:root {
  color-scheme: light dark;
  --bg: #f6f6f4;
  --fg: #1d1d1b;
  --muted: #6b6b66;
  --surface: #ffffff;
  --border: #d9d9d4;
  --accent: #2f6f3e;
  --accent-fg: #ffffff;
  --danger: #a3261e;
  --running-bg: #dff0e2;
  --running-fg: #23562f;
  --stopped-bg: #ececea;
  --stopped-fg: #55554f;
  --busy-bg: #fdf0d5;
  --busy-fg: #7a5200;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a;
    --fg: #e8e8e4;
    --muted: #9a9a94;
    --surface: #202225;
    --border: #34363a;
    --accent: #4f9e63;
    --accent-fg: #0d0f0e;
    --danger: #d4675e;
    --running-bg: #213a28;
    --running-fg: #a6e0b5;
    --stopped-bg: #2a2c2f;
    --stopped-fg: #a8a8a2;
    --busy-bg: #3d3115;
    --busy-fg: #f0cd88;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
}

.user {
  display: flex;
  gap: 1rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.user form {
  margin: 0;
}

.user a {
  color: var(--accent);
}

main {
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem;
}

h1 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
}

.hint {
  color: var(--muted);
  margin: 0 0 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  overflow: hidden;
}

th,
td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
}

tbody tr:last-child td {
  border-bottom: none;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.actions form {
  margin: 0;
}

.badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge.running {
  background: var(--running-bg);
  color: var(--running-fg);
}

.badge.stopped {
  background: var(--stopped-bg);
  color: var(--stopped-fg);
}

/* starting / stopping: an action is in flight */
.badge.starting,
.badge.stopping {
  background: var(--busy-bg);
  color: var(--busy-fg);
}

.badge.starting::before,
.badge.stopping::before {
  content: "";
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.35rem;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-top-color: transparent;
  vertical-align: baseline;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .badge.starting::before,
  .badge.stopping::before {
    animation: none;
  }
}

[hidden] {
  display: none !important;
}

button {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  background: var(--surface);
  color: var(--fg);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

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

button.link {
  padding: 0;
  border: none;
  background: none;
  color: var(--muted);
  text-decoration: underline;
}

button[type="submit"]:not(.link):not(.danger) {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}

.messages {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: grid;
  gap: 0.5rem;
}

.message {
  padding: 0.6rem 0.8rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border);
  background: var(--surface);
}

.message.success {
  border-color: var(--running-fg);
}

.message.error {
  border-color: var(--danger);
  color: var(--danger);
}

form.create,
form.login {
  display: grid;
  gap: 0.75rem;
  max-width: 24rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

label {
  display: grid;
  gap: 0.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

input,
select {
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  font-size: 1rem;
}

form.create button,
form.login button {
  justify-self: start;
}