:root,
[data-theme="mono"] {
  color-scheme: dark;
  --bg: #050505;
  --text: #f5f5f5;
  --muted: #9a9a9a;
  --muted-faint: #666;
  --muted-dim: #555;
  --line: #2f2f2f;
  --accent: #ffffff;
  --surface: #0a0a0a;
  --surface-hover: #0d0d0d;
  --surface-raised: #101010;
  --surface-input: #0d0d0d;
  --glow: rgba(255, 255, 255, 0.06);
  --canvas-bg: #070707;
  --status-bg: rgba(5, 5, 5, 0.72);
  --status-border: rgba(255, 255, 255, 0.04);
  --status-text: #666;
  --status-clock: #777;
  --status-dot: #6cff8e;
  --status-dot-glow: rgba(108, 255, 142, 0.55);
  --focus-outline: #666;
  --download-bg: #f0f0f0;
  --download-text: #111;
  --download-shadow: rgba(255, 255, 255, 0.08);
  --overlay-bg: rgba(0, 0, 0, 0.62);
  --panel-bg: rgba(8, 8, 8, 0.96);
  --panel-border: #333;
  --cmd-mark: rgba(255, 255, 255, 0.14);
  --cmd-active-bg: rgba(255, 255, 255, 0.04);
  --cmd-active-border: #fff;
  --tool-hover-border: #555;
  --tool-spotlight: rgba(255, 255, 255, 0.07);
  --tool-index: #3a3a3a;
  --tool-index-hover: #666;
  --tool-desc-hover: #aaa;
  --section-line: rgba(255, 255, 255, 0.35);
  --ambient-grid: rgba(255, 255, 255, 0.028);
  --ambient-wave: 255, 255, 255;
  --ambient-spotlight: rgba(255, 255, 255, 0.04);
  --ambient-scanline: rgba(255, 255, 255, 0.025);
  --canvas-glow: rgba(255, 255, 255, 0.1);
  --canvas-glow-soft: rgba(255, 255, 255, 0.03);
  --accent-bar: #d9d9d9;
  --kbd-bg: #0c0c0c;
  --kbd-border: #333;
  --selected-border: #f5f5f5;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="violet"] {
  color-scheme: dark;
  --bg: #0a0610;
  --text: #f6ecff;
  --muted: #c4a8dc;
  --muted-faint: #8f72ad;
  --muted-dim: #6f5888;
  --line: #3d2858;
  --accent: #e879f9;
  --surface: #110818;
  --surface-hover: #160d20;
  --surface-raised: #1a0f26;
  --surface-input: #140a1c;
  --glow: rgba(232, 121, 249, 0.1);
  --canvas-bg: #0c0614;
  --status-bg: rgba(10, 6, 16, 0.82);
  --status-border: rgba(232, 121, 249, 0.12);
  --status-text: #9b7ec0;
  --status-clock: #b794d8;
  --status-dot: #e879f9;
  --status-dot-glow: rgba(232, 121, 249, 0.55);
  --focus-outline: #c084fc;
  --download-bg: #e879f9;
  --download-text: #1a0824;
  --download-shadow: rgba(232, 121, 249, 0.25);
  --overlay-bg: rgba(10, 4, 18, 0.78);
  --panel-bg: rgba(14, 8, 22, 0.97);
  --panel-border: #4c2d6e;
  --cmd-mark: rgba(232, 121, 249, 0.22);
  --cmd-active-bg: rgba(232, 121, 249, 0.08);
  --cmd-active-border: #e879f9;
  --tool-hover-border: #9b59c6;
  --tool-spotlight: rgba(232, 121, 249, 0.12);
  --tool-index: #5a3d78;
  --tool-index-hover: #c084fc;
  --tool-desc-hover: #d8b4fe;
  --section-line: rgba(232, 121, 249, 0.45);
  --ambient-grid: rgba(192, 132, 252, 0.04);
  --ambient-wave: 192, 132, 252;
  --ambient-spotlight: rgba(232, 121, 249, 0.07);
  --ambient-scanline: rgba(232, 121, 249, 0.04);
  --canvas-glow: rgba(232, 121, 249, 0.18);
  --canvas-glow-soft: rgba(192, 132, 252, 0.06);
  --accent-bar: #e879f9;
  --kbd-bg: #140a1c;
  --kbd-border: #4c2d6e;
  --selected-border: #e879f9;
}

