:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --line: #d9dee7;
  --text: #1e2430;
  --muted: #687386;
  --accent: #1769aa;
  --danger: #b3261e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 56px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 700;
  color: var(--text);
}

.topbar nav {
  display: flex;
  gap: 12px;
  flex: 1;
}

.topbar nav a {
  color: var(--muted);
}

.topbar nav a.active {
  color: var(--text);
  font-weight: 600;
}

.logout {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
}

.auth-panel {
  max-width: 360px;
  margin: 80px auto;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.summary > div,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.summary strong {
  display: block;
  margin-top: 4px;
  font-size: 22px;
}

.label,
.muted {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

h1,
h2 {
  margin: 0 0 12px;
}

.section-head h1 {
  margin-bottom: 0;
}

.panel {
  margin-bottom: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
}

th,
td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

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

.right {
  text-align: right;
}

.form-grid {
  display: grid;
  gap: 12px;
}

.form-grid.columns {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.form-grid label {
  display: grid;
  gap: 6px;
  color: var(--muted);
}

.wide {
  grid-column: span 2;
}

input,
select,
button,
.button {
  min-height: 36px;
  border-radius: 6px;
  font: inherit;
}

input,
select {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

button:hover,
.button:hover {
  text-decoration: none;
  filter: brightness(0.95);
}

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

.inline-form {
  display: inline-grid;
  grid-template-columns: 88px auto;
  gap: 6px;
  align-items: center;
}

.error {
  padding: 10px 12px;
  border: 1px solid #f0b8b4;
  background: #fff1f0;
  color: var(--danger);
  border-radius: 6px;
}

@media (max-width: 800px) {
  .topbar,
  .split,
  .summary,
  .form-grid.columns {
    display: block;
  }

  .topbar {
    padding: 12px;
  }

  .topbar nav,
  .logout,
  .summary > div {
    margin-top: 10px;
  }
}