/* static/css/materials.css — 素材仓库 */

/* Shell */
.materials-shell {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
  flex: 1;
}

/* Toolbar */
.materials-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.materials-search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
  max-width: 520px;
}
.materials-search-box svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}
.materials-search-box input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.materials-search-box input:focus {
  border-color: var(--neon);
  box-shadow: 0 0 0 3px var(--neon-dim);
}
.materials-filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}
.materials-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s ease;
}
.materials-filter-btn:hover,
.materials-filter-btn[data-active="true"] {
  color: var(--text);
  border-color: rgba(74,222,128,0.45);
  background: var(--surface-hover);
}
.materials-filter-btn svg { width: 16px; height: 16px; }
.materials-filter-badge {
  display: none;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--neon);
  color: #04210f;
  font-size: 11px;
  font-weight: 800;
  line-height: 18px;
  text-align: center;
}
.materials-filter-badge.show { display: inline-block; }

/* Filter panel */
.materials-filter-panel {
  padding: 16px;
  animation: scaleIn .3s cubic-bezier(0.16,1,0.3,1) both;
}
.materials-filter-panel[hidden] { display: none; }
.materials-filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px 20px;
}
.materials-filter-group label {
  display: block;
  font-size: 11px;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.materials-filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.materials-chip {
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s ease;
}
.materials-chip:hover { border-color: var(--border-strong); color: var(--text); }
.materials-chip.active {
  background: rgba(74,222,128,0.14);
  border-color: rgba(74,222,128,0.45);
  color: var(--neon-bright);
}
.materials-select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  outline: none;
}
.materials-select:focus { border-color: var(--neon); }
.materials-range-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.materials-range-row input {
  width: 70px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  outline: none;
}
.materials-range-row input:focus { border-color: var(--neon); }
.materials-range-row span { color: var(--text-muted); }
.materials-filter-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* Bulk action bar */
.materials-bulk-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  animation: slideIn .25s cubic-bezier(0.16,1,0.3,1) both;
}
.materials-bulk-bar[hidden] { display: none; }
.materials-bulk-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}
.materials-bulk-check {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: var(--neon);
  display: grid;
  place-items: center;
}
.materials-bulk-check::after {
  content: '';
  width: 5px;
  height: 9px;
  border-right: 2px solid #04210f;
  border-bottom: 2px solid #04210f;
  transform: rotate(45deg) translate(-1px, -1px);
}
.materials-bulk-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.materials-bulk-actions .btn-ghost {
  padding: 7px 12px;
  font-size: 12px;
}
.materials-bulk-actions .btn-ghost svg { width: 14px; height: 14px; }
.materials-bulk-close {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all .2s ease;
}
.materials-bulk-close:hover { background: var(--surface-hover); color: var(--text); }
.materials-bulk-close svg { width: 14px; height: 14px; }

/* Content */
.materials-content {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
}

/* Grid view */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  padding-bottom: 20px;
}
.materials-grid[hidden],
.materials-list[hidden],
.materials-large[hidden] { display: none; }

/* Card */
.material-card {
  position: relative;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: all .25s cubic-bezier(0.16,1,0.3,1);
  animation: scaleIn .4s cubic-bezier(0.16,1,0.3,1) both;
}
.material-card:hover {
  transform: translateY(-3px);
  border-color: rgba(74,222,128,0.35);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(74,222,128,0.1);
}
.material-card.selected {
  border-color: var(--neon);
  box-shadow: 0 0 0 2px var(--neon), 0 0 40px rgba(74,222,128,0.18);
}
.material-card .mat-select {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.6);
  background: rgba(0,0,0,0.35);
  display: grid;
  place-items: center;
  z-index: 4;
  cursor: pointer;
  transition: all .15s ease;
}
.material-card:hover .mat-select,
.material-card.selected .mat-select {
  border-color: var(--neon);
}
.material-card.selected .mat-select {
  background: var(--neon);
  border-color: var(--neon);
}
.material-card.selected .mat-select::after {
  content: '';
  width: 4px;
  height: 8px;
  border-right: 2px solid #04210f;
  border-bottom: 2px solid #04210f;
  transform: rotate(45deg) translate(-1px, -1px);
}
.material-card .mat-fav {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0,0,0,0.35);
  color: rgba(255,255,255,0.6);
  display: grid;
  place-items: center;
  z-index: 4;
  opacity: 0;
  transform: scale(0.8);
  transition: all .2s ease;
}
.material-card:hover .mat-fav,
.material-card.favorite .mat-fav {
  opacity: 1;
  transform: scale(1);
}
.material-card.favorite .mat-fav { color: #fbbf24; }
.material-card .mat-fav svg { width: 12px; height: 12px; fill: currentColor; stroke: none; }

