@layer reset, base, layout, components, utilities;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  * {
    margin: 0;
  }

  html {
    min-block-size: 100%;
  }

  body {
    min-block-size: 100dvh;
  }

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

@layer base {
  :root {
    color-scheme: light dark;
    --color-bg: light-dark(oklch(0.965 0.008 95), oklch(0.145 0.009 255));
    --color-panel: light-dark(oklch(0.995 0.003 95), oklch(0.205 0.01 255));
    --color-panel-soft: light-dark(oklch(0.94 0.009 95), oklch(0.17 0.01 255));
    --color-panel-raised: light-dark(oklch(1 0 0), oklch(0.245 0.012 255));
    --color-field: light-dark(oklch(0.985 0.004 95), oklch(0.155 0.01 255));
    --color-line: light-dark(oklch(0.84 0.014 95), oklch(0.33 0.014 255));
    --color-line-strong: light-dark(oklch(0.72 0.018 95), oklch(0.45 0.016 255));
    --color-text: light-dark(oklch(0.21 0.012 255), oklch(0.92 0.009 95));
    --color-muted: light-dark(oklch(0.49 0.016 255), oklch(0.68 0.012 255));
    --color-quiet: light-dark(oklch(0.63 0.014 255), oklch(0.55 0.012 255));
    --color-accent: light-dark(oklch(0.57 0.12 180), oklch(0.73 0.11 180));
    --color-accent-strong: light-dark(oklch(0.48 0.13 180), oklch(0.82 0.11 180));
    --color-warm: light-dark(oklch(0.68 0.13 76), oklch(0.79 0.12 76));
    --color-good: light-dark(oklch(0.56 0.12 148), oklch(0.74 0.12 148));
    --color-danger: light-dark(oklch(0.57 0.16 27), oklch(0.72 0.14 27));
    --color-video: oklch(0.075 0.006 255);
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --font-ui: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --motion-fast: 140ms;
    --motion-med: 220ms;
    --z-sticky: 20;
  }

  body {
    overflow-x: clip;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-ui);
    font-feature-settings: "tnum", "zero", "cv02", "cv03", "cv04";
    letter-spacing: 0;
    scrollbar-gutter: stable;
  }

  button,
  a,
  input,
  select {
    color: inherit;
  }

  button {
    border: 0;
    cursor: pointer;
  }

  button:disabled,
  input:disabled {
    cursor: not-allowed;
  }

  :focus-visible {
    outline: 2px solid var(--color-accent-strong);
    outline-offset: 2px;
  }

  ::selection {
    background: color-mix(in oklab, var(--color-accent) 35%, transparent);
  }
}

@layer layout {
  .topbar {
    min-block-size: 3.5rem;
    position: sticky;
    inset-block-start: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-2) var(--space-5);
    border-block-end: 1px solid var(--color-line);
    background: var(--color-bg);
  }

  .brand {
    min-inline-size: 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }

  .brand-mark {
    inline-size: 1.75rem;
    block-size: 1.75rem;
    flex: 0 0 auto;
    border: 1px solid color-mix(in oklab, var(--color-accent) 70%, var(--color-line));
    border-radius: var(--radius-md);
    background: var(--color-video);
    position: relative;
    overflow: clip;
  }

  .brand-mark::before {
    content: "";
    position: absolute;
    inset: 0.45rem 0.35rem;
    border-block: 2px solid var(--color-accent);
    transform: skewY(-18deg);
  }

  .brand h1 {
    font-size: 1rem;
    line-height: 1.2;
    text-wrap: balance;
  }

  .brand p,
  .muted,
  small {
    color: var(--color-muted);
  }

  .brand p {
    margin-block-start: var(--space-1);
    font-size: 0.8rem;
  }

  .topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .app-shell {
    block-size: calc(100dvh - 3.5rem);
    min-block-size: 38rem;
    display: grid;
    grid-template-areas: "media workspace inspector";
    grid-template-columns: minmax(14rem, 16.5rem) minmax(0, 1fr) minmax(14rem, 16.5rem);
    gap: var(--space-3);
    padding: var(--space-3);
    overflow: clip;
  }

