:root {
  color-scheme: light;
  --paper: #f2efe7;
  --paper-strong: #fffdf7;
  --ink: #171b1a;
  --muted: #6b706d;
  --line: #d5d0c5;
  --forest: #173f37;
  --forest-deep: #0d2d28;
  --orange: #f45a35;
  --orange-soft: #f9d9ce;
  --lime: #d6ed9a;
  --shadow: 0 16px 45px rgba(23, 31, 28, 0.09);
  --tab-size: 0.96rem;
  --radius-large: 26px;
  --radius-medium: 18px;
  --radius-small: 11px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 92% 3%, rgba(214, 237, 154, 0.5), transparent 25rem),
    var(--paper);
  color: var(--ink);
  min-width: 320px;
}

button,
input,
output {
  font: inherit;
}

button,
a,
label {
  -webkit-tap-highlight-color: transparent;
}

button,
.file-button {
  cursor: pointer;
}

a {
  color: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

.page-shell {
  width: min(1480px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(23, 27, 26, 0.15);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--forest);
  color: white;
  font-size: 0.7rem;
  letter-spacing: -0.06em;
}

.topbar-actions,
.metadata-row,
.transport-buttons,
.progress-copy,
.zoom-control {
  display: flex;
  align-items: center;
}

.topbar-actions {
  gap: 9px;
}

.format-pill,
.metadata-pill {
  border: 1px solid rgba(23, 27, 26, 0.18);
  border-radius: 999px;
  background: rgba(255, 253, 247, 0.52);
  white-space: nowrap;
}

.format-pill {
  padding: 9px 13px;
  font: 700 0.7rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--muted);
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-quiet {
  background: transparent;
  border-color: rgba(23, 27, 26, 0.22);
}

.button-dark {
  background: var(--ink);
  color: white;
}

.button-light {
  background: white;
  color: var(--forest-deep);
}

.hero {
  min-height: 470px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(310px, 0.55fr);
  align-items: end;
  gap: clamp(40px, 8vw, 120px);
  padding: 84px 4vw 68px;
}

.eyebrow {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 0 0 23px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow span + span::before {
  content: "•";
  margin-right: 12px;
  color: var(--orange);
}

.hero h1 {
  max-width: 900px;
  margin: 0;
  font-family: Iowan Old Style, Baskerville, Georgia, serif;
  font-size: clamp(4.4rem, 10vw, 9.8rem);
  line-height: 0.79;
  letter-spacing: -0.075em;
  font-weight: 600;
}

.artist-line {
  margin: 30px 0 20px;
  font-size: clamp(1.1rem, 2.2vw, 1.55rem);
  color: var(--muted);
}

.artist-line strong {
  color: var(--ink);
}

.metadata-row {
  flex-wrap: wrap;
  gap: 9px;
}

.metadata-pill {
  display: inline-flex;
  gap: 7px;
  padding: 9px 13px;
  font-size: 0.75rem;
  color: var(--muted);
}

.metadata-pill strong {
  color: var(--ink);
}

.arrangement-panel {
  align-self: end;
  padding: 25px;
  border: 1px solid rgba(23, 27, 26, 0.14);
  border-radius: var(--radius-large);
  background: rgba(255, 253, 247, 0.7);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.panel-kicker,
.section-index {
  margin: 0;
  font-size: 0.65rem;
  line-height: 1.2;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(var(--arrangement-count, 2), minmax(0, 1fr));
  gap: 6px;
  padding: 5px;
  margin: 14px 0 15px;
  border-radius: 14px;
  background: #e9e5dc;
}

.segment-button {
  min-height: 44px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.segment-button[aria-selected="true"] {
  background: var(--paper-strong);
  color: var(--ink);
  box-shadow: 0 5px 16px rgba(23, 27, 26, 0.1);
}

.arrangement-description {
  min-height: 2.8em;
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.5;
}

body.single-arrangement .arrangement-panel {
  display: none;
}

body.single-arrangement .hero {
  grid-template-columns: minmax(0, 1fr);
}

body.single-arrangement .hero-copy {
  max-width: 1100px;
}

.practice-player {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(290px, 0.9fr) minmax(260px, 1.25fr) minmax(310px, 1fr);
  gap: 28px;
  align-items: center;
  padding: 19px 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-large);
  background: var(--forest);
  color: white;
  box-shadow: 0 20px 55px rgba(13, 45, 40, 0.25);
}

.transport {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 13px;
  align-items: center;
}

.play-button {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--orange);
  color: white;
  transition: transform 160ms ease;
}

.play-button:hover {
  transform: scale(1.04);
}

.play-icon {
  transform: translateX(1px);
  font-size: 1rem;
}

.transport-copy {
  min-width: 0;
}

.transport-copy span,
.practice-settings label > span:last-child {
  color: rgba(255, 255, 255, 0.66);
}

