/* ============================================
   素材页面样式
   分类标签 / 搜索筛选 / 上传弹窗 / 素材网格
   ============================================ */

.materials-page { padding: 24px 0 60px; }

/* --- 顶部操作栏（搜索/筛选/上传） --- */
.mat-actions-bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; flex-wrap: wrap; gap: 10px; }

.mat-actions-left { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.mat-actions-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.mat-search { position: relative; }
.mat-search-input { padding: 8px 14px 8px 36px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-full); color: #fff; font-size: 0.84rem; font-family: var(--font-family); outline: none; width: 220px; transition: border-color var(--transition); }
.mat-search-input:focus { border-color: var(--color-primary); width: 260px; }
.mat-search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 0.85rem; color: var(--text-muted); pointer-events: none; }

.mat-filter-btn { padding: 8px 16px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-full); color: var(--text-secondary); font-size: 0.84rem; cursor: pointer; transition: all var(--transition); font-family: var(--font-family); display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.mat-filter-btn:hover { border-color: rgba(79,110,246,0.3); color: #fff; }
.mat-filter-btn.active-filter { border-color: var(--color-primary); background: rgba(79,110,246,0.08); color: var(--color-primary-light); }
.mat-upload-btn { padding: 9px 22px; background: var(--gradient-primary); border: none; border-radius: var(--radius-full); color: #fff; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all var(--transition); font-family: var(--font-family); white-space: nowrap; box-shadow: 0 2px 10px rgba(79,110,246,0.25); }
.mat-upload-btn:hover { box-shadow: 0 4px 18px rgba(79,110,246,0.4); transform: translateY(-1px); }

/* --- 分类标签（第二行） --- */
.mat-cats-bar { display: flex; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 8px; }
.mat-cats { display: flex; gap: 6px; overflow-x: auto; flex: 1; scrollbar-width: none; padding-bottom: 2px; }
.mat-cats::-webkit-scrollbar { display: none; }

.mat-cat-btn { padding: 8px 20px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-full); color: var(--text-secondary); font-size: 0.84rem; cursor: pointer; transition: all var(--transition); font-family: var(--font-family); white-space: nowrap; flex-shrink: 0; }
.mat-cat-btn:hover { border-color: rgba(79,110,246,0.3); color: #fff; background: rgba(79,110,246,0.04); }
.mat-cat-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.mat-cat-btn .count { font-size: 0.7rem; opacity: 0.7; margin-left: 4px; }

.mat-cat-add { padding: 8px 18px; background: transparent; border: 1px dashed rgba(255,255,255,0.15); border-radius: var(--radius-full); color: var(--text-muted); font-size: 0.84rem; cursor: pointer; transition: all var(--transition); font-family: var(--font-family); white-space: nowrap; flex-shrink: 0; }
.mat-cat-add:hover { border-color: var(--color-primary-light); color: var(--color-primary-light); background: rgba(79,110,246,0.04); }
.mat-cat-add.active { border-color: var(--color-primary); color: var(--color-primary-light); background: rgba(79,110,246,0.08); }

/* --- 主内容区弹性布局 --- */
.mat-main-area { display: flex; gap: 16px; align-items: flex-start; }

/* --- 标签管理容器 — 9:16左侧面板 --- */
.mat-tag-mgr { display: none; width: 180px; flex-shrink: 0; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 14px; aspect-ratio: 9 / 16; max-height: 600px; overflow: hidden; flex-direction: column; }
.mat-tag-mgr.show { display: flex; }
.mat-tag-mgr-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 3px; margin-bottom: 10px; scrollbar-width: thin; }
.mat-tag-mgr-list::-webkit-scrollbar { width: 4px; }
.mat-tag-mgr-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.06); border-radius: 2px; }
.mat-tag-mgr-item { display: flex; align-items: center; gap: 6px; padding: 7px 8px; border-radius: 6px; transition: all var(--transition); flex-wrap: wrap; }
.mat-tag-mgr-item:hover { background: rgba(255,255,255,0.02); }
.mat-tag-mgr-name { flex: 1; font-size: 0.78rem; color: #fff; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.mat-tag-mgr-count { font-size: 0.68rem; color: var(--text-muted); background: rgba(255,255,255,0.03); padding: 2px 7px; border-radius: 8px; flex-shrink: 0; }
.mat-tag-mgr-dots { width: 24px; height: 24px; border-radius: 4px; background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.8rem; display: flex; align-items: center; justify-content: center; transition: all var(--transition); position: relative; flex-shrink: 0; }
.mat-tag-mgr-dots:hover { background: rgba(255,255,255,0.05); color: #fff; }

