.lecture-notes-root {
  --lecture-notes-ink: #111;
  --lecture-notes-soft-ink: #506175;
  --lecture-notes-bg: #fff;
  --lecture-notes-surface: #fff;
  --lecture-notes-panel: #fbfbfb;
  --lecture-notes-line: #dbe4ef;
  --lecture-notes-accent: #2f7be5;
  --lecture-notes-success: #0ead69;
  --lecture-notes-danger: #c44536;
  --lecture-notes-shadow: 0 6px 22px rgba(0, 0, 0, 0.1);
  color: var(--lecture-notes-ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

.lecture-notes-root [hidden] {
  display: none !important;
}

.lecture-notes {
  overflow: hidden;
  border: 1px solid #e6e6e6;
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--lecture-notes-shadow);
}

.lecture-notes:fullscreen,
.lecture-notes:-webkit-full-screen,
.lecture-notes:-moz-full-screen,
.lecture-notes:-ms-fullscreen {
  width: 100vw;
  height: 100vh;
  max-width: none;
  border-radius: 0;
}

.lecture-notes:fullscreen .lecture-notes__layout,
.lecture-notes:-webkit-full-screen .lecture-notes__layout,
.lecture-notes:-moz-full-screen .lecture-notes__layout,
.lecture-notes:-ms-fullscreen .lecture-notes__layout,
.lecture-notes:fullscreen .lecture-notes__main,
.lecture-notes:-webkit-full-screen .lecture-notes__main,
.lecture-notes:-moz-full-screen .lecture-notes__main,
.lecture-notes:-ms-fullscreen .lecture-notes__main {
  min-height: 100vh;
}

.lecture-notes:fullscreen .lecture-notes__main,
.lecture-notes:-webkit-full-screen .lecture-notes__main,
.lecture-notes:-moz-full-screen .lecture-notes__main,
.lecture-notes:-ms-fullscreen .lecture-notes__main {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  align-content: stretch;
  padding: 20px 24px 28px;
}

.lecture-notes:fullscreen .lecture-notes__stage,
.lecture-notes:-webkit-full-screen .lecture-notes__stage,
.lecture-notes:-moz-full-screen .lecture-notes__stage,
.lecture-notes:-ms-fullscreen .lecture-notes__stage {
  align-self: stretch;
  min-height: 0;
}

.lecture-notes:fullscreen .lecture-notes-abc,
.lecture-notes:-webkit-full-screen .lecture-notes-abc,
.lecture-notes:-moz-full-screen .lecture-notes-abc,
.lecture-notes:-ms-fullscreen .lecture-notes-abc {
  min-height: min(44vh, 520px);
  align-items: center;
}

.lecture-notes:fullscreen .lecture-notes__answerDisplay--stage,
.lecture-notes:-webkit-full-screen .lecture-notes__answerDisplay--stage,
.lecture-notes:-moz-full-screen .lecture-notes__answerDisplay--stage,
.lecture-notes:-ms-fullscreen .lecture-notes__answerDisplay--stage {
  bottom: clamp(28px, 8vh, 72px);
}

.lecture-notes:fullscreen .lecture-notes__keyboard,
.lecture-notes:-webkit-full-screen .lecture-notes__keyboard,
.lecture-notes:-moz-full-screen .lecture-notes__keyboard,
.lecture-notes:-ms-fullscreen .lecture-notes__keyboard {
  align-self: end;
  margin-top: 0;
  padding-bottom: 6px;
}

.lecture-notes__layout {
  position: relative;
  min-height: 720px;
}

.lecture-notes__panel {
  position: absolute;
  inset: 0 auto 0 0;
  width: 460px;
  max-width: calc(100% - 28px);
  border-right: 1px solid #eee;
  background: var(--lecture-notes-panel);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.1);
  transform: translateX(calc(-100% - 8px));
  transition: transform 180ms ease;
  z-index: 20;
  pointer-events: none;
}

.lecture-notes--panel-open .lecture-notes__panel {
  transform: translateX(0);
  pointer-events: auto;
}

.lecture-notes__panelClose,
.lecture-notes__miniButton,
.lecture-notes__fab,
.lecture-notes__key,
.lecture-notes__ambitusLabel,
.lecture-notes__ambitusFallbackNote {
  border: 1px solid #d7dce3;
  background: #fff;
  color: var(--lecture-notes-ink);
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease, background 140ms ease;
}

.lecture-notes__panelClose:hover,
.lecture-notes__miniButton:hover,
.lecture-notes__fab:hover,
.lecture-notes__key:hover,
.lecture-notes__ambitusLabel:hover,
.lecture-notes__ambitusFallbackNote:hover {
  transform: translateY(-1px);
  border-color: #c7d7e8;
  box-shadow: 0 4px 10px rgba(20, 60, 120, 0.12);
}

