:root {
  --cream:        #FFF4E1; 
  --cream-2:      #FFE9C2; 
  --orange:       #E89B5C;  
  --orange-deep:  #C7793A;
  --brown:        #3A2A1F; 
  --brown-soft:   #6B4A36;
  --white-patch:  #FFFAF0;
  --pink:         #F4B8A8; 
  --pink-deep:    #E48F7A;
  --beige:        #EBD9B8;
  --beige-deep:   #C9B187;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--cream);
  color: var(--brown);
  font-family: 'Quicksand', -apple-system, BlinkMacSystemFont, sans-serif;
  height: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

header {
  padding: 12px 20px;
  background: linear-gradient(180deg, var(--cream-2), var(--cream));
  border-bottom: 3px dashed var(--beige-deep);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  position: relative;
}

.ear {
  position: absolute;
  top: -14px;
  width: 28px;
  height: 28px;
  background: var(--orange);
  border: 2px solid var(--brown);
  border-radius: 50% 50% 0 50%;
  transform: rotate(-30deg);
}
.ear.right {
  right: 24px;
  background: var(--brown);
  border-radius: 50% 50% 50% 0;
  transform: rotate(30deg);
}
.ear::after {
  content: "";
  position: absolute;
  inset: 6px 4px 4px 6px;
  background: var(--pink);
  border-radius: inherit;
}
.ear.right::after { background: #C9A89A; }

.title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cat-face {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 40%, var(--orange) 0 35%, transparent 36%),
    radial-gradient(circle at 70% 35%, var(--brown)  0 30%, transparent 31%),
    var(--white-patch);
  border: 2px solid var(--brown);
  position: relative;
  flex-shrink: 0;
}
.cat-face::before,
.cat-face::after {
  content: "";
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--brown);
  border-radius: 50%;
  top: 14px;
}
.cat-face::before { left: 11px; }
.cat-face::after  { right: 11px; }
.cat-face .nose {
  position: absolute;
  width: 5px;
  height: 4px;
  background: var(--pink-deep);
  border-radius: 50%;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
}

header h1 {
  font-family: 'Fredoka', sans-serif;
  font-size: 19px;
  margin: 0;
  font-weight: 600;
  color: var(--brown);
  letter-spacing: 0.3px;
}

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

button {
  background: var(--white-patch);
  color: var(--brown);
  border: 2px solid var(--brown);
  padding: 7px 14px;
  border-radius: 14px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 600;
  font-family: inherit;
  transition: transform 0.1s, background 0.15s;
  box-shadow: 0 2px 0 var(--brown);
  min-height: 38px;
}
button:hover {
  background: var(--cream-2);
  transform: translateY(-1px);
  box-shadow: 0 3px 0 var(--brown);
}
button:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 var(--brown);
}
button.primary {
  background: var(--orange);
  color: var(--white-patch);
}
button.primary:hover { background: var(--orange-deep); }
button.danger { background: var(--pink); }
button.danger:hover {
  background: var(--pink-deep);
  color: var(--white-patch);
}

label.field {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  font-size: 12px;
  color: var(--brown-soft);
  font-weight: 600;
}

input[type="number"],
select,
input[type="file"] {
  background: var(--white-patch);
  color: var(--brown);
  border: 2px solid var(--brown);
  border-radius: 10px;
  padding: 5px 8px;
  font-size: 13px;
  width: 70px;
  font-family: inherit;
  font-weight: 600;
  min-height: 36px;
}
select { width: auto; padding-right: 22px; }
input[type="file"] {
  width: auto;
  padding: 4px 6px;
  font-weight: 500;
}

.note-type-group {
  display: inline-flex;
  border: 2px solid var(--brown);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 2px 0 var(--brown);
}
.note-type-btn {
  background: var(--white-patch);
  border: none;
  border-radius: 0;
  box-shadow: none;
  padding: 7px 12px;
  font-weight: 600;
  font-size: 13px;
  color: var(--brown);
  cursor: pointer;
  font-family: inherit;
  border-right: 2px solid var(--brown);
  min-height: 38px;
}
.note-type-btn:last-child { border-right: none; }
.note-type-btn:hover {
  background: var(--cream-2);
  transform: none;
  box-shadow: none;
}
.note-type-btn.active {
  background: var(--orange);
  color: var(--white-patch);
}
.note-type-btn.active:hover { background: var(--orange-deep); }

.info {
  margin-left: auto;
  font-size: 13px;
  color: var(--brown-soft);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.info .paw { color: var(--orange-deep); }

.editor {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--cream);
}

.timeline-wrap {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  background: var(--cream);
  -webkit-overflow-scrolling: touch;
}
.timeline-wrap::-webkit-scrollbar { width: 12px; }
.timeline-wrap::-webkit-scrollbar-track { background: var(--cream-2); }
.timeline-wrap::-webkit-scrollbar-thumb {
  background: var(--orange);
  border-radius: 6px;
  border: 2px solid var(--cream-2);
}

