/* ========================================
   FAQページ専用スタイル
   help-center.css のトンマナに合わせる（青系ブランド統一）
   ======================================== */

/* ============================================
   1. Hero — カード型ヒーロー (help-center の .hc-hero と統一)
   ============================================ */
.faq-hero {
    position: relative;
    box-sizing: border-box;
    width: calc(100vw - 2rem);
    max-width: min(72rem, calc(100vw - 2rem));
    margin: 0.75rem auto 2rem;
    padding: 3rem 1.25rem 3.5rem;
    text-align: center;
    color: #ffffff;
    overflow: hidden;
    isolation: isolate;
    border-radius: 1.5rem;
    background: linear-gradient(135deg, #1f3a8a 0%, var(--color-brand-base-primary, #4285F4) 55%, #6ba4ff 100%);
    box-shadow: 0 20px 50px -24px rgba(31, 58, 138, 0.45), 0 8px 20px -12px rgba(0, 0, 0, 0.08);
}

@media (min-width: 768px) {
    .faq-hero {
        padding: 4rem 2.5rem 4.5rem;
        margin: 1rem auto 2.5rem;
        border-radius: 1.75rem;
    }
}

.faq-hero__bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.faq-hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
    -webkit-mask-image: radial-gradient(ellipse at 50% 30%, rgba(0, 0, 0, 0.8) 0%, transparent 70%);
    mask-image: radial-gradient(ellipse at 50% 30%, rgba(0, 0, 0, 0.8) 0%, transparent 70%);
}

.faq-hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
}

.faq-hero__glow--1 {
    width: 420px;
    height: 420px;
    background: rgba(139, 180, 255, 0.5);
    top: -80px;
    left: -120px;
}

.faq-hero__glow--2 {
    width: 520px;
    height: 520px;
    background: rgba(64, 120, 220, 0.45);
    bottom: -200px;
    right: -140px;
}

.faq-hero__inner {
    position: relative;
    width: 100%;
    min-width: 0;
    max-width: 48rem;
    margin: 0 auto;
}

.faq-hero__eyebrow {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.25rem;
}

.faq-hero__title {
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    color: #ffffff;
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    letter-spacing: -0.01em;
}

.faq-hero__subtitle {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    overflow-wrap: anywhere;
}

/* ============================================
   2. Search (hero 内)
   ============================================ */
.faq-search {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    max-width: 42rem;
    margin: 0 auto;
}

.faq-search__icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-brand-base-primary, #4285F4);
    font-size: 1.5rem !important;
    pointer-events: none;
    z-index: 1;
}

input.faq-search__input[type="search"] {
    box-sizing: border-box;
    width: 100%;
    height: 4rem;
    padding: 0 3.5rem 0 3.5rem;
    font-size: 1.0625rem;
    background: #ffffff;
    border: 2px solid transparent;
    border-radius: 9999px;
    color: var(--color-text-main, #1a1a1a);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18), 0 2px 6px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

@media (max-width: 640px) {
    .faq-hero {
        width: calc(100vw - 1rem);
        max-width: calc(100vw - 1rem);
        padding: 2.5rem 1rem 3rem;
        border-radius: 1.25rem;
    }

    .faq-hero__inner {
        max-width: calc(100vw - 3rem);
    }

    .faq-hero__subtitle {
        max-width: 18rem;
        margin-left: auto;
        margin-right: auto;
        font-size: 0.95rem;
    }

    .faq-search {
        max-width: 19rem;
    }

    input.faq-search__input[type="search"] {
        height: 3.5rem;
        padding-left: 3rem;
        padding-right: 2.75rem;
        font-size: 0.95rem;
    }

    .faq-keywords {
        width: 19rem;
        max-width: 19rem;
        margin-left: auto;
        margin-right: auto;
    }

    .faq-keywords__label {
        flex-basis: 100%;
        margin-right: 0;
    }
}

input.faq-search__input[type="search"]::placeholder {
    color: #9a9a9a;
}

input.faq-search__input[type="search"]:focus {
    outline: none;
    border-color: var(--color-brand-base-primary, #4285F4);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2), 0 0 0 4px rgba(66, 133, 244, 0.25);
}

/* クリアボタン: input 内右端 */
.faq-clear-btn {
    position: absolute;
    right: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    background-color: rgba(0, 0, 0, 0.06);
    color: var(--color-text-sub, #6b6b6b);
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
    z-index: 2;
}

.faq-clear-btn:hover {
    transform: translateY(-50%) scale(1.08);
    background-color: rgba(66, 133, 244, 0.12);
    color: var(--color-brand-base-primary, #4285F4);
}

.faq-clear-btn:focus-visible {
    outline: 2px solid var(--color-brand-base-primary, #4285F4);
    outline-offset: 2px;
}

