/* フィルターセクション */
.video-filters {
    margin-bottom: 30px;
    animation: slideDown 0.4s ease-out;
}

/* 検索グループ */
.search-group {
    background: rgba(0, 255, 135, 0.05);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 135, 0.2);
}

/* 検索ボックス */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 14px 45px 14px 18px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 255, 135, 0.5);
    box-shadow: 0 0 20px rgba(0, 255, 135, 0.2);
}

.search-input::placeholder {
    color: #666;
}

.clear-search {
    position: absolute;
    right: 12px;
    background: rgba(255, 0, 0, 0.2);
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff6b6b;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.clear-search:hover {
    background: rgba(255, 0, 0, 0.4);
    border-color: rgba(255, 0, 0, 0.5);
    transform: scale(1.1);
}

.search-results {
    margin-top: 10px;
    padding: 10px;
    background: rgba(0, 255, 135, 0.1);
    border-radius: 8px;
    color: #00ff87;
    font-size: 0.9rem;
    display: none;
}

.search-results.active {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.filter-section {
    background: rgba(26, 26, 26, 0.6);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
}

.filter-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

/* フィルター折りたたみボタン */
.filter-toggle-btn {
    margin-left: auto;
    background: rgba(0, 255, 135, 0.1);
    border: 1px solid rgba(0, 255, 135, 0.3);
    color: #00ff87;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.filter-toggle-btn:hover {
    background: rgba(0, 255, 135, 0.2);
    border-color: rgba(0, 255, 135, 0.5);
}

.toggle-icon-filter {
    display: inline-block;
    transition: transform 0.3s ease;
}

.filter-section.collapsed .toggle-icon-filter {
    transform: rotate(-90deg);
}

.filter-section.collapsed .filter-content {
    display: none;
}

.filter-icon {
    font-size: 1.5rem;
}

.filter-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.filter-content {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.filter-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* カテゴリフィルター */
.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-option {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-option:hover {
    background: rgba(0, 255, 135, 0.1);
    border-color: rgba(0, 255, 135, 0.5);
    color: #00ff87;
    transform: translateY(-2px);
}

.filter-option.active {
    background: rgba(0, 255, 135, 0.2);
    color: #00ff87;
    border-color: #00ff87;
    font-weight: 600;
}

.filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.filter-option.active .filter-count {
    background: rgba(0, 0, 0, 0.2);
    color: #000;
}

/* タグフィルター */
.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-tag {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    color: #bbb;
    text-decoration: none;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-tag:hover {
    background: rgba(0, 255, 135, 0.15);
    border-color: rgba(0, 255, 135, 0.4);
    color: #00ff87;
    transform: scale(1.05);
}

.filter-tag.active {
    background: #00ff87;
    color: #000;
    border-color: transparent;
    font-weight: 700;
    box-shadow: 0 0 15px rgba(0, 255, 135, 0.4);
}

/* リセットボタン */
.filter-reset {
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.reset-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 0, 0, 0.1);
    color: #ff6b6b;
    text-decoration: none;
    border-radius: 10px;
    border: 1px solid rgba(255, 0, 0, 0.2);
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 600;
}

.reset-button:hover {
    background: rgba(255, 0, 0, 0.2);
    border-color: rgba(255, 0, 0, 0.4);
    transform: translateX(-5px);
}

/* レスポンシブ */
@media (max-width: 768px) {
    .filter-section {
        padding: 20px;
    }
    
    .filter-header {
        margin-bottom: 15px;
    }
    
    .filter-title {
        font-size: 1.1rem;
    }
    
    .filter-option,
    .filter-tag {
        font-size: 0.85rem;
        padding: 8px 14px;
    }
    
    .filter-options,
    .filter-tags {
        gap: 8px;
    }
}

/* フィルター適用時のアニメーション */
@keyframes filterApply {
    0% {
        opacity: 0.5;
        transform: scale(0.98);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.video-grid,
.horizontal-video-grid {
    animation: filterApply 0.3s ease-out;
}