:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --panel-strong: #edf7f6;
  --ink: #172026;
  --muted: #5d6973;
  --line: #cfd8df;
  --accent: #006d77;
  --accent-strong: #00545c;
  --accent-soft: #d9f0ef;
  --focus: #f5a524;
  --danger: #b42318;
  --success: #067647;
  --shadow: 0 12px 28px rgb(23 32 38 / 0.14);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
}

button,
input,
select {
  font: inherit;
}

button {
  touch-action: manipulation;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.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;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20000;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  border-radius: 6px;
  transform: translateY(-140%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app {
  display: grid;
  grid-template-rows: 64px minmax(0, 1fr) minmax(108px, auto);
  grid-template-columns: 88px minmax(0, 1fr);
  height: 100dvh;
  min-height: 480px;
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 700;
}

.logo svg {
  width: 34px;
  height: 34px;
  color: var(--accent);
  flex: 0 0 auto;
}

.logo span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sysmsg,
#sysmsg {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--muted);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sysmsg.show,
#sysmsg.show {
  color: var(--ink);
}

#sysmsg.success {
  color: var(--success);
}

#sysmsg.warning {
  color: #8a4b00;
}

#sysmsg.error {
  color: var(--danger);
}

.top-actions {
  display: inline-flex;
  gap: 8px;
  flex: 0 0 auto;
}

.left-panel {
  min-width: 0;
  background: #f2f5f7;
  border-right: 1px solid var(--line);
  padding: 12px 10px;
}

.tools {
  display: grid;
  gap: 10px;
  align-content: start;
}

.workspace {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  padding: 18px;
}

.track-area {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
  height: 100%;
  min-height: 0;
}

.track-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
}

.track-title-group {
  min-width: 0;
}

.track-title-group h2 {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.25;
}

.track-title-group p {
  margin: 2px 0 0;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.time-readout {
  flex: 0 0 auto;
  min-width: 8.25rem;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.waveform-frame {
  position: relative;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

#waveformCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  outline: none;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 10px;
  color: var(--muted);
  text-align: center;
  pointer-events: none;
}

.empty-state[hidden] {
  display: none;
}

.empty-state svg {
  width: 72px;
  height: 72px;
  margin: 0 auto;
  color: var(--accent);
}

.empty-state p {
  margin: 0;
  font-weight: 600;
}

.bottombar {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: stretch;
  padding: 12px 16px;
  background: var(--panel);
  border-top: 1px solid var(--line);
}

.context {
  min-width: 0;
  display: flex;
  align-items: center;
}

#toolContext {
  width: 100%;
}

.context-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px 12px;
}

.control {
  display: grid;
  gap: 4px;
  min-width: 130px;
}

.control label,
.control-title {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.control output {
  min-height: 1.35em;
  color: var(--muted);
}

.control input[type="range"] {
  width: min(260px, 48vw);
  accent-color: var(--accent);
}

.control input[type="number"] {
  width: 8rem;
  min-height: 44px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.status-pill {
  align-self: center;
  max-width: 22rem;
  padding: 8px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.transport-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.icon-btn,
.tool-btn,
.command-btn {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--panel);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
}

.icon-btn svg,
.tool-btn svg {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
}

.tool-btn {
  width: 56px;
  height: 56px;
}

.tool-btn[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.command-btn {
  padding: 0 14px;
  font-weight: 700;
}

.command-btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.command-btn.danger {
  color: var(--danger);
  border-color: #f0b8b0;
}

.icon-btn:hover,
.tool-btn:hover,
.command-btn:hover {
  box-shadow: 0 2px 10px rgb(23 32 38 / 0.12);
}

.icon-btn:disabled,
.tool-btn:disabled,
.command-btn:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.transport {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.sa-auth-dialog {
  width: min(420px, calc(100vw - 32px));
  padding: 0;
  border: 0;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.sa-auth-dialog::backdrop {
  background: rgb(23 32 38 / 0.45);
}

.sa-auth-dialog form {
  display: grid;
  gap: 16px;
  padding: 20px;
}

.sa-auth-dialog h2 {
  margin: 0;
  font-size: 1.2rem;
}

.sa-auth-dialog p {
  margin: 0;
  color: var(--muted);
}

.dialog-actions {
  display: flex;
  justify-content: end;
  gap: 10px;
}

.sd-button,
.sd-button-primary {
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 8px 14px;
  font-weight: 700;
  cursor: pointer;
}

.sd-button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.login-dropdown-menu {
  z-index: 10001;
  min-width: 160px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.login-menu-item {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  background: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  cursor: pointer;
  text-align: left;
}

.menu-item-icon {
  width: 20px;
  height: 20px;
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .app {
    min-height: 100dvh;
    height: auto;
    grid-template-rows: auto auto minmax(360px, 1fr) auto;
    grid-template-columns: minmax(0, 1fr);
  }

  .topbar,
  .left-panel,
  .workspace,
  .bottombar {
    grid-column: 1;
  }

  .topbar {
    flex-wrap: wrap;
    padding: 10px 12px;
  }

  .sysmsg,
  #sysmsg {
    order: 3;
    flex-basis: 100%;
    text-align: left;
  }

  .left-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 8px 12px;
  }

  .tools {
    display: flex;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .workspace {
    min-height: 360px;
    padding: 12px;
  }

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

  .time-readout {
    width: 100%;
    text-align: left;
  }

  .bottombar {
    grid-template-columns: minmax(0, 1fr);
    padding: 10px 12px;
  }

  .transport-actions {
    justify-content: start;
  }

  .control {
    min-width: min(100%, 13rem);
  }

  .control input[type="range"] {
    width: min(100%, 18rem);
  }
}

@media (max-width: 420px) {
  .logo span {
    max-width: 9rem;
  }

  .context-grid {
    display: grid;
    grid-template-columns: 1fr;
  }

  .command-btn,
  .status-pill {
    width: 100%;
  }

  .dialog-actions {
    display: grid;
  }
}

@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;
  }
}

@media (forced-colors: active) {
  .tool-btn[aria-pressed="true"],
  .command-btn.primary,
  .transport {
    forced-color-adjust: none;
    background: Highlight;
    border-color: Highlight;
    color: HighlightText;
  }
}