/* ==========================================
   【鳴白用】What's New プラグイン
   フロントエンド用スタイル - エレガントダークテーマ（目に優しい配色）
   ========================================== */

/* カラー変数 - 目に優しい配色 */
:root {
    --nakihaku-bg-dark: #1c1c1c;
    --nakihaku-bg-panel: #2a2a2a;
    --nakihaku-bg-card: #333333;
    --nakihaku-bg-hover: #3d3d3d;
    --nakihaku-border: rgba(212, 175, 55, 0.15);
    --nakihaku-border-hover: rgba(212, 175, 55, 0.35);
    --nakihaku-gold: #c9a961;
    --nakihaku-gold-bright: #d4af37;
    --nakihaku-gold-muted: #b8996e;
    --nakihaku-text-primary: #e8e8e8;
    --nakihaku-text-secondary: #b8b8b8;
    --nakihaku-text-muted: #8a8a8a;
}

/* ラッパー */
.nakihaku-whatsnew-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    background: var(--nakihaku-bg-dark);
}

/* ヘッダータイトル */
.nakihaku-whatsnew-header-title {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--nakihaku-border);
}

.nakihaku-whatsnew-header-title h2 {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--nakihaku-gold);
    margin-bottom: 12px;
    letter-spacing: 0.08em;
    text-shadow: 0 1px 3px rgba(201, 169, 97, 0.15);
}

.nakihaku-whatsnew-header-title p {
    font-size: 1rem;
    color: var(--nakihaku-text-muted);
    letter-spacing: 0.03em;
}

/* コンテナ */
.nakihaku-whatsnew-container {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* カード */
.nakihaku-whatsnew-card {
    background: var(--nakihaku-bg-panel);
    border: 1px solid var(--nakihaku-border);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.35s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.nakihaku-whatsnew-card:hover {
    border-color: var(--nakihaku-border-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    transform: translateY(-1px);
}

/* カードヘッダー */
.nakihaku-whatsnew-header {
    display: flex;
    align-items: center;
    padding: 22px 26px;
    background: var(--nakihaku-bg-panel);
    cursor: pointer;
    gap: 18px;
    transition: background 0.3s ease;
}

.nakihaku-whatsnew-header:hover {
    background: var(--nakihaku-bg-card);
}

.nakihaku-whatsnew-date {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--nakihaku-gold-muted);
    white-space: nowrap;
    font-weight: 500;
    letter-spacing: 0.03em;
}

.nakihaku-whatsnew-date-icon {
    font-size: 1.2rem;
    opacity: 0.85;
}

.nakihaku-whatsnew-title {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--nakihaku-text-primary);
    letter-spacing: 0.01em;
    line-height: 1.5;
}

.nakihaku-whatsnew-toggle {
    width: 34px;
    height: 34px;
    background: transparent;
    border: 1.5px solid var(--nakihaku-gold-muted);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.nakihaku-whatsnew-toggle:hover {
    background: var(--nakihaku-gold-muted);
    border-color: var(--nakihaku-gold);
    transform: scale(1.08);
}

.nakihaku-whatsnew-toggle-icon {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--nakihaku-gold-muted);
    border-bottom: 2px solid var(--nakihaku-gold-muted);
    transform: rotate(45deg);
    transition: all 0.3s ease;
}

.nakihaku-whatsnew-toggle:hover .nakihaku-whatsnew-toggle-icon {
    border-color: var(--nakihaku-bg-dark);
}

.nakihaku-whatsnew-card.active .nakihaku-whatsnew-toggle {
    background: var(--nakihaku-gold);
    border-color: var(--nakihaku-gold);
}

.nakihaku-whatsnew-card.active .nakihaku-whatsnew-toggle-icon {
    transform: rotate(-135deg);
    border-color: var(--nakihaku-bg-dark);
}

/* カード本文 */
.nakihaku-whatsnew-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
    padding: 0 26px;
    background: var(--nakihaku-bg-card);
}

.nakihaku-whatsnew-card.active .nakihaku-whatsnew-body {
    max-height: 2000px;
    padding: 26px;
    border-top: 1px solid var(--nakihaku-border);
}

.nakihaku-whatsnew-body p {
    margin-bottom: 1em;
    line-height: 1.75;
    color: var(--nakihaku-text-secondary);
    font-size: 0.98rem;
}

.nakihaku-whatsnew-body p:last-child {
    margin-bottom: 0;
}

.nakihaku-whatsnew-body a {
    color: var(--nakihaku-gold);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.25s ease;
}

.nakihaku-whatsnew-body a:hover {
    color: var(--nakihaku-gold-bright);
    border-bottom-color: var(--nakihaku-gold-bright);
}

.nakihaku-whatsnew-body strong {
    color: var(--nakihaku-gold);
    font-weight: 600;
}

.nakihaku-whatsnew-body ul,
.nakihaku-whatsnew-body ol {
    margin-left: 1.5em;
    margin-bottom: 1em;
    color: var(--nakihaku-text-secondary);
}

.nakihaku-whatsnew-body li {
    margin-bottom: 0.5em;
}

/* 空状態 */
.nakihaku-whatsnew-empty {
    text-align: center;
    padding: 70px 20px;
    background: var(--nakihaku-bg-panel);
    border: 2px dashed var(--nakihaku-border);
    border-radius: 10px;
}

.nakihaku-whatsnew-empty-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 20px;
    opacity: 0.7;
}

.nakihaku-whatsnew-empty p {
    font-size: 1.1rem;
    color: var(--nakihaku-text-muted);
    letter-spacing: 0.03em;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .nakihaku-whatsnew-wrapper {
        padding: 40px 15px;
    }
    
    .nakihaku-whatsnew-header-title h2 {
        font-size: 2rem;
    }
    
    .nakihaku-whatsnew-header-title p {
        font-size: 0.95rem;
    }
    
    .nakihaku-whatsnew-header {
        flex-wrap: wrap;
        gap: 12px;
        padding: 18px 20px;
    }
    
    .nakihaku-whatsnew-date {
        order: -1;
        width: 100%;
        font-size: 0.85rem;
    }
    
    .nakihaku-whatsnew-title {
        flex: 1;
        min-width: 0;
        font-size: 1.05rem;
    }
    
    .nakihaku-whatsnew-body {
        padding: 0 20px;
    }
    
    .nakihaku-whatsnew-card.active .nakihaku-whatsnew-body {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .nakihaku-whatsnew-header-title h2 {
        font-size: 1.75rem;
    }
    
    .nakihaku-whatsnew-empty {
        padding: 50px 15px;
    }
    
    .nakihaku-whatsnew-empty-icon {
        font-size: 3rem;
    }
}