:root {
  --bg: #f1f3f9;
  --panel: #ffffff;
  --line: #e2e8f0;
  --ink: #1f2937;
  --muted: #64748b;
  --brand: #1e293b;
  --accent: #1e40af;
  --btn: #4361ee;
  --btn-hover: #3752d6;
  --btn-active: #2d46be;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Microsoft YaHei UI", "PingFang SC", sans-serif; background: var(--bg); color: var(--ink); }
.app-shell { min-height: 100vh; }
.topbar { position: sticky; top: 0; z-index: 20; background: var(--brand); border-bottom: 1px solid rgba(255,255,255,0.06); }
.brand { display: flex; align-items: center; gap: 14px; padding: 10px 18px; }
.brand-logo { width: 36px; height: 36px; object-fit: cover; border-radius: 10px; border: 2px solid rgba(255,255,255,0.12); }
.brand h1 { margin: 0; color: #fff; font-size: 17px; font-weight: 700; }
.brand p { margin: 2px 0 0; color: #94a3b8; font-size: 12.5px; }

.module-tabs, .workspace-tabs { display: flex; gap: 6px; overflow-x: auto; padding: 8px 14px 0; background: #f8fafc; border-bottom: 1px solid var(--line); }
.module-tabs button, .workspace-tabs button {
  border: 1px solid var(--line); background: #fff; color: var(--muted); border-radius: 8px 8px 0 0;
  padding: 7px 16px; cursor: pointer; white-space: nowrap; font-size: 13.5px; font-weight: 500;
  border-bottom: 2px solid transparent; transition: all 0.15s;
}
.module-tabs button:hover, .workspace-tabs button:hover { color: var(--ink); background: #f1f5f9; }
.module-tabs button.active, .workspace-tabs button.active {
  background: #fff; color: var(--btn); border-bottom-color: var(--btn); font-weight: 600; border-color: var(--line); border-bottom-color: var(--btn);
}

.content { padding: 10px 14px; }
.module { display: none; }
.module.active { display: block; }
.workspace { display: none; }
.workspace.active { display: block; }

.toolbar.wrap { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; padding: 8px 0; }
.toolbar label { display: inline-flex; align-items: center; gap: 5px; color: var(--muted); font-size: 13px; }
.toolbar input, .toolbar select {
  height: 32px; border: 1px solid var(--line); border-radius: 6px; padding: 0 8px;
  min-width: 64px; background: #fff; font-size: 13px; color: var(--ink); transition: border-color 0.15s;
}
.toolbar input:focus, .toolbar select:focus { outline: none; border-color: var(--btn); box-shadow: 0 0 0 2px rgba(67,97,238,0.12); }

button {
  border: none; background: var(--btn); color: #fff; border-radius: 6px;
  padding: 6px 14px; cursor: pointer; white-space: nowrap; font-size: 13px; font-weight: 500;
  transition: background 0.15s;
}
button:hover { background: var(--btn-hover); }
button:active { background: var(--btn-active); }

.panel-head button {
  background: #e2e8f0; color: #374151; font-size: 12px; padding: 4px 10px; border-radius: 5px;
}
.panel-head button:hover { background: #cbd5e1; }

.stats { color: var(--accent); font-weight: 700; font-size: 13.5px; padding: 4px 0 8px; }

.panel-grid { display: grid; gap: 10px; }
.panel-grid.one { grid-template-columns: 1fr; }
.panel-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.panel-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.panel-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 8px 10px; min-width: 0; box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.panel-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 13px; }
.panel-head strong { flex: 1; color: var(--ink); }
.panel-head span { color: var(--accent); font-weight: 700; font-size: 12.5px; }

textarea {
  width: 100%; min-height: 340px; resize: vertical; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font-family: Consolas, "Courier New", monospace; font-size: 13px;
  background: #fff; color: var(--ink); transition: border-color 0.15s;
}
textarea:focus { outline: none; border-color: var(--btn); box-shadow: 0 0 0 2px rgba(67,97,238,0.1); }
textarea[readonly] { background: #f8fafc; }
.workspace-container .panel-grid.two textarea { min-height: 280px; }

.table-scroll { overflow: auto; max-height: 70vh; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.data-table { width: 100%; border-collapse: collapse; min-width: 1200px; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: 5px 8px; font-size: 13px; white-space: nowrap; }
.data-table th { position: sticky; top: 0; background: #f1f5f9; cursor: pointer; font-weight: 600; color: var(--ink); }
.data-table th:hover { background: #e2e8f0; }
.data-table tr:hover td { background: #f8fafc; }

@media (max-width: 1100px) {
  .panel-grid.two, .panel-grid.three, .panel-grid.four { grid-template-columns: 1fr; }
  textarea { min-height: 220px; }
}
@media (max-width: 600px) {
  .brand { padding: 8px 12px; }
  .brand h1 { font-size: 15px; }
  .content { padding: 8px; }
  .toolbar.wrap { gap: 5px 6px; }
  button { padding: 5px 10px; font-size: 12px; }
}