:root {
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f5f7fb;
  color: #1f2430;
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 40px;
  display: grid;
  gap: 20px;
}

header h1 {
  margin-bottom: 8px;
}

header p {
  margin: 0;
  color: #4a5568;
}

.sync-status {
  margin-top: 8px;
  font-size: 14px;
}

section {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 8px 20px rgba(39, 57, 85, 0.08);
}

.import-panel {
  display: grid;
  gap: 10px;
}

.hint {
  color: #4a5568;
  margin-top: 0;
}

label {
  font-weight: 600;
}

select,
textarea,
button {
  font: inherit;
}

select,
textarea {
  width: 100%;
  border: 1px solid #d6dbe7;
  border-radius: 10px;
  padding: 10px 12px;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

button {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 0.1s ease, opacity 0.2s ease;
}

button:active {
  transform: translateY(1px);
}

button:hover {
  opacity: 0.9;
}

.actions-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.primary {
  background: #2563eb;
  color: #fff;
}

.danger {
  background: #e53e3e;
  color: #fff;
}

.tabs {
  display: flex;
  gap: 8px;
}

.tab {
  background: #edf2f7;
  color: #334155;
}

.tab.active {
  background: #2563eb;
  color: #fff;
}

.list-toolbar {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

#listSummary {
  margin: 0;
  color: #4a5568;
}

.card-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.card-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.card-text {
  overflow-wrap: anywhere;
}

.copy-btn {
  background: #0ea5e9;
  color: #fff;
  min-width: 72px;
}

.copy-btn.copied {
  background: #16a34a;
}

.empty {
  color: #64748b;
  padding: 10px 0;
}