}

.wt-ai-option-grid {
    display: grid;
    gap: 12px;
}

.wt-ai-option-item {
    background-color: var(--ai-color-cream);
    border-radius: var(--ai-radius-sm);
    padding: 16px;
}

.wt-ai-option-item__name {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.wt-ai-option-item__price {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--ai-color-dark);
    margin-bottom: 4px;
}

.wt-ai-option-item__desc {
    font-size: 0.8rem;
    color: var(--ai-color-mid);
    margin: 0;
}

/* ============================================================
   ⑥ FAQ セクション
   ============================================================ */

.wt-ai-faq {
    background-color: var(--ai-color-white);
}

.wt-ai-faq__list {
    max-width: var(--ai-content-width);
    margin-inline: auto;
}

.wt-ai-faq-item {
    border-bottom: 1px solid rgba(61, 43, 31, 0.1);
}

.wt-ai-faq-item:first-child {
    border-top: 1px solid rgba(61, 43, 31, 0.1);
}

.wt-ai-faq-item__question {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    padding: 20px 0;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ai-color-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    line-height: 1.5;
}

.wt-ai-faq-item__question:hover {
    color: var(--ai-color-mid);
}

.wt-ai-faq-item__q-label {
    color: var(--ai-color-yellow);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.wt-ai-faq-item__q-text {
    flex: 1;
}

.wt-ai-faq-item__chevron {
    flex-shrink: 0;
    transition: transform 0.25s ease;
    color: var(--ai-color-mid);
}

.wt-ai-faq-item--open .wt-ai-faq-item__chevron {
    transform: rotate(180deg);
}

.wt-ai-faq-item__answer {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease, padding 0.25s ease;
    padding-bottom: 0;
}

.wt-ai-faq-item--open .wt-ai-faq-item__answer {
    max-height: 400px;
    padding-bottom: 20px;
}

.wt-ai-faq-item__a-text {
    font-size: 0.9rem;
    color: var(--ai-color-mid);
    line-height: 1.8;
    padding-left: 28px;
    margin: 0;
}

/* ============================================================
   ⑦ お問い合わせフォームセクション
   ============================================================ */

.wt-ai-form-section {
    background-color: var(--ai-color-cream);
}

.wt-ai-form-section__lead {
    text-align: center;
    font-size: 0.95rem;
    color: var(--ai-color-mid);
    margin-bottom: 36px;
    line-height: 1.8;
}

.wt-ai-form-wrap {
    background-color: var(--ai-color-white);
    border-radius: var(--ai-radius-lg);
    padding: 32px 24px;
    box-shadow: var(--ai-shadow-card);
    max-width: var(--ai-content-width);
    margin-inline: auto;
}

.wt-ai-form-field {
    margin-bottom: 24px;
}

.wt-ai-form-field:last-child {
    margin-bottom: 0;
}

.wt-ai-form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--ai-color-dark);
    margin-bottom: 8px;
}

.wt-ai-form-label__required {
    display: inline-block;
    background-color: var(--ai-color-yellow);
    color: var(--ai-color-dark);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 6px;
    vertical-align: middle;
}

.wt-ai-form-label__optional {
    display: inline-block;
    background-color: var(--ai-color-light);
    color: var(--ai-color-dark);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 6px;
    vertical-align: middle;
}

.wt-ai-form-input,
.wt-ai-form-textarea {
    width: 100%;
    border: 1.5px solid var(--ai-color-light);
    border-radius: var(--ai-radius-sm);
    padding: 12px 16px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.95rem;
    color: var(--ai-color-dark);
    background-color: var(--ai-color-cream);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
}

.wt-ai-form-input:focus,
.wt-ai-form-textarea:focus {
    outline: none;
    border-color: var(--ai-color-yellow);
    box-shadow: 0 0 0 3px rgba(245, 200, 66, 0.2);
    background-color: var(--ai-color-white);
}