.transport-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.transport-copy strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.9rem;
}

.transport-buttons {
  gap: 6px;
}

.icon-button {
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 50%;
  background: transparent;
  color: inherit;
  font-size: 1rem;
  transition: background 160ms ease, border 160ms ease;
}

.icon-button:hover {
  background: rgba(255, 255, 255, 0.11);
}

.icon-button.small {
  width: 31px;
  height: 31px;
  border-color: rgba(23, 27, 26, 0.22);
  color: var(--ink);
}

.beat-and-progress {
  min-width: 0;
}

.progress-copy {
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 9px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.7rem;
  font-weight: 700;
}

.progress-track {
  height: 3px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--lime);
  transition: width 220ms ease;
}

.beat-dots {
  display: flex;
  gap: 6px;
  margin-top: 10px;
}

.beat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.24);
  transition: transform 100ms ease, background 100ms ease;
}

.beat-dot.active {
  background: var(--lime);
  transform: scale(1.45);
}

.practice-settings {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.tempo-control {
  display: grid;
  grid-template-columns: auto auto;
  gap: 2px 10px;
  min-width: 125px;
}

.tempo-control > span {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.68rem;
}

.tempo-control strong {
  justify-self: end;
  font-size: 0.72rem;
}

.tempo-control input {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--lime);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 0.72rem;
}

.toggle-row input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
}

.toggle {
  width: 30px;
  height: 18px;
  padding: 2px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  transition: background 160ms ease;
}

.toggle::after {
  content: "";
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: white;
  transition: transform 160ms ease;
}

.toggle-row input:checked + .toggle {
  background: var(--orange);
}

.toggle-row input:checked + .toggle::after {
  transform: translateX(12px);
}

.toggle-row input:focus-visible + .toggle {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

.practice-note {
  margin: 12px 22px 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.45;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 315px;
  gap: 24px;
  padding: 58px 0 80px;
}

.sheet,
.side-card {
  border: 1px solid rgba(23, 27, 26, 0.13);
  background: var(--paper-strong);
}

.sheet {
  min-width: 0;
  padding: clamp(22px, 4vw, 50px);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.sheet-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 30px;
}

.sheet-header h2,
.side-card h2,
.embed-strip h2 {
  margin: 7px 0 0;
  font-family: Iowan Old Style, Baskerville, Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.sheet-header h2 {
  font-size: clamp(2.1rem, 4vw, 3.5rem);
}

.zoom-control {
  gap: 7px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.tab-section + .tab-section {
  margin-top: 48px;
}

.tab-section-header {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 0 0 14px;
}

.tab-section-header h3 {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tab-section-header::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.tab-system {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.tab-system + .tab-system {
  margin-top: 12px;
}

.measure {
  position: relative;
  min-width: 0;
  overflow: hidden;
  padding: 18px 18px 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: #faf8f2;
  transition: transform 170ms ease, border 170ms ease, background 170ms ease, color 170ms ease;
  cursor: pointer;
}

.measure:hover {
  transform: translateY(-2px);
  border-color: rgba(23, 63, 55, 0.5);
}

.measure.active {
  border-color: var(--forest);
  background: var(--forest);
  color: white;
  box-shadow: 0 16px 32px rgba(23, 63, 55, 0.19);
}

.measure-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 11px;
}

.measure-number {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.64rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.measure-number::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line);
}

.measure.active .measure-number,
.measure.active .bar-hint {
  color: rgba(255, 255, 255, 0.63);
}

.measure.active .measure-number::before {
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(244, 90, 53, 0.18);
}

.bar-hint {
  font-size: 0.64rem;
  color: var(--muted);
}

.tab-lines {
  overflow-x: auto;
  padding: 4px 0 3px;
  scrollbar-width: thin;
}

.tab-row,
.marker-row {
  display: grid;
  grid-template-columns: 1.6ch max-content;
  gap: 0.7ch;
  width: max-content;
  min-width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: var(--tab-size);
  line-height: 1.47;
  letter-spacing: -0.03em;
  white-space: pre;
  font-variant-ligatures: none;
}

.string-label {
  color: var(--orange);
  font-weight: 850;
}

.marker-row {
  min-height: 1.3em;
  color: var(--orange);
  font-weight: 900;
}

.marker-row .string-label {
  color: transparent;
}

.lyrics-line {
  min-height: 1.5em;
  margin: 12px 0 0 2.3ch;
  color: var(--orange);
  font-family: Iowan Old Style, Baskerville, Georgia, serif;
  font-size: 1rem;
  font-style: italic;
  line-height: 1.35;
}

.measure.active .lyrics-line {
  color: var(--lime);
}

.chord-lyrics-block {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: #faf8f2;
}

.chord-span {
  display: inline-grid;
  gap: 3px;
}

.chord-span strong {
  color: var(--orange);
  font: 800 0.76rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.side-card {
  padding: 25px;
  border-radius: var(--radius-medium);
}

