/* ==========================================================================
   layout.css — 整体布局：页头 / 导航 / 栅格 / 卡片 / KPI / 页脚
   ========================================================================== */

/* ---------- 页头 ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid var(--border);
}

.app-header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand__mark {
  flex: none;
  filter: drop-shadow(0 4px 10px rgba(37, 87, 214, 0.28));
}

.brand__text {
  min-width: 0;
}

.brand__text h1 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.brand__text p {
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.header-meta__source {
  font-size: 12px;
  color: var(--text-3);
}

/* ---------- 导航 ---------- */
.app-nav {
  position: sticky;
  top: var(--header-h);
  z-index: 49;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid var(--border);
}

.app-nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.app-nav__inner::-webkit-scrollbar {
  display: none;
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 14px 12px;
  border: none;
  background: none;
  color: var(--text-2);
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 2.5px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-item:hover {
  color: var(--primary);
}

.nav-item.is-active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.nav-item__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-num);
  background: var(--surface-3);
  color: var(--text-3);
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-item.is-active .nav-item__no {
  background: var(--primary);
  color: #fff;
}

.nav-item--overview .nav-item__no {
  font-size: 12px;
}

/* ---------- 主体 ---------- */
.app-main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 24px 56px;
}

/* ---------- 12 列栅格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.grid + .grid {
  margin-top: 16px;
}

.span-2  { grid-column: span 2; }
.span-3  { grid-column: span 3; }
.span-4  { grid-column: span 4; }
.span-5  { grid-column: span 5; }
.span-6  { grid-column: span 6; }
.span-7  { grid-column: span 7; }
.span-8  { grid-column: span 8; }
.span-9  { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card--hover:hover {
  box-shadow: var(--shadow-md);
}

.card--flush {
  padding: 0;
  overflow: hidden;
}

.card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.card__title {
  font-size: 15px;
  font-weight: 650;
  color: var(--text-1);
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.4;
}

.card__title::before {
  content: "";
  width: 4px;
  height: 16px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary-2), var(--teal));
  flex: none;
}

.card__sub {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 2px;
  font-weight: 400;
}

.card__tools {
  flex: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card__body {
  flex: 1;
  min-width: 0;
}

.card__foot {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.7;
}

/* ---------- 图表容器 ---------- */
.chart {
  width: 100%;
  height: 280px;
}

.chart--sm { height: 220px; }
.chart--lg { height: 340px; }
.chart--xl { height: 400px; }

/* ---------- KPI 卡片 ---------- */
.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 16px 18px 14px;
  position: relative;
  overflow: hidden;
  min-width: 0;
}

.kpi::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--kpi-accent, linear-gradient(180deg, var(--primary-2), var(--primary)));
}

.kpi__label {
  font-size: 12.5px;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 6px;
}

.kpi__value {
  margin-top: 6px;
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 30px;
  line-height: 1.15;
  color: var(--text-1);
  letter-spacing: -0.02em;
}

.kpi__value .unit {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-3);
  margin-left: 2px;
}

.kpi__value .kpi__small {
  font-size: 16px;
  color: var(--text-2);
  font-weight: 600;
}

.kpi__foot {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.kpi--accent-primary { --kpi-accent: linear-gradient(180deg, #4a7dff, #2557d6); }
.kpi--accent-teal    { --kpi-accent: linear-gradient(180deg, #2ec4b6, #0f9d8f); }
.kpi--accent-amber   { --kpi-accent: linear-gradient(180deg, #fbbf24, #d97706); }
.kpi--accent-violet  { --kpi-accent: linear-gradient(180deg, #a78bfa, #7c3aed); }
.kpi--accent-green   { --kpi-accent: linear-gradient(180deg, #4ade80, #16a34a); }
.kpi--accent-cyan    { --kpi-accent: linear-gradient(180deg, #22d3ee, #0891b2); }
.kpi--accent-rose    { --kpi-accent: linear-gradient(180deg, #fb7185, #e11d48); }
.kpi--accent-indigo  { --kpi-accent: linear-gradient(180deg, #818cf8, #4f46e5); }

/* ---------- 分区页头 ---------- */
.section-hero {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 4px 2px 18px;
}

.section-hero__no {
  flex: none;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #2b5cff, #12b5a5);
  box-shadow: 0 8px 20px rgba(37, 87, 214, 0.28);
}

.section-hero__text h2 {
  font-size: 22px;
  font-weight: 750;
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.section-hero__text p {
  margin-top: 4px;
  color: var(--text-2);
  font-size: 13.5px;
  max-width: 920px;
}

.section-hero__tags {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

/* 自评总结引用条 */
.summary-quote {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: linear-gradient(135deg, rgba(37, 87, 214, 0.06), rgba(18, 181, 165, 0.07));
  border: 1px solid rgba(37, 87, 214, 0.14);
  border-left: 4px solid var(--primary);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.75;
}

.summary-quote__label {
  flex: none;
  font-weight: 700;
  color: var(--primary);
  font-size: 12px;
  padding-top: 1px;
}

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface-2);
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  font-size: 12.5px;
}

.data-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-1);
  vertical-align: top;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover td {
  background: var(--surface-2);
}

.data-table .num {
  font-weight: 600;
}

/* ---------- 列表 ---------- */
.plain-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plain-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.65;
}

.plain-list .li-mark {
  flex: none;
  margin-top: 7px;
}

.plain-list b {
  color: var(--text-1);
  font-weight: 600;
}

/* ---------- 空状态（开发中占位） ---------- */
.empty-state {
  padding: 80px 20px;
  text-align: center;
  color: var(--text-3);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
}

.empty-state h3 {
  color: var(--text-2);
  font-size: 16px;
  margin-bottom: 6px;
}

/* ---------- 页脚 ---------- */
.app-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.app-footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 24px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-2);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.app-footer__note {
  color: var(--text-3);
  font-size: 12px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1160px) {
  .span-3 { grid-column: span 6; }
  .span-4 { grid-column: span 6; }
  .span-8 { grid-column: span 12; }
  .span-9 { grid-column: span 12; }
}

@media (max-width: 860px) {
  .app-header__inner { flex-wrap: wrap; }
  .header-meta { flex-wrap: wrap; }
  .span-2, .span-3, .span-4, .span-5, .span-6, .span-7 {
    grid-column: span 12;
  }
  .app-main { padding: 16px 14px 40px; }
  .app-nav__inner { padding: 0 14px; }
  .app-header__inner { padding: 10px 14px; }
}