.lane-header {
  display: flex;
  height: 38px;
  background: var(--cream-2);
  border-bottom: 2px solid var(--brown);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
}
.lane-label {
  flex: 1;
  text-align: center;
  line-height: 38px;
  font-size: 14px;
  font-weight: 700;
  color: var(--brown);
  font-family: 'Fredoka', sans-serif;
  border-right: 2px dashed var(--beige-deep);
}
.lane-label:last-child { border-right: none; }

.waveform {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.grid {
  position: relative;
  width: 100%;
  background:
    linear-gradient(to right,
      transparent 0,             transparent calc(20% - 1px),
      var(--beige-deep) calc(20% - 1px), var(--beige-deep) 20%,
      transparent 20%,           transparent calc(40% - 1px),
      var(--beige-deep) calc(40% - 1px), var(--beige-deep) 40%,
      transparent 40%,           transparent calc(60% - 1px),
      var(--beige-deep) calc(60% - 1px), var(--beige-deep) 60%,
      transparent 60%,           transparent calc(80% - 1px),
      var(--beige-deep) calc(80% - 1px), var(--beige-deep) 80%,
      transparent 80%
    ),
    linear-gradient(to right,
      rgba(232, 155, 92, 0.08)  0   20%,
      rgba(58,  42,  31, 0.08) 20% 40%,
      rgba(255, 250, 240, 0.5)  40% 60%,
      rgba(244, 184, 168, 0.08) 60% 80%,
      rgba(199, 121,  58, 0.08) 80% 100%
    );
  cursor: crosshair;
  touch-action: pan-y; 
  user-select: none;
  -webkit-user-select: none;
}
.grid.hold-mode {
  touch-action: none;
  cursor: ns-resize;
}

.beat-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--beige);
  pointer-events: none;
}
.beat-line.major {
  background: var(--beige-deep);
  height: 2px;
}
.beat-label {
  position: absolute;
  left: 4px;
  font-size: 10px;
  color: var(--brown-soft);
  pointer-events: none;
  transform: translateY(-50%);
  font-weight: 600;
  background: var(--cream);
  padding: 0 3px;
  border-radius: 3px;
}

.note {
  position: absolute;
  cursor: pointer;
  transition: transform 0.08s, filter 0.1s;
  touch-action: none;
}
.note:hover {
  filter: brightness(1.08);
  transform: scale(1.04);
}

.note.tap {
  height: 16px;
  border-radius: 999px;
  border: 2px solid var(--brown);
  box-shadow: 0 2px 0 var(--brown), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.note.tap.lane-0 { background: var(--orange); }
.note.tap.lane-1 { background: var(--brown); }
.note.tap.lane-2 { background: var(--white-patch); }
.note.tap.lane-3 { background: var(--pink); }
.note.tap.lane-4 { background: var(--orange-deep); }

.note.hold {
  border: 2px solid var(--brown);
  border-radius: 10px;
  box-shadow: 0 2px 0 var(--brown);
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0 6px,
    rgba(255, 255, 255, 0.25) 6px 10px
  );
}
.note.hold.lane-0 { background-color: var(--orange); }
.note.hold.lane-1 { background-color: var(--brown); }
.note.hold.lane-2 { background-color: var(--white-patch); }
.note.hold.lane-3 { background-color: var(--pink); }
.note.hold.lane-4 { background-color: var(--orange-deep); }
.note.hold .head,
.note.hold .tail {
  position: absolute;
  left: -2px;
  right: -2px;
  height: 8px;
  background: var(--brown);
  border-radius: 6px;
}
.note.hold .head { bottom: -4px; }
.note.hold .tail { top: -4px; }

.note.flick {
  height: 30px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.note.flick svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  filter: drop-shadow(0 2px 0 var(--brown));
}
.note.flick .arrow {
  stroke: var(--brown);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.note.flick .sparkle { fill: var(--brown); }
.note.flick.lane-0 .arrow { fill: var(--orange); }
.note.flick.lane-1 .arrow { fill: var(--brown); stroke: var(--cream); }
.note.flick.lane-1 .sparkle { fill: var(--cream-2); }
.note.flick.lane-2 .arrow { fill: var(--white-patch); }
.note.flick.lane-3 .arrow { fill: var(--pink); }
.note.flick.lane-4 .arrow { fill: var(--orange-deep); }

.playhead {
  position: absolute;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--pink-deep);
  box-shadow: 0 0 10px rgba(228, 143, 122, 0.8);
  pointer-events: none;
  z-index: 10;
  border-radius: 2px;
}
.playhead::after {
  content: "🐾";
  position: absolute;
  right: 8px;
  top: -10px;
  font-size: 14px;
  filter: drop-shadow(0 1px 0 var(--brown));
}

