:root {
  --bg: #0b0e14;
  --panel: #161b22;
  --panel-2: #1f2630;
  --text: #e6edf3;
  --muted: #8b97a7;
  --accent: #4cc38a;
  --danger: #ef5455;
  --warn: #d6a64a;
  --border: #2a3340;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
               "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 18px;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
}

.rig {
  max-width: 720px;
  margin: 0 auto;
  padding: max(env(safe-area-inset-top), 24px) 24px
          max(env(safe-area-inset-bottom), 24px) 24px;
  display: grid;
  gap: 20px;
}

.rig__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.rig__header h1 {
  font-size: 28px;
  margin: 0;
  letter-spacing: -0.01em;
}

.rig__pill {
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.rig__pill--ok    { color: var(--accent); border-color: rgba(76,195,138,0.4); }
.rig__pill--err   { color: var(--danger); border-color: rgba(239,84,85,0.4); }
.rig__pill--warn  { color: var(--warn);   border-color: rgba(214,166,74,0.4); }

.rig__state, .rig__progress, .rig__controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.rig__progress h2 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.rig__state-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.rig__state-row:last-child { border-bottom: none; }

.rig__label {
  color: var(--muted);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.rig__value {
  font-variant-numeric: tabular-nums;
  font-size: 20px;
}

.rig__value--big {
  font-size: 28px;
  font-weight: 600;
}

.rig__input {
  width: 100%;
  margin: 8px 0 16px;
  padding: 14px 16px;
  font-size: 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  user-select: text;
}
.rig__input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.rig__buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.rig__btn {
  appearance: none;
  border: none;
  border-radius: 14px;
  padding: 22px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #0b0e14;
  cursor: pointer;
  transition: transform 0.05s ease, opacity 0.15s ease;
  min-height: 72px;
}
.rig__btn:active:not(:disabled) { transform: scale(0.98); }
.rig__btn:disabled { opacity: 0.4; cursor: not-allowed; }

.rig__btn--start { background: var(--accent); }
.rig__btn--stop  { background: var(--danger); color: #fff; }

.rig__error {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(239,84,85,0.12);
  border: 1px solid rgba(239,84,85,0.4);
  color: var(--danger);
  font-size: 15px;
}

.rig__payload {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 20px;
}

.rig__payload summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.rig__payload summary::-webkit-details-marker { display: none; }

.rig__payload-pre {
  margin: 14px 0 0;
  padding: 14px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font: 13px / 1.5 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
  user-select: text;
  -webkit-user-select: text;
}

@media (min-width: 760px) {
  .rig {
    grid-template-columns: 1fr 1fr;
  }
  .rig__header, .rig__controls, .rig__payload { grid-column: 1 / -1; }
}