:root {
  --bg: #11151a;
  --panel: #1a212a;
  --panel2: #232c38;
  --accent: #1de9b6;
  --text: #e6edf3;
  --muted: #93a1b0;
  --err: #ff6b6b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid #000;
}
.title {
  font-weight: 700;
}
.conn {
  display: flex;
  align-items: center;
  gap: 8px;
}
.dev-name {
  color: var(--muted);
  font-size: 13px;
}

button {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid #000;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  cursor: pointer;
}
button:hover:not(:disabled) {
  background: #2c3848;
}
button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
#connectBtn,
#flashBtn {
  background: var(--accent);
  color: #04221b;
  font-weight: 700;
  border: none;
}

.banner {
  margin: 12px 16px;
  padding: 12px;
  border-radius: 8px;
  background: #3a2330;
  color: #ffd5d5;
  font-size: 14px;
}
.banner.info {
  background: #1f2f3a;
  color: #cfe8ff;
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 8px 16px 0;
}
.tab {
  border-radius: 8px 8px 0 0;
  border-bottom: none;
}
.tab.active {
  background: var(--accent);
  color: #04221b;
  font-weight: 700;
}

.tabpane {
  display: none;
  padding: 16px;
}
.tabpane.active {
  display: block;
}

/* ---- monitor ---- */
.status {
  background: var(--panel);
  border-radius: 8px;
  padding: 12px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--panel2);
  font-weight: 700;
  font-size: 13px;
}
.chip.accent {
  background: #123;
  color: var(--accent);
}
.chip.run {
  background: #14361f;
  color: #7CFC9A;
}
.chip.hold {
  background: #3a2c12;
  color: #ffc777;
}
.chip.trig {
  background: #103030;
  color: var(--accent);
}
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 10px;
  font-size: 14px;
}
.metrics .k {
  color: var(--muted);
  font-size: 11px;
  display: block;
}

.wave-wrap {
  display: flex;
  justify-content: center;
  margin: 14px 0;
}
#waveform {
  width: min(92vw, 60vh);
  height: min(92vw, 60vh);
  background: #000;
  border-radius: 8px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
.controls .tb {
  min-width: 32px;
  text-align: center;
  font-weight: 700;
}
.controls .live {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
}

.chip.pause {
  background: #3a2c12;
  color: #ffc777;
}

/* ---- scanner ---- */
.scan-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0;
  min-height: 60px;
  align-content: flex-start;
}
.scan-grid .addr {
  padding: 8px 12px;
  border-radius: 8px;
  background: #103030;
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
.scan-grid .desc {
  color: var(--muted);
  font-size: 13px;
}

/* ---- uart monitor ---- */
.uart-term {
  background: #000;
  color: var(--accent);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 16px;
  line-height: 1.35;
  padding: 12px;
  border-radius: 8px;
  margin: 14px 0;
  min-height: 180px;
  white-space: pre;
  overflow-x: auto;
}
.controls select {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid #000;
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 14px;
}

/* ---- servo ---- */
.servo-slider {
  margin: 20px 0;
}
.servo-slider input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

/* ---- flash ---- */
.fw-list {
  list-style: none;
  padding: 0;
  margin: 8px 0;
}
.fw-list li {
  background: var(--panel);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
}
.fw-list label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  cursor: pointer;
}
.fw-list .desc {
  color: var(--muted);
  font-size: 13px;
}
.local {
  margin: 8px 0 14px;
  font-size: 14px;
}
.progress-wrap {
  margin-top: 14px;
}
#flashProgress {
  width: 100%;
  height: 14px;
}
.log {
  background: #000;
  color: #9fb;
  padding: 10px;
  border-radius: 8px;
  min-height: 60px;
  white-space: pre-wrap;
  font-size: 12px;
  max-height: 220px;
  overflow: auto;
}