/* ── 重置 & 基础 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:    #1d72e8;
  --blue-dk: #1558c0;
  --green:   #18a058;
  --orange:  #e89a18;
  --red:     #e84040;
  --gray-05: #f5f6f8;
  --gray-10: #eaecf0;
  --gray-30: #c4c9d4;
  --gray-60: #8890a0;
  --gray-80: #444c5e;
  --text:    #1a2032;
  --radius:  10px;
  --shadow:  0 2px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 6px 24px rgba(0,0,0,.12);

  /* 七大区配色 */
  --r1: #4e79a7;
  --r2: #f28e2b;
  --r3: #e15759;
  --r4: #76b7b2;
  --r5: #59a14f;
  --r6: #edc948;
  --r7: #b07aa1;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--gray-05);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

/* ── 顶部 Banner ── */
.top-banner {
  background: linear-gradient(135deg, #1a2e5a 0%, #1d72e8 100%);
  color: #fff;
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: 0 2px 16px rgba(29,114,232,.3);
}
.banner-left { display: flex; align-items: center; gap: 16px; }
.banner-logo { opacity: .9; flex-shrink: 0; }
.top-banner h1 { font-size: 20px; font-weight: 700; letter-spacing: .3px; }
.banner-sub { font-size: 12px; opacity: .8; margin-top: 3px; }
.banner-stats { display: flex; gap: 28px; }
.bstat { text-align: center; }
.bstat-n { display: block; font-size: 26px; font-weight: 700; line-height: 1.1; }
.bstat-l { font-size: 11px; opacity: .75; }

/* ── 阶段进度轨道 ── */
.stage-track-wrap {
  background: #fff;
  padding: 20px 40px;
  border-bottom: 1px solid var(--gray-10);
  box-shadow: var(--shadow);
}
.stage-track {
  display: flex;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}
.stage-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 90px;
}
.sn-circle {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gray-10);
  color: var(--gray-60);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  border: 2px solid var(--gray-30);
  transition: all .35s;
}
.sn-label {
  font-size: 11px;
  color: var(--gray-60);
  text-align: center;
  line-height: 1.4;
  transition: color .35s;
}
.stage-line {
  flex: 1;
  height: 3px;
  background: var(--gray-10);
  border-radius: 2px;
  margin-bottom: 24px;
  transition: background .35s;
}

/* 激活样式 */
.stage-node.active .sn-circle  { background: var(--blue); border-color: var(--blue); color: #fff; box-shadow: 0 0 0 5px rgba(29,114,232,.18); }
.stage-node.active .sn-label   { color: var(--blue); font-weight: 600; }
.stage-node.done .sn-circle    { background: var(--green); border-color: var(--green); color: #fff; }
.stage-node.done .sn-label     { color: var(--green); }
.stage-line.done               { background: var(--green); }

/* ── 主体布局 ── */
.workspace {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 20px;
  padding: 20px 24px;
  max-width: 1600px;
  margin: 0 auto;
}

/* ── 左侧控制面板 ── */
.ctrl-panel { display: flex; flex-direction: column; gap: 16px; }

.ctrl-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}
.ctrl-card-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-80);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* 参数配置 */
.param-row { margin-bottom: 14px; }
.param-row label { display: block; font-size: 12px; color: var(--gray-60); margin-bottom: 6px; }
.param-range { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--gray-80); }
.param-range input, .param-single {
  width: 64px; padding: 6px 8px;
  border: 1px solid var(--gray-30);
  border-radius: 6px;
  font-size: 13px;
  text-align: center;
  transition: border-color .2s;
}
.param-single { width: 80px; }
.param-range input:focus, .param-single:focus { outline: none; border-color: var(--blue); }
.param-select {
  width: 100%; padding: 8px 10px;
  border: 1px solid var(--gray-30);
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
  cursor: pointer;
  transition: border-color .2s;
}
.param-select:focus { outline: none; border-color: var(--blue); }
.strategy-hint {
  font-size: 12px;
  color: var(--blue);
  background: rgba(29,114,232,.06);
  padding: 8px 10px;
  border-radius: 6px;
  margin-top: 8px;
}
#boostConfig { margin-top: -6px; }
#boostFactorRow { margin-top: -6px; align-items: center; gap: 8px; }
#boostFactorRow input[type=range] {
  flex: 1;
  accent-color: var(--blue);
}

/* 阶段按钮 */
.stage-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  margin-bottom: 10px;
  background: var(--gray-05);
  border: 1.5px solid var(--gray-10);
  border-radius: 8px;
  cursor: pointer;
  transition: all .2s;
  text-align: left;
}
.stage-btn:hover:not(:disabled) {
  background: #e8f0fd;
  border-color: var(--blue);
}
.stage-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}
.stage-btn.done {
  background: #edfaf2;
  border-color: var(--green);
}
.sbtn-num {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}
.sbtn-text { flex: 1; }
.sbtn-text b { display: block; font-size: 13px; }
.sbtn-text small { font-size: 11px; color: var(--gray-60); }
.sbtn-arrow { color: var(--gray-30); font-size: 18px; }