[data-theme="cyan"] {
  color-scheme: dark;
  --bg: #030809;
  --text: #e4faff;
  --muted: #7eb8c9;
  --muted-faint: #4d8a9a;
  --muted-dim: #3a6670;
  --line: #1a3a42;
  --accent: #5eead4;
  --surface: #071014;
  --surface-hover: #0a161c;
  --surface-raised: #0d1a22;
  --surface-input: #091218;
  --glow: rgba(94, 234, 212, 0.08);
  --canvas-bg: #050c10;
  --status-bg: rgba(3, 8, 9, 0.82);
  --status-border: rgba(94, 234, 212, 0.1);
  --status-text: #4d8a9a;
  --status-clock: #6bb3c4;
  --status-dot: #5eead4;
  --status-dot-glow: rgba(94, 234, 212, 0.55);
  --focus-outline: #2dd4bf;
  --download-bg: #5eead4;
  --download-text: #042018;
  --download-shadow: rgba(94, 234, 212, 0.22);
  --overlay-bg: rgba(2, 8, 10, 0.78);
  --panel-bg: rgba(5, 12, 16, 0.97);
  --panel-border: #1f4a54;
  --cmd-mark: rgba(94, 234, 212, 0.2);
  --cmd-active-bg: rgba(94, 234, 212, 0.07);
  --cmd-active-border: #5eead4;
  --tool-hover-border: #2dd4bf;
  --tool-spotlight: rgba(94, 234, 212, 0.1);
  --tool-index: #2a5560;
  --tool-index-hover: #5eead4;
  --tool-desc-hover: #99f6e4;
  --section-line: rgba(94, 234, 212, 0.4);
  --ambient-grid: rgba(94, 234, 212, 0.035);
  --ambient-wave: 94, 234, 212;
  --ambient-spotlight: rgba(94, 234, 212, 0.06);
  --ambient-scanline: rgba(94, 234, 212, 0.035);
  --canvas-glow: rgba(94, 234, 212, 0.16);
  --canvas-glow-soft: rgba(94, 234, 212, 0.05);
  --accent-bar: #5eead4;
  --kbd-bg: #091218;
  --kbd-border: #1f4a54;
  --selected-border: #5eead4;
}

[data-theme="amber"] {
  color-scheme: dark;
  --bg: #0a0804;
  --text: #fff4e0;
  --muted: #c4a574;
  --muted-faint: #8a7048;
  --muted-dim: #6b5538;
  --line: #3d3020;
  --accent: #fbbf24;
  --surface: #120e08;
  --surface-hover: #161208;
  --surface-raised: #1a140a;
  --surface-input: #141008;
  --glow: rgba(251, 191, 36, 0.08);
  --canvas-bg: #0e0a06;
  --status-bg: rgba(10, 8, 4, 0.82);
  --status-border: rgba(251, 191, 36, 0.1);
  --status-text: #8a7048;
  --status-clock: #a88850;
  --status-dot: #fbbf24;
  --status-dot-glow: rgba(251, 191, 36, 0.55);
  --focus-outline: #f59e0b;
  --download-bg: #fbbf24;
  --download-text: #1a1204;
  --download-shadow: rgba(251, 191, 36, 0.22);
  --overlay-bg: rgba(8, 6, 2, 0.78);
  --panel-bg: rgba(12, 9, 4, 0.97);
  --panel-border: #5c4520;
  --cmd-mark: rgba(251, 191, 36, 0.2);
  --cmd-active-bg: rgba(251, 191, 36, 0.07);
  --cmd-active-border: #fbbf24;
  --tool-hover-border: #d97706;
  --tool-spotlight: rgba(251, 191, 36, 0.1);
  --tool-index: #6b5538;
  --tool-index-hover: #fbbf24;
  --tool-desc-hover: #fcd34d;
  --section-line: rgba(251, 191, 36, 0.4);
  --ambient-grid: rgba(251, 191, 36, 0.035);
  --ambient-wave: 251, 191, 36;
  --ambient-spotlight: rgba(251, 191, 36, 0.06);
  --ambient-scanline: rgba(251, 191, 36, 0.035);
  --canvas-glow: rgba(251, 191, 36, 0.16);
  --canvas-glow-soft: rgba(251, 191, 36, 0.05);
  --accent-bar: #fbbf24;
  --kbd-bg: #141008;
  --kbd-border: #5c4520;
  --selected-border: #fbbf24;
}

