/* 资料速查 Demo 演示页样式 (task #9). 克制、像企业内部工具，不喧宾夺主。 */
:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #1f2937;
  --ink-soft: #5b6776;
  --line: #e3e8ee;
  --brand: #0f5e9c;
  --brand-soft: #e8f1f9;
  --hl: #ff9800;
  --warn-bg: #fff7e6;
  --warn-line: #f0c36d;
  --abstain-bg: #eef1f4;
}

* {
  box-sizing: border-box;
}
/* hidden attribute must win over class display rules (e.g. .canvas-box inline-block) */
[hidden] {
  display: none !important;
}
html,
body {
  margin: 0;
  height: 100%;
}
body {
  font-family:
    -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand-mark {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand);
}
.brand-sub {
  margin-left: 10px;
  font-size: 13px;
  color: var(--ink-soft);
}
.demo-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}
.demo-switch-label {
  font-size: 12px;
  color: var(--ink-soft);
}
.chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  border-radius: 14px;
  padding: 4px 12px;
  font-size: 13px;
  cursor: pointer;
}
.chip.active {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--brand);
}

/* 布局 */
.layout {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(380px, 1.1fr);
  gap: 0;
  min-height: 0;
}
.pane {
  min-height: 0;
  overflow: auto;
  padding: 20px;
}
.pane-qa {
  border-right: 1px solid var(--line);
}
.pane-doc {
  background: #eceff3;
  display: flex;
  flex-direction: column;
}

/* 提问框 */
.ask {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.ask input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
}
.ask button {
  padding: 10px 18px;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}

/* 提示条 */
.notice {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 14px;
}
.notice-verify {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  color: #8a5a00;
}
.notice-abstain {
  background: var(--abstain-bg);
  border: 1px solid var(--line);
  color: var(--ink-soft);
}

/* 答案 */
.summary {
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 16px;
}
.block {
  margin-bottom: 18px;
}
.block-title {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 8px;
  font-weight: 600;
}
.causes,
.steps {
  margin: 0;
  padding-left: 20px;
}
.causes li,
.steps li {
  margin-bottom: 8px;
  line-height: 1.6;
}
.cause-text {
  margin-right: 4px;
}

/* 出处角标 */
.cite-ref {
  border: 1px solid var(--brand);
  color: var(--brand);
  background: #fff;
  border-radius: 4px;
  font-size: 11px;
  padding: 0 5px;
  margin-left: 3px;
  cursor: pointer;
  vertical-align: super;
  line-height: 1.4;
}
.cite-ref:hover {
  background: var(--brand-soft);
}

/* 出处卡片 */
.cites {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cite-card {
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  cursor: pointer;
}
.cite-card:hover {
  border-color: var(--brand);
}
.cite-card.active {
  border-color: var(--brand);
  box-shadow: 0 0 0 2px var(--brand-soft);
}
.cite-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.cite-tag {
  background: var(--brand);
  color: #fff;
  border-radius: 4px;
  font-size: 11px;
  padding: 1px 6px;
}
.cite-src {
  font-size: 12px;
  color: var(--ink-soft);
}
.cite-snippet {
  font-size: 13px;
  color: var(--ink);
  line-height: 1.5;
}
.meta {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 8px;
}
.empty {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
  padding: 24px 4px;
}

/* 手册区 */
.doc-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.doc-label {
  font-size: 14px;
  font-weight: 600;
}
.doc-page {
  font-size: 12px;
  color: var(--ink-soft);
}
.doc-stage {
  flex: 1;
  overflow: auto;
  padding: 18px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}
.doc-hint {
  color: var(--ink-soft);
  font-size: 13px;
  text-align: center;
  margin-top: 40px;
  max-width: 280px;
  line-height: 1.7;
}
.canvas-box {
  position: relative;
  display: inline-block;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}
.canvas-box canvas {
  display: block;
}
.highlights {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}
.hl {
  position: absolute;
  background: rgba(255, 152, 0, 0.28);
  border: 2px solid var(--hl);
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 152, 0, 0.35);
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .pane-qa {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
}