:root {
  --bg: #1e1e1e;
  --surface: #252526;
  --surface-muted: #2a2a2b;
  --surface-header: #2d2d30;
  --surface-soft: #1f1f20;
  --surface-soft-2: #2a2a2b;

  --text: #d4d4d4;
  --text-muted: #a9adb3;

  --accent: #0e639c;
  --accent-soft: #1177bb;
  --accent-muted: #264f78;
  --ok: #22c55e;
  --bad: #ef4444;
  --warn: #f59e0b;

  --border-strong: #4d4d4d;
  --border: #3c3c3c;
  --border-soft: #343436;

  --button-primary-bg: #0e639c;
  --button-primary-bg-hover: #1177bb;
  --button-secondary-bg: #33363a;
  --button-secondary-bg-hover: #3f4349;
  --button-border: #2f5f8f;

  --pill-bg: #323234;
  --pill-border: #5e6166;
  --pill-connected-bg: #1f2c23;
  --pill-connected-border: #407a4d;
  --pill-disconnected-bg: #342325;
  --pill-disconnected-border: #8d4f56;

  --led-off-bg: #303033;
  --led-off-border: #5b5d62;
  --led-on-bg: #2a9d58;
  --led-on-border: #5ccd88;
  --led-group-bg: #242427;
  --led-group-border: #4f5258;

  --seg-off-bg: #3a3b3f;
  --seg-on-bg: #f59e0b;

  --toggle-off-bg: #3a3d41;
  --toggle-off-knob: #c4c7cc;
  --toggle-on-bg: #2f7d4d;
  --toggle-on-knob: #7be8a5;

  --momentary-bg: #373a3e;
  --momentary-border: #60646b;
  --momentary-down-bg: #365a7f;
  --momentary-down-border: #5f8fc0;
  --keypad-op-bg: #44484f;
  --transparent: transparent;
  --card-shadow: 0 10px 18px rgba(0, 0, 0, 0.35);

  --radius: 14px;
  --radius-sm: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
}

button {
  padding: 8px 12px;
  border: 1px solid var(--button-border);
  border-radius: var(--radius-sm);
  background: var(--button-primary-bg);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}

button:hover {
  background: var(--button-primary-bg-hover);
}

button:active {
  transform: translateY(1px);
}

button.secondary {
  background: var(--button-secondary-bg);
}

button.secondary:hover {
  background: var(--button-secondary-bg-hover);
}

button:focus-visible {
  outline: 1px solid var(--accent-soft);
  outline-offset: 1px;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

textarea {
  width: 100%;
  height: 100%;
  padding: 12px;
  border: 0;
  outline: none;
  resize: none;
  color: var(--text);
  background: var(--surface-soft);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.35;
}

.muted {
  font-size: 12px;
  color: var(--text-muted);
}

.is-hidden {
  display: none !important;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 14px;
  padding: 14px;
}

.card {
  flex: 1 1 520px;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--card-shadow);
}

.cardHeader {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--surface-header);
}

.cardHeaderWrap {
  flex-wrap: wrap;
}

.cardTitle {
  font-weight: 700;
}

.cardActions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.panelTopStatus {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex-wrap: nowrap;
  white-space: nowrap;
  min-width: 0;
  flex: 0 0 auto;
}

.pill {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 6px 10px;
  font-size: 12px;
  border: 1px solid var(--pill-border);
  border-radius: 999px;
  background: var(--pill-bg);
  min-width: 104px;
}

.pill.state-disabled {
  border-color: var(--pill-disconnected-border);
  background: var(--pill-disconnected-bg);
}

.pill.state-connected {
  border-color: color-mix(in srgb, var(--accent-soft) 75%, white 25%);
  background: color-mix(in srgb, var(--accent-muted) 72%, black 28%);
}

.pill.state-running {
  border-color: var(--pill-connected-border);
  background: var(--pill-connected-bg);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--ok) 40%, transparent);
}

.modeToggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  user-select: none;
  flex: 0 0 auto;
}

.modeToggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.modeSlider {
  width: 36px;
  height: 18px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--toggle-off-bg);
  position: relative;
}

.modeSlider::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 1px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--toggle-off-knob);
  transition: transform 0.12s ease, background 0.12s ease;
}

.modeToggle input:checked + .modeSlider {
  background: var(--accent-muted);
}

.modeToggle input:checked + .modeSlider::after {
  transform: translateX(17px);
  background: var(--accent-soft);
}

.blockTitle {
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.subBlockTitle {
  margin: 10px 0 8px;
  font-size: 11px;
  color: var(--text-muted);
}

.hint {
  padding: 10px 12px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: 12px;
  background: var(--surface-soft-2);
}

.editor {
  display: flex;
  flex-direction: column;
  min-height: 420px;
  flex: 1.4 1 620px;
}