[data-theme="green"] {
  color-scheme: dark;
  --bg: #030804;
  --text: #c8ffc8;
  --muted: #6b9b6b;
  --muted-faint: #4a704a;
  --muted-dim: #385838;
  --line: #1a3a1a;
  --accent: #4ade80;
  --surface: #060c06;
  --surface-hover: #081008;
  --surface-raised: #0a140a;
  --surface-input: #070e07;
  --glow: rgba(74, 222, 128, 0.08);
  --canvas-bg: #040a04;
  --status-bg: rgba(3, 8, 4, 0.82);
  --status-border: rgba(74, 222, 128, 0.1);
  --status-text: #4a704a;
  --status-clock: #5a905a;
  --status-dot: #4ade80;
  --status-dot-glow: rgba(74, 222, 128, 0.55);
  --focus-outline: #22c55e;
  --download-bg: #4ade80;
  --download-text: #041208;
  --download-shadow: rgba(74, 222, 128, 0.22);
  --overlay-bg: rgba(2, 6, 3, 0.78);
  --panel-bg: rgba(4, 10, 5, 0.97);
  --panel-border: #1f4a28;
  --cmd-mark: rgba(74, 222, 128, 0.2);
  --cmd-active-bg: rgba(74, 222, 128, 0.07);
  --cmd-active-border: #4ade80;
  --tool-hover-border: #22c55e;
  --tool-spotlight: rgba(74, 222, 128, 0.1);
  --tool-index: #385838;
  --tool-index-hover: #4ade80;
  --tool-desc-hover: #86efac;
  --section-line: rgba(74, 222, 128, 0.4);
  --ambient-grid: rgba(74, 222, 128, 0.035);
  --ambient-wave: 74, 222, 128;
  --ambient-spotlight: rgba(74, 222, 128, 0.06);
  --ambient-scanline: rgba(74, 222, 128, 0.035);
  --canvas-glow: rgba(74, 222, 128, 0.16);
  --canvas-glow-soft: rgba(74, 222, 128, 0.05);
  --accent-bar: #4ade80;
  --kbd-bg: #070e07;
  --kbd-border: #1f4a28;
  --selected-border: #4ade80;
}

html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
  transition:
    background-color 0.45s var(--ease-out),
    color 0.45s var(--ease-out),
    border-color 0.45s var(--ease-out),
    box-shadow 0.45s var(--ease-out),
    fill 0.45s var(--ease-out),
    stroke 0.45s var(--ease-out) !important;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  background: var(--bg);
  color: var(--text);
  position: relative;
  overflow-x: hidden;
}

body.is-navigating .app {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.22s var(--ease-out), transform 0.22s var(--ease-out);
}

#ambient-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.app,
.status-bar {
  position: relative;
  z-index: 1;
}

.status-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.2rem;
  padding: 0.45rem clamp(1rem, 4vw, 1.6rem);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--status-text);
  border-bottom: 1px solid var(--status-border);
  background: var(--status-bg);
  backdrop-filter: blur(8px);
}

.status-bar__segment {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--status-dot);
  box-shadow: 0 0 8px var(--status-dot-glow);
  animation: pulse-dot 2.4s ease-in-out infinite;
}

.status-bar__clock {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  color: var(--status-clock);
}

.status-bar__audio {
  gap: 0.55rem;
}

.status-bar__select {
  appearance: none;
  border: 1px solid var(--status-border);
  background: transparent;
  color: var(--status-text);
  font: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: lowercase;
  box-sizing: border-box;
  width: calc(12ch + 1.55rem);
  max-width: calc(12ch + 1.55rem);
  padding: 0.12rem 1.4rem 0.12rem 0.35rem;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--status-text) 50%),
    linear-gradient(135deg, var(--status-text) 50%, transparent 50%);
  background-position:
    calc(100% - 9px) calc(50% + 1px),
    calc(100% - 5px) calc(50% + 1px);
  background-size:
    4px 4px,
    4px 4px;
  background-repeat: no-repeat;
}

.status-bar__select:focus-visible {
  outline: 1px solid var(--focus-outline);
  outline-offset: 2px;
}

.status-bar__audio-stats {
  font-variant-numeric: tabular-nums;
  color: var(--status-clock);
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.85);
  }
}

body.is-home .app.home {
  padding-top: 2.2rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: reveal-up 0.65s var(--ease-out) forwards;
  animation-delay: var(--reveal-delay, 0s);
}