  .media-panel {
    grid-area: media;
  }

  .workspace {
    grid-area: workspace;
    min-inline-size: 0;
    min-block-size: 0;
    display: grid;
    grid-template-columns: minmax(17rem, 23rem) minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
    gap: var(--space-3);
    container-type: inline-size;
    container-name: workspace;
  }

  .inspector {
    grid-area: inspector;
  }

  .media-panel,
  .inspector,
  .spectrogram-panel {
    min-block-size: 0;
    overflow: auto;
  }

  .viewer-cluster {
    grid-column: 1;
    grid-row: 1 / span 2;
    min-inline-size: 0;
    min-block-size: 0;
    display: grid;
    grid-template-rows: auto auto;
    align-content: start;
    gap: var(--space-3);
  }

  .transport {
    grid-column: 2;
    grid-row: 1;
  }

  .spectrogram-panel {
    grid-column: 2;
    grid-row: 2;
  }

  @media (max-width: 1180px) {
    .app-shell {
      block-size: auto;
      min-block-size: calc(100dvh - 3.5rem);
      grid-template-areas:
        "media workspace"
        "inspector inspector";
      grid-template-columns: minmax(14rem, 16.5rem) minmax(0, 1fr);
      overflow: visible;
    }

    .inspector {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--space-3);
      overflow: visible;
    }
  }

  @media (max-width: 920px) {
    .app-shell {
      grid-template-areas:
        "media"
        "workspace"
        "inspector";
      grid-template-columns: minmax(0, 1fr);
    }

    .media-panel,
    .inspector {
      overflow: visible;
    }

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

    .workspace {
      grid-template-columns: minmax(0, 1fr);
      grid-template-rows: auto auto minmax(20rem, 1fr);
    }

    .viewer-cluster {
      grid-column: 1;
      grid-row: 1;
      grid-template-columns: minmax(0, 1fr) minmax(10rem, 14rem);
      grid-template-rows: auto;
      align-items: stretch;
    }

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

    .transport {
      grid-column: 1;
      grid-row: 2;
    }

    .spectrogram-panel {
      grid-column: 1;
      grid-row: 3;
    }
  }

  @media (max-width: 760px) {
    .topbar {
      align-items: stretch;
      flex-direction: column;
      gap: var(--space-2);
      padding-inline: var(--space-3);
    }

    .topbar-actions {
      display: grid;
      grid-template-columns: 1fr auto;
    }

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

    .meter-panel {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
  }
}

@layer components {
  .panel {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    background: var(--color-panel);
    box-shadow: none;
  }

  .panel-section {
    padding: var(--space-3);
    border-block-end: 1px solid var(--color-line);
  }

  .panel-section:last-child {
    border-block-end: 0;
  }

  .section-heading {
    min-block-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-block-end: var(--space-3);
  }

  .section-heading h2 {
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.2;
    text-wrap: balance;
  }

  .chip {
    min-block-size: 1.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    padding-inline: var(--space-3);
    background: var(--color-panel-soft);
    color: var(--color-muted);
    font-size: 0.76rem;
    white-space: nowrap;
  }

  .drop-zone {
    min-block-size: 3.25rem;
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    align-items: center;
    gap: var(--space-3);
    margin-block-end: var(--space-2);
    padding: var(--space-2);
    border: 1px dashed var(--color-line-strong);
    border-radius: var(--radius-md);
    background: var(--color-field);
    cursor: pointer;
    transition:
      background var(--motion-fast) ease,
      border-color var(--motion-fast) ease,
      color var(--motion-fast) ease,
      translate var(--motion-fast) ease;
  }

  .drop-zone.is-dragover {
    border-style: solid;
    border-color: var(--color-accent);
    background: color-mix(in oklab, var(--color-accent) 14%, var(--color-field));
  }

  .drop-zone.has-file {
    border-style: solid;
    border-color: color-mix(in oklab, var(--color-good) 78%, var(--color-line));
  }

  .drop-zone input {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .drop-zone strong,
  .drop-zone small {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .drop-zone strong {
    font-size: 0.88rem;
  }

  .drop-zone small {
    margin-block-start: var(--space-1);
    font-size: 0.76rem;
  }