.drag-preview {
  position: absolute;
  background: rgba(232, 155, 92, 0.35);
  border: 2px dashed var(--brown);
  border-radius: 10px;
  pointer-events: none;
  z-index: 5;
}

.hint {
  position: fixed;
  bottom: 12px;
  right: 16px;
  font-size: 11px;
  color: var(--brown-soft);
  background: var(--white-patch);
  padding: 5px 10px;
  border-radius: 12px;
  border: 2px solid var(--brown);
  font-weight: 600;
  box-shadow: 0 2px 0 var(--brown);
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hint.hidden { display: none; }
.hint-close {
  background: transparent;
  border: none;
  color: var(--brown-soft);
  cursor: pointer;
  padding: 0;
  margin: 0 -2px 0 4px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  box-shadow: none;
  min-height: auto;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
}
.hint-close:hover {
  color: var(--white-patch);
  background: var(--pink-deep);
  transform: none;
  box-shadow: none;
}

.zoom-group {
  display: inline-flex;
  align-items: stretch;
  border: 2px solid var(--brown);
  border-radius: 999px;
  overflow: hidden;
  background: var(--cream);
  box-shadow: 0 2px 0 var(--brown);
  height: 34px;
}
.zoom-group button {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0 12px;
  font-family: 'Fredoka', sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
  color: var(--brown);
  cursor: pointer;
  min-height: 0;
  box-shadow: none;
}
.zoom-group button:hover { background: var(--cream-2); transform: none; }
.zoom-group button:active { background: var(--orange); color: var(--cream); }
.zoom-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  padding: 0 6px;
  font-family: 'Fredoka', sans-serif;
  font-weight: 700;
  font-size: 12px;
  color: var(--brown);
  border-left: 2px solid var(--brown);
  border-right: 2px solid var(--brown);
  background: var(--cream-2);
  user-select: none;
}

.note.dragging {
  opacity: 0.25;
  pointer-events: none;
  transition: none;
}
.note.ghost {
  pointer-events: none;
  z-index: 15;
  opacity: 0.85;
  filter: drop-shadow(0 4px 6px rgba(58, 42, 31, 0.45));
  transition: none;
}
.note.ghost:hover { transform: none; }
.tools-toggle { display: none; }

body.horizontal .tools-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

body.horizontal.tools-collapsed header,
body.horizontal.tools-collapsed .hint {
  display: none;
}

.tools-show {
  display: none;
  position: fixed;
  top: 8px;
  right: 8px;
  z-index: 100;
  padding: 6px 12px;
  font-size: 13px;
  background: var(--cream-2);
  color: var(--brown);
  border: 2px solid var(--brown);
  border-radius: 999px;
  font-family: 'Fredoka', sans-serif;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 0 var(--brown);
  min-height: 0;
}
body.horizontal.tools-collapsed .tools-show { display: inline-flex; }
.tools-show:hover { background: var(--cream); transform: translateY(-1px); }

.onset-hold-region {
  position: absolute;
  pointer-events: none;
  background: repeating-linear-gradient(
    45deg,
    rgba(232, 155, 92, 0.08) 0 8px,
    rgba(232, 155, 92, 0.18) 8px 16px
  );
  border-top: 1px dashed rgba(232, 155, 92, 0.45);
  border-bottom: 1px dashed rgba(232, 155, 92, 0.45);
  z-index: 0;
}
.onset-line {
  position: absolute;
  left: 0;
  right: 0;
  pointer-events: none;
  z-index: 1;
}
.onset-line.onset-tap.weak {
  height: 1px;
  background: rgba(58, 42, 31, 0.18);
}
.onset-line.onset-tap.medium {
  height: 2px;
  background: rgba(228, 143, 122, 0.55);
}
.onset-line.onset-tap.strong {
  height: 3px;
  background: var(--pink-deep);
  box-shadow: 0 0 6px rgba(228, 143, 122, 0.45);
}
.onset-line.onset-flick {
  height: 3px;
  background: var(--orange-deep);
  box-shadow: 0 0 8px rgba(199, 121, 58, 0.55);
}
.onset-line.onset-flick::after {
  content: "";
  position: absolute;
  right: 6px;
  top: 50%;
  width: 12px;
  height: 12px;
  transform: translateY(-50%) rotate(45deg);
  border-top: 2px solid var(--orange-deep);
  border-right: 2px solid var(--orange-deep);
  background: transparent;
}

body.horizontal .timeline-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  flex-direction: row;
}
body.horizontal .timeline-wrap::-webkit-scrollbar { width: 12px; height: 12px; }

