:root {
  --bg: #0b0f14;
  --card: #121720;
  --text: #e6edf3;
  --muted: #9aa7b2;
  --primary: #3b82f6;
  --primary-700: #2563eb;
  --border: #1f2937;
  --ok: #22c55e;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-header {
  padding: 16px 16px 6px;
  border-bottom: 1px solid var(--border);
}
.app-header h1 { margin: 0; font-size: 18px; }
.header-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.header-actions { position: relative; display: flex; align-items: center; gap: 8px; }
.subtitle { margin: 6px 0 0; color: var(--muted); font-size: 12px; }

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 12px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
}
.card h2 {
  margin: 0 0 8px;
  font-size: 16px;
}
.card h3 { margin: 0 0 8px; font-size: 16px; }
.hidden { display: none; }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.field .field-label { color: var(--muted); font-size: 13px; }
.field select,
.field textarea {
  background: #0d1219;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 8px 10px;
  font-size: 13px;
}
.field.full textarea { width: 100%; }

.modes { display: flex; gap: 8px; flex-wrap: wrap; }
.mode-item { display: inline-flex; align-items: center; gap: 6px; padding: 6px 8px; background: #0d1219; border: 1px solid var(--border); border-radius: 999px; }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.grid .full { grid-column: 1 / -1; }

/* 控件栏（标题｜模式｜操作） */
.controls-bar {
  display: grid;
  grid-template-columns: 2.5fr 1fr auto;
  gap: 8px;
  align-items: end;
  margin: 8px 0;
}
.field.compact .field-label { font-size: 12px; color: var(--muted); }
.field.compact select { width: 100%; }
.field.compact.short select { min-width: 160px; }
.actions.inline { display: flex; gap: 8px; justify-content: flex-end; margin: 0; }

/* 语言一排布局 */
.lang-row { display: flex; align-items: center; gap: 12px; }
.lang-row .field-label { min-width: 80px; }
.lang-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.actions { display: flex; gap: 8px; justify-content: flex-end; margin: 8px 0; }
.primary {
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 8px 14px;
  font-weight: 600;
  cursor: pointer;
}
.primary:hover { background: var(--primary-700); }
.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
}

.output { margin-top: 8px; }
.output-box {
  margin: 0;
  background: #0a0f15;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  min-height: 120px;
  overflow: auto;
}

.uploader { display: flex; flex-direction: column; gap: 10px; }
.file-list { list-style: none; margin: 0; padding: 0; }
.file-list li { padding: 6px 8px; border: 1px dashed var(--border); border-radius: 8px; margin-bottom: 6px; font-size: 13px; color: var(--muted); }

.help { margin: 6px 0 12px; color: var(--muted); font-size: 13px; }

.app-footer { padding: 16px 20px; color: var(--muted); border-top: 1px solid var(--border); }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .actions { justify-content: stretch; }
  .controls-bar { grid-template-columns: 1fr; }
  .actions.inline { justify-content: flex-start; }
}

/* 知识库生成模块 */
.two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.list { margin: 0; padding-left: 18px; }
.list li { margin-bottom: 8px; line-height: 1.45; }
.list .pair { padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; background: #0d1219; }
.list .lang {
  display: block;
  white-space: pre-wrap;
}
.list .lang-es { color: var(--text); }
.list .lang-zh { color: var(--muted); margin-top: 4px; }
.list .lang-current { color: var(--text); }

/* 每条目复制按钮 */
.pair { position: relative; }
.pair .copy-item {
  position: absolute;
  right: 8px;
  top: 8px;
  padding: 3px 6px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(13,18,25,0.92);
  color: var(--text);
  cursor: pointer;
  z-index: 50;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.pair .copy-item:hover { color: var(--text); border-color: var(--primary); }

@media (max-width: 800px) {
  .two-col { grid-template-columns: 1fr; }
}
.side-actions {
  position: fixed;
  right: 16px;
  top: 40%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
}
.side-actions .ghost {
  padding: 6px 10px;
  border-radius: 999px;
}

/* 侧边图标按钮样式 */
.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
}

/* 复制成功提示气泡 */
.toast {
  position: fixed;
  top: 16px;
  right: 20px;
  padding: 10px 12px;
  background: #0d1219;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  z-index: 2000;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .18s ease, transform .18s ease;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.lang-chips { display: flex; gap: 6px; flex-wrap: nowrap; overflow-x: auto; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #0d1219;
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}
.chip.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary) inset;
}
.chip.lock { user-select: none; }
.popover {
  position: absolute;
  right: 0;
  top: 40px;
  min-width: 220px;
  padding: 10px;
  background: #0d1219;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  z-index: 1500;
  display: none;
}
.popover.open { display: block; }
.popover-title { color: var(--muted); font-size: 12px; margin-bottom: 8px; }