.editorWrap {
  display: flex;
  width: 100%;
  height: 100%;
  min-height: 0;
  background: var(--surface-soft);
}

.lineGutter {
  width: 54px;
  margin: 0;
  padding: 12px 10px 12px 12px;
  overflow: hidden;
  user-select: none;
  text-align: right;
  border-right: 1px solid var(--border-soft);
  color: var(--text-muted);
  background: var(--surface-soft-2);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.35;
}

textarea#vhdlEditor {
  flex: 1;
  overflow: auto;
  overscroll-behavior-y: none;
  background: var(--transparent);
}

.io .outputs {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 12px;
}

.ledRow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.ledGroup {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 6px;
  padding: 8px;
  border: 1px solid var(--led-group-border);
  border-radius: 8px;
  background: var(--led-group-bg);
}

.led {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  border: 1px solid var(--led-off-border);
  border-radius: 999px;
  background: var(--led-off-bg);
  aspect-ratio: 1 / 1;
}

.led::after {
  content: attr(data-bit);
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 8px;
  line-height: 1;
}

.led.on {
  border-color: var(--led-on-border);
  background: var(--led-on-bg);
  box-shadow: 0 0 6px color-mix(in srgb, var(--led-on-bg) 50%, transparent);
}

.hexRow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  overflow-x: hidden;
}

.hexGroup {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 4px;
  width: 100%;
  padding: 6px;
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  background: var(--surface-muted);
}

.hexDigitWrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
}

.sevenSeg {
  position: relative;
  width: 100%;
  max-width: 88px;
  aspect-ratio: 88 / 136;
  padding: 8%;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--surface-soft);
}

.seg {
  position: absolute;
  border-radius: 6px;
  background: var(--seg-off-bg);
}

.seg.on {
  background: var(--seg-on-bg);
  box-shadow: 0 0 4px color-mix(in srgb, var(--seg-on-bg) 45%, transparent);
}

.seg.a { top: 8%; left: 21%; width: 58%; height: 7%; }
.seg.b { top: 14%; right: 11%; width: 10%; height: 34%; }
.seg.c { bottom: 14%; right: 11%; width: 10%; height: 34%; }
.seg.d { bottom: 8%; left: 21%; width: 58%; height: 7%; }
.seg.e { bottom: 14%; left: 11%; width: 10%; height: 34%; }
.seg.f { top: 14%; left: 11%; width: 10%; height: 34%; }
.seg.g { top: 46.5%; left: 21%; width: 58%; height: 7%; }
.seg.dp {
  right: 5%;
  bottom: 5%;
  width: 9%;
  height: 9%;
  border-radius: 999px;
}

.digitLabel {
  margin-top: 4px;
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 10px;
}

.inputs {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1.2 1 560px;
}

.twoCols {
  display: grid;
  gap: 12px;
  min-height: 0;
  padding: 12px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.ioGrid {
  display: grid;
  gap: 6px;
  grid-template-columns: repeat(auto-fit, minmax(64px, 1fr));
}

.ioCell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 64px;
  min-height: 52px;
  padding: 6px 4px;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  background: var(--surface-soft);
}

.ioCell label {
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 11px;
}

.toggle {
  position: relative;
  width: 34px;
  height: 20px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--toggle-off-bg);
  cursor: pointer;
}

.toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: var(--toggle-off-knob);
  transition: left 0.12s ease, background 0.12s ease;
}

.toggle.on {
  background: var(--toggle-on-bg);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--toggle-on-knob) 35%, transparent);
}

.toggle.on::after {
  left: 16px;
  background: var(--toggle-on-knob);
}

.momentary {
  width: 34px;
  height: 24px;
  border: 1px solid var(--momentary-border);
  border-radius: var(--radius-sm);
  background: var(--momentary-bg);
}

.momentary.down {
  border-color: var(--momentary-down-border);
  background: var(--momentary-down-bg);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-soft) 35%, transparent);
}

.keypadGrid {
  display: grid;
  gap: 6px;
  grid-template-columns: repeat(4, minmax(50px, 1fr));
}

.keypadBtn {
  width: 100%;
  min-height: 32px;
  font-family: var(--mono);
  font-size: 12px;
}

.keypadBtn.op {
  background: var(--keypad-op-bg);
}

.keypadBtn.op:hover {
  background: var(--accent-muted);
}

.logs {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1 1 560px;
}

.logView {
  height: 100%;
  margin: 0;
  padding: 12px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--surface-soft);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.35;
}

@media (max-width: 1100px) {
  .card {
    flex-basis: 100%;
  }

  .twoCols {
    grid-template-columns: 1fr;
  }

  .panelTopStatus {
    margin-left: auto;
    width: auto;
    justify-content: flex-end;
  }
}