/* 标签操作下拉 */
.mat-tag-action-drop { position: absolute; right: 0; top: 100%; background: #1e1e3a; border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; padding: 3px; z-index: 100; min-width: 110px; box-shadow: 0 8px 28px rgba(0,0,0,0.5); display: none; }
.mat-tag-action-drop.show { display: block; }
.mat-tag-action-item { display: flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 5px; font-size: 0.74rem; color: #a0a0c0; cursor: pointer; transition: all var(--transition); border: none; background: transparent; width: 100%; text-align: left; font-family: var(--font-family); }
.mat-tag-action-item:hover { background: rgba(255,255,255,0.05); color: #fff; }
.mat-tag-action-item.danger:hover { background: rgba(239,68,68,0.08); color: #ef4444; }

/* 底部创建标签行 */
.mat-tag-mgr-add { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }
.mat-tag-mgr-add input { padding: 8px 10px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 6px; color: #fff; font-size: 0.78rem; font-family: var(--font-family); outline: none; width: 100%; }
.mat-tag-mgr-add input:focus { border-color: var(--color-primary); }
.mat-tag-mgr-add button { padding: 7px 10px; background: var(--color-primary); border: none; border-radius: 6px; color: #fff; font-size: 0.8rem; font-weight: 600; cursor: pointer; font-family: var(--font-family); }

/* --- 筛选下拉菜单 --- */
.mat-dropdown { position: fixed; background: #15152a; border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 6px; z-index: 500; min-width: 180px; box-shadow: 0 10px 36px rgba(0,0,0,0.6); display: none; }
.mat-dropdown.show { display: block; }
.mat-dropdown-item { display: flex; align-items: center; gap: 10px; padding: 9px 14px; border-radius: 7px; font-size: 0.84rem; color: #a0a0c0; cursor: pointer; transition: all var(--transition); border: none; background: transparent; width: 100%; text-align: left; font-family: var(--font-family); }
.mat-dropdown-item:hover { background: rgba(255,255,255,0.04); color: #fff; }
.mat-dropdown-item.active { color: var(--color-primary-light); }

/* --- 素材网格 --- */
.mat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

.mat-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; cursor: pointer; transition: all var(--transition); position: relative; }
.mat-card:hover { border-color: rgba(79,110,246,0.35); transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,0,0,0.4); }

.mat-card-thumb { aspect-ratio: 16/12; background: #0a0a18; display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.mat-card-thumb img, .mat-card-thumb video { width: 100%; height: 100%; object-fit: cover; }
.mat-card-thumb .audio-thumb { display: flex; flex-direction: column; align-items: center; gap: 8px; color: #6b6b8a; font-size: 0.8rem; }
.mat-card-thumb .audio-thumb .icon { font-size: 2.5rem; }
.mat-card-type-badge { position: absolute; top: 8px; left: 8px; padding: 3px 8px; border-radius: 4px; font-size: 0.65rem; font-weight: 600; color: #fff; z-index: 2; }
.mat-card-type-badge.image { background: rgba(79,110,246,0.7); }
.mat-card-type-badge.video { background: rgba(168,85,247,0.7); }
.mat-card-type-badge.audio { background: rgba(234,179,8,0.7); }
.mat-card-duration { position: absolute; bottom: 6px; right: 6px; padding: 2px 6px; border-radius: 3px; background: rgba(0,0,0,0.7); font-size: 0.65rem; color: #fff; }