.faq-clear-btn.hidden {
    display: none;
}

/* ============================================
   3. Keyword chips (hero 下)
   help-center の .hc-keywords と同等のスタイル
   ============================================ */
.faq-keywords {
    max-width: 100%;
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.faq-keywords__label {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.85);
    margin-right: 0.25rem;
}

/* help-center.css の .keyword-chip を上書き（白チップ+青文字に統一） */
.faq-hero .keyword-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.92);
    color: var(--color-brand-base-primary, #4285F4);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    max-width: 100%;
    text-decoration: none;
    white-space: normal;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.faq-hero .keyword-chip:hover {
    transform: translateY(-1px);
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.8);
}

.faq-hero .keyword-chip:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

/* ============================================
   4. Main container
   ============================================ */
.faq-main {
    width: 100%;
    max-width: 72rem;
    margin: 0 auto;
    padding: 0 1rem 4rem;
}

@media (min-width: 640px) { .faq-main { padding-left: 1.5rem; padding-right: 1.5rem; } }
@media (min-width: 1024px) { .faq-main { padding-left: 2rem; padding-right: 2rem; } }

/* パンくず内リンク (help-center と同じ配色に) */
#breadcrumb-container .text-secondary {
    color: var(--color-brand-base-primary, #4285F4);
}

/* ============================================
   5. Bento カテゴリカード
   help-center の .hc-cat-card を FAQ 用に流用
   ============================================ */
.faq-category-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: #ffffff;
    border: 1px solid var(--color-base-border-divider, #e0e0e0);
    border-radius: 1rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    overflow: hidden;
}

.faq-category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    opacity: 0.9;
}

.faq-category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
}

.faq-category-card:focus-visible {
    outline: 2px solid var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    outline-offset: 3px;
}

.faq-category-card__header {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 1rem;
}

.faq-category-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.75rem;
    background: color-mix(in srgb, var(--hc-accent, #4285F4) 12%, transparent);
    color: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    flex-shrink: 0;
}

.faq-category-card__icon .material-icons {
    font-size: 1.5rem !important;
}

.faq-category-card__title-wrap { min-width: 0; }

.faq-category-card__title {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text-main, #1a1a1a);
    line-height: 1.35;
    margin: 0;
}

.faq-category-card__desc {
    font-size: 0.8125rem;
    color: var(--color-text-sub, #6b6b6b);
    margin-top: 0.125rem;
}

.faq-category-card__questions {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.faq-category-card__question {
    display: flex;
    align-items: flex-start;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--color-text-sub, #6b6b6b);
    line-height: 1.45;
}

.faq-category-card__question .material-icons {
    color: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    font-size: 1rem !important;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.faq-category-card__more {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    margin-top: auto;
}

.faq-category-card__more .material-icons {
    font-size: 1rem !important;
    transition: transform 0.2s ease;
}

.faq-category-card:hover .faq-category-card__more .material-icons {
    transform: translateX(3px);
}

.faq-category-card__count-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.125rem 0.5rem;
    background: color-mix(in srgb, var(--hc-accent, #4285F4) 12%, transparent);
    color: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* ============================================
   6. カテゴリ別Q&A セクション見出し
   ============================================ */
/* カテゴリアンカー遷移時: メインヘッダー(4rem) + sticky 検索バー(約3.5rem) の下に
   見出しが潜り込まないよう scroll-margin-top を確保 */
.faq-category-block {
    scroll-margin-top: 7rem;
}

.faq-category-heading {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-main, #1a1a1a);
    padding: 0.25rem 0 0.25rem 0.875rem;
    border-left: 4px solid var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    margin-bottom: 1rem;
}

.faq-category-heading .material-icons {
    color: var(--hc-accent, var(--color-brand-base-primary, #4285F4));
    font-size: 1.5rem;
}

.faq-category-heading .faq-category-desc {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--color-text-sub, #6b6b6b);
    margin-left: 0.5rem;
}

/* ============================================
   7. アコーディオン本体
   ============================================ */
.faq-item {
    border: 1px solid var(--color-base-border-divider, #e0e0e0);
    border-radius: 0.75rem;
    background-color: #ffffff;
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.25s ease;
}

.faq-item:hover {
    border-color: var(--color-brand-base-primary, #4285F4);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.04);
}

.faq-item.is-open {
    border-color: var(--color-brand-base-primary, #4285F4);
    box-shadow: 0 8px 20px rgba(66, 133, 244, 0.12);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 1rem 3rem 1rem 1.25rem;
    cursor: pointer;
    background-color: transparent;
    border: none;
    font-weight: 600;
    text-align: left;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--color-text-main, #1a1a1a);
    transition: background-color 0.2s ease, color 0.2s ease;
    position: relative;
}

.faq-question:hover {
    background-color: rgba(66, 133, 244, 0.05);
    color: var(--color-brand-base-primary, #4285F4);
}