.btn-group-row { display: flex; gap: 10px; margin-top: 6px; }
.btn-run-all {
  flex: 1;
  padding: 11px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dk) 100%);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.btn-run-all:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(29,114,232,.35); }
.btn-reset {
  padding: 11px 16px;
  background: #fff;
  border: 1.5px solid var(--gray-30);
  border-radius: 8px;
  font-size: 13px;
  color: var(--gray-80);
  cursor: pointer;
  transition: all .2s;
}
.btn-reset:hover { background: #fef2f2; border-color: var(--red); color: var(--red); }

.btn-export {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  background: #fff;
  border: 1.5px solid var(--gray-10);
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
}
.btn-export:last-child { margin-bottom: 0; }
.btn-export:hover { background: var(--gray-05); border-color: var(--blue); color: var(--blue); }
.btn-export-excel {
  background: linear-gradient(135deg, #1d6f42 0%, #217346 100%);
  color: #fff;
  border-color: #1d6f42;
  font-weight: 600;
}
.btn-export-excel:hover { background: linear-gradient(135deg, #175533 0%, #1a5c38 100%); color: #fff; border-color: #175533; }

/* ── 右侧结果区 ── */
.result-area {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 600px;
}

.tab-bar {
  display: flex;
  border-bottom: 2px solid var(--gray-10);
  background: var(--gray-05);
  padding: 0 8px;
  flex-shrink: 0;
}
.tab {
  padding: 13px 18px;
  border: none;
  background: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-60);
  cursor: pointer;
  position: relative;
  transition: color .2s;
  white-space: nowrap;
}
.tab:hover { color: var(--blue); }
.tab.active { color: var(--blue); font-weight: 700; }
.tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 1px;
}

.tab-pane { display: none; padding: 24px; overflow-y: auto; flex: 1; }
.tab-pane.active { display: block; }

.pane-header { margin-bottom: 20px; }
.pane-header h2 { font-size: 17px; margin-bottom: 6px; }
.pane-header p { font-size: 13px; color: var(--gray-60); }
.pane-header strong { color: var(--blue); }

.empty-hint {
  text-align: center;
  color: var(--gray-60);
  padding: 60px 20px;
  font-size: 14px;
}

/* ── 第一阶段：区域网格 ── */
.region-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.region-card {
  border-radius: 10px;
  overflow: hidden;
  border: 1.5px solid var(--gray-10);
  transition: box-shadow .2s;
}
.region-card:hover { box-shadow: var(--shadow-lg); }
.region-header {
  padding: 14px 16px 10px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.region-header .rh-name { font-size: 16px; font-weight: 700; }
.region-header .rh-desc { font-size: 11px; opacity: .85; }
.region-header .rh-count {
  font-size: 22px; font-weight: 700;
  background: rgba(255,255,255,.25);
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.region-provinces {
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.prov-tag {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--gray-05);
  color: var(--gray-80);
  border: 1px solid var(--gray-10);
  display: flex;
  align-items: center;
  gap: 6px;
}
.prov-tag.sampled {
  background: #e8f0fd;
  color: var(--blue);
  border-color: #b8d0f8;
}
.prov-tag .prov-pop { font-size: 10px; opacity: .7; }

/* ── 第二阶段：城市列表 ── */
.city-list { display: flex; flex-direction: column; gap: 20px; }
.city-province-block { }
.city-prov-title {
  font-size: 13px; font-weight: 700;
  color: var(--gray-80);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-10);
  display: flex; align-items: center; gap: 8px;
}
.city-row-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.city-card {
  border-radius: 8px;
  border: 1.5px solid var(--gray-10);
  padding: 14px;
  transition: all .2s;
}
.city-card:hover { box-shadow: var(--shadow); border-color: var(--gray-30); }
.city-role-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.city-role-badge.capital { background: #fde8e8; color: #c9342a; }
.city-role-badge.city    { background: #e8f0fd; color: #1558c0; }
.city-role-badge.county  { background: #e8faf0; color: #0e7a43; }
.city-name { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.city-pop  { font-size: 11px; color: var(--gray-60); }