.mat-card-body { padding: 12px; }
.mat-card-title { font-size: 0.84rem; font-weight: 500; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mat-card-meta { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.mat-card-tag { padding: 2px 8px; background: rgba(79,110,246,0.08); border: 1px solid rgba(79,110,246,0.12); border-radius: var(--radius-full); font-size: 0.68rem; color: var(--color-primary-light); }
.mat-card-date { font-size: 0.7rem; color: var(--text-muted); margin-top: 4px; }
.mat-card-actions { position: absolute; top: 8px; right: 8px; display: flex; gap: 3px; opacity: 0; transition: opacity var(--transition); z-index: 3; }
.mat-card:hover .mat-card-actions { opacity: 1; }
.mat-card-action-btn { width: 26px; height: 26px; border-radius: 6px; background: rgba(0,0,0,0.55); backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.08); color: #ccc; cursor: pointer; font-size: 0.7rem; display: flex; align-items: center; justify-content: center; transition: all var(--transition); }
.mat-card-action-btn:hover { background: rgba(0,0,0,0.75); color: #fff; border-color: rgba(255,255,255,0.15); }
.mat-card-action-btn.download:hover { background: rgba(79,110,246,0.6); border-color: var(--color-primary); }
.mat-card-action-btn.fav { color: #6b6b8a; }
.mat-card-action-btn.fav.active { color: #f59e0b; background: rgba(245,158,11,0.2); border-color: rgba(245,158,11,0.3); }
.mat-card-action-btn.tag:hover { background: rgba(168,85,247,0.5); border-color: var(--color-accent); }
.mat-card-action-btn.cat:hover { background: rgba(34,197,94,0.5); border-color: #4ade80; }
.mat-card-action-btn.delete:hover { background: rgba(239,68,68,0.6); border-color: #ef4444; }

/* 更换分类弹窗 */
.mat-cat-change-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(3px); z-index: 800; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.2s; }
.mat-cat-change-overlay.show { opacity: 1; visibility: visible; }
.mat-cat-change-dialog { background: #15152a; border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 18px; width: 300px; max-width: 92vw; box-shadow: 0 12px 40px rgba(0,0,0,0.55); }
.mat-cat-change-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 14px; }
.mat-cat-change-grid { display: flex; flex-direction: column; gap: 4px; }
.mat-cat-change-opt { padding: 10px 14px; border-radius: 7px; font-size: 0.84rem; color: #a0a0c0; cursor: pointer; transition: all var(--transition); border: 1px solid transparent; background: transparent; font-family: var(--font-family); text-align: left; width: 100%; }
.mat-cat-change-opt:hover { background: rgba(255,255,255,0.03); color: #fff; }
.mat-cat-change-opt.active { border-color: var(--color-primary); background: rgba(79,110,246,0.08); color: var(--color-primary-light); }
.mat-cat-change-actions { display: flex; gap: 8px; margin-top: 14px; justify-content: flex-end; }
.mat-cat-change-actions button { padding: 6px 16px; border-radius: 6px; font-size: 0.8rem; cursor: pointer; font-family: var(--font-family); border: none; }

/* 换标签弹窗 */
.mat-tag-change-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(3px); z-index: 800; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.2s; }
.mat-tag-change-overlay.show { opacity: 1; visibility: visible; }
.mat-tag-change-dialog { background: #15152a; border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 18px; width: 360px; max-width: 92vw; box-shadow: 0 12px 40px rgba(0,0,0,0.55); }
.mat-tag-change-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 12px; }
.mat-tag-change-actions { display: flex; gap: 8px; margin-top: 14px; justify-content: flex-end; }
.mat-tag-change-actions button { padding: 6px 16px; border-radius: 6px; font-size: 0.8rem; cursor: pointer; font-family: var(--font-family); border: none; }

