/* Signal Composition Demo - scoped to #signal-demo */

#signal-demo {
  font-family: 'IBM Plex Mono', 'SF Mono', monospace;
  color: rgba(255,255,255,0.7);
  background: #0b0e14;
  border-radius: 10px;
  margin: 1.5em 0;
}

#signal-demo *, #signal-demo *::before, #signal-demo *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

#signal-demo h1,
#signal-demo p,
#signal-demo span,
#signal-demo button,
#signal-demo div {
  font-family: inherit;
  color: inherit;
  line-height: normal;
}

/* Sticky composite zone */
#signal-demo .sd-composite {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #0b0e14;
  padding: 16px 20px 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* Source signals zone */
#signal-demo .sd-sources {
  padding: 0 20px 20px;
}

/* Signal panels */
#signal-demo .sd-panel {
  background: #0f1319;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}

/* Composite panel inner */
#signal-demo .sd-composite-inner {
  background: #0f1319;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 10px 12px;
}

/* Range inputs - enlarged touch target via transparent border on thumb */
#signal-demo input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.1);
  outline: none;
  flex: 1;
  cursor: pointer;
  padding: 0;
  margin: 0;
}

#signal-demo input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: currentColor;
  cursor: pointer;
  border: 4px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.3);
}

#signal-demo input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: currentColor;
  cursor: pointer;
  border: 4px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.3);
}

/* iOS: make the whole track tappable, not just the thumb */
@supports (-webkit-touch-callout: none) {
  #signal-demo input[type="range"] {
    height: 28px;
    background: transparent;
    background-image: linear-gradient(rgba(255,255,255,0.1), rgba(255,255,255,0.1));
    background-size: 100% 4px;
    background-position: center;
    background-repeat: no-repeat;
  }
}

/* Buttons */
#signal-demo button {
  font-family: 'IBM Plex Mono', monospace;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1;
}

#signal-demo button:hover {
  filter: brightness(1.15);
}

/* Header row - single row on desktop, wraps on mobile */
#signal-demo .sd-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

#signal-demo .sd-title {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 15px;
  font-weight: 400;
  color: #fff;
  margin: 0;
  white-space: nowrap;
}

/* Controls group - all buttons in a row, pushed right */
#signal-demo .sd-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

/* Shared button base */
#signal-demo .sd-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  border-radius: 5px;
  padding: 0 10px;
  height: 26px;
  font-size: 11px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.55);
}

#signal-demo .sd-btn.sd-btn-on {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.35);
  color: #fff;
}

/* Reset button in signal panel headers */
#signal-demo .sd-btn-reset {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 4px;
  font-size: 13px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1;
}

#signal-demo .sd-btn-reset:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.6);
}

/* Mobile */
@media (max-width: 480px) {
  #signal-demo .sd-composite {
    padding: 12px 14px 10px;
  }
  #signal-demo .sd-sources {
    padding: 0 14px 14px;
  }
  #signal-demo .sd-title {
    font-size: 14px;
  }
  #signal-demo .sd-btn {
    padding: 0 11px;
    height: 32px;
    font-size: 12px;
    border-color: rgba(255,255,255,0.28);
    color: rgba(255,255,255,0.65);
  }
  #signal-demo .sd-btn.sd-btn-on {
    border-color: rgba(255,255,255,0.45);
  }
  #signal-demo .sd-btn-reset {
    width: 28px;
    height: 28px;
    font-size: 16px;
  }
  #signal-demo input[type="range"]::-webkit-slider-thumb {
    width: 28px;
    height: 28px;
    border: 6px solid transparent;
  }
}

/* Explanation block */
#signal-demo .sd-explanation {
  padding: 10px 14px;
  background: rgba(255,255,255,0.02);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  margin-top: 12px;
}

#signal-demo .sd-explanation p {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(255,255,255,0.35);
  font-family: 'IBM Plex Sans', sans-serif;
}

/* Canvas containers */
#signal-demo canvas {
  display: block;
  border-radius: 6px;
}