/* ============ 主题变量 ============ */
:root {
  --bg: #f4f6fa;
  --panel-bg: #ffffff;
  --text: #1f2937;
  --text-dim: #6b7280;
  --border: #e5e7eb;
  --accent: #4f6ef7;
  --accent-hover: #3b57d9;
  --accent-soft: rgba(79, 110, 247, 0.1);
  --danger: #dc2626;
  --warn-bg: #fef3c7;
  --highlight: rgba(79, 110, 247, 0.18);
  --shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
  --radius: 14px;
}
[data-theme="dark"] {
  --bg: #0f172a;
  --panel-bg: #1e293b;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --border: #334155;
  --accent: #6d86ff;
  --accent-hover: #8ba0ff;
  --accent-soft: rgba(109, 134, 255, 0.15);
  --danger: #f87171;
  --warn-bg: #453a15;
  --highlight: rgba(109, 134, 255, 0.3);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
  padding: 0 0 60px;
}

/* ============ 顶栏 ============ */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
  box-shadow: var(--shadow);
}
.app-title { font-size: 1.25rem; font-weight: 700; letter-spacing: 0.5px;
  background: linear-gradient(120deg, var(--accent), #9b5cf6);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.topbar-actions { display: flex; gap: 10px; align-items: center; }

.seg { display: flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.seg-btn {
  border: none; background: transparent; color: var(--text-dim);
  padding: 7px 16px; cursor: pointer; font-size: 0.85rem; transition: all 0.25s;
}
.seg-btn.active { background: var(--accent); color: #fff; }
.icon-btn {
  border: 1px solid var(--border); background: var(--panel-bg); color: var(--text);
  width: 36px; height: 36px; border-radius: 50%; cursor: pointer; font-size: 0.9rem;
  transition: transform 0.2s;
}
.icon-btn:hover { transform: scale(1.08); }

/* ============ 面板 ============ */
.panel {
  background: var(--panel-bg);
  margin: 18px auto 0;
  max-width: 1840px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 20px 24px;
}
.panel h2 { font-size: 1rem; margin-bottom: 14px; color: var(--text); }
.hint { font-size: 0.82rem; color: var(--text-dim); margin-top: 10px; }
.hidden { display: none !important; }

/* ============ 文件加载 ============ */
.file-row { display: flex; gap: 24px; flex-wrap: wrap; }
.file-field { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; flex: 1; min-width: 280px; }
.field-label { color: var(--text); }
.file-name { font-size: 0.8rem; color: var(--text-dim); font-style: italic; }
.visually-hidden { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

/* ============ 控制区 ============ */
.control-grid { display: flex; gap: 18px; flex-wrap: wrap; }
.ctrl-group {
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px;
  display: flex; flex-direction: column; gap: 8px; min-width: 210px;
}
.ctrl-group legend { font-size: 0.8rem; color: var(--text-dim); padding: 0 6px; }
.ctrl-group label { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; }
.ctrl-group label span { min-width: 64px; color: var(--text-dim); }
.ctrl-group input[type="date"], .ctrl-group input[type="number"], .ctrl-group select {
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
  background: var(--bg); color: var(--text); font-size: 0.85rem;
}
.radio { cursor: pointer; }
.radio span { min-width: auto !important; color: var(--text) !important; }
/* 阶段模式：每行两个选项 */
.mode-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; align-items: center; }
.twostage-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }

.primary-btn {
  margin-top: 16px; border: none; border-radius: 10px; padding: 10px 28px;
  background: var(--accent); color: #fff; font-size: 0.9rem; cursor: pointer;
  transition: background 0.25s, transform 0.15s;
}
.primary-btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
.ghost-btn {
  border: 1px solid var(--border); background: transparent; color: var(--text);
  border-radius: 8px; padding: 6px 14px; font-size: 0.82rem; cursor: pointer;
  transition: background 0.2s;
}
.ghost-btn:hover { background: var(--accent-soft); }

/* ============ 过滤区 ============ */
.collapsible { cursor: pointer; display: flex; justify-content: space-between; align-items: center; user-select: none; }
.panel.collapsed .collapse-body { display: none; }
.panel.collapsed .arrow { transform: rotate(-90deg); display: inline-block; }
.filter-flags { display: flex; gap: 24px; flex-wrap: wrap; margin-bottom: 14px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; cursor: pointer; }
.filter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 10px 20px; margin-bottom: 12px; }
.filter-row { display: flex; align-items: center; gap: 6px; font-size: 0.82rem; }
.filter-row .fname { min-width: 96px; color: var(--text-dim); }
.filter-row input {
  width: 76px; border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 6px; background: var(--bg); color: var(--text); font-size: 0.8rem;
}