.lecture-notes__panelClose {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  cursor: pointer;
}

.lecture-notes__panelBody {
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
  overflow-y: auto;
  padding: 54px 16px 18px;
}

.lecture-notes__field label,
.lecture-notes__sectionTitle {
  display: block;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--lecture-notes-ink);
}

.lecture-notes__toggleField {
  display: flex !important;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
}

.lecture-notes__clefChecks {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.lecture-notes__checkItem {
  display: flex !important;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
}

.lecture-notes__toggleField input {
  margin: 0;
}

.lecture-notes__checkItem input {
  margin: 0;
}

.lecture-notes__field select {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid #dfe8f2;
  border-radius: 12px;
  background: #fff;
  color: var(--lecture-notes-ink);
  font-size: 0.96rem;
}

.lecture-notes__ambitusBlock {
  display: grid;
  gap: 10px;
}

.lecture-notes__sectionHint {
  margin: 0;
  color: var(--lecture-notes-soft-ink);
  font-size: 0.88rem;
  line-height: 1.5;
}

.lecture-notes__main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 720px;
  padding: 18px 18px 24px;
}

.lecture-notes__toolbar,
.lecture-notes__scoreboard,
.lecture-notes__ambitusActions,
.lecture-notes__answerActions,
.lecture-notes__answerActions--duo,
.lecture-notes__duoHead {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.lecture-notes__toolbar {
  justify-content: space-between;
}

.lecture-notes__toolbarMeta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.lecture-notes__toolbarGroup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.lecture-notes__fab,
.lecture-notes__miniButton {
  cursor: pointer;
}

.lecture-notes__fab {
  border-radius: 999px;
  padding: 11px 16px;
  font-size: 0.92rem;
  font-weight: 800;
}

.lecture-notes__fab--icon {
  width: 46px;
  height: 46px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.lecture-notes__fab--icon svg {
  width: 22px;
  height: 22px;
  display: block;
}

.lecture-notes__miniButton {
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.84rem;
  font-weight: 700;
}

.lecture-notes__modeChooser {
  position: relative;
}

.lecture-notes__modeButton,
.lecture-notes__modeOption,
[data-role="mode-label"] {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.lecture-notes__duoToggle {
  width: 116px;
  justify-content: center;
  flex: 0 0 116px;
}

.lecture-notes__fullscreenButton {
  flex: 0 0 46px;
}

.lecture-notes__fullscreenButton .lecture-notes__fsExit {
  display: none;
}

.lecture-notes__fullscreenButton.is-fullscreen .lecture-notes__fsEnter {
  display: none;
}

.lecture-notes__fullscreenButton.is-fullscreen .lecture-notes__fsExit {
  display: block;
}

.lecture-notes__modeButtonText {
  opacity: 0.78;
}

.lecture-notes__duoToggle.is-active {
  background: #e9f2ff;
  color: #1f5fae;
  border-color: #c6ddff;
}

.lecture-notes__modeMenu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 240px;
  padding: 10px;
  border: 1px solid #d8e1ec;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--lecture-notes-shadow);
  z-index: 25;
}

.lecture-notes__modeOption {
  width: 100%;
  padding: 12px 14px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--lecture-notes-ink);
  text-align: left;
  font-size: 0.96rem;
  font-weight: 700;
  cursor: pointer;
}

.lecture-notes__modeOption:hover {
  background: #f3f7fd;
}

.lecture-notes__modeInlineIcon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 18px;
}

.lecture-notes__modeInlineIcon svg {
  width: 18px;
  height: 18px;
  display: block;
}

.lecture-notes__cardLabel {
  text-align: center;
}

.lecture-notes__cardLabel {
  color: var(--lecture-notes-soft-ink);
  font-size: 0.8rem;
  font-weight: 700;
}

.lecture-notes__cardLabel--toolbar {
  min-height: 0;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}

.lecture-notes__duoStatus {
  padding: 10px 14px;
  border-radius: 16px;
  background: #f7fbff;
  font-weight: 700;
  border: 1px solid #d9e6f5;
}

.lecture-notes__duoStatus {
  color: var(--lecture-notes-soft-ink);
}
.lecture-notes__duoStatus.is-success {
  background: linear-gradient(135deg, rgba(255, 183, 3, 0.18), rgba(14, 173, 105, 0.16));
  color: #084d31;
}

.lecture-notes__duoStatus.is-error {
  background: rgba(196, 69, 54, 0.12);
  color: #85261d;
}

.lecture-notes__scorePill {
  padding: 8px 12px;
  border: 1px solid #e4ebf3;
  border-radius: 999px;
  background: #fbfdff;
  font-weight: 700;
}

.lecture-notes__stage,
.lecture-notes__duoStage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid #dbe4ef;
  background: linear-gradient(180deg, #fff 0%, #fbfdff 100%);
}

