:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --line: #dfe3e8;
  --text: #1f2933;
  --muted: #667085;
  --accent: #2563eb;
  --danger: #c2410c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  padding: 9px 14px;
  cursor: pointer;
}

button.secondary {
  background: #eef2ff;
  color: #1d4ed8;
}

button.danger {
  background: #fff1f2;
  color: var(--danger);
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  background: #fff;
}

.hidden {
  display: none !important;
}

.login-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(380px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 16px 38px rgba(31, 41, 51, 0.08);
}

.login-panel h1 {
  margin: 0 0 22px;
  font-size: 24px;
}

.login-panel label,
.form-panel label {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--muted);
}

.login-panel button {
  width: 100%;
}

.error {
  min-height: 20px;
  color: var(--danger);
}

.app-view {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 220px 1fr;
}

.sidebar {
  background: #111827;
  color: #fff;
  padding: 18px 12px;
}

.brand {
  padding: 8px 10px 18px;
  font-weight: 700;
}

.nav,
.logout {
  width: 100%;
  margin: 4px 0;
  text-align: left;
  background: transparent;
  color: #d1d5db;
}

.nav.active,
.nav:hover {
  background: #263244;
  color: #fff;
}

.logout {
  margin-top: 28px;
  color: #fca5a5;
}

.content {
  min-width: 0;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.topbar h2 {
  margin: 0;
  font-size: 24px;
}

.message {
  margin-bottom: 14px;
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: #1d4ed8;
  padding: 10px 12px;
  border-radius: 6px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.card strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 360px) auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 14px;
}

.table-wrap {
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 860px;
}

th,
td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  background: #f9fafb;
}

td.actions {
  white-space: nowrap;
}

.form-panel {
  max-width: 520px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

dialog {
  width: min(860px, calc(100vw - 32px));
  max-height: calc(100vh - 40px);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
}

.dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.dialog-head h3 {
  margin: 0;
}

.icon-btn {
  width: 34px;
  height: 34px;
  padding: 0;
  background: #f3f4f6;
  color: var(--text);
}

pre {
  margin: 0;
  padding: 18px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 760px) {
  .app-view {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

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

  .toolbar {
    grid-template-columns: 1fr;
  }
}