.faq-question:focus-visible {
    outline: 2px solid var(--color-brand-base-primary, #4285F4);
    outline-offset: 2px;
    border-radius: 0.75rem;
}

.faq-question .faq-question-label {
    display: inline-flex;
    align-items: flex-start;
    gap: 0.625rem;
    flex: 1;
}

.faq-question .faq-q-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 9999px;
    background: color-mix(in srgb, var(--color-brand-base-primary, #4285F4) 12%, transparent);
    color: var(--color-brand-base-primary, #4285F4);
    font-weight: 700;
    font-size: 0.8125rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.faq-icon {
    transition: transform 0.3s ease, color 0.2s ease;
    color: var(--color-text-sub, #6b6b6b);
    flex-shrink: 0;
}

.faq-item.is-open .faq-icon {
    transform: rotate(180deg);
    color: var(--color-brand-base-primary, #4285F4);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
    padding: 0 1.25rem;
    color: var(--color-text-main, #1a1a1a);
}

.faq-item.is-open .faq-answer {
    max-height: var(--faq-answer-height, 2000px);
    padding: 1.25rem 1.25rem 1.5rem;
    border-top: 1px solid var(--color-base-border-divider, #e0e0e0);
    line-height: 1.8;
}

.faq-answer p {
    word-break: break-word;
}

/* 「注目の質問」Pick バッジ: 右肩 absolute */
.faq-item.is-featured .faq-question::after {
    content: 'Pick';
    position: absolute;
    top: 0.625rem;
    right: 0.75rem;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    background: color-mix(in srgb, var(--color-brand-base-primary, #4285F4) 15%, transparent);
    color: var(--color-brand-base-primary, #4285F4);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    pointer-events: none;
}

.faq-item.is-featured .faq-question {
    padding-right: 4.5rem;
}

/* ============================================
   8. フィードバックUI
   ============================================ */
.feedback-section {
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--color-base-border-divider, #e0e0e0);
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-sub, #6b6b6b);
}

.feedback-section .feedback-label {
    display: inline-block;
    margin-bottom: 0.75rem;
}

.feedback-buttons {
    display: inline-flex;
    gap: 0.625rem;
}

.feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1.125rem;
    border: 1px solid var(--color-base-border-divider, #e0e0e0);
    border-radius: 9999px;
    background-color: #ffffff;
    color: var(--color-text-sub, #6b6b6b);
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
}

.feedback-btn:hover {
    background-color: rgba(66, 133, 244, 0.05);
    color: var(--color-brand-base-primary, #4285F4);
    border-color: var(--color-brand-base-primary, #4285F4);
}

.feedback-btn:active {
    transform: scale(0.97);
}

.feedback-btn:focus-visible {
    outline: 2px solid var(--color-brand-base-primary, #4285F4);
    outline-offset: 2px;
}

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

.feedback-thanks {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    background: color-mix(in srgb, var(--color-brand-base-primary, #4285F4) 12%, transparent);
    color: var(--color-brand-base-primary, #4285F4);
    font-weight: 600;
    animation: faqFadeIn 0.35s ease-out;
}

.feedback-thanks .material-icons {
    font-size: 1.125rem;
}

/* ============================================
   9. 検索結果ステータス
   ============================================ */
.faq-search-status {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(90deg, #f4f7ff 0%, #eaf1ff 100%);
    color: var(--color-brand-base-primary, #4285F4);
    border: 1px solid rgba(66, 133, 244, 0.2);
    border-radius: 0.75rem;
    font-size: 0.875rem;
}

.faq-search-status .count {
    font-weight: 700;
}

/* 検索ハイライト */
.faq-item mark,
.faq-category-card mark {
    background-color: var(--color-state-warning, #FFC107);
    color: var(--color-state-on-warning, #1a1a1a);
    padding: 0.05em 0.2em;
    border-radius: 0.2em;
}

/* ============================================
   10. ローディング/エラー/CTA周り
   ============================================ */
#loading-indicator,
#no-results-message,
#error-message {
    color: var(--color-text-sub, #6b6b6b);
}

#error-message {
    padding: 1rem;
    border-radius: 0.75rem;
    background-color: #fff5f5;
    color: #b42318;
    border: 1px solid #f3c5c5;
    text-align: center;
}

.faq-cta-wrap {
    margin-top: 2rem;
}

/* ============================================
   11. アニメーション
   ============================================ */
@keyframes faqFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.faq-item {
    animation: faqFadeIn 0.3s ease-out both;
}

/* モーション低減設定への配慮 */
@media (prefers-reduced-motion: reduce) {
    .faq-item,
    .faq-answer,
    .faq-icon,
    .faq-clear-btn,
    .feedback-btn,
    .feedback-thanks,
    .faq-category-card,
    .faq-category-card__icon {
        animation: none !important;
        transition: none !important;
    }
}