:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --term-bg: #0d0d0d;
  --term-border: #2a2a2a;
  --text: #c9d1d9;
  --dim: #6e7681;
  --prompt: #3fb950;
  --accent: #58a6ff;
  --warn: #d29922;
  --err: #f85149;
  --ok: #3fb950;
  --led-on: #3fb950;
  --gpio-hi: #d29922;
  --mono: "SF Mono", "Cascadia Code", "Fira Code", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

kbd {
  font: inherit;
  padding: 0 0.3em;
  border: 1px solid var(--term-border);
  border-radius: 3px;
  background: #161b22;
}

.dim { color: var(--dim); }
.err { color: var(--err); }
.ok { color: var(--ok); }
.warn { color: var(--warn); }

/* ── terminal window ── */

.term-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.term-window {
  width: min(960px, 100%);
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.term-window:fullscreen {
  width: 100%;
  height: 100%;
  border-radius: 0;
  border: 0;
  display: flex;
  flex-direction: column;
}

.term-window:fullscreen .term-body {
  flex: 1;
  overflow: auto;
}

.auth-term {
  max-width: 420px;
}

.term-chrome {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.85rem;
  background: #161b22;
  border-bottom: 1px solid var(--term-border);
}

.dot {
  width: 12px;
  height: 12px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  flex-shrink: 0;
  cursor: pointer;
  appearance: none;
}
.dot.red { background: #ff5f57; }
.dot.green { background: #28c840; }
.dot.idle,
.dot.idle:disabled {
  background: #2a2a2a;
  cursor: default;
  pointer-events: none;
}
.dot.red:hover { filter: brightness(1.12); }
.dot.green:hover { filter: brightness(1.12); }
.dot:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.term-title {
  margin-left: 0.35rem;
  font-size: 12px;
  color: var(--dim);
}

.term-badge {
  margin-left: 0.5rem;
  padding: 0.1rem 0.4rem;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ok);
  border: 1px solid #238636;
  border-radius: 4px;
}

.term-link {
  margin-left: auto;
  font-size: 11px;
  color: var(--dim);
}

.term-body {
  padding: 1rem 1.1rem 1.1rem;
}

.term-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .term-grid {
    grid-template-columns: 1fr minmax(180px, 220px);
    align-items: start;
  }
}

.term-pane { min-width: 0; }

/* ── log ── */

.term-log {
  min-height: 8rem;
  max-height: 14rem;
  overflow-y: auto;
  margin-bottom: 0.75rem;
  padding-right: 0.25rem;
}

.term-log::-webkit-scrollbar { width: 6px; }
.term-log::-webkit-scrollbar-thumb { background: #30363d; border-radius: 3px; }

.term-line {
  margin: 0 0 0.15rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.term-line .prompt { color: var(--prompt); margin-right: 0.4em; }

.term-status { display: none; }

/* ── command line ── */

.term-cmdline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--term-border);
}

.prompt {
  color: var(--prompt);
  flex-shrink: 0;
}

.term-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  flex: 1;
}

.term-hint {
  margin-left: auto;
  font-size: 11px;
  color: var(--dim);
}

.term-btn {
  font: inherit;
  font-size: 12px;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--term-border);
  border-radius: 4px;
  background: #161b22;
  color: var(--text);
  cursor: pointer;
}

.term-btn:hover:not(:disabled) {
  border-color: var(--dim);
  background: #1c2128;
}

.term-btn.primary {
  border-color: #238636;
  color: var(--ok);
}

.term-btn.primary:hover:not(:disabled) {
  background: #122117;
}

.term-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ── metrics readout ── */

.term-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0.85rem 0 0.5rem;
  padding: 0.5rem 0.65rem;
  background: #161b22;
  border: 1px solid var(--term-border);
  border-radius: 4px;
  font-size: 12px;
}

.readout-item span:last-child {
  color: var(--accent);
}

#metric-led.on { color: var(--ok); }
#metric-led.off { color: var(--dim); }

/* ── gpio ── */

.gpio-panel { margin-top: 0.5rem; }

.gpio-panel .term-line { margin-bottom: 0.25rem; font-size: 11px; }

.gpio-readout {
  margin: 0;
  padding: 0.5rem 0.65rem;
  background: #161b22;
  border: 1px solid var(--term-border);
  border-radius: 4px;
  font: inherit;
  font-size: 11px;
  line-height: 1.6;
  color: var(--text);
  overflow-x: auto;
}

.gpio-readout .hi { color: var(--gpio-hi); }
.gpio-readout .led-hi { color: var(--led-on); }

/* ── board preview ── */

.board-label { font-size: 11px; margin-bottom: 0.35rem; }

.board-wrap {
  --board-w: 389;
  --board-h: 642;
  --led-x: 112;
  --led-y: 282;
  --led-w: 15;
  --led-h: 5;
  --btn-x: 164;
  --btn-y: 210;
  --btn-w: 51;
  --btn-h: 52;
  position: relative;
  display: block;
  margin: 0 auto;
  width: 100%;
  background: #fff;
  border: 1px solid var(--term-border);
  border-radius: 4px;
  overflow: hidden;
}

#board-art {
  display: block;
  width: 100%;
  height: auto;
  user-select: none;
}

.led {
  position: absolute;
  left: calc(var(--led-x) / var(--board-w) * 100%);
  top: calc(var(--led-y) / var(--board-h) * 100%);
  width: calc(var(--led-w) / var(--board-w) * 100%);
  height: calc(var(--led-h) / var(--board-h) * 100%);
  pointer-events: none;
  transition: background 0.04s linear, box-shadow 0.04s linear;
}

.led.on {
  background: var(--led-on);
  box-shadow: 0 0 6px 1px var(--led-on);
  margin-top: -1px;
  height: calc((var(--led-h) + 2) / var(--board-h) * 100%);
}

.pin-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.pin-dot {
  position: absolute;
  box-sizing: border-box;
  border: 1px solid #fff;
  background: #050505;
  transition: background 0.04s linear;
}

.pin-dot.on { background: var(--gpio-hi); }
.pin-dot.led-pin.on {
  background: var(--led-on);
  box-shadow: 0 0 3px 1px var(--led-on);
}

.boot-btn {
  position: absolute;
  left: calc(var(--btn-x) / var(--board-w) * 100%);
  top: calc(var(--btn-y) / var(--board-h) * 100%);
  width: calc(var(--btn-w) / var(--board-w) * 100%);
  height: calc(var(--btn-h) / var(--board-h) * 100%);
  opacity: 0;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  background: transparent;
}

.boot-btn.pressed {
  opacity: 1;
  box-shadow: inset 0 0 0 2px var(--ok);
  background: rgba(35, 134, 54, 0.25);
}

/* ── embed (iframe) ── */

body.embed .term-shell { padding: 0.5rem; min-height: auto; }
body.embed .term-link,
body.embed .term-readout,
body.embed .gpio-panel,
body.embed .term-log-pane .term-cmdline { display: none; }
body.embed .term-grid { grid-template-columns: 1fr; }
body.embed .term-log { max-height: 4rem; min-height: 2rem; }

/* ── auth gate ── */

.auth-gate:not([hidden]) {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.auth-gate[hidden] { display: none !important; }

.auth-term .term-btn {
  width: 100%;
  margin: 0.75rem 0;
  padding: 0.55rem;
}