  .drop-icon {
    inline-size: 2rem;
    block-size: 2rem;
    display: grid;
    place-items: center;
    border: 1px solid color-mix(in oklab, var(--color-accent) 34%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--color-accent) 12%, var(--color-field));
    color: var(--color-accent-strong);
  }

  .drop-zone.has-file .drop-icon {
    border-color: color-mix(in oklab, var(--color-good) 42%, transparent);
    background: color-mix(in oklab, var(--color-good) 14%, var(--color-field));
    color: var(--color-good);
  }

  .primary-button,
  .secondary-button,
  .ghost-button,
  .icon-button,
  .nudge-grid button,
  .segment {
    min-block-size: 2.5rem;
    min-inline-size: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    border-radius: var(--radius-md);
    transition:
      background var(--motion-fast) ease,
      border-color var(--motion-fast) ease,
      color var(--motion-fast) ease,
      translate var(--motion-fast) ease;
  }

  .primary-button span,
  .secondary-button span,
  .ghost-button span {
    min-inline-size: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .primary-button {
    background: var(--color-accent);
    color: light-dark(oklch(0.12 0.01 255), oklch(0.1 0.01 255));
    font-weight: 800;
  }

  .primary-button:disabled,
  .secondary-button:disabled,
  .ghost-button:disabled,
  .icon-button:disabled,
  .nudge-grid button:disabled {
    border-color: var(--color-line);
    background: var(--color-panel-soft);
    color: var(--color-muted);
  }

  .secondary-button,
  .ghost-button,
  .icon-button,
  .nudge-grid button {
    border: 1px solid var(--color-line);
    background: var(--color-panel-raised);
  }

  .ghost-button {
    background: transparent;
  }

  .ghost-button.small {
    min-block-size: 2rem;
    padding-inline: var(--space-2);
    font-size: 0.78rem;
  }

  .icon-button {
    inline-size: 2.5rem;
    block-size: 2.5rem;
    flex: 0 0 auto;
  }

  .icon-button .icon-pause,
  .icon-button.is-playing .icon-play {
    display: none;
  }

  .icon-button.is-playing .icon-pause {
    display: inline-flex;
  }

  .full-width {
    inline-size: 100%;
  }

  .segmented {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-1);
    padding: var(--space-1);
    margin-block-end: var(--space-3);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-field);
  }

  .segment {
    min-block-size: 2rem;
    padding-inline: var(--space-2);
    background: transparent;
    color: var(--color-muted);
    font-size: 0.8rem;
  }

  .segment.active {
    background: var(--color-panel-raised);
    color: var(--color-text);
    box-shadow: inset 0 0 0 1px var(--color-line);
  }

  .candidate-list {
    display: grid;
    gap: var(--space-2);
    max-block-size: 18rem;
    overflow: auto;
    scrollbar-gutter: stable;
  }

  .candidate {
    inline-size: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2);
    padding: var(--space-2);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-field);
    text-align: start;
    transition:
      background var(--motion-fast) ease,
      border-color var(--motion-fast) ease;
  }

  .candidate.active {
    border-color: var(--color-accent);
    background: color-mix(in oklab, var(--color-accent) 12%, var(--color-field));
    box-shadow: inset 0 0 0 1px var(--color-accent);
  }

  .candidate strong,
  .candidate span {
    display: block;
  }

  .candidate strong {
    font-family: var(--font-mono);
    font-size: 0.9rem;
  }

  .candidate span {
    color: var(--color-muted);
    font-size: 0.74rem;
  }

  .empty-state {
    min-block-size: 7rem;
    display: grid;
    place-items: center;
    gap: var(--space-2);
    color: var(--color-muted);
    text-align: center;
  }

  .video-frame {
    inline-size: 100%;
    min-inline-size: 0;
    aspect-ratio: 16 / 9;
    position: relative;
    display: grid;
    place-items: center;
    overflow: clip;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    background: var(--color-video);
  }

  .video-frame video {
    inline-size: 100%;
    block-size: 100%;
    display: block;
    object-fit: contain;
    object-position: center center;
    background: var(--color-video);
  }