.reveal-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s var(--ease-out), transform 0.55s var(--ease-out);
}

.reveal-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes reveal-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tool-enter {
  animation: tool-enter 0.5s var(--ease-out);
}

@keyframes tool-enter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

.section-hint {
  margin-left: 0.65rem;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted-dim);
}

.section-hint kbd {
  display: inline-block;
  padding: 0.08rem 0.35rem;
  border: 1px solid var(--kbd-border);
  background: var(--kbd-bg);
  font-size: 0.68rem;
  font-family: inherit;
}

.app {
  width: min(760px, 92vw);
  margin: 2.2rem auto 3rem;
  display: grid;
  gap: 1.4rem;
  transition: opacity 0.22s var(--ease-out), transform 0.22s var(--ease-out);
}

.home {
  width: min(820px, 92vw);
}

header h1 {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 700;
  text-transform: lowercase;
  position: relative;
}

body.is-home header h1::after {
  content: "_";
  display: inline-block;
  margin-left: 0.05em;
  animation: cursor-blink 1.1s step-end infinite;
  color: var(--muted);
}

@keyframes cursor-blink {
  0%,
  45% {
    opacity: 1;
  }
  46%,
  100% {
    opacity: 0;
  }
}

.kicker {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: lowercase;
}

.lead {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.lead-link {
  color: inherit;
  text-decoration: none;
}

.lead-link:hover {
  color: var(--text);
}

.lead-link:hover + .external-icon {
  color: var(--text);
  transform: translate(2px, -2px);
}

.external-icon {
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  margin-left: 0.15em;
  vertical-align: -0.1em;
  color: var(--muted);
  transition: color 0.2s ease, transform 0.2s var(--ease-out);
}

.home-footer {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  margin-top: 0.4rem;
}

.home-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: lowercase;
}

.home-footer a {
  color: inherit;
  text-decoration: underline;
}

.home-footer a:hover {
  color: var(--text);
}

h2 {
  margin: 0 0 0.8rem;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--muted);
  text-transform: lowercase;
}

section {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  position: relative;
}

section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--section-line), transparent);
  animation: section-line 4s ease-in-out infinite;
}

@keyframes section-line {
  0% {
    left: 0;
    width: 0;
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  50% {
    left: 20%;
    width: 60%;
    opacity: 0.8;
  }
  100% {
    left: 100%;
    width: 0;
    opacity: 0;
  }
}

a {
  color: inherit;
}

.back-link {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.84rem;
  transition: color 0.2s ease, transform 0.2s var(--ease-out);
}

.back-link:hover {
  color: var(--text);
  transform: translateX(-3px);
}

.tool-index {
  position: absolute;
  top: 50%;
  right: 0.85rem;
  transform: translateY(-50%);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--tool-index);
  transition: color 0.25s ease, opacity 0.25s ease;
  pointer-events: none;
  z-index: 1;
}

.tool-item:hover .tool-index {
  color: var(--tool-index-hover);
  opacity: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.52rem 0.78rem;
  background: var(--surface-raised);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  text-transform: lowercase;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.12s var(--ease-out), box-shadow 0.15s ease;
}

button:hover {
  border-color: var(--tool-hover-border);
  background: var(--surface-hover);
}

button.is-pressed {
  transform: scale(0.97);
}

.play-pause-btn {
  width: 2.55rem;
  height: 2.55rem;
  padding: 0;
  display: inline-grid;
  place-items: center;
  vertical-align: middle;
}

.play-pause-btn__icon {
  width: 0.95rem;
  height: 0.95rem;
  display: block;
}

.play-pause-btn__icon--pause {
  display: none;
}

.play-pause-btn.is-playing .play-pause-btn__icon--play {
  display: none;
}

.play-pause-btn.is-playing .play-pause-btn__icon--pause {
  display: block;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.tool-item:focus-visible,
.cmd-input:focus-visible {
  outline: 1px solid var(--focus-outline);
  outline-offset: 2px;
}

button.ghost {
  background: transparent;
  color: var(--muted);
}

.row {
  margin-bottom: 0.65rem;
}

.actions {
  display: flex;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.field {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  margin-bottom: 0.8rem;
  font-size: 0.86rem;
}

input:not([type="color"]):not([type="range"]),
select {
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--surface);
  color: var(--text);
  padding: 0.64rem 0.7rem;
  width: 100%;
  transition: border-color 0.15s ease, background 0.15s ease;
}

input:not([type="color"]):not([type="range"]):hover,
select:hover {
  border-color: var(--line);
}

input:not([type="color"]):not([type="range"]):focus,
select:focus {
  border-color: var(--tool-hover-border);
  background: var(--surface-input);
}