body.horizontal .lane-header {
  flex-direction: column;
  width: 38px;
  height: 100%;
  border-bottom: none;
  border-right: 2px solid var(--brown);
  position: sticky;
  left: 0;
  top: auto;
  z-index: 20;
}
body.horizontal .lane-label {
  flex: 1;
  border-right: none;
  border-bottom: 2px dashed var(--beige-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
body.horizontal .lane-label:last-child { border-bottom: none; }

body.horizontal .grid {
  width: auto; 
  height: 100%;
  flex-shrink: 0;
  cursor: crosshair;
  touch-action: pan-x;
  background:
    linear-gradient(to bottom,
      transparent 0,             transparent calc(20% - 1px),
      var(--beige-deep) calc(20% - 1px), var(--beige-deep) 20%,
      transparent 20%,           transparent calc(40% - 1px),
      var(--beige-deep) calc(40% - 1px), var(--beige-deep) 40%,
      transparent 40%,           transparent calc(60% - 1px),
      var(--beige-deep) calc(60% - 1px), var(--beige-deep) 60%,
      transparent 60%,           transparent calc(80% - 1px),
      var(--beige-deep) calc(80% - 1px), var(--beige-deep) 80%,
      transparent 80%
    ),
    linear-gradient(to bottom,
      rgba(232, 155, 92, 0.08)  0   20%,
      rgba(58,  42,  31, 0.08) 20% 40%,
      rgba(255, 250, 240, 0.5)  40% 60%,
      rgba(244, 184, 168, 0.08) 60% 80%,
      rgba(199, 121,  58, 0.08) 80% 100%
    );
}
body.horizontal .grid.hold-mode { touch-action: none; cursor: ew-resize; }

body.horizontal .beat-line {
  left: auto; right: auto;
  top: 0; bottom: 0;
  width: 1px;
  height: auto;
}
body.horizontal .beat-line.major { width: 2px; height: auto; }

body.horizontal .beat-label {
  left: auto;
  top: 4px;
  bottom: auto;
  transform: translateX(-50%) translateY(0);
}

body.horizontal .playhead {
  left: 0;
  right: auto;
  top: 0;
  bottom: 0;
  width: 3px;
  height: auto;
}
body.horizontal .playhead::after {
  right: auto;
  top: -2px;
  left: -6px;
}

body.horizontal .note.hold .head,
body.horizontal .note.hold .tail {
  left: auto; right: auto;
  top: -2px;  bottom: -2px;
  width: 8px; height: auto;
}
body.horizontal .note.hold .head { left: -4px; bottom: -2px; top: -2px; }
body.horizontal .note.hold .tail { right: -4px; bottom: -2px; top: -2px; }

body.horizontal .onset-line {
  left: auto; right: auto;
  top: 0; bottom: 0;
  height: auto;
  background: none;
  box-shadow: none;
}
body.horizontal .onset-line.onset-tap.weak {
  width: 1px;
  height: auto;
  background: rgba(58, 42, 31, 0.18);
}
body.horizontal .onset-line.onset-tap.medium {
  width: 2px;
  height: auto;
  background: rgba(228, 143, 122, 0.55);
}
body.horizontal .onset-line.onset-tap.strong {
  width: 3px;
  height: auto;
  background: var(--pink-deep);
  box-shadow: 0 0 6px rgba(228, 143, 122, 0.45);
}
body.horizontal .onset-line.onset-flick {
  width: 3px;
  height: auto;
  background: var(--orange-deep);
  box-shadow: 0 0 8px rgba(199, 121, 58, 0.55);
}
body.horizontal .onset-line.onset-flick::after {
  right: auto;
  top: auto;
  left: 50%;
  bottom: 6px;
  transform: translateX(-50%) rotate(-45deg);
}

body.horizontal .note.tap   { height: auto; }
body.horizontal .note.flick { height: 30px; }

@media (max-width: 720px) {
  header {
    padding: 10px 12px 12px;
    gap: 8px;
  }
  .ear { width: 22px; height: 22px; top: -10px; }
  .ear.right { right: 14px; }
  header h1 { font-size: 15px; }
  .cat-face { width: 32px; height: 32px; }
  .cat-face::before,
  .cat-face::after { top: 11px; }
  .cat-face::before { left: 9px; }
  .cat-face::after  { right: 9px; }
  .cat-face .nose { top: 17px; }

  .toolbar { gap: 6px; width: 100%; }
  button,
  .note-type-btn {
    padding: 9px 12px;
    font-size: 13px;
    min-height: 42px;
  }
  input[type="number"] { width: 58px; min-height: 40px; }
  select { min-height: 40px; }
  .info { margin-left: auto; font-size: 12px; }

  .lane-header { height: 34px; }
  .lane-label { font-size: 13px; line-height: 34px; }

  .hint {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    bottom: 8px;
    font-size: 10px;
    padding: 4px 8px;
  }

  .note.tap   { height: 18px; }
  .note.flick { height: 32px; }
}