:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2d3d;
  --muted: #5f6b7a;
  --line: #e6ebf2;
  --primary: #1677ff;
  --danger: #ff4d4f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 16px 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.login-card {
  max-width: 460px;
  margin: 80px auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dashboard {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hidden {
  display: none !important;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-actions {
  display: flex;
  gap: 8px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.actions-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

label {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

input {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  min-height: 36px;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 8px 12px;
  cursor: pointer;
}

button.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

button.danger {
  border-color: var(--danger);
  color: var(--danger);
}

.muted {
  color: var(--muted);
  margin: 0;
}

.msg {
  min-height: 20px;
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 8px;
  font-size: 13px;
  vertical-align: top;
}

th {
  background: #fafcff;
  color: #415266;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: 1fr;
  }
}