.viewer-main {
  max-width: 100%;
  width: 100%;
  padding: 0 1rem;
}

.viewer-main h1 {
  margin-bottom: 0.25rem;
}

.viewer-main .hint {
  color: #666;
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

.drop-zone {
  border: 2px dashed #d2d2d7;
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  background: white;
}

.drop-zone.dragover {
  border-color: #0071e3;
  background: rgba(0, 113, 227, 0.06);
}

.file-label {
  background: #0071e3;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
}

.drop-zone input[type="file"] {
  display: none;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0;
}

#search {
  flex: 1;
  max-width: 320px;
  padding: 0.5rem;
  border: 1px solid #d2d2d7;
  border-radius: 8px;
  font-size: 0.9rem;
}

#row-count {
  color: #666;
  font-size: 0.85rem;
  white-space: nowrap;
}

#download-btn {
  margin-left: auto;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 8px;
  background: #0071e3;
  color: white;
  font-size: 0.85rem;
  cursor: pointer;
}

#download-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

#table-wrap {
  overflow: auto;
  max-height: 70vh;
  border: 1px solid #e5e5e7;
  border-radius: 8px;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.85rem;
}

th, td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid #e5e5e7;
  text-align: left;
  white-space: nowrap;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
}

th {
  position: sticky;
  top: 0;
  background: #f5f5f7;
  z-index: 1;
  white-space: nowrap;
}

th span {
  margin-right: 0.4rem;
}

.col-close {
  border: none;
  background: none;
  color: #999;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  padding: 0 0.2rem;
}

.col-close:hover {
  color: #d70015;
}

tr:hover td {
  background: #f5f5f7;
}

.link {
  display: inline-block;
  margin-top: 1rem;
  color: #666;
  font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  .viewer-main .hint { color: #a1a1a6; }
  .drop-zone { background: #2c2c2e; border-color: #48484a; }
  #search { background: #1c1c1e; color: #f5f5f7; border-color: #48484a; }
  #row-count { color: #a1a1a6; }
  #table-wrap { border-color: #38383a; }
  th, td { border-color: #38383a; }
  th { background: #2c2c2e; }
  tr:hover td { background: #2c2c2e; }
  .link { color: #a1a1a6; }
  .col-close { color: #6e6e73; }
  .col-close:hover { color: #ff6961; }
}