.color-input-wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.65rem;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.42rem 0.55rem;
  min-height: 2.45rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.color-input-wrap:hover {
  border-color: var(--tool-hover-border);
}

.color-input-wrap:focus-within {
  border-color: var(--tool-hover-border);
  background: var(--surface-input);
}

.color-input-preview {
  display: block;
  height: 1.35rem;
  border: 1px solid var(--line);
  background: var(--picked-color, #000);
  cursor: pointer;
  position: relative;
  z-index: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.color-input-wrap input[type="color"] {
  position: absolute;
  left: 0.55rem;
  top: 50%;
  transform: translateY(-50%);
  width: calc(100% - 5.75rem);
  height: 1.35rem;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  opacity: 0;
  cursor: pointer;
  z-index: 1;
}

.color-input-wrap input[type="color"]:disabled {
  cursor: not-allowed;
}

.color-input-wrap:has(input[type="color"]:disabled) {
  opacity: 0.55;
}

.color-input-wrap:has(input[type="color"]:disabled) .color-input-preview,
.color-input-wrap:has(input[type="color"]:disabled) .color-input-value {
  cursor: not-allowed;
}

.color-input-value {
  font-size: 0.72rem;
  color: var(--muted-faint);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  min-width: 4.6rem;
  text-align: right;
  cursor: pointer;
  user-select: all;
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

input[type="color"]::-webkit-color-swatch {
  border: 0;
}

input[type="color"]::-moz-color-swatch {
  border: 0;
}

.progress-wrap {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.5rem;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

.wave-wrap,
#tuner-canvas,
#metronome-canvas,
#visualizer-canvas,
#looper-visual,
#midi-roll-canvas,
#chord-keyboard-canvas,
#chord-staff-canvas,
#spectrogram-canvas,
#trackpad-canvas,
#emotion-canvas,
.synth-display {
  transition: box-shadow 0.35s ease;
}

.wave-wrap:hover,
#tuner-canvas:hover,
#metronome-canvas:hover,
#visualizer-canvas:hover,
#looper-visual:hover,
#midi-roll-canvas:hover,
#chord-keyboard-canvas:hover,
#piano-keyboard-canvas:hover,
#chord-staff-canvas:hover,
#spectrogram-canvas:hover,
#trackpad-canvas:hover,
#emotion-canvas:hover,
.synth-display:hover {
  box-shadow: 0 0 0 1px var(--canvas-glow), 0 0 32px var(--canvas-glow-soft);
}

progress {
  width: 100%;
  height: 10px;
  accent-color: var(--accent-bar);
}

progress:not([value="0"])::-webkit-progress-value {
  transition: width 0.3s var(--ease-out);
}

.output {
  margin: 0.6rem 0 0;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.75rem;
  background: var(--surface);
  color: #dcdcdc;
  white-space: pre-wrap;
  min-height: 3rem;
  font-size: 0.82rem;
}

.download {
  display: inline-block;
  margin-top: 0.8rem;
  text-decoration: none;
  color: var(--download-text);
  background: var(--download-bg);
  padding: 0.56rem 0.8rem;
  border-radius: 0;
  font-weight: 700;
  text-transform: lowercase;
  transition: transform 0.15s var(--ease-out), box-shadow 0.15s ease;
}

.download:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--download-shadow);
}

.hidden {
  display: none;
}

#result-meta {
  color: var(--muted);
  margin-bottom: 0.65rem;
}

#audio-preview {
  width: 100%;
  margin-top: 0.5rem;
}

#progress-label {
  font-size: 0.82rem;
  color: var(--muted);
}

.tool-list {
  display: grid;
  gap: 0.65rem;
}

.tool-item {
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.85rem;
  background: var(--surface);
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s var(--ease-out), background 0.25s ease;
}

.tool-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), var(--tool-spotlight), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.tool-item::after {
  content: "→";
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translate(8px, -50%);
  opacity: 0;
  color: var(--muted);
  transition: transform 0.25s var(--ease-out), opacity 0.25s ease;
  z-index: 1;
}