/* ============ 图例 / 地区 ============ */
.region-tools { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.region-filter-label { font-size: 0.82rem; color: var(--text-dim); white-space: nowrap; }
.region-match-count {
  font-size: 0.78rem; color: var(--accent); background: var(--accent-soft);
  border-radius: 999px; padding: 2px 10px; white-space: nowrap;
}
.region-filter-input {
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px;
  background: var(--bg); color: var(--text); font-size: 0.85rem; width: 240px;
}
.region-sort {
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
  background: var(--bg); color: var(--text); font-size: 0.85rem;
}
.legend-actions { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; align-items: center; }
.legend-divider { font-size: 0.78rem; color: var(--text-dim); padding: 0 4px; }
.legend-list { display: flex; flex-wrap: wrap; gap: 8px; }
.legend-item {
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px;
  font-size: 0.85rem; cursor: pointer; transition: all 0.2s; user-select: none;
}
.legend-item:hover, .legend-item.hover {
  background: var(--accent-soft); border-color: var(--accent); transform: translateY(-1px);
}
.legend-item input[type="color"] {
  width: 22px; height: 22px; border: none; background: none; padding: 0; cursor: pointer;
}
.legend-item input[type="checkbox"] { accent-color: var(--accent); }
.legend-item .swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

/* ============ 主区 ============ */
#mainArea { max-width: 1840px; margin: 18px auto 0; }
.view-wrap { background: var(--panel-bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 24px; }
#tableWrap { margin-bottom: 18px; }
#chartWrap { min-height: 460px; position: relative; }
#rateChart { max-height: 520px; }
#chartHint { text-align: center; }
.table-actions { display: flex; justify-content: flex-end; margin-bottom: 12px; }
.table-actions .primary-btn { margin-top: 0; padding: 8px 20px; }
.table-scroll { overflow: auto; max-height: 420px; border-radius: 10px; border: 1px solid var(--border); }

/* ============ 地区工具栏（单行） ============ */
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap; padding: 12px 16px; margin-bottom: 14px;
  background: var(--panel-bg); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.tb-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tb-label { font-size: 0.8rem; color: var(--text-dim); white-space: nowrap; }
.tb-mid { flex: 1 1 auto; justify-content: center; }
.tb-right { margin-left: auto; }
.toolbar .region-filter-input { width: 220px; }
.toolbar .primary-btn { margin-top: 0; padding: 8px 18px; }

/* ============ 轻提示 ============ */
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 18px;
  border-radius: 999px; font-size: 0.85rem; z-index: 999;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25); opacity: 1; transition: opacity 0.25s;
}
.toast.hidden { opacity: 0; pointer-events: none; }

/* ============ 表格 ============ */
#resultTable { width: 100%; border-collapse: collapse; font-size: 0.84rem; }
#resultTable th {
  position: sticky; top: 0; background: var(--panel-bg); z-index: 2;
  padding: 10px 12px; text-align: left; border-bottom: 2px solid var(--border);
  cursor: pointer; white-space: nowrap; user-select: none;
}
#resultTable th:hover { color: var(--accent); }
#resultTable th .sort-mark { margin-left: 4px; font-size: 0.7rem; color: var(--accent); }
#resultTable td { padding: 8px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
/* 地区名 / 阶段标签：允许换行，避免长文本撑出横向滚动条 */
#resultTable th.cell-wrap, #resultTable td.cell-wrap { white-space: normal; word-break: break-all; max-width: 420px; }
/* 开始/结束标签列：加宽，容纳完整原始日期名称 */
#resultTable th.cell-stage, #resultTable td.cell-stage { max-width: 540px; }
/* 数值列：稍微收紧宽度，数字等宽对齐 */
#resultTable th.num-cell { max-width: 130px; }
#resultTable td.num-cell { max-width: 130px; padding-left: 8px; padding-right: 8px; font-variant-numeric: tabular-nums; }
/* 首列"显示"：复选 + 色块 + 取色器 */
#resultTable th.cell-show, #resultTable td.cell-show { width: 100px; max-width: 100px; text-align: center; cursor: default; white-space: nowrap; }
#resultTable td.cell-show { padding: 6px 8px; }
#resultTable td.cell-show input[type="checkbox"] { accent-color: var(--accent); margin: 0; vertical-align: middle; }
#resultTable td.cell-show .swatch { width: 10px; height: 10px; border-radius: 3px; display: inline-block; margin: 0 5px; vertical-align: middle; }
#resultTable td.cell-show input[type="color"] { width: 22px; height: 22px; border: none; background: none; padding: 0; cursor: pointer; vertical-align: middle; }
#resultTable tbody tr { transition: background 0.2s; }
#resultTable tbody tr:hover { background: var(--accent-soft); }
#resultTable tbody tr.row-highlight { background: var(--highlight); animation: pulse 1.2s ease 2; }
#resultTable tbody tr.row-selected { background: var(--highlight); outline: 2px solid var(--accent); }
#resultTable tbody tr.row-illegal { color: var(--danger); }
#resultTable tbody tr.row-invalid { color: var(--text-dim); font-style: italic; }
@keyframes pulse { 50% { background: var(--warn-bg); } }

.badge { font-size: 0.68rem; border-radius: 4px; padding: 1px 6px; margin-left: 6px; }
.badge-illegal { background: var(--danger); color: #fff; }
.badge-invalid { background: var(--text-dim); color: #fff; }

/* ============ 响应式 ============ */
@media (max-width: 760px) {
  .control-grid { flex-direction: column; }
  .twostage-grid { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; gap: 10px; }
}