/* ===========================================
   AI画像ギャラリー 共通CSS
   Material / shadcn/ui スタイル
   =========================================== */

/* ヒーローセクション */
.hero-section {
    color: white;
    text-align: center;
    padding: 4rem 2rem;
    position: relative;
    background: var(--text-primary);
}

.hero-section--compact {
    padding: 3rem 2rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.85;
}

.hero-subtitle--en {
    font-size: 1rem;
    opacity: 0.75;
    font-style: italic;
    margin-bottom: 0.25rem;
}

/* ヒーロー検索フォーム */
.hero-search-form {
    max-width: 500px;
    margin: 0 auto;
}

.hero-search-container {
    display: flex;
    gap: 0.5rem;
    background: white;
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-search-input {
    flex: 1;
    border: none;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    outline: none;
    border-radius: 6px;
    color: #1c1917;
    background: transparent;
}

.hero-search-button {
    border-radius: 6px;
    padding: 0.75rem 1.5rem;
    white-space: nowrap;
}

/* 検索フォームモバイル対応 */
@media (max-width: 600px) {
    .hero-section {
        padding: 2.5rem 1rem;
    }

    .hero-section--compact {
        padding: 2rem 1rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-search-container {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.75rem;
    }

    .hero-search-input {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        width: 100%;
    }

    .hero-search-button {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        width: 100%;
    }
}

@media (max-width: 350px) {
    .hero-search-container {
        gap: 0.25rem;
        padding: 0.4rem;
    }

    .hero-search-input {
        padding: 0.4rem 0.75rem;
        font-size: 0.875rem;
    }

    .hero-search-button {
        padding: 0.4rem 0.75rem;
        font-size: 0.875rem;
    }
}

/* CTAセクション */
.cta-section {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: 12px;
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.cta-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.cta-text {
    font-size: 1rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

/* フラッシュメッセージ */
.alert {
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 8px;
}

.alert-error {
    background: #fee;
    border-left: 4px solid #c33;
    color: #c33;
}

.alert-success {
    background: #d1fae5;
    border: 2px solid #10b981;
    color: #065f46;
}

/* 画像カード内ダウンロードボタン */
.image-card-info .btn-primary {
    font-size: 0.8rem;
    padding: 0.4rem 1rem;
    background: var(--text-primary);
    color: var(--bg-body);
    border: none;
    transition: opacity 150ms ease;
}

.image-card-info .btn-primary:hover {
    opacity: 0.85;
}

/* おすすめセクションリンク */
.featured-link {
    display: inline-block;
    background: transparent;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: background 150ms ease;
    border: 1px solid var(--border);
}

.featured-link:hover {
    background: var(--bg-muted);
}

/* ページネーション */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 3rem auto;
    max-width: 800px;
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--text-primary);
    color: var(--bg-body);
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 150ms ease;
}

.pagination-btn:hover {
    opacity: 0.85;
}

.pagination-btn--disabled {
    padding: 0.75rem 1.25rem;
    opacity: 0.3;
    color: var(--gray);
    cursor: default;
}

.pagination-numbers {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.pagination-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background 150ms ease;
}

.pagination-num--active {
    background: var(--text-primary);
    color: var(--bg-body);
}

.pagination-num--link {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.pagination-num--link:hover {
    background: var(--bg-muted);
    border-color: var(--border-hover);
}

.pagination-ellipsis {
    padding: 0 0.5rem;
    color: var(--gray);
}

/* キャプションホバー */
.image-caption:hover {
    color: var(--accent) !important;
    text-decoration: underline !important;
}

/* Back to Topボタン */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 6px;
    background: var(--text-primary);
    color: var(--bg-body);
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 150ms ease;
    opacity: 0;
    visibility: hidden;
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    opacity: 0.85;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 40px;
        height: 40px;
        font-size: 1.125rem;
    }
}

/* モバイルメニューオーバーレイ */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 200ms;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}