:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #65758b;
  --line: #d9e0ea;
  --primary: #1769e0;
  --primary-dark: #1153b3;
  --danger: #c73535;
}

* {
  box-sizing: border-box;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: #102033;
  color: #fff;
}

.topbar h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.topbar span {
  color: #b8c5d8;
  font-size: 13px;
}

main {
  padding: 24px;
}

.layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

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

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

h2 {
  margin: 0 0 16px;
  font-size: 18px;
}

.section-head h2 {
  margin: 0;
}

.route-item {
  display: block;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: inherit;
  text-decoration: none;
  margin-bottom: 10px;
}

.route-item.active {
  border-color: var(--primary);
  background: #eef5ff;
}

.route-item strong,
.route-item span,
.route-item em {
  display: block;
}

.route-item span {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
  word-break: break-all;
}

.route-item em {
  color: var(--primary-dark);
  font-size: 12px;
  font-style: normal;
  margin-top: 6px;
}

label {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 14px;
}

input,
textarea {
  display: block;
  width: 100%;
  margin-top: 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  color: var(--text);
  font: inherit;
}

textarea {
  resize: vertical;
}

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

.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 4px 0 18px;
}

.checks label {
  margin: 0;
  color: var(--text);
}

.checks input {
  display: inline;
  width: auto;
  margin: 0 6px 0 0;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 0;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  padding: 0 16px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

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

.light,
.ghost {
  background: #e9eef6;
  color: #203047;
}

.light:hover,
.ghost:hover {
  background: #dce5f1;
}

.danger {
  background: var(--danger);
}

.actions,
.delete-form {
  margin-top: 16px;
}

.login-panel {
  min-height: calc(100vh - 110px);
  display: grid;
  place-items: center;
}

.login-panel .panel {
  width: min(420px, 100%);
}

.error {
  color: var(--danger);
  margin: 0 0 12px;
}

.empty {
  color: var(--muted);
}

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

  main {
    padding: 14px;
  }
}