.wt-ai-form-input.is-error,
.wt-ai-form-textarea.is-error {
    border-color: #E05A4E;
    box-shadow: 0 0 0 3px rgba(224, 90, 78, 0.1);
}

.wt-ai-form-textarea {
    resize: vertical;
    min-height: 140px;
}

/* ラジオボタン */
.wt-ai-form-radio-group {
    display: grid;
    gap: 8px;
}

.wt-ai-form-radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--ai-color-dark);
    cursor: pointer;
    padding: 12px 16px;
    border: 1.5px solid var(--ai-color-light);
    border-radius: var(--ai-radius-sm);
    background-color: var(--ai-color-cream);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.wt-ai-form-radio-label:hover {
    border-color: var(--ai-color-yellow);
    background-color: rgba(245, 200, 66, 0.06);
}

.wt-ai-form-radio-label input[type="radio"] {
    accent-color: var(--ai-color-yellow);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.wt-ai-form-radio-label:has(input:checked) {
    border-color: var(--ai-color-yellow);
    background-color: rgba(245, 200, 66, 0.1);
    font-weight: 600;
}

/* プライバシーチェックボックス */
.wt-ai-form-privacy-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--ai-color-mid);
    cursor: pointer;
    line-height: 1.6;
}

.wt-ai-form-privacy-label input[type="checkbox"] {
    accent-color: var(--ai-color-yellow);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.wt-ai-form-privacy-label a {
    color: var(--ai-color-dark);
    text-decoration: underline;
}

/* エラーメッセージ */
.wt-ai-form-error {
    color: #E05A4E;
    font-size: 0.8rem;
    margin-top: 6px;
    display: none;
}

.wt-ai-form-error.is-visible {
    display: block;
}

/* 送信ボタン */
.wt-ai-submit-btn {
    display: block;
    width: 100%;
    background-color: var(--ai-color-yellow);
    color: var(--ai-color-dark);
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    padding: 18px 32px;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.15s ease, opacity 0.2s ease;
    margin-top: 32px;
    box-shadow: 0 4px 16px rgba(245, 200, 66, 0.4);
}

.wt-ai-submit-btn:hover {
    background-color: var(--ai-color-yellow-h);
    transform: translateY(-2px);
}

.wt-ai-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.wt-ai-submit-btn--loading {
    position: relative;
    color: transparent;
}

.wt-ai-submit-btn--loading::after {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(61, 43, 31, 0.3);
    border-top-color: var(--ai-color-dark);
    border-radius: 50%;
    animation: wt-ai-spin 0.7s linear infinite;
}

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

/* サンクスメッセージ */
.wt-ai-thanks {
    text-align: center;
    padding: 40px 20px;
    display: none;
}

.wt-ai-thanks.is-visible {
    display: block;
}

.wt-ai-thanks__icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.wt-ai-thanks__title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--ai-color-dark);
}

.wt-ai-thanks__text {
    font-size: 0.9rem;
    color: var(--ai-color-mid);
    line-height: 1.8;
}

/* フォームエリア全体エラー */
.wt-ai-form-global-error {
    background-color: rgba(224, 90, 78, 0.08);
    border: 1px solid rgba(224, 90, 78, 0.3);
    border-radius: var(--ai-radius-sm);
    color: #c0392b;
    font-size: 0.875rem;
    padding: 12px 16px;
    margin-top: 16px;
    display: none;
}

.wt-ai-form-global-error.is-visible {
    display: block;
}

/* ============================================================
   レスポンシブ（タブレット以上）
   ============================================================ */

@media (min-width: 640px) {
    .wt-ai-achievements__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .wt-ai-reviews__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .wt-ai-pricing__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .wt-ai-option-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .wt-ai-form-wrap {
        padding: 48px;
    }
}

@media (min-width: 768px) {
    .wt-ai-section {
        padding-block: var(--ai-section-gap-desk);
    }

    .wt-ai-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================================
   ユーティリティ
   ============================================================ */

.wt-ai-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}