:root {
  --bg: #f8f2e8;
  --bg-deep: #f1e1cb;
  --panel: rgba(255, 249, 240, 0.82);
  --panel-border: rgba(84, 53, 26, 0.12);
  --text: #23160e;
  --muted: #765f4e;
  --primary: #ef6a4c;
  --primary-dark: #d65237;
  --accent: #199bd8;
  --shadow: 0 24px 60px rgba(104, 64, 31, 0.12);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --grid-line: rgba(24, 89, 128, 0.11);
  --playhead: rgba(25, 155, 216, 0.16);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at top left, rgba(255, 173, 120, 0.45), transparent 34%),
    radial-gradient(circle at top right, rgba(25, 155, 216, 0.16), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, #f6f3ea 35%, #f0ebe0 100%);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  overflow-x: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.glow {
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  filter: blur(10px);
  opacity: 0.55;
  pointer-events: none;
}

.glow-one {
  top: -80px;
  right: -40px;
  width: 280px;
  height: 280px;
  background: rgba(239, 106, 76, 0.28);
}

.glow-two {
  bottom: 80px;
  left: -50px;
  width: 220px;
  height: 220px;
  background: rgba(25, 155, 216, 0.2);
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1380px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 0.9fr);
  gap: 20px;
  align-items: stretch;
  margin-bottom: 20px;
}

.hero-copy,
.hero-card,
.panel {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-card {
  border-radius: var(--radius-xl);
  padding: 28px;
}

.eyebrow,
.panel-label,
.hero-card-label {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
.panel h2 {
  margin: 0;
  font-family: "Fraunces", serif;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(3rem, 5vw, 5.2rem);
  line-height: 0.95;
  max-width: 7ch;
}

.hero-text {
  max-width: 48ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.65;
}

.hero-card pre {
  margin: 0;
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(35, 22, 14, 0.92);
  color: #f5f1ea;
  font-family: "SFMono-Regular", ui-monospace, monospace;
  font-size: 0.92rem;
  line-height: 1.5;
  overflow: auto;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(320px, 0.78fr);
  gap: 20px;
}

.panel {
  border-radius: var(--radius-xl);
  padding: 24px;
}

.stage-header,
.json-header,
.transport,
.json-actions,
.control-bar,
.meta-strip,
.drum-shell-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.stage-header,
.json-header {
  justify-content: space-between;
}

.transport,
.json-actions,
.meta-strip,
.control-bar {
  flex-wrap: wrap;
}

.primary-button,
.ghost-button,
.record-button {
  border: 0;
  border-radius: 999px;
  padding: 11px 18px;
  font-weight: 700;
  transition:
    transform 140ms ease,
    background-color 140ms ease,
    opacity 140ms ease;
}

.primary-button {
  background: var(--primary);
  color: #fffaf5;
}

.record-button {
  background: #bd1f34;
  color: #fff8f4;
}

.primary-button:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.record-button:hover {
  background: #9e1529;
  transform: translateY(-1px);
}

.ghost-button {
  background: rgba(35, 22, 14, 0.06);
  color: var(--text);
}

.ghost-button:hover {
  background: rgba(35, 22, 14, 0.1);
}

.primary-button:disabled,
.ghost-button:disabled,
.record-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.meta-strip {
  margin: 18px 0 20px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(35, 22, 14, 0.06);
  color: var(--muted);
  font-size: 0.94rem;
}

.instrument-card {
  margin-bottom: 18px;
  padding: 16px;
  border-radius: 22px;
  border: 1px solid rgba(24, 89, 128, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.58)),
    linear-gradient(135deg, rgba(239, 106, 76, 0.08), rgba(25, 155, 216, 0.08));
}

.instrument-header,
.instrument-status {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.instrument-header {
  justify-content: space-between;
  margin-bottom: 14px;
}

.instrument-header h3 {
  margin: 0;
  font-family: "Fraunces", serif;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

.instrument-status {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.instrument-picker {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
}

.instrument-chip {
  display: grid;
  gap: 6px;
  min-height: 78px;
  padding: 14px;
  border: 1px solid rgba(35, 22, 14, 0.1);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.52)),
    rgba(25, 155, 216, 0.02);
  color: var(--text);
  text-align: left;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.instrument-chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(104, 64, 31, 0.08);
  border-color: rgba(25, 155, 216, 0.24);
}

.instrument-chip.is-active {
  border-color: rgba(239, 106, 76, 0.28);
  background:
    linear-gradient(135deg, rgba(239, 106, 76, 0.18), rgba(25, 155, 216, 0.1)),
    rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 26px rgba(239, 106, 76, 0.12);
}

.instrument-chip.is-queued:not(.is-active) {
  border-color: rgba(25, 155, 216, 0.24);
  background:
    linear-gradient(135deg, rgba(25, 155, 216, 0.14), rgba(25, 155, 216, 0.05)),
    rgba(255, 255, 255, 0.78);
}

.instrument-chip-name {
  font-size: 1rem;
  font-weight: 700;
}

.instrument-chip-detail {
  color: var(--muted);
  font-size: 0.84rem;
}

.sequencer-shell {
  display: grid;
  gap: 18px;
}

.grid-shell {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  grid-template-rows: 38px minmax(320px, auto);
  gap: 10px;
}

.grid-top-left,
.step-marker,
.row-label,
.drum-label {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.56);
  color: var(--muted);
}

.grid-top-left {
  font-size: 0.9rem;
}

.step-markers {
  display: grid;
  grid-template-columns: repeat(var(--steps, 8), minmax(28px, 1fr));
  gap: 6px;
}

.step-marker {
  font-size: 0.85rem;
}

.row-labels {
  display: grid;
  grid-template-rows: repeat(var(--rows, 8), minmax(26px, 1fr));
  gap: 6px;
}