.tool-item span {
  display: block;
  font-size: 1rem;
  text-transform: lowercase;
  transition: transform 0.25s var(--ease-out);
  padding-right: 2rem;
}

.tool-item small {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
  padding-right: 1.4rem;
  transition: color 0.25s ease;
}

.tool-item:hover {
  border-color: var(--tool-hover-border);
  background: var(--surface-hover);
  transform: translateX(4px);
}

.tool-item:hover::before {
  opacity: 1;
}

.tool-item:hover::after {
  opacity: 1;
  transform: translate(0, -50%);
}

.tool-item:hover span {
  transform: translateX(2px);
}

.tool-item:hover small {
  color: var(--tool-desc-hover);
}

.tool-item:active {
  transform: translateX(2px) scale(0.995);
}

.cmd-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: start center;
  padding-top: min(18vh, 140px);
  background: var(--overlay-bg);
  backdrop-filter: blur(4px);
  animation: cmd-fade-in 0.18s ease;
}

.cmd-overlay.hidden {
  display: none;
}

@keyframes cmd-fade-in {
  from {
    opacity: 0;
  }
}

.cmd-panel {
  width: min(560px, 92vw);
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
}

.cmd-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--line);
}

.cmd-prompt {
  color: var(--muted-faint);
  font-size: 0.9rem;
}

.cmd-input {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 0;
  font-size: 0.92rem;
  color: var(--text);
}

.cmd-input:focus {
  outline: none;
  border: 0;
  background: transparent;
}

.cmd-list {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0;
  max-height: min(50vh, 360px);
  overflow-y: auto;
}

.cmd-item {
  display: grid;
  gap: 0.15rem;
  padding: 0.62rem 0.85rem;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.cmd-item span {
  font-size: 0.88rem;
  text-transform: lowercase;
}

.cmd-item small {
  color: var(--muted);
  font-size: 0.74rem;
}

.cmd-item mark {
  background: var(--cmd-mark);
  color: inherit;
  padding: 0 0.1em;
}

.cmd-item.is-active,
.cmd-item:hover {
  background: var(--cmd-active-bg);
  border-left-color: var(--cmd-active-border);
}

.cmd-hint {
  margin: 0;
  padding: 0.55rem 0.85rem;
  border-top: 1px solid var(--line);
  color: var(--muted-dim);
  font-size: 0.68rem;
}

body.cmd-open {
  overflow: hidden;
}

.ghost-item {
  opacity: 0.7;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.wave-wrap {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.6rem;
}

#waveform {
  width: 100%;
  height: 140px;
  display: block;
  background: var(--canvas-bg);
}

.time-range {
  margin-top: 0.55rem;
  display: grid;
  gap: 0.55rem;
}

input[type="range"] {
  padding: 0;
  accent-color: var(--accent);
}

.time-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.inline-note {
  color: var(--muted);
  font-size: 0.8rem;
}

.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.7rem;
}

.track {
  border: 1px solid var(--line);
  padding: 0.7rem;
  background: var(--surface);
}

.track.selected-track {
  border-color: var(--selected-border);
  box-shadow: 0 0 0 1px var(--selected-border) inset;
}

.track h3 {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  text-transform: lowercase;
}

.track-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  margin-bottom: 0.6rem;
}

#looper-visual {
  width: min(100%, 560px);
  aspect-ratio: 1 / 1;
  height: auto;
  display: block;
  margin: 0 auto;
  background: var(--canvas-bg);
}

#tuner-canvas {
  width: min(100%, 640px);
  aspect-ratio: 16 / 9;
  height: auto;
  display: block;
  margin: 0 auto;
  background: var(--canvas-bg);
}

#metronome-canvas {
  width: min(100%, 700px);
  aspect-ratio: 16 / 10;
  height: auto;
  display: block;
  margin: 0 auto;
  background: var(--canvas-bg);
}

#visualizer-canvas {
  width: 100%;
  aspect-ratio: 16 / 10;
  height: auto;
  display: block;
  background: var(--canvas-bg);
}

#visualizer-wrap:fullscreen {
  padding: 0;
  border: 0;
  background: #000;
  display: grid;
  place-items: center;
}

#visualizer-wrap:fullscreen #visualizer-canvas {
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  aspect-ratio: auto;
  object-fit: contain;
}

#midi-roll-canvas,
#piano-keyboard-canvas {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  display: block;
  background: #04050a;
}

