/* =============================================
   layout.css — ヘッダー・フッター・カード・グリッド
   ============================================= */

/* --- ヘッダー --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.site-logo {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-strong);
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-logo span {
    color: var(--accent);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.header-nav__link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: color var(--transition), background var(--transition);
    min-height: 44px;
}

.header-nav__link:hover,
.header-nav__link.is-active {
    color: var(--text);
    background: var(--bg-surface);
}

.header-nav__icon {
    font-size: 1.1rem;
}

/* スマホではナビのテキストを非表示にしてアイコンのみ表示 */
@media (max-width: 479px) {
    .header-nav__link {
        padding: 8px 7px;
        gap: 0;
    }
    .header-nav__link span:not(.header-nav__icon) {
        display: none;
    }
    .header-nav__icon {
        font-size: 1.3rem;
    }
}

/* --- メインレイアウト --- */
.page-main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 12px 80px;
}

/* --- セクションタイトル --- */
.section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-strong);
    padding: 0 0 12px;
    border-bottom: 2px solid var(--accent);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-title__icon {
    color: var(--accent);
}

/* --- 作品カードグリッド --- */
.item-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

@media (min-width: 480px) {
    .item-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
}

@media (min-width: 768px) {
    .item-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
    }
}

/* --- 作品カード --- */
.item-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

.item-card:active {
    transform: scale(0.97);
}

@media (hover: hover) {
    .item-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
        border-color: var(--border-light);
    }
}

.item-card__thumb {
    position: relative;
    aspect-ratio: 7 / 10;
    overflow: hidden;
    background: var(--bg-surface);
}

.item-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

@media (hover: hover) {
    .item-card:hover .item-card__thumb img {
        transform: scale(1.04);
    }
}

.item-card__new-badge {
    position: absolute;
    top: 6px;
    left: 6px;
    font-size: 0.65rem;
    font-weight: 700;
    background: var(--badge-new);
    color: #fff;
    padding: 2px 6px;
    border-radius: 4px;
    line-height: 1.4;
}

.item-card__body {
    padding: 8px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.item-card__title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-card__circle {
    font-size: 0.72rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 4px;
}

.item-card__price {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--accent-light);
}

.item-card__pages {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.item-card__link {
    position: absolute;
    inset: 0;
    z-index: 1;
}

/* --- フィルターバー --- */
.filter-bar {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 16px;
}

.filter-bar__row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.filter-bar__group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 120px;
}

.filter-bar__label {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.filter-bar__input,
.filter-bar__select {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 8px 10px;
    font-size: 0.85rem;
    min-height: 40px;
    width: 100%;
    transition: border-color var(--transition);
    -webkit-appearance: none;
    appearance: none;
}

.filter-bar__input:focus,
.filter-bar__select:focus {
    outline: none;
    border-color: var(--accent);
}

.filter-bar__select-wrap {
    position: relative;
}

.filter-bar__select-wrap::after {
    content: "▾";
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    font-size: 0.8rem;
}

.filter-bar__actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

/* --- ページネーション --- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.pagination__item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.pagination__item:hover {
    color: var(--text);
    border-color: var(--border-light);
    background: var(--bg-surface);
}

.pagination__item.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.pagination__item.is-disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* --- トップページ ヒーローエリア --- */
.hero-date {
    text-align: center;
    padding: 16px 0 8px;
}

.hero-date__label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-date__value {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-strong);
    margin-top: 2px;
}

.hero-date__count {
    font-size: 0.8rem;
    color: var(--accent-light);
    margin-top: 4px;
}

/* --- ランダムワープボタン --- */
.random-warp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #2a0a1a, #1a0a2a);
    border: 1px solid rgba(233, 30, 140, 0.4);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 20px;
    transition: border-color var(--transition), background var(--transition);
}

.random-warp-btn:hover {
    border-color: var(--accent);
    background: linear-gradient(135deg, #3a0a2a, #2a0a3a);
    color: var(--text);
}

.random-warp-btn__icon {
    font-size: 1.3rem;
    animation: spin-slow 4s linear infinite;
}

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

/* --- フッター --- */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 24px 16px;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 40px;
    line-height: 1.8;
}

.site-footer a {
    color: var(--text-muted);
}
.site-footer a:hover {
    color: var(--text);
}