:root {
  color-scheme: light;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #192231;
  background: #f3f6fa;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }

.page-shell { max-width: 1180px; margin: 0 auto; padding: 32px 24px 56px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.topbar h1, .panel h2 { margin: 0; }
.topbar p { margin: 6px 0 0; color: #68758a; }
.actions { display: flex; gap: 10px; align-items: center; }

.panel, .card, .auth-card {
  background: #fff;
  border: 1px solid #dde4ed;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgb(31 46 69 / 7%);
}
.panel { padding: 22px; margin-bottom: 20px; }
.card { padding: 20px; transition: transform 120ms ease, box-shadow 120ms ease; }
.card:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgb(31 46 69 / 12%); }
.card h2 { margin: 0 0 18px; font-size: 19px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 16px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(110px, 1fr)); gap: 12px; }
.metric { padding: 14px; border-radius: 10px; background: #f5f8fc; }
.metric span { display: block; color: #718097; font-size: 13px; }
.metric strong { display: block; margin-top: 7px; color: #1768e0; font-size: 25px; }

.button { border: 0; border-radius: 8px; padding: 10px 16px; background: #1768e0; color: #fff; }
.button.secondary { color: #29364a; background: #e9eef6; }
.button.danger { background: #be3d4d; }
.inline-form { display: grid; grid-template-columns: minmax(180px, 1fr) minmax(220px, 2fr) auto; gap: 12px; margin-top: 16px; }
label { display: grid; gap: 7px; color: #4e5b6f; font-size: 14px; }
input { width: 100%; border: 1px solid #cfd8e5; border-radius: 8px; padding: 10px 12px; color: #192231; background: #fff; }
input:focus { outline: 2px solid #9bc2ff; border-color: #1768e0; }

.auth-layout { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: min(440px, 100%); padding: 30px; }
.auth-card h1 { margin: 0 0 8px; }
.auth-card > p { margin: 0 0 24px; color: #68758a; line-height: 1.6; }
.auth-card form { display: grid; gap: 15px; }
.message { min-height: 22px; margin-top: 12px; color: #be3d4d; }
.message.success { color: #16794b; }

.chart { width: 100%; height: auto; min-height: 260px; margin-top: 16px; border-radius: 10px; background: #f8fafd; }
.chart-grid { stroke: #dfe6ef; stroke-width: 1; }
.chart-line { fill: none; stroke: #1768e0; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.chart-point { fill: #fff; stroke: #1768e0; stroke-width: 2; }
.chart-label { fill: #718097; font-size: 11px; }
.two-column { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; }
table { width: 100%; border-collapse: collapse; margin-top: 14px; }
th, td { padding: 11px 10px; text-align: left; border-bottom: 1px solid #e5eaf1; }
th { color: #66758c; font-size: 13px; }
.empty { color: #718097; padding: 20px 0; }
.back-link { color: #1768e0; font-weight: 600; }

@media (max-width: 760px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .inline-form, .two-column { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
}