/* ── 第三阶段：街道列表 ── */
.street-list { display: flex; flex-direction: column; gap: 20px; }
.street-city-block { }
.street-city-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-80);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-10);
  display: flex; align-items: center; gap: 8px;
}
.street-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.street-tag {
  padding: 8px 16px;
  border-radius: 6px;
  background: var(--gray-05);
  border: 1.5px solid var(--gray-10);
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-80);
  display: flex;
  align-items: center;
  gap: 6px;
}
.street-tag .st-icon { font-size: 14px; }
.street-tag.urban { border-color: #b8d0f8; background: #ecf2fe; color: #1558c0; }
.street-tag.rural { border-color: #a8d8b4; background: #edfaf2; color: #0e7a43; }

/* ── 第四阶段 ── */
.age-dist-ref {
  background: var(--gray-05);
  border: 1px solid var(--gray-10);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
}
.age-dist-ref h4 { font-size: 12px; font-weight: 700; color: var(--gray-60); margin-bottom: 12px; text-transform: uppercase; }
.age-bars { display: flex; flex-direction: column; gap: 4px; }
.age-bar-row {
  display: grid;
  grid-template-columns: 70px 1fr 1fr 60px;
  align-items: center;
  gap: 8px;
  font-size: 11px;
}
.age-bar-label { color: var(--gray-60); text-align: right; }
.age-bar-male, .age-bar-female {
  height: 10px;
  border-radius: 2px;
  position: relative;
}
.age-bar-male   { background: #4a90d9; }
.age-bar-female { background: #e87c7c; }
.age-bar-total  { color: var(--gray-60); font-size: 10px; }

.people-list { display: flex; flex-direction: column; gap: 20px; }
.people-block { border: 1.5px solid var(--gray-10); border-radius: 10px; overflow: hidden; }
.people-block-header {
  padding: 12px 16px;
  background: var(--gray-05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--gray-10);
}
.people-block-title { font-size: 13px; font-weight: 700; }
.people-block-meta { font-size: 11px; color: var(--gray-60); }
.people-block-meta strong { color: var(--blue); }
.people-table-wrap { overflow-x: auto; max-height: 280px; overflow-y: auto; }
.people-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.people-table th {
  padding: 8px 12px;
  background: #fff;
  text-align: left;
  font-weight: 600;
  color: var(--gray-60);
  border-bottom: 1px solid var(--gray-10);
  position: sticky; top: 0;
}
.people-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--gray-05);
}
.people-table tr:last-child td { border-bottom: none; }
.sex-male   { color: #4a90d9; font-weight: 600; }
.sex-female { color: #e87c7c; font-weight: 600; }

/* ── 汇总统计 ── */
.summary-content {}
.summary-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.sum-card {
  background: var(--gray-05);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  border: 1.5px solid var(--gray-10);
}
.sum-card .sum-n { font-size: 36px; font-weight: 700; color: var(--blue); }
.sum-card .sum-l { font-size: 12px; color: var(--gray-60); margin-top: 4px; }

.summary-region-dist { margin-top: 20px; }
.summary-region-dist h4 { font-size: 13px; font-weight: 700; margin-bottom: 14px; color: var(--gray-80); }
.region-dist-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.rdb-label { width: 80px; font-size: 12px; color: var(--gray-80); text-align: right; }
.rdb-bar-wrap { flex: 1; height: 20px; background: var(--gray-05); border-radius: 4px; overflow: hidden; }
.rdb-bar { height: 100%; border-radius: 4px; transition: width .5s; }
.rdb-n { font-size: 12px; color: var(--gray-60); width: 30px; }

/* ── 历史记录 ── */
.history-list { display: flex; flex-direction: column; gap: 12px; }
.history-card {
  border: 1.5px solid var(--gray-10);
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.history-time { font-size: 11px; color: var(--gray-60); margin-bottom: 4px; }
.history-nums { display: flex; gap: 16px; font-size: 12px; }
.history-nums span strong { color: var(--blue); }
.history-actions { display: flex; gap: 8px; }
.btn-sm {
  padding: 5px 12px;
  font-size: 11px;
  border-radius: 5px;
  border: 1px solid var(--gray-30);
  background: #fff;
  cursor: pointer;
  color: var(--gray-80);
  transition: all .15s;
}
.btn-sm:hover { background: var(--gray-05); }

/* ── 加载遮罩 ── */
.loading-mask {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 100;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
}
.loading-mask.show { display: flex; }
.loading-box {
  background: #fff;
  border-radius: 14px;
  padding: 40px 56px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.spin {
  width: 48px; height: 48px;
  border: 4px solid var(--gray-10);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-box p { font-size: 14px; color: var(--gray-80); }

/* ── 响应式 ── */
@media (max-width: 1100px) {
  .workspace { grid-template-columns: 1fr; }
  .city-row-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .banner-stats { display: none; }
  .stage-track-wrap { padding: 14px; }
  .city-row-grid { grid-template-columns: 1fr; }
  .summary-stat-grid { grid-template-columns: repeat(2, 1fr); }
}