.side-card h2 {
  font-size: 1.7rem;
}

.legend-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px 15px;
  margin: 23px 0 0;
}

.legend-list dt {
  min-width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  margin: 0;
  border-radius: 8px;
  background: var(--orange-soft);
  color: #a92c12;
  font: 850 0.79rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.legend-list dd {
  align-self: center;
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.data-card {
  background: var(--lime);
}

.data-card p:not(.panel-kicker) {
  margin: 14px 0 0;
  color: #405344;
  font-size: 0.84rem;
  line-height: 1.55;
}

.data-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 23px 0;
}

.data-stats div {
  display: grid;
  gap: 2px;
}

.data-stats strong {
  font-family: Iowan Old Style, Baskerville, Georgia, serif;
  font-size: 2rem;
  font-weight: 600;
}

.data-stats span {
  color: #536756;
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.text-link {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  font-size: 0.77rem;
  font-weight: 800;
  text-underline-offset: 4px;
}

.shortcuts-card ul {
  display: grid;
  gap: 9px;
  margin: 19px 0 0;
  padding: 0;
  list-style: none;
}

.shortcuts-card li {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 5px;
  align-items: center;
}

.shortcuts-card li span {
  justify-self: end;
  color: var(--muted);
  font-size: 0.75rem;
}

kbd,
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

kbd {
  min-width: 25px;
  padding: 5px 7px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: #f4f1e9;
  font-size: 0.66rem;
  text-align: center;
}

.embed-strip {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 58px;
  padding: clamp(30px, 5vw, 58px);
  border-radius: var(--radius-large);
  background: var(--orange);
  color: white;
}

.embed-strip .panel-kicker {
  color: var(--forest-deep);
}

.embed-strip h2 {
  max-width: 650px;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 0.98;
}

.embed-strip p:not(.panel-kicker) {
  max-width: 650px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.87rem;
}

.embed-strip code {
  padding: 2px 5px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.16);
}

footer {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid rgba(23, 27, 26, 0.15);
  color: var(--muted);
  font-size: 0.72rem;
}

footer a {
  text-underline-offset: 3px;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 50;
  max-width: min(360px, calc(100% - 44px));
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--ink);
  color: white;
  box-shadow: var(--shadow);
  font-size: 0.8rem;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.error-panel {
  position: fixed;
  inset: auto 20px 20px 20px;
  z-index: 60;
  max-width: 680px;
  margin: auto;
  padding: 18px;
  border-radius: 14px;
  background: #721f16;
  color: white;
  box-shadow: var(--shadow);
}

.error-panel strong,
.error-panel span {
  display: block;
}

.error-panel span {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.8rem;
}

body.embed {
  background: var(--paper);
}

body.embed .page-shell {
  width: min(1120px, calc(100% - 24px));
}

body.embed .topbar,
body.embed .embed-strip,
body.embed footer,
body.embed .shortcuts-card,
body.embed .data-card {
  display: none;
}

body.embed .hero {
  min-height: auto;
  padding: 34px 12px 28px;
}

body.embed .hero h1 {
  font-size: clamp(3.6rem, 10vw, 7rem);
}

body.embed .content-grid {
  grid-template-columns: minmax(0, 1fr) 250px;
  padding: 28px 0 20px;
}

@media (max-width: 1120px) {
  .practice-player {
    grid-template-columns: 1fr 1fr;
  }

  .practice-settings {
    grid-column: 1 / -1;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.13);
  }

  .content-grid,
  body.embed .content-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  body.embed .sidebar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .page-shell {
    width: min(100% - 22px, 1480px);
  }

  .topbar {
    min-height: 72px;
  }

  .format-pill,
  .button-quiet {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 38px;
    padding: 60px 10px 40px;
  }

  .hero h1 {
    font-size: clamp(4.1rem, 24vw, 7.4rem);
  }

  .practice-player {
    position: relative;
    top: auto;
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 18px;
  }

  .practice-settings {
    grid-column: auto;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .tempo-control {
    flex: 1 0 150px;
  }

  .content-grid {
    padding-top: 34px;
  }

  .sheet {
    padding: 22px 12px;
  }

  .sheet-header {
    padding: 0 9px;
  }

  .tab-system {
    grid-template-columns: 1fr;
  }

  .measure {
    padding-inline: 14px;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  .embed-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .topbar-actions .button-dark {
    padding-inline: 13px;
  }

  .brand > span:last-child {
    display: none;
  }

  .eyebrow {
    align-items: flex-start;
    flex-direction: column;
  }

  .eyebrow span + span::before {
    display: none;
  }

  .arrangement-panel {
    padding: 20px;
  }

  .transport {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .transport-buttons {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }

  .sheet-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .zoom-control {
    align-self: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}