:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --ink: #17202a;
  --muted: #647282;
  --line: #d8dde5;
  --panel: #ffffff;
  --accent: #0b6bcb;
  --ok: #16784a;
  --bad: #b02a37;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px 12px;
}

h1, h2, p { margin: 0; }
h1 { font-size: 28px; }
h2 { font-size: 18px; margin-bottom: 14px; }
p { color: var(--muted); }

button, input, select {
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 11px;
  background: white;
}

button {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  cursor: pointer;
  white-space: nowrap;
}

button:hover { filter: brightness(0.95); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
}

.hidden { display: none !important; }

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.login .panel {
  width: min(420px, calc(100vw - 32px));
  display: grid;
  gap: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 8px 22px rgba(20, 30, 45, 0.04);
}

.toolbar {
  margin: 12px 32px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
}

.grid {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(280px, 1fr);
  gap: 18px;
  margin: 0 32px 18px;
}

#dashboard > .panel {
  margin: 0 32px 18px;
}

.status-line {
  min-height: 20px;
  margin: -10px 32px 14px;
  color: var(--muted);
}

.compact-form {
  display: grid;
  gap: 12px;
  align-content: start;
}

.compact-form .status-line {
  margin: 0;
}

.device-card, .message-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.badge {
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  color: white;
  background: var(--muted);
  align-self: start;
}
.badge.ok { background: var(--ok); }
.badge.bad { background: var(--bad); }
.badge.free { background: var(--ok); }
.badge.occupied { background: #b26a00; }
.badge.cash { background: #3f638a; }
.badge.unknown { background: var(--muted); }

.device-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 6px;
}

#rawMessages {
  max-height: 260px;
  overflow-y: auto;
  border-top: 1px solid var(--line);
}

#rawMessages .message-row:first-child {
  border-top: 0;
}

.message-row p {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42vw;
}

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 10px 8px;
  border-top: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
}
th { color: var(--muted); font-weight: 600; }

#loginError { color: var(--bad); min-height: 20px; }

@media (max-width: 760px) {
  header { padding: 18px 16px 10px; }
  .toolbar, .grid, #dashboard > .panel, .status-line { margin-left: 16px; margin-right: 16px; }
  .grid { grid-template-columns: 1fr; }
  table { display: block; overflow-x: auto; }
}