.lecture-notes__stage {
  min-height: 330px;
  border-radius: 24px;
}

.lecture-notes__stage::before,
.lecture-notes__duoStage::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed #d8dee8;
  border-radius: 18px;
}

.lecture-notes__stage--success {
  box-shadow: inset 0 0 0 4px rgba(14, 173, 105, 0.18), 0 0 0 5px rgba(255, 183, 3, 0.16);
}

.lecture-notes__stage--error {
  box-shadow: inset 0 0 0 4px rgba(196, 69, 54, 0.16);
}

.lecture-notes-abc {
  position: relative;
  z-index: 2;
  width: min(100%, 780px);
  min-height: 210px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  text-align: center;
}

.lecture-notes-abc--duo {
  width: 100%;
  min-height: 180px;
}

.lecture-notes-overlay,
.lecture-notes__celebration {
  position: absolute;
  inset: 0;
}

.lecture-notes-overlay {
  z-index: 3;
  pointer-events: none;
}

.lecture-notes__celebration {
  z-index: 4;
  overflow: hidden;
  pointer-events: none;
}

.lecture-notes__confetti {
  position: absolute;
  top: 26%;
  width: 11px;
  height: 20px;
  border-radius: 4px;
  animation: lecture-notes-confetti 0.95s ease-out forwards;
}

.lecture-notes__duoPane {
  padding: 14px;
  border: 1px solid #e4ebf3;
  border-radius: 18px;
  background: #fff;
}

.lecture-notes__answerDisplay {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
}

.lecture-notes__answerDisplay--stage {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 4;
}

.lecture-notes__writingPrompt {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 18px;
  z-index: 4;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.lecture-notes__writingChip {
  min-width: 120px;
  padding: 12px 20px;
  border: 1px solid #c6ddff;
  border-radius: 999px;
  background: #e9f2ff;
  color: #1f5fae;
  text-align: center;
  font-size: 1.2rem;
  font-weight: 900;
}

.lecture-notes__answerChip {
  min-width: 82px;
  padding: 12px 16px;
  border: 1px dashed #d8dee8;
  border-radius: 16px;
  background: #f9fbff;
  color: var(--lecture-notes-soft-ink);
  text-align: center;
  font-size: 1.15rem;
  font-weight: 900;
}

.lecture-notes__answerChip.is-filled {
  border-style: solid;
  border-color: #c6ddff;
  background: #e9f2ff;
  color: #1f5fae;
}

.lecture-notes__answerChip--interval {
  min-width: 160px;
}

.lecture-notes__keyboard,
.lecture-notes__keyboard--duo {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 72px));
  justify-content: center;
  gap: 8px;
}

.lecture-notes__key {
  min-height: 44px;
  padding: 10px 8px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 900;
  border-color: #2a6fcb;
  background: #2f7be5;
  color: #fff;
  box-shadow: 0 4px 10px rgba(20, 60, 120, 0.18);
}

.lecture-notes__key:hover {
  border-color: #2a70d2;
  background: #2a70d2;
}

.lecture-notes__duo {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.lecture-notes__duoPane {
  display: grid;
  gap: 12px;
}

.lecture-notes__duoPane.is-success {
  box-shadow: inset 0 0 0 3px rgba(14, 173, 105, 0.2);
}

.lecture-notes__duoPane.is-error {
  box-shadow: inset 0 0 0 3px rgba(196, 69, 54, 0.18);
}

.lecture-notes__duoHead {
  justify-content: space-between;
}

.lecture-notes__duoTitle {
  font-size: 1rem;
  font-weight: 900;
}

.lecture-notes__duoScore,
.lecture-notes__duoCardLabel {
  color: var(--lecture-notes-soft-ink);
  font-weight: 700;
}

.lecture-notes__duoScore {
  font-size: 0.9rem;
}

.lecture-notes__duoCardLabel {
  min-height: 22px;
  text-align: center;
  font-size: 0.88rem;
}

.lecture-notes__duoStatus {
  text-align: center;
}

.lecture-notes__duoStage {
  min-height: 240px;
  border-radius: 18px;
}

.lecture-notes__ambitusPicker {
  margin-top: 12px;
  padding: 0;
}

.lecture-notes__ambitusAbcWrap {
  display: grid;
  gap: 8px;
  padding: 10px 10px 8px;
  border: 1px solid #e3ebf5;
  border-radius: 14px;
  background: #fff;
}

.lecture-notes__ambitusMeta {
  color: var(--lecture-notes-soft-ink);
  font-size: 0.86rem;
  font-weight: 700;
}

.lecture-notes__ambitusAbc {
  min-height: 150px;
  padding: 6px 2px;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.lecture-notes__ambitusAbc svg {
  width: 100%;
  height: auto;
  display: block;
}

