:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --line: #d9dee7;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
}

.sidebar {
  background: #162033;
  color: #fff;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  font-weight: 700;
}

.brand-title {
  font-weight: 700;
}

.brand-subtitle {
  color: #aab4c5;
  font-size: 13px;
}

.nav {
  display: grid;
  gap: 6px;
}

.nav-link {
  color: #cdd5e1;
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 6px;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.session-box {
  margin-top: auto;
  color: #cdd5e1;
  font-size: 13px;
  line-height: 1.5;
}

.main {
  padding: 28px;
  display: grid;
  gap: 24px;
  align-content: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.panel-header {
  margin-bottom: 18px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 22px;
}

h2 {
  font-size: 16px;
  margin-bottom: 12px;
}

p {
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.5;
}

.grid.two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.form {
  display: grid;
  gap: 12px;
  max-width: 680px;
}

.form.compact {
  max-width: 780px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: #344054;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  font: inherit;
  color: var(--text);
  background: #fff;
}

textarea {
  resize: vertical;
}

button,
.button {
  border: 0;
  border-radius: 6px;
  padding: 10px 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
}

button:hover,
.button:hover {
  background: var(--accent-dark);
}

.button.secondary {
  background: #344054;
}

.toolbar {
  margin-bottom: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
  font-size: 14px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 10px 8px;
  vertical-align: top;
}

th {
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  background: #f8fafc;
}

.notice {
  margin-top: 12px;
  color: var(--muted);
}

.match-result {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.match-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  display: grid;
  gap: 6px;
}

.match-card strong {
  font-size: 15px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  display: grid;
  gap: 4px;
}

.metric span {
  font-size: 28px;
  font-weight: 700;
}

.metric label {
  color: var(--muted);
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  min-width: 240px;
  max-width: 420px;
  padding: 12px 14px;
  border-radius: 8px;
  background: #111827;
  color: #fff;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.error {
  color: var(--danger);
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: sticky;
    top: 0;
    z-index: 2;
  }

  .grid.two,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .main {
    padding: 16px;
  }
}