#chord-keyboard-canvas {
  width: 100%;
  aspect-ratio: 24 / 6.2;
  height: auto;
  display: block;
  background: #050507;
}

.piano-keyboard-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
}

#piano-keyboard-canvas {
  cursor: pointer;
  touch-action: none;
}

#midi-piano-wrap:fullscreen {
  padding: 0;
  border: 0;
  background: #000;
  display: grid;
  place-items: center;
}

#midi-piano-wrap:fullscreen #piano-keyboard-canvas {
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  aspect-ratio: auto;
  object-fit: contain;
}

#chord-staff-canvas {
  width: 100%;
  aspect-ratio: 24 / 7.6;
  height: auto;
  display: block;
  background: #050507;
}

#spectrogram-canvas {
  width: 100%;
  aspect-ratio: 2 / 1;
  height: auto;
  display: block;
  background: #040406;
}

.trackpad-surface {
  border: 1px solid var(--line);
  background: #090b12;
  padding: 0.5rem;
  touch-action: none;
  user-select: none;
}

#trackpad-canvas {
  width: 100%;
  aspect-ratio: 1000 / 460;
  height: auto;
  display: block;
  background: #090b12;
}

#trackpad-surface:fullscreen {
  border: 0;
  padding: 0;
  background: #000;
  display: grid;
  place-items: center;
}

#trackpad-surface:fullscreen #trackpad-canvas {
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  aspect-ratio: auto;
  object-fit: contain;
}

#midi-roll-wrap:fullscreen {
  padding: 0;
  border: 0;
  background: #000;
  display: grid;
  place-items: center;
}

#midi-roll-wrap:fullscreen #midi-roll-canvas {
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  aspect-ratio: auto;
  object-fit: contain;
}

.emotion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-bottom: 0.7rem;
}

.emotion-panel {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.6rem;
}

.emotion-panel h3 {
  margin: 0 0 0.5rem;
  font-size: 0.84rem;
  text-transform: lowercase;
}

.emotion-list {
  display: grid;
  gap: 0.35rem;
}

.emotion-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr auto;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.78rem;
  color: #cdd6f2;
}

.emotion-row em {
  font-style: normal;
  color: var(--muted);
}

.emotion-bar {
  border: 1px solid var(--line);
  background: #101420;
  height: 0.64rem;
  position: relative;
}

.emotion-bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #65f8ff, #9b7dff 65%, #ff7eb3);
}

#emotion-canvas {
  width: 100%;
  aspect-ratio: 11 / 4;
  height: auto;
  display: block;
  background: #050507;
}

.synth-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.7rem;
  align-items: start;
}

.synth-panel {
  border: 1px solid var(--line);
  padding: 0.65rem;
  background: var(--surface);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 0.7rem;
  align-content: start;
  min-width: 0;
  overflow: hidden;
}

.synth-panel.wide {
  grid-column: auto;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.synth-panel h3 {
  margin: 0 0 0.6rem;
  font-size: 0.86rem;
  text-transform: lowercase;
  color: var(--text);
  grid-column: 1 / -1;
}

.synth-panel .synth-display,
.synth-panel .macro-row {
  grid-column: 1 / -1;
}

.synth-keyboard {
  margin-top: 0.3rem;
  border: 1px solid #27344d;
  background: #0b0b10;
  padding: 0.5rem;
  display: grid;
  grid-template-columns: repeat(25, minmax(16px, 1fr));
  gap: 2px;
}

.synth-key {
  border: 1px solid #1f1f29;
  padding: 0.35rem 0.1rem;
  font-size: 0.6rem;
  line-height: 1;
}

.synth-key.white {
  background: #ececf1;
  color: #1a1a1f;
}

.synth-key.black {
  background: #10131d;
  color: #d0d0d7;
}

.synth-key.active {
  background: #9bb7ff;
  color: #091023;
}

.synth-workstation .lead {
  color: var(--muted);
}

.synth-workstation .synth-section {
  border-top: 1px solid var(--line);
  background: transparent;
  padding: 1rem 0 0;
}

.synth-presets {
  margin-top: 0.65rem;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.6rem;
  align-items: end;
}

.synth-workstation .field {
  margin-bottom: 0;
  color: var(--muted);
  display: grid;
  gap: 0.25rem;
  min-width: 0;
}

.synth-panel .field:has(select),
.synth-panel .field:has(input[type="number"]) {
  grid-column: 1 / -1;
}

