:root {
  --bg: #f6f8fa;
  --text: #17212b;
  --line: #dde4ea;
}

* {
  box-sizing: border-box;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 40px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--text);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.login-button {
  min-width: 76px;
  border-radius: 4px;
  font-weight: 700;
}

.login-button:disabled {
  background: #64707c;
  cursor: default;
}

.page-placeholder {
  width: min(1120px, calc(100% - 40px));
  min-height: calc(100vh - 65px);
  margin: 0 auto;
  padding: 32px 0;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 360px) minmax(0, 1fr);
  gap: 24px;
}

.tool-panel,
.empty-panel {
  min-height: 420px;
  background: #ffffff;
  border: 1px solid var(--line);
}

.tool-panel {
  padding: 20px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.info-row span {
  color: #64707c;
}

.info-row strong {
  overflow-wrap: anywhere;
}

.time-tool {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.field-group {
  display: grid;
  gap: 8px;
}

.field-group label {
  font-size: 14px;
  font-weight: 700;
}

.control-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

input,
textarea,
button {
  border: 1px solid var(--line);
  font: inherit;
}

input {
  min-height: 38px;
  min-width: 0;
  padding: 0 10px;
}

textarea {
  min-width: 0;
  padding: 8px 10px;
  resize: vertical;
}

button {
  min-height: 38px;
  padding: 0 12px;
  color: #ffffff;
  background: #147a4d;
  cursor: pointer;
}

output {
  min-height: 24px;
  color: #64707c;
  font-size: 14px;
  overflow-wrap: anywhere;
}

#qrCanvas {
  width: min(100%, 232px);
  height: auto;
  border: 1px solid var(--line);
}

.login-dialog {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(23, 33, 43, .38);
}

.login-dialog[hidden] {
  display: none;
}

.login-panel {
  display: grid;
  gap: 14px;
  width: min(100%, 320px);
  padding: 18px;
  background: #ffffff;
  border: 1px solid var(--line);
}

.login-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.login-panel h2 {
  margin: 0;
  font-size: 18px;
}

.plain-button {
  min-height: 32px;
  color: #17212b;
  background: #ffffff;
}

.wechat-code {
  width: 220px;
  height: 220px;
  justify-self: center;
  object-fit: contain;
  border: 1px solid var(--line);
}

.manager-page {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0;
}

.manager-panel {
  display: grid;
  gap: 18px;
  padding: 20px;
  background: #ffffff;
  border: 1px solid var(--line);
}

.manager-panel h1,
.manager-panel h2,
.manager-panel p {
  margin: 0;
}

.manager-panel h1 {
  font-size: 22px;
}

.manager-panel h2 {
  font-size: 16px;
}

.manager-warning,
.manager-alert {
  padding: 10px 12px;
  border: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
}

.manager-warning {
  background: #fff7e6;
}

.manager-alert-error {
  color: #8a1f1f;
  background: #fff1f1;
}

.manager-alert-ok {
  color: #145c3b;
  background: #edf8f2;
}

.manager-login-form,
.sql-form,
.sql-examples,
.sql-result {
  display: grid;
  gap: 10px;
}

.manager-login-form {
  max-width: 360px;
}

.sql-form textarea {
  min-height: 240px;
  font-family: Consolas, Monaco, monospace;
}

.sql-examples pre {
  margin: 0;
  padding: 12px;
  overflow-x: auto;
  background: #f6f8fa;
  border: 1px solid var(--line);
  font-family: Consolas, Monaco, monospace;
  font-size: 13px;
  line-height: 1.5;
}

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

.sql-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.sql-table th,
.sql-table td {
  max-width: 360px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

.sql-table th {
  background: #f6f8fa;
}

@media (max-width: 560px) {
  .site-header {
    padding: 0 20px;
  }

  .page-placeholder,
  .manager-page {
    width: min(100% - 28px, 1120px);
  }

  .tool-layout {
    grid-template-columns: 1fr;
  }

  .empty-panel {
    min-height: 220px;
  }

  .control-row {
    grid-template-columns: 1fr;
  }
}