:root {
  --bg: #f4f7f9;
  --card: #fff;
  --text: #202a33;
  --muted: #687683;
  --line: #dfe6eb;
  --primary: #356782;
  --primary-dark: #19364a;
  --primary-soft: #e7f0f5;
  --up: #c83232;
  --up-soft: #fde8e8;
  --down: #168451;
  --down-soft: #e3f4eb;
  --info: #356782;
  --info-soft: #e7f0f5;
  --danger: #a83636;
  --amber: #9a6814;
  --shadow: 0 8px 30px rgba(35, 58, 72, .07);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  height: 66px;
  padding: 0 max(24px, calc((100% - 1180px) / 2));
  gap: 40px;
  background: var(--primary-dark);
  color: #fff;
}

.brand { color: #fff; font-size: 19px; font-weight: 750; }
.nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.nav a, .link-button { color: #dce8ef; }
.nav form { margin: 0; }
.link-button { border: 0; background: none; color: #dce8ef; font: inherit; cursor: pointer; }
.nav-toggle { display: none; margin-left: auto; border: 0; background: none; color: #fff; font-size: 24px; }

.container { max-width: 1180px; margin: 34px auto; padding: 0 22px 60px; }
.container.narrow { max-width: 500px; margin-top: 11vh; }
.page-head, .section-head, .position-title, .actions { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.page-head { margin-bottom: 22px; }
.page-head h1 { margin: 2px 0 0; font-size: 30px; }
.page-head p { margin: 3px 0; }
.eyebrow { color: var(--primary); font-size: 12px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.muted, small { color: var(--muted); }

.card, .stat {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.login-card { padding: 34px; }
.login-card h1 { margin: 6px 0; }
.stacked-form, .form-grid { display: grid; gap: 18px; }
.stacked-form { margin-top: 24px; }
.form-grid { grid-template-columns: repeat(2, 1fr); }
.form-card { padding: 26px; }
.full { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 6px; font-weight: 650; }
label b { color: var(--danger); }
input, select, textarea, button { font: inherit; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #c5d0d8;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 3px solid var(--primary-soft); border-color: var(--primary); }

button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.primary { background: var(--primary); color: #fff; }
.secondary { border-color: #bdd1dc; background: var(--primary-soft); color: var(--primary); }
.ghost { border-color: var(--line); background: #fff; color: var(--text); }
.danger { background: var(--danger); color: #fff; }
.danger.ghost { border-color: #e8c5c5; background: #fff; color: var(--danger); }
.wide { width: 100%; }
.form-actions, .filter-actions, .pagination, .delete-zone { display: flex; align-items: center; gap: 12px; }

.alert { margin-bottom: 18px; padding: 12px 15px; border-radius: 9px; }
.alert.success { background: var(--info-soft); color: var(--info); }
.alert.error { background: #fff4df; color: #835716; }
.alert ul { margin: 0; padding-left: 20px; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
.stat { padding: 19px; }
.stat span, .detail-grid span, .position-metrics span { display: block; color: var(--muted); font-size: 13px; }
.stat strong { display: block; margin-top: 6px; font-size: 24px; }
.stat.warning { background: #fff9ec; }

/* 中文证券市场惯例：红色表示上涨/盈利，绿色表示下跌/亏损。 */
.profit { color: var(--up) !important; }
.loss { color: var(--down) !important; }
.trade-side.buy { color: var(--up); }
.trade-side.sell { color: var(--down); }

.section { margin-top: 22px; padding: 0; overflow: hidden; }
.section-head { padding: 18px 20px; border-bottom: 1px solid var(--line); }
.section-head h2 { margin: 0; font-size: 19px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; white-space: nowrap; }
th, td { padding: 13px 16px; border-bottom: 1px solid #edf1f4; text-align: left; }
th { background: #f8fafb; color: var(--muted); font-size: 12px; text-transform: uppercase; }
.empty { padding: 48px 22px; text-align: center; }
.empty h2, .empty h3 { margin-bottom: 4px; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 99px; font-size: 12px; font-weight: 750; }
.badge.buy { background: var(--up-soft); color: var(--up); }
.badge.sell { background: var(--down-soft); color: var(--down); }
.badge.open { background: var(--info-soft); color: var(--info); }
.badge.closed { background: #edf0ee; color: var(--muted); }

.cards-list, .position-list { display: grid; gap: 14px; }
.account-card { display: flex; align-items: center; justify-content: space-between; padding: 20px; }
.account-card h2 { margin: 0; }
.account-card p { margin: 4px 0; }
.filters { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; padding: 16px; }
.filters.compact { grid-template-columns: 1fr 1fr 1.2fr auto; }
.filters label { font-size: 13px; }
.checkbox { flex-direction: row; align-items: center; padding-top: 26px; }
.checkbox input { width: auto; }
.filter-actions { align-self: end; }
.pagination { justify-content: flex-end; margin-top: 16px; }
.note { margin-bottom: 18px; padding: 18px; }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; padding: 25px; }
.detail-grid strong, .position-metrics strong { display: block; margin-top: 4px; font-size: 17px; }
.delete-zone { margin-top: 20px; padding-top: 18px; border-top: 1px solid #e3caca; }
.position-card { padding: 22px; }
.position-title h2 { margin: 0; }
.position-title p { margin: 3px 0; }
.position-metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 20px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.price-form { display: flex; align-items: end; gap: 12px; margin-top: 16px; }
.price-form label { max-width: 190px; }
.price-form button { margin-left: auto; }
.performance-chart-card { overflow: hidden; }
.performance-chart-wrap { padding: 18px; overflow-x: auto; }
.performance-chart { display: block; width: 100%; min-width: 680px; }
.chart-zero { stroke: #bdc8cf; stroke-width: 1; stroke-dasharray: 5 5; }
.chart-line { fill: none; stroke: var(--primary); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.chart-latest { fill: var(--primary); stroke: #fff; stroke-width: 2; }
.chart-label { fill: var(--muted); font-size: 12px; }
.chart-label-end { text-anchor: end; }

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .filters, .filters.compact { grid-template-columns: repeat(2, 1fr); }
  .position-metrics { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 650px) {
  .topbar { padding: 0 18px; }
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    top: 66px;
    right: 0;
    left: 0;
    display: none;
    align-items: flex-start;
    padding: 16px 22px;
    background: var(--primary-dark);
    flex-direction: column;
  }
  .nav.open { display: flex; }
  .container { margin-top: 22px; padding: 0 14px 45px; }
  .page-head, .account-card { align-items: flex-start; flex-direction: column; }
  .stats-grid, .form-grid, .filters, .filters.compact, .detail-grid, .position-metrics { grid-template-columns: 1fr; }
  .full { grid-column: auto; }
  .actions { flex-wrap: wrap; }
  .checkbox { padding-top: 6px; }
  .price-form { align-items: stretch; flex-direction: column; }
  .price-form label { max-width: none; }
  .price-form button { margin-left: 0; }
  .stat strong { font-size: 21px; }
  .page-head h1 { font-size: 26px; }
}