:root {
  --midi-accent: #3a6df0;
  --midi-bg: #17181c;
  --midi-btn-bg: #2a2d35;
  --midi-btn-fg: #dfe2e8;
  --midi-muted: #9aa0ab;
  --midi-dim: #52565f;
  --midi-border: #2c2f38;
  --midi-hairline: #3a3e48;
  --midi-z-hover: 999999;
  --midi-z-bar: 999998;
  --midi-z-help: 1000000;
}
button[data-bespoke-marp-osc="presenter"],
button[data-bespoke-marp-osc="overview"] {
  display: none !important;
}
#midiHoverZone,
#midiHomeHoverZone {
  z-index: var(--midi-z-hover);
  position: fixed;
}
#midiHoverZone {
  height: 10px;
  top: 0;
  left: 0;
  right: 0;
}
#midiHomeHoverZone {
  width: 14px;
  top: 0;
  bottom: 0;
  left: 0;
}
.midi-btn {
  background: var(--midi-btn-bg);
  color: var(--midi-btn-fg);
  cursor: pointer;
  border: none;
  justify-content: center;
  align-items: center;
  padding: 0;
  line-height: 1;
  transition: background 0.15s;
  display: flex;
}
.midi-btn:hover:not(:disabled) {
  background: var(--midi-accent);
  color: #fff;
}
.midi-btn:disabled {
  color: var(--midi-dim);
  cursor: not-allowed;
  background: #202229;
}
#midiPlayerBar {
  z-index: var(--midi-z-bar);
  background: var(--midi-bg);
  border: 1px solid var(--midi-border);
  color: var(--midi-muted);
  border-top: none;
  border-radius: 0 0 10px 10px;
  align-items: center;
  gap: 14px;
  padding: 10px 18px;
  font:
    14px system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  transition: transform 0.2s;
  display: flex;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translate(-50%, -100%);
  box-shadow: 0 6px 18px #00000073;
}
#midiPlayerBar.open {
  transform: translate(-50%);
}
#midiPlayerBar .midi-btn {
  border-radius: 7px;
  width: 34px;
  height: 34px;
  font-size: 15px;
}
#midiPlayerBar input[type="range"] {
  accent-color: var(--midi-accent);
  background: 0 0;
}
#midiPlayerBar #midiSeek {
  width: 240px;
}
#midiPlayerBar #midiVolume {
  width: 90px;
}
#midiPlayerBar .midi-vol-pct {
  text-align: right;
  font-variant-numeric: tabular-nums;
  min-width: 2.6em;
  color: var(--midi-muted);
  user-select: none;
  font-size: 13px;
}
#midiPlayerBar .midi-time {
  text-align: center;
  font-variant-numeric: tabular-nums;
  width: 46px;
  font-size: 13px;
}
#midiHomeDrawer {
  z-index: var(--midi-z-bar);
  background: var(--midi-bg);
  border: 1px solid var(--midi-border);
  border-left: none;
  border-radius: 0 12px 12px 0;
  justify-content: center;
  align-items: center;
  padding: 16px 14px;
  transition: transform 0.2s;
  display: flex;
  position: fixed;
  top: 50%;
  left: 0;
  transform: translate(-100%, -50%);
  box-shadow: 6px 0 18px #00000073;
}
#midiHomeDrawer.open {
  transform: translateY(-50%);
}
#midiHomeDrawer .midi-btn {
  border-radius: 10px;
  width: 48px;
  height: 48px;
  font-size: 18px;
}
#midiHomeDrawer #midiHomeBtn img,
#midiHomeDrawer #midiHomeBtn svg {
  width: 26px;
  height: 26px;
  transition: transform 0.15s;
  display: block;
}
#midiHomeDrawer #midiHomeBtn:hover img,
#midiHomeDrawer #midiHomeBtn:hover svg {
  transform: translate(-1px);
}
#midiHelpOverlay {
  z-index: var(--midi-z-help);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  color: #f0f0f0;
  background: #0000008c;
  justify-content: center;
  align-items: center;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  display: flex;
  position: fixed;
  inset: 0;
}
#midiHelpOverlay[hidden] {
  display: none !important;
}
.midi-help-panel {
  background: var(--midi-bg);
  border: 1px solid var(--midi-border);
  border-radius: 12px;
  width: 100%;
  max-width: min(420px, 92vw);
  padding: 1.25rem 1.5rem 1.1rem;
  box-shadow: 0 16px 48px #00000073;
}
.midi-help-header {
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
  display: flex;
}
.midi-help-header h2 {
  letter-spacing: 0.02em;
  color: var(--midi-btn-fg);
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}
.midi-help-close {
  color: var(--midi-muted);
  cursor: pointer;
  background: 0 0;
  border: none;
  padding: 0 0.15rem;
  font-size: 1.5rem;
  line-height: 1;
}
.midi-help-close:hover {
  color: #fff;
}
.midi-help-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
.midi-help-table td {
  vertical-align: middle;
  padding: 0.4rem 0;
}
.midi-help-keys {
  white-space: nowrap;
  width: 1%;
  padding-right: 1rem;
}
.midi-help-plus {
  color: var(--midi-dim);
  margin: 0 0.15em;
  font-size: 0.85em;
}
.midi-help-desc {
  color: var(--midi-muted);
}
.midi-help-verse {
  color: var(--midi-dim);
  margin: 0.9rem 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
}
.midi-help-verse code {
  background: var(--midi-btn-bg);
  color: var(--midi-muted);
  border-radius: 3px;
  padding: 0.05em 0.3em;
  font-family:
    ui-monospace,
    "SF Mono",
    Menlo,
    Consolas,
    monospace;
  font-size: 0.92em;
}
.midi-help-panel kbd {
  background: var(--midi-btn-bg);
  border: 1px solid var(--midi-hairline);
  color: var(--midi-btn-fg);
  border-radius: 3px;
  font-family:
    ui-monospace,
    "SF Mono",
    Menlo,
    Consolas,
    monospace;
  display: inline-block;
}
.midi-help-keys kbd {
  text-align: center;
  border-bottom-width: 2px;
  border-radius: 5px;
  min-width: 1.4em;
  margin: 0 0.05em;
  padding: 0.15em 0.45em;
  font-size: 0.85em;
  font-weight: 600;
}
.midi-help-verse kbd {
  padding: 0.05em 0.3em;
  font-size: 0.9em;
}
.midi-help-contact {
  border-top: 1px solid var(--midi-border);
  color: var(--midi-dim);
  text-align: center;
  margin: 0.9rem 0 0;
  padding-top: 0.75rem;
  font-size: 0.8rem;
}
.midi-help-contact a {
  background: var(--midi-btn-bg);
  border: 1px solid var(--midi-hairline);
  color: var(--midi-muted);
  border-radius: 999px;
  align-items: center;
  gap: 0.4em;
  margin-left: 0.35em;
  padding: 0.25em 0.7em;
  text-decoration: none;
  transition:
    background 0.15s,
    border-color 0.15s,
    color 0.15s;
  display: inline-flex;
}
.midi-help-contact a:hover,
.midi-help-contact a:focus-visible {
  background: var(--midi-accent);
  border-color: var(--midi-accent);
  color: #fff;
}
.midi-help-contact a:before {
  content: "✉";
  opacity: 0.8;
  font-size: 0.9em;
}