.reading-page {
  max-width: 760px;
}

.reading-header {
  align-items: flex-start;
}

.reading-header-copy {
  min-width: 0;
  flex: 1;
}

.reading-header-copy .page-title {
  margin-bottom: 5px;
}

.reading-header-copy p {
  color: var(--ink-muted);
  font-size: 12px;
  line-height: 1.55;
}

.reading-toolbar,
.reading-panel,
.reading-task-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 2px 12px var(--shadow);
}

.reading-toolbar {
  display: flex;
  align-items: end;
  gap: 12px;
  padding: 15px;
  margin-bottom: 16px;
}

.reading-field {
  min-width: 0;
  flex: 1;
}

.reading-field label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-muted);
  font-size: 12px;
}

.reading-input,
.reading-select {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  background: #fff;
  color: var(--ink-dark);
  font: inherit;
  font-size: 14px;
}

.reading-input:focus,
.reading-select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.15);
}

.reading-btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--ink-dark);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
}

.reading-btn.primary {
  border-color: #28685d;
  background: #28685d;
  color: #fff;
}

.reading-btn.vermillion {
  border-color: var(--vermillion);
  background: var(--vermillion);
  color: #fff;
}

.reading-btn.danger {
  border-color: #f1c7ca;
  color: var(--vermillion);
}

.reading-btn:disabled {
  cursor: wait;
  opacity: 0.55;
}

.reading-task-list {
  display: grid;
  gap: 12px;
}

.reading-task-card {
  padding: 16px;
  cursor: pointer;
  transition:
    border-color 0.2s,
    transform 0.2s;
}

.reading-task-card:active {
  transform: scale(0.99);
}

.reading-task-card.active {
  border-color: #28685d;
  box-shadow: 0 0 0 2px rgba(40, 104, 93, 0.1);
}

.task-card-head,
.reading-section-head,
.asset-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.task-scope {
  display: inline-flex;
  align-items: center;
  padding: 4px 9px;
  border-radius: 999px;
  background: #eaf3f0;
  color: #28685d;
  font-size: 11px;
  font-weight: 700;
}

.task-count {
  color: var(--ink-muted);
  font-size: 12px;
}

.task-org {
  margin-top: 11px;
  font-family: 'STSong', 'SimSun', 'Noto Serif SC', serif;
  font-size: 18px;
  font-weight: 600;
}

.task-path,
.task-meta {
  margin-top: 5px;
  color: var(--ink-muted);
  font-size: 12px;
  line-height: 1.5;
}

.reading-panel {
  padding: 18px;
  margin-top: 16px;
}

.reading-section-head {
  margin-bottom: 15px;
}

.reading-section-title {
  font-family: 'STSong', 'SimSun', 'Noto Serif SC', serif;
  font-size: 17px;
  font-weight: 600;
}

.reading-section-note {
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 12px;
  line-height: 1.55;
}

.assignment-strip {
  display: flex;
  overflow-x: auto;
  gap: 8px;
  padding-bottom: 5px;
  margin-bottom: 15px;
  scrollbar-width: thin;
}

.assignment-chip {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fbfaf8;
  color: var(--ink-light);
  font-size: 12px;
}

.assignment-chip strong {
  color: var(--ink-dark);
}

.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11px;
}

.upload-file {
  position: relative;
  overflow: hidden;
}

.upload-file input {
  position: absolute;
  inset: 0;
  cursor: pointer;
  opacity: 0;
}

.upload-help {
  padding: 11px 12px;
  margin-top: 12px;
  border-radius: var(--radius-sm);
  background: var(--gold-light);
  color: #765432;
  font-size: 12px;
  line-height: 1.55;
}

.asset-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.asset-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: #fff;
}

.asset-thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #eeeae4;
}

.asset-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.asset-kind {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 4px 7px;
  border-radius: 999px;
  background: rgba(30, 37, 35, 0.78);
  color: #fff;
  font-size: 10px;
}

.asset-card-body {
  padding: 10px;
}

.asset-card-title {
  overflow: hidden;
  font-size: 13px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.asset-card-subtitle {
  overflow: hidden;
  margin-top: 3px;
  color: var(--ink-muted);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.asset-card-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.asset-delete {
  padding: 4px 7px;
  border: 0;
  background: transparent;
  color: var(--vermillion);
  cursor: pointer;
  font-size: 11px;
}

.reading-empty {
  padding: 34px 18px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--ink-muted);
  text-align: center;
  font-size: 13px;
  line-height: 1.7;
}

@media (max-width: 520px) {
  .reading-toolbar {
    align-items: stretch;
  }

  .upload-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 390px) {
  .reading-page {
    padding-inline: 12px;
  }

  .reading-toolbar {
    flex-direction: column;
  }

  .asset-grid {
    grid-template-columns: 1fr;
  }
}