.row-label {
  font-size: 0.9rem;
  font-weight: 700;
}

.grid-stage {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  padding: 10px;
  min-height: 320px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(255, 255, 255, 0.62)),
    linear-gradient(135deg, rgba(25, 155, 216, 0.04), rgba(239, 106, 76, 0.04));
  border: 1px solid rgba(24, 89, 128, 0.12);
}

.melody-cells {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(var(--steps, 8), minmax(28px, 1fr));
  grid-template-rows: repeat(var(--rows, 8), minmax(28px, 1fr));
  gap: 6px;
  min-height: 300px;
}

.melody-cell,
.drum-cell {
  border: 0;
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.3)),
    rgba(24, 89, 128, 0.02);
  box-shadow: inset 0 0 0 1px var(--grid-line);
  transition:
    transform 100ms ease,
    background-color 100ms ease,
    box-shadow 100ms ease;
}

.melody-cell:hover,
.drum-cell:hover {
  transform: translateY(-1px);
  box-shadow: inset 0 0 0 1px rgba(25, 155, 216, 0.3);
}

.melody-notes {
  position: absolute;
  inset: 10px;
  z-index: 2;
  pointer-events: none;
}

.note-block {
  position: absolute;
  display: flex;
  align-items: center;
  padding-left: 12px;
  border-radius: 12px;
  color: rgba(20, 15, 12, 0.78);
  font-size: 0.82rem;
  font-weight: 700;
  overflow: hidden;
  white-space: nowrap;
  box-shadow:
    inset 0 -2px 0 rgba(255, 255, 255, 0.25),
    0 8px 18px rgba(76, 49, 18, 0.1);
}

.playhead {
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 10px;
  z-index: 0;
  width: calc((100% - 20px - (var(--steps, 8) - 1) * 6px) / var(--steps, 8));
  border-radius: 14px;
  background: var(--playhead);
  opacity: 0;
  transform: translateX(0);
  transition:
    transform 90ms linear,
    opacity 120ms ease;
}

.playhead.is-visible {
  opacity: 1;
}

.drum-shell {
  padding: 14px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(24, 89, 128, 0.11);
}

.drum-shell-header {
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--muted);
}

.drum-shell-hint {
  font-size: 0.92rem;
}

.drum-grid-wrap {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 10px;
}

.drum-labels,
.drum-cells {
  display: grid;
  gap: 6px;
}

.drum-labels {
  grid-template-rows: repeat(var(--drums, 3), minmax(26px, 1fr));
}

.drum-cells {
  grid-template-columns: repeat(var(--steps, 8), minmax(28px, 1fr));
  grid-template-rows: repeat(var(--drums, 3), minmax(28px, 1fr));
}

.drum-cell.is-active {
  background:
    radial-gradient(circle at center, rgba(25, 155, 216, 0.95) 0 42%, transparent 44%),
    rgba(255, 255, 255, 0.28);
  box-shadow: inset 0 0 0 1px rgba(25, 155, 216, 0.24);
}

.control-bar {
  margin-top: 18px;
}

.control {
  display: grid;
  gap: 8px;
  min-width: 180px;
  color: var(--muted);
}

.control input[type="range"] {
  width: min(320px, 100%);
  accent-color: var(--accent);
}

.control select,
.control input[type="file"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(35, 22, 14, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.82);
}

.file-control {
  min-width: 240px;
}

.status-message {
  margin: 18px 0 0;
  min-height: 24px;
  color: var(--muted);
}

.status-message.is-error {
  color: #aa2c1b;
}

.recording-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 34px;
  margin-top: 8px;
}

.recording-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(189, 31, 52, 0.12);
  color: #9e1529;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.recording-badge::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse-dot 1s ease-in-out infinite;
}

.download-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(25, 155, 216, 0.12);
  color: #0d6d99;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.download-link:hover {
  background: rgba(25, 155, 216, 0.2);
}

.is-hidden {
  display: none;
}

@media (max-width: 980px) {
  .instrument-header {
    flex-direction: column;
  }

  .instrument-status {
    justify-content: flex-start;
  }
}

.json-panel {
  display: grid;
  grid-template-rows: auto minmax(280px, 1fr) auto auto;
  gap: 14px;
}

#jsonInput {
  width: 100%;
  min-height: 440px;
  resize: vertical;
  padding: 18px;
  border: 1px solid rgba(35, 22, 14, 0.12);
  border-radius: 22px;
  background: rgba(35, 22, 14, 0.95);
  color: #f6efe7;
  font-family: "SFMono-Regular", ui-monospace, monospace;
  font-size: 0.93rem;
  line-height: 1.52;
}

.hint-card {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(35, 22, 14, 0.05);
}

.hint-title {
  margin: 0 0 10px;
  font-weight: 700;
}

.hint-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 1080px) {
  .workspace,
  .hero {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 14px;
    padding-bottom: 20px;
  }

  .panel,
  .hero-copy,
  .hero-card {
    padding: 18px;
    border-radius: 22px;
  }

  .stage-header,
  .json-header,
  .drum-shell-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid-shell,
  .drum-grid-wrap {
    grid-template-columns: 66px minmax(0, 1fr);
  }

  .step-marker,
  .row-label,
  .drum-label,
  .grid-top-left {
    font-size: 0.78rem;
  }

  .melody-cells,
  .drum-cells {
    gap: 4px;
  }

  .playhead {
    width: calc((100% - 20px - (var(--steps, 8) - 1) * 4px) / var(--steps, 8));
  }

  .note-block {
    padding-left: 8px;
    font-size: 0.74rem;
  }

  #jsonInput {
    min-height: 320px;
  }
}

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

  50% {
    opacity: 0.35;
    transform: scale(0.72);
  }
}