.material-card .mat-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-elevated);
}
.material-card .mat-media img,
.material-card .mat-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.material-card:hover .mat-media img,
.material-card:hover .mat-media video { transform: scale(1.05); }
.material-card .mat-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: rgba(255,255,255,0.55);
}
.material-card .mat-placeholder svg { width: 44px; height: 44px; }
.material-card .mat-placeholder span { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.material-card .mat-type-pill {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  z-index: 3;
}
.material-card .mat-duration {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 3px 7px;
  border-radius: 5px;
  font-size: 10px;
  font-weight: 700;
  background: rgba(0,0,0,0.55);
  color: var(--text);
  z-index: 3;
}
.material-card .mat-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 2;
  opacity: 0;
  transition: opacity .2s ease;
}
.material-card:hover .mat-play { opacity: 1; }
.material-card .mat-play svg {
  width: 42px;
  height: 42px;
  color: #fff;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.5));
}

.material-card .mat-info {
  padding: 12px;
  border-top: 1px solid var(--border);
}
.material-card .mat-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
}
.material-card .mat-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
}
.material-card .mat-meta-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.material-card .mat-source {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
}
.material-card .mat-source.ai { color: #a78bfa; border-color: rgba(167,139,250,0.35); background: rgba(167,139,250,0.1); }
.material-card .mat-source.upload { color: #60a5fa; border-color: rgba(96,165,250,0.35); background: rgba(96,165,250,0.1); }
.material-card .mat-source.library { color: #f472b6; border-color: rgba(244,114,182,0.35); background: rgba(244,114,182,0.1); }

/* Waveform for audio */
.material-card .mat-waveform {
  width: 70%;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}
.material-card .mat-waveform i {
  width: 3px;
  border-radius: 999px;
  background: rgba(255,255,255,0.35);
  animation: audioWave 1.2s ease-in-out infinite alternate;
}
@keyframes audioWave { from { height: 20%; } to { height: 100%; } }

/* List view */
.materials-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 20px;
}
.material-list-row {
  display: grid;
  grid-template-columns: 40px 52px 1.4fr 0.9fr 0.7fr 0.7fr 0.6fr 0.5fr;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all .2s ease;
  animation: slideIn .3s cubic-bezier(0.16,1,0.3,1) both;
}
.material-list-row:hover { background: var(--surface-hover); border-color: rgba(74,222,128,0.25); }
.material-list-row.selected { border-color: var(--neon); box-shadow: 0 0 0 1px var(--neon); }
.material-list-row .mat-select {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 2px solid var(--border-strong);
  display: grid;
  place-items: center;
  transition: all .15s ease;
}
.material-list-row.selected .mat-select {
  background: var(--neon);
  border-color: var(--neon);
}
.material-list-row.selected .mat-select::after {
  content: '';
  width: 4px;
  height: 8px;
  border-right: 2px solid #04210f;
  border-bottom: 2px solid #04210f;
  transform: rotate(45deg) translate(-1px, -1px);
}
.material-list-row .mat-thumb {
  width: 48px;
  height: 36px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-elevated);
  display: grid;
  place-items: center;
}
.material-list-row .mat-thumb img,
.material-list-row .mat-thumb video { width: 100%; height: 100%; object-fit: cover; }
.material-list-row .mat-thumb svg { width: 20px; height: 20px; color: var(--text-muted); }
.material-list-row .mat-main { min-width: 0; }
.material-list-row .mat-name { font-size: 13px; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 4px; }
.material-list-row .mat-ai-status { margin: 2px 8px; font-size: 11px; }
.mat-ai-status.nvt { color: var(--text-muted); }
.mat-ai-status.err { color: #f87171; }
.mat-ai-status.skip { color: var(--text-dim); }
.mat-ai-caption {
  margin: 4px 0 2px;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  white-space: normal;
  word-break: break-all;
}
.mat-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.material-list-row .mat-tag {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(74,222,128,0.08);
  border: 1px solid rgba(74,222,128,0.18);
  color: var(--neon-bright);
}
.material-list-row .mat-cell { font-size: 12px; color: var(--text-dim); }
.material-list-row .mat-cell.muted { color: var(--text-muted); }