.synth-workstation input,
.synth-workstation select {
  background: var(--surface);
  border-color: var(--line);
  color: var(--text);
  width: 100%;
  min-width: 0;
}

.synth-workstation button {
  background: var(--surface-raised);
  border-color: var(--line);
}

.synth-knob-input-hidden {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.synth-knob-wrap {
  margin-top: 0.35rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  width: 100%;
}

.synth-knob {
  --knob-angle: 0deg;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 52%, #22283a 18%, #0f1422 64%, #070a13 100%);
  border: 1px solid #2d3b58;
  box-shadow: inset 0 1px 6px rgba(255, 255, 255, 0.08), 0 1px 4px rgba(0, 0, 0, 0.45);
  position: relative;
  cursor: ns-resize;
}

.synth-knob::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 3px;
  height: 18px;
  border-radius: 999px;
  background: linear-gradient(180deg, #9be8ff, #4ea1ff);
  transform: translate(-50%, -90%) rotate(var(--knob-angle));
  transform-origin: 50% 90%;
  box-shadow: 0 0 8px rgba(80, 180, 255, 0.5);
}

.synth-knob:focus-visible {
  outline: 2px solid #6fb7ff;
  outline-offset: 2px;
}

.synth-knob-value {
  font-size: 0.68rem;
  color: #a7b4cf;
  min-width: 3ch;
  text-align: center;
}

.macro-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.45rem;
  margin-top: 0.15rem;
}

.synth-display {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid #2d3a56;
  margin-bottom: 0.55rem;
  background: #0c1018;
}

.metronome-check {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  margin-bottom: 0.85rem;
}

.metronome-check input {
  width: auto;
  margin: 0;
}

.theme-switcher {
  position: fixed;
  bottom: 1.2rem;
  right: 1.2rem;
  z-index: 20;
}

.theme-switcher__toggle {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.theme-switcher__toggle:hover {
  color: var(--text);
  border-color: var(--tool-hover-border);
}

.theme-switcher__panel {
  position: absolute;
  bottom: calc(100% + 0.55rem);
  right: 0;
  width: min(17rem, 86vw);
  border: 1px solid var(--line);
  background: var(--panel-bg);
  padding: 0.75rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}

.theme-switcher__panel.hidden {
  display: none;
}

.theme-switcher__label {
  margin: 0 0 0.65rem;
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: lowercase;
  letter-spacing: 0.04em;
}

.theme-switcher__options {
  display: grid;
  gap: 0.35rem;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  padding: 0.52rem 0.62rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  text-align: left;
  font-size: 0.78rem;
  font-weight: 500;
}

.theme-option:hover {
  border-color: var(--tool-hover-border);
  background: var(--surface-hover);
}

.theme-option.is-active {
  border-color: var(--accent);
}

.theme-option__swatch {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1px solid var(--line);
}

.theme-switcher__label--latency {
  margin-top: 0.85rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.theme-switcher__hint {
  margin: -0.35rem 0 0.55rem;
  font-size: 0.62rem;
  line-height: 1.45;
  color: var(--muted-dim);
  text-transform: lowercase;
}

.theme-switcher__latency {
  display: grid;
  gap: 0.35rem;
}

.latency-option {
  display: grid;
  gap: 0.12rem;
  width: 100%;
  padding: 0.52rem 0.62rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  text-align: left;
}

.latency-option small {
  font-size: 0.62rem;
  line-height: 1.35;
  color: var(--muted-dim);
  text-transform: lowercase;
}

.latency-option__label {
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: lowercase;
}

.latency-option:hover {
  border-color: var(--tool-hover-border);
  background: var(--surface-hover);
}

.latency-option.is-active {
  border-color: var(--accent);
}

@media (max-width: 640px) {
  .actions {
    flex-wrap: wrap;
  }

  .grid-2,
  .time-grid {
    grid-template-columns: 1fr;
  }

  .synth-presets {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .synth-panel,
  .synth-panel.wide {
    grid-template-columns: 1fr 1fr;
  }

  .section-hint {
    display: block;
    margin: 0.35rem 0 0;
  }

  .status-bar__clock {
    margin-left: 0;
  }

  .theme-switcher {
    bottom: 0.85rem;
    right: 0.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-scroll {
    opacity: 1;
    transform: none;
  }

  body.is-home header h1::after {
    animation: none;
    opacity: 0;
  }
}