/* 空状态 */
.mat-empty { grid-column: 1 / -1; text-align: center; padding: 80px 20px; color: var(--text-muted); }
.mat-empty-icon { font-size: 3.5rem; margin-bottom: 16px; opacity: 0.4; }
.mat-empty-text { font-size: 1rem; margin-bottom: 6px; }
.mat-empty-hint { font-size: 0.82rem; opacity: 0.6; }

/* ============================================
   上传弹窗
   ============================================ */
.mat-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(6px); z-index: 900; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.25s; }
.mat-modal-overlay.show { opacity: 1; visibility: visible; }

.mat-modal { background: #15152a; border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-xl); width: 720px; max-width: 95vw; max-height: 85vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.6); }

.mat-modal-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.mat-modal-title { font-size: 1.05rem; font-weight: 600; }
.mat-modal-close { width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,0.04); border: none; color: #6b6b8a; cursor: pointer; font-size: 0.9rem; transition: all var(--transition); }
.mat-modal-close:hover { background: rgba(255,255,255,0.08); color: #fff; }

.mat-modal-body { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 22px; }

/* 上传区 */
.mat-upload-zone { border: 2px dashed rgba(255,255,255,0.1); border-radius: var(--radius-lg); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 30px; cursor: pointer; transition: all var(--transition); gap: 12px; min-height: 260px; text-align: center; }
.mat-upload-zone:hover { border-color: rgba(79,110,246,0.4); background: rgba(79,110,246,0.03); }
.mat-upload-zone.dragover { border-color: var(--color-primary); background: rgba(79,110,246,0.06); box-shadow: 0 0 30px rgba(79,110,246,0.1); }
.mat-upload-zone-icon { font-size: 2.5rem; }
.mat-upload-zone-text { font-size: 0.9rem; color: var(--text-secondary); }
.mat-upload-zone-hint { font-size: 0.76rem; color: var(--text-muted); }
.mat-upload-preview { display: none; width: 100%; }
.mat-upload-preview.show { display: block; }
.mat-upload-preview img, .mat-upload-preview video { width: 100%; max-height: 200px; object-fit: contain; border-radius: 8px; }

/* 批量预览网格 */
.mat-batch-preview { display: none; width: 100%; }
.mat-batch-preview.show { display: block; }
.mat-batch-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; max-height: 260px; overflow-y: auto; }
.mat-batch-item { aspect-ratio: 1; border-radius: 8px; overflow: hidden; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.05); position: relative; }
.mat-batch-item img, .mat-batch-item video { width: 100%; height: 100%; object-fit: cover; }
.mat-batch-item .batch-audio { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; gap: 4px; font-size: 0.65rem; color: #6b6b8a; }
.mat-batch-item .batch-audio span:first-child { font-size: 1.5rem; }
.mat-batch-count { font-size: 0.78rem; color: var(--color-primary-light); text-align: center; margin-top: 8px; }
.mat-batch-types { display: flex; gap: 6px; justify-content: center; margin-top: 4px; }
.mat-batch-type-tag { padding: 2px 8px; border-radius: 10px; font-size: 0.68rem; background: rgba(255,255,255,0.04); color: #6b6b8a; }

/* 上传方式选择 */
.mat-upload-methods { display: flex; gap: 8px; margin-top: 10px; }
.mat-upload-method-btn { flex: 1; padding: 8px; text-align: center; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.06); border-radius: 8px; color: #6b6b8a; font-size: 0.76rem; cursor: pointer; transition: all var(--transition); font-family: var(--font-family); display: flex; align-items: center; justify-content: center; gap: 4px; }
.mat-upload-method-btn:hover { border-color: rgba(79,110,246,0.3); color: #a0a0c0; background: rgba(79,110,246,0.03); }

/* 上传进度条 */
.mat-upload-progress { display: none; margin-top: 10px; }
.mat-upload-progress.show { display: block; }
.mat-progress-bar-wrap { height: 4px; background: rgba(255,255,255,0.05); border-radius: 2px; overflow: hidden; margin-top: 6px; }
.mat-progress-bar-fill { height: 100%; background: var(--gradient-primary); border-radius: 2px; transition: width 0.3s ease; }