/* Large view */
.materials-large {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-bottom: 20px;
}
.material-large-card {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr);
  gap: 0;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: all .25s ease;
  animation: scaleIn .45s cubic-bezier(0.16,1,0.3,1) both;
}
.material-large-card:hover { border-color: rgba(74,222,128,0.3); }
.material-large-card.selected { border-color: var(--neon); box-shadow: 0 0 0 1px var(--neon); }
.material-large-card .mat-media { aspect-ratio: 16 / 9; border-right: 1px solid var(--border); }
.material-large-card .mat-info { padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.material-large-card .mat-name { font-size: 16px; margin-bottom: 4px; }
.material-large-card .mat-desc { font-size: 12px; color: var(--text-muted); line-height: 1.6; }
.material-large-card .mat-meta-large {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.material-large-card .mat-meta-item { display: flex; justify-content: space-between; font-size: 12px; }
.material-large-card .mat-meta-item span:first-child { color: var(--text-muted); }
.material-large-card .mat-meta-item span:last-child { color: var(--text); font-weight: 600; }

/* Hover preview */
/* Context menu */
.materials-ctx-menu {
  position: fixed;
  z-index: 90;
  min-width: 180px;
  padding: 6px;
  border-radius: 12px;
  animation: scaleIn .15s ease;
}
.materials-ctx-menu[hidden] { display: none; }
.materials-ctx-group + .materials-ctx-group {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}
.materials-ctx-menu button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s ease;
}
.materials-ctx-menu button:hover { background: var(--surface-hover); color: var(--text); }
.materials-ctx-menu button.danger { color: #f87171; }
.materials-ctx-menu button.danger:hover { background: rgba(239,68,68,0.12); }
.materials-ctx-menu button svg { width: 15px; height: 15px; }

/* Empty state */
.materials-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-muted);
  text-align: center;
  padding: 60px 20px;
}
.materials-empty[hidden] { display: none; }
.materials-empty svg { width: 48px; height: 48px; opacity: .6; }
.materials-empty p { margin: 0; font-size: 15px; font-weight: 700; color: var(--text-dim); }
.materials-empty span { font-size: 12px; }

/* Detail sheet inside right panel */
.material-detail-sheet {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.material-detail-preview {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  min-height: 160px;
  max-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  aspect-ratio: auto;
}
.material-detail-preview img,
.material-detail-preview video {
  max-width: 100%;
  max-height: 360px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}
/* 视频播放器容器/元素：按素材原始比例显示，限制最大宽高 */
.material-detail-preview .cr-video-body {
  width: auto !important;
  height: auto !important;
  max-width: 100%;
  max-height: 360px;
  aspect-ratio: auto;
}
.material-detail-preview .cr-video-el {
  width: auto !important;
  height: auto !important;
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
}
.material-detail-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
}
.material-detail-placeholder svg { width: 56px; height: 56px; }
.material-detail-name {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 6px 8px;
  width: 100%;
  outline: none;
  transition: all .2s ease;
}
.material-detail-name:hover,
.material-detail-name:focus {
  background: var(--surface);
  border-color: var(--border);
}
.material-detail-section {
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 14px;
  padding: 14px;
}
html[data-theme="light"] .material-detail-section {
  background: rgba(255,255,255,0.55);
  border-color: rgba(0,0,0,0.06);
}
.material-detail-section h4 {
  margin: 0 0 12px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.material-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.material-detail-row:last-child { border-bottom: none; }
.material-detail-row span:first-child { color: var(--text-muted); }
.material-detail-row span:last-child { color: var(--text); font-weight: 600; }
.material-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.material-detail-tags input {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  outline: none;
}
.material-detail-tags input:focus { border-color: var(--neon); }
.material-detail-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.25);
  color: var(--neon-bright);
}
.material-detail-tag button {
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
  padding: 0;
}

