:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --text: #18202b;
  --muted: #5d6b7a;
  --line: #d8dee7;
  --panel: #ffffff;
  --primary: #0f766e;
  --primary-dark: #0b5f59;
  --danger: #b42318;
  --danger-bg: #fff1f0;
}

* {
  box-sizing: border-box;
}

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

.shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 32px auto;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  font-weight: 720;
}

h2 {
  font-size: 18px;
  margin-bottom: 18px;
}

p {
  color: var(--muted);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.panel,
.login {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 18px;
}

.login {
  width: min(420px, 100%);
  margin: 14vh auto 0;
  display: grid;
  gap: 18px;
}

.start-form {
  display: grid;
  grid-template-columns: 1.1fr 0.8fr 1fr auto;
  align-items: end;
  gap: 14px;
}

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

input,
select {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  color: var(--text);
  background: white;
  font: inherit;
}

.button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 14px;
  background: white;
  color: var(--text);
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

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

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

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-top: 1px solid var(--line);
  padding: 12px 10px;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 0 10px;
  background: #edf4ff;
  color: #164a8b;
  font-size: 13px;
  font-weight: 700;
}

.status.ready {
  background: #e8f7ef;
  color: #126b3a;
}

.status.stopping,
.status.failed {
  background: #fff1f0;
  color: #b42318;
}

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

.notice {
  color: var(--danger);
}

.session-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 24px;
}

dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px 18px;
  margin: 0 0 20px;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.qr-box {
  display: grid;
  place-items: center;
  gap: 14px;
  min-height: 360px;
  border: 1px dashed var(--line);
  border-radius: 8px;
}

.qr-box img {
  width: min(320px, 100%);
  height: auto;
}

@media (max-width: 780px) {
  .toolbar,
  .start-form,
  .session-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  table {
    display: block;
    overflow-x: auto;
  }
}