/* 表单区 */
.mat-form { display: flex; flex-direction: column; gap: 14px; }
.mat-form-group { display: flex; flex-direction: column; gap: 5px; }
.mat-form-label { font-size: 0.8rem; color: var(--text-muted); }
.mat-form-input, .mat-form-select, .mat-form-textarea { padding: 10px 14px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 8px; color: #fff; font-family: var(--font-family); font-size: 0.86rem; outline: none; transition: border-color var(--transition); }
.mat-form-input:focus, .mat-form-select:focus, .mat-form-textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(79,110,246,0.06); }
.mat-form-textarea { resize: vertical; min-height: 70px; }
.mat-form-select option { background: #15152a; color: #fff; }

/* 标签多选 */
.mat-tags-select { display: flex; flex-wrap: wrap; gap: 6px; }
.mat-tags-select .mat-tag-chip { padding: 5px 12px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); border-radius: var(--radius-full); font-size: 0.76rem; color: var(--text-secondary); cursor: pointer; transition: all var(--transition); font-family: var(--font-family); }
.mat-tags-select .mat-tag-chip:hover { border-color: rgba(79,110,246,0.3); }
.mat-tags-select .mat-tag-chip.selected { background: rgba(79,110,246,0.15); border-color: var(--color-primary); color: var(--color-primary-light); }

.mat-modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 22px; border-top: 1px solid rgba(255,255,255,0.06); }
.mat-btn-cancel { padding: 9px 22px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: 8px; color: var(--text-secondary); cursor: pointer; font-size: 0.85rem; font-family: var(--font-family); }
.mat-btn-cancel:hover { background: rgba(255,255,255,0.06); color: #fff; }
.mat-btn-upload { padding: 9px 28px; background: var(--gradient-primary); border: none; border-radius: 8px; color: #fff; font-weight: 600; cursor: pointer; font-size: 0.85rem; font-family: var(--font-family); transition: all var(--transition); }
.mat-btn-upload:hover { box-shadow: 0 4px 16px rgba(79,110,246,0.35); }
.mat-btn-upload:disabled { opacity: 0.4; cursor: not-allowed; }

/* ============================================
   创建标签弹窗
   ============================================ */
.mat-tag-create-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); z-index: 800; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.2s; }
.mat-tag-create-overlay.show { opacity: 1; visibility: visible; }
.mat-tag-create-dialog { background: #15152a; border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-lg); padding: 24px; width: 400px; max-width: 92vw; box-shadow: 0 16px 48px rgba(0,0,0,0.6); }
.mat-tag-create-title { font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
.mat-tag-create-input { width: 100%; padding: 10px 14px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 8px; color: #fff; font-size: 0.88rem; font-family: var(--font-family); outline: none; margin-bottom: 8px; }
.mat-tag-create-input:focus { border-color: var(--color-primary); }
.mat-tag-create-list { max-height: 200px; overflow-y: auto; margin-bottom: 12px; }
.mat-tag-create-item { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px; border-radius: 6px; font-size: 0.82rem; color: var(--text-secondary); transition: all var(--transition); }
.mat-tag-create-item:hover { background: rgba(255,255,255,0.02); }
.mat-tag-delete-btn { width: 24px; height: 24px; border-radius: 4px; background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.7rem; transition: all var(--transition); }
.mat-tag-delete-btn:hover { background: rgba(239,68,68,0.1); color: #ef4444; }
.mat-tag-create-actions { display: flex; justify-content: flex-end; gap: 8px; }
.mat-tag-create-actions button { padding: 7px 18px; border-radius: 6px; font-size: 0.82rem; cursor: pointer; font-family: var(--font-family); border: none; }

/* 响应式 */
@media (max-width: 1024px) { .mat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .mat-grid { grid-template-columns: repeat(2, 1fr); } .mat-modal-body { grid-template-columns: 1fr; } .mat-search-input { width: 140px; } .mat-search-input:focus { width: 170px; } }
@media (max-width: 480px) { .mat-grid { grid-template-columns: 1fr; } }