/* AI 识别：关键字标签（管理员可编辑）+ 画面描述 */
.material-detail-ai-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.mat-detail-ai-tag {
  /* 组件库 Chip 风格：胶囊 + 绿色主题 */
  gap: 4px;
  border-radius: 999px;
  font-weight: 600;
  color: #4ade80;
  border-color: rgba(74,222,128,0.35);
  background: rgba(74,222,128,0.10);
  cursor: default;
}
.mat-detail-ai-tag.editable { cursor: text; }
.mat-detail-ai-tag-x {
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  padding: 0 4px;
  opacity: 0;
  transition: opacity 0.15s;
}
.mat-detail-ai-tag:hover .mat-detail-ai-tag-x { opacity: 0.75; }
.mat-detail-ai-tag-x:hover { opacity: 1; color: #f87171; }
.mat-detail-ai-hint { font-style: normal; font-size: 11px; font-weight: 500; color: var(--text-muted); margin-left: 8px; }
.mat-detail-ai-add-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px dashed rgba(74,222,128,0.45);
  background: rgba(74,222,128,0.08);
  color: var(--neon-bright);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
.mat-detail-ai-add-btn:hover { background: rgba(74,222,128,0.2); border-color: var(--neon); }
.mat-detail-ai-tag-edit {
  display: inline-flex;
  align-items: center;
  min-width: 90px;
  max-width: 180px;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--neon);
  background: var(--surface);
  color: var(--text);
  font-size: 11px;
  font-weight: 600;
  outline: none;
}
.mat-detail-ai-empty { font-size: 12px; color: var(--text-muted); }
.mat-detail-ai-status { font-style: normal; font-size: 11px; font-weight: 600; color: var(--text-muted); margin-left: 6px; }
.material-detail-ai-caption {
  width: 100%;
  min-height: 64px;
  margin-top: 4px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  line-height: 1.6;
  outline: none;
  resize: vertical;
  box-sizing: border-box;
  font-family: inherit;
}
.material-detail-ai-caption:focus { border-color: var(--neon); }
.material-detail-ai-caption-readonly {
  margin: 4px 0 0;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
}

.material-detail-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.material-detail-actions .btn-neon,
.material-detail-actions .btn-ghost { justify-content: center; padding: 10px 12px; font-size: 13px; }
.material-detail-related {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.material-detail-related-item {
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: all .2s ease;
}
.material-detail-related-item:hover { border-color: rgba(74,222,128,0.35); }
.material-detail-related-item img,
.material-detail-related-item video { width: 100%; height: 100%; object-fit: cover; }
.material-detail-related-item .rel-name {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 8px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Responsive */
@media (max-width: 1100px) {
  .materials-filter-grid { grid-template-columns: repeat(2, 1fr); }
  .material-large-card { grid-template-columns: 1fr; }
  .material-large-card .mat-media { border-right: none; border-bottom: 1px solid var(--border); }
}
@media (max-width: 860px) {
  .materials-toolbar { flex-direction: column; align-items: stretch; }
  .materials-search-box { max-width: none; }
  .materials-filter-bar { justify-content: space-between; }
  .materials-filter-grid { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .material-list-row { grid-template-columns: 36px 44px 1fr auto; }
  .material-list-row .mat-cell { display: none; }
  .materials-bulk-actions { flex-wrap: wrap; justify-content: flex-end; }
}
@media (max-width: 560px) {
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
}