/* =====================
    変数・リセット
===================== */

:root {
    --color-bg:       #1a0a2e;
    --color-surface:  #21103d;
    --color-card:     #2d1657;
    --color-accent:   #c084fc;
    --color-accent2:  #f9a825;
    --color-accent3:  #a78bfa;
    --color-text:     #f3e8ff;
    --color-muted:    #a78bfa;
    --color-border:   rgba(192, 132, 252, 0.2);
    --color-tab-bg:   #2d1657;
    --radius:         12px;
    --font-main:      'M PLUS Rounded 1c', sans-serif;
    --font-body:      'Noto Sans JP', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.8;
    min-height: 100vh;
}

/* =====================
    ヘッダー
===================== */

.site-header {
    background: linear-gradient(135deg, #2d1657 0%, #1a0a2e 100%);
    border-bottom: 2px solid var(--color-border);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.site-header a {
    color: var(--color-accent);
    text-decoration: none;
    font-family: var(--font-main);
    font-size: 0.9rem;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.site-header a:hover {
    opacity: 1;
}

.header-title {
    font-family: var(--font-main);
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    font-weight: 800;
    color: var(--color-text);
}

/* =====================
    ヒーロー
===================== */

.faq-hero {
    text-align: center;
    padding: 64px 24px 48px;
    position: relative;
    overflow: hidden;
}

.faq-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
    radial-gradient(ellipse at 30% 50%, rgba(192, 132, 252, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(167, 139, 250, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.faq-hero-label {
    display: inline-block;
    background: rgba(192, 132, 252, 0.15);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-family: var(--font-main);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    padding: 4px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.faq-hero h1 {
    font-family: var(--font-main);
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #f3e8ff 0%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.faq-hero p {
    color: var(--color-muted);
    font-size: 0.95rem;
    max-width: 480px;
    margin: 0 auto;
}

/* =====================
    ゲームタブ（上段）
===================== */

.game-tabs-wrap {
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.game-tabs {
    display: flex;
    overflow-x: auto;
    scrollbar-width: none;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 16px;
    gap: 4px;
}

.game-tabs::-webkit-scrollbar {
    display: none;
}

.game-tab {
    flex-shrink: 0;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--color-muted);
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 16px 20px 13px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.game-tab:hover {
    color: var(--color-text);
}

.game-tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* =====================
    カテゴリナビ（下段）
===================== */

.category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 24px 24px 32px;
    max-width: 900px;
    margin: 0 auto;
}

.category-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-muted);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 8px 20px;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.2s;
}

.category-btn:hover,
.category-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #1a0a2e;
}

/* =====================
    FAQメイン
===================== */

.faq-main {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

/* ローディング・エラー */

.status-message {
    text-align: center;
    padding: 60px 24px;
    color: var(--color-muted);
    font-family: var(--font-main);
}

.status-message .icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 12px;
    animation: spin 1.5s linear infinite;
}

.status-message.error .icon {
    animation: none;
}

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

/* ゲームパネル */

.game-panel {
    display: none;
}

.game-panel.active {
    display: block;
}

/* カテゴリセクション */

.faq-category {
    margin-bottom: 48px;
}

.faq-category-title {
    font-family: var(--font-main);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

.faq-category-title::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* アコーディオン */

.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 10px;
    overflow: hidden;
    transition: border-color 0.2s;
}

.faq-item:hover {
    border-color: rgba(192, 132, 252, 0.4);
}

.faq-item.open {
    border-color: var(--color-accent);
}

.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 700;
    text-align: left;
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    line-height: 1.6;
}

.faq-question-text {
    flex: 1;
}

.faq-question-text::before {
    content: 'Q. ';
    color: var(--color-accent);
    font-family: var(--font-main);
    font-weight: 800;
}

.faq-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1.5px solid var(--color-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--color-muted);
    transition: all 0.25s;
    margin-top: 2px;
}

.faq-item.open .faq-icon {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-answer-inner {
    padding: 16px 20px 20px 20px;
    color: var(--color-muted);
    font-size: 0.9rem;
    line-height: 1.9;
    border-top: 1px solid var(--color-border);
}

.faq-answer-inner::before {
    content: 'A. ';
    color: var(--color-accent2);
    font-family: var(--font-main);
    font-weight: 800;
}

.faq-answer-image {
    display: block;
    max-width: 100%;
    height: auto;
    margin-top: 16px;
    border-radius: 8px;
}

/* =====================
    お問い合わせフォーム
===================== */

.contact-section {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-card) 100%);
    border-top: 2px solid var(--color-border);
    padding: 64px 24px;
}

.contact-inner {
    max-width: 800px;
    margin: 0 auto;
}

.contact-label {
    display: inline-block;
    background: rgba(249, 168, 37, 0.15);
    border: 1px solid var(--color-accent2);
    color: var(--color-accent2);
    font-family: var(--font-main);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    padding: 4px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.contact-title {
    font-family: var(--font-main);
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 800;
    margin-bottom: 12px;
}

.contact-desc {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-bottom: 36px;
    line-height: 1.8;
}

.form-embed-wrap {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.form-embed-wrap iframe {
    display: block;
    width: 100%;
    border: none;
    min-height: 600px;
}

/* =====================
    フッター
===================== */

footer {
    text-align: center;
    padding: 24px;
    color: var(--color-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--color-border);
}

footer a {
    color: var(--color-accent);
    text-decoration: none;
}

/* =====================
    レスポンシブ
===================== */

@media (max-width: 600px) {

    .faq-hero {
    padding: 40px 16px 32px;
    }

    .faq-main {
    padding: 0 16px 60px;
    }

    .game-tab {
    font-size: 0.82rem;
    padding: 14px 14px 11px;
    }

    .faq-question {
    font-size: 0.88rem;
    padding: 14px 16px;
    }

    .faq-answer-inner {
    font-size: 0.85rem;
    }
}