:root {
  --bg: #f3f5f7;
  --card: #ffffff;
  --text: #142033;
  --muted: #667085;
  --line: #d7dee8;
  --primary: #165dff;
  --danger: #d92d20;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #edf3ff 0%, var(--bg) 45%);
  color: var(--text);
}

.page {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px;
}

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

h1 {
  margin: 0;
  font-size: 24px;
}

h2 {
  margin: 0 0 14px;
  font-size: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-top: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.grid .full {
  grid-column: 1 / -1;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

input,
select,
textarea {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
}

textarea {
  width: 100%;
}

.actions {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  font-weight: 700;
}

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

.btn.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.stat-box {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #fbfdff;
}

.stat-box .label {
  font-size: 12px;
  color: var(--muted);
}

.stat-box .value {
  margin-top: 4px;
  font-size: 22px;
  font-weight: 800;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

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

th,
td {
  padding: 10px;
  border-bottom: 1px solid #eef2f6;
  text-align: left;
  white-space: nowrap;
}

.msg {
  min-height: 20px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .grid,
  .stats {
    grid-template-columns: 1fr;
  }
}