.lecture-notes__ambitusAbc .abcjs-note {
  transition: opacity 140ms ease, filter 140ms ease;
  outline: none;
}

.lecture-notes__ambitusAbc .abcjs-note.is-muted {
  opacity: 0.28;
}

.lecture-notes__ambitusAbc .abcjs-note.is-active {
  opacity: 1;
}

.lecture-notes__ambitusLegend {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}

.lecture-notes__ambitusLabel,
.lecture-notes__ambitusFallbackNote {
  padding: 6px 4px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--lecture-notes-soft-ink);
  font-size: 0.7rem;
  font-weight: 800;
}

.lecture-notes__ambitusLabel.is-active,
.lecture-notes__ambitusFallbackNote.is-active {
  background: #e9f2ff;
  border-color: #c6ddff;
  color: #1f5fae;
}

.lecture-notes__ambitusLabel.is-muted,
.lecture-notes__ambitusFallbackNote.is-muted {
  background: rgba(255, 255, 255, 0.68);
  color: #a0a8b5;
}

.lecture-notes__ambitusEmpty {
  padding: 18px;
  border-radius: 16px;
  background: #f9fbff;
  color: var(--lecture-notes-soft-ink);
  text-align: center;
  font-weight: 700;
  border: 1px dashed #d8dee8;
}

.lecture-notes-target-line {
  position: absolute;
  top: 10%;
  bottom: 18%;
  left: 12%;
  width: 3px;
  background: linear-gradient(to bottom, transparent, var(--lecture-notes-ink), transparent);
}

.lecture-notes-flying-note {
  position: absolute;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  line-height: 1;
}

.lecture-notes-explode {
  animation: lecture-notes-explode 0.25s ease-out forwards;
}

.lecture-notes-grid-spot {
  position: absolute;
  left: 42%;
  width: 28%;
  height: 14px;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  cursor: crosshair;
}

.lecture-notes-grid-spot:hover:not(:disabled) {
  background: #eaf3ff;
}

.lecture-notes-grid-spot:disabled {
  cursor: not-allowed;
}

.lecture-notes-placed {
  position: absolute;
  width: 18px;
  height: 13px;
  border-radius: 999px;
  transform: translate(-50%, -50%);
}

.lecture-notes-placed.ok {
  background: var(--lecture-notes-success);
}

.lecture-notes-placed.ko {
  background: var(--lecture-notes-danger);
}

.lecture-notes--writing .lecture-notes__stage {
  min-height: 420px;
}

.lecture-notes--writing .lecture-notes-abc {
  width: 100%;
  min-height: 280px;
  padding: 22px 22px 110px;
}

.lecture-notes--writing .lecture-notes-overlay {
  inset: 18px 22px 78px;
}

.lecture-notes--writing .lecture-notes__answerDisplay--stage {
  display: none;
}

.lecture-notes--duo .lecture-notes__main {
  gap: 10px;
}

.lecture-notes--duo .lecture-notes__duo {
  gap: 0;
  overflow: hidden;
  border: 1px solid #e4ebf3;
  border-radius: 14px;
  background: #fff;
}

.lecture-notes--duo .lecture-notes__duoPane {
  min-height: 620px;
  border: 0;
  border-radius: 0;
  padding: 18px;
  background: #fbfdff;
}

.lecture-notes--duo .lecture-notes__duoPane + .lecture-notes__duoPane {
  border-left: 1px solid #e4ebf3;
}

.lecture-notes--duo .lecture-notes__duoCardLabel {
  min-height: 28px;
  font-size: 1rem;
}

.lecture-notes--duo .lecture-notes__duoStage {
  min-height: 320px;
}

.lecture-notes--duo .lecture-notes__keyboard--duo {
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

@keyframes lecture-notes-explode {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(2.3);
    opacity: 0;
  }
}

@keyframes lecture-notes-confetti {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(180px) rotate(250deg);
    opacity: 0;
  }
}

@media (max-width: 900px) {
  .lecture-notes__duo {
    grid-template-columns: 1fr;
  }

  .lecture-notes--duo .lecture-notes__duoPane + .lecture-notes__duoPane {
    border-left: 0;
    border-top: 1px solid #e4ebf3;
  }
}

@media (max-width: 760px) {
  .lecture-notes__main {
    padding: 14px;
  }

  .lecture-notes__toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .lecture-notes__fab {
    width: 100%;
  }

  .lecture-notes__modeMenu {
    left: 0;
    right: 0;
    min-width: 0;
  }

  .lecture-notes__stage {
    min-height: 280px;
  }

  .lecture-notes-grid-spot {
    left: 34%;
    width: 46%;
  }

  .lecture-notes__keyboard,
  .lecture-notes__keyboard--duo {
    grid-template-columns: repeat(auto-fit, minmax(56px, 1fr));
  }
}