:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.18);
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --good: #10b981;
  --warn: #f59e0b;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

a {
  color: #93c5fd;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

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

.footnote {
  font-size: 0.9rem;
  margin-top: 1rem;
}

.error {
  color: #fca5a5;
  font-weight: 500;
}

/* --- Landing / login --- */
body.landing {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  max-width: 560px;
  width: 100%;
  box-shadow: var(--shadow);
}

.card h1,
.card h2 {
  margin-top: 0;
}

.card .actions {
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0 1rem;
}

label {
  display: grid;
  gap: 0.35rem;
  margin: 1rem 0;
}

label > span:first-child {
  font-weight: 500;
}

input[type='password'],
input[type='text'],
select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  font-size: 1rem;
  width: 100%;
}

input[type='range'] {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.7rem 1rem;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
}
.btn:hover:not(:disabled) {
  background: #2b384c;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn.primary {
  background: var(--primary);
  border-color: transparent;
}
.btn.primary:hover:not(:disabled) {
  background: var(--primary-hover);
}
.btn.danger {
  background: var(--danger);
  border-color: transparent;
}
.btn.danger:hover:not(:disabled) {
  background: var(--danger-hover);
}
.btn.big-btn {
  padding: 1.2rem 1.5rem;
  font-size: 1.15rem;
}

.link {
  background: transparent;
  border: 0;
  color: #93c5fd;
  cursor: pointer;
  font-size: 0.95rem;
  padding: 0;
}
.link:hover {
  text-decoration: underline;
}

/* --- App layout --- */
body.app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  gap: 1rem;
  flex-wrap: wrap;
}
.topbar strong {
  margin-right: 0.5rem;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pill {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.85rem;
}

.main {
  padding: 1.25rem;
  display: grid;
  gap: 1.25rem;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 880px) {
  .main.two-col {
    grid-template-columns: 1fr 1fr;
  }
  .main.two-col .wide {
    grid-column: 1 / -1;
  }
}

.row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0.75rem 0;
}
.row.center {
  justify-content: center;
}

.centerblock {
  text-align: center;
}
.centerblock h2 {
  font-size: 1.6rem;
}

/* --- Meter --- */
.meter-wrap {
  margin-top: 1rem;
}
.meter {
  position: relative;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(
    to right,
    rgba(220, 38, 38, 0.35) 0%,
    rgba(245, 158, 11, 0.35) 30%,
    rgba(16, 185, 129, 0.35) 60%,
    rgba(16, 185, 129, 0.35) 100%
  );
  overflow: hidden;
  border: 1px solid var(--border);
}
.meter-fill {
  position: absolute;
  inset: 0 100% 0 0;
  background: linear-gradient(
    to right,
    var(--danger),
    var(--warn) 40%,
    var(--good) 70%
  );
  transition: right 60ms linear;
}
.meter-threshold {
  position: absolute;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: #f8fafc;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.4);
  left: 0;
}
.meter-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.25rem;
}
.meter-readout {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 0.5rem;
}
.big {
  font-size: 2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* --- Log --- */
.log {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 280px;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88rem;
}
.log li {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
}
.log li:last-child {
  border-bottom: 0;
}
.log time {
  color: var(--muted);
  flex-shrink: 0;
}
.log .lvl-warn {
  color: var(--warn);
}
.log .lvl-danger {
  color: #fca5a5;
}
.log .lvl-good {
  color: #6ee7b7;
}

/* --- Settings page --- */
.steps {
  margin: 0.5rem 0 1.25rem 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}
.steps code {
  background: var(--panel-2);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  font-size: 0.92em;
}

.input-row {
  display: flex;
  gap: 0.5rem;
}
.input-row input {
  flex: 1;
}

.botinfo {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin: 0.5rem 0 1rem;
}

.chat-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: grid;
  gap: 0.5rem;
}
.chat-list .empty {
  padding: 0.5rem 0.25rem;
}
.chat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.chat-row .small {
  font-size: 0.85rem;
}

.status {
  margin: 0.5rem 0;
  padding: 0.6rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
}
.status.good {
  border-color: rgba(16, 185, 129, 0.45);
  background: rgba(16, 185, 129, 0.12);
}
.status.warn {
  border-color: rgba(245, 158, 11, 0.45);
  background: rgba(245, 158, 11, 0.12);
}
.status.danger {
  border-color: rgba(220, 38, 38, 0.55);
  background: rgba(220, 38, 38, 0.15);
}

.kv {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

/* --- Listener alarm state --- */
body.listener {
  transition: background-color 200ms ease;
}
body.listener.alarm-active {
  background: #450a0a;
  animation: flashbg 700ms steps(1, end) infinite alternate;
}
@keyframes flashbg {
  from {
    background: #450a0a;
  }
  to {
    background: #7f1d1d;
  }
}
body.listener.alarm-active .card {
  border-color: #ef4444;
}
body.listener.alarm-active #bigState {
  color: #fecaca;
}