  .video-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    gap: var(--space-2);
    color: var(--color-quiet);
    text-align: center;
  }

  .video-placeholder svg {
    inline-size: 1.4rem;
    block-size: 1.4rem;
  }

  .meter-panel {
    min-inline-size: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2);
  }

  .meter-panel > div {
    min-inline-size: 0;
    display: grid;
    align-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-panel);
  }

  .metric-label {
    overflow: hidden;
    color: var(--color-muted);
    font-size: 0.66rem;
    letter-spacing: 0.06em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .meter-panel strong {
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.96rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .transport {
    min-block-size: 3.75rem;
    display: grid;
    grid-template-columns: auto auto minmax(8.5rem, auto) minmax(0, 1fr) minmax(9rem, 11rem);
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
  }

  .transport .icon-button {
    inline-size: 2.25rem;
    block-size: 2.25rem;
    min-block-size: 0;
  }

  .time-readout {
    min-inline-size: 8.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.78rem;
  }

  .time-readout span:last-child {
    text-align: end;
  }

  input[type="range"] {
    inline-size: 100%;
    accent-color: var(--color-accent);
  }

  input[type="number"],
  select {
    min-block-size: 2.5rem;
    inline-size: 100%;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding-inline: var(--space-3);
    background: var(--color-field);
  }

  .spectrogram-panel {
    min-block-size: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    padding: var(--space-3) var(--space-4);
  }

  .canvas-tools {
    display: flex;
    gap: var(--space-2);
  }

  .spectrogram-stack {
    min-block-size: 0;
    position: relative;
    display: grid;
    grid-template-rows: minmax(0, 1fr) minmax(0, 1fr) 4rem;
    gap: var(--space-2);
  }

  .spectrogram-row {
    min-block-size: 0;
    display: grid;
    grid-template-columns: 5.5rem minmax(0, 1fr);
    align-items: stretch;
    gap: var(--space-3);
  }

  .spectrogram-row > span {
    display: flex;
    align-items: center;
    color: var(--color-muted);
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  canvas {
    inline-size: 100%;
    block-size: 100%;
    min-block-size: 3.5rem;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: oklch(0.105 0.009 255);
    box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.04);
    touch-action: none;
  }

  #videoSpectrogram {
    cursor: text;
  }

  #trackSpectrogram,
  #trackOverview {
    cursor: ew-resize;
  }

  canvas.is-dragging {
    cursor: grabbing;
    border-color: var(--color-accent);
  }

  .overview-row canvas {
    min-block-size: 2.5rem;
  }

  .control {
    display: grid;
    gap: var(--space-2);
    margin-block-end: var(--space-3);
  }

  .control span {
    color: var(--color-muted);
    font-size: 0.8rem;
  }

  .nudge-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2);
    margin: var(--space-3) 0;
  }

  .nudge-grid button {
    min-block-size: 2.25rem;
    padding-inline: var(--space-2);
    font-family: var(--font-mono);
    font-size: 0.76rem;
  }

  .switch {
    display: inline-flex;
    align-items: center;
  }

  .switch input {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    clip: rect(0 0 0 0);
  }

  .switch span {
    inline-size: 2.75rem;
    block-size: 1.5rem;
    position: relative;
    display: block;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    background: var(--color-field);
  }

  .switch span::after {
    content: "";
    position: absolute;
    inset-block-start: 0.1875rem;
    inset-inline-start: 0.1875rem;
    inline-size: 1rem;
    block-size: 1rem;
    border-radius: 999px;
    background: var(--color-muted);
    transition:
      inset-inline-start var(--motion-fast) ease,
      background var(--motion-fast) ease;
  }

  .switch input:checked + span::after {
    inset-inline-start: 1.4375rem;
    background: var(--color-accent);
  }

  .range-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

  .download-link {
    min-block-size: 2.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-block-start: var(--space-3);
    padding-inline: var(--space-4);
    border: 1px solid color-mix(in oklab, var(--color-good) 55%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--color-good) 18%, var(--color-panel-raised));
    color: var(--color-text);
    font-weight: 700;
    text-decoration: none;
    animation: download-pop var(--motion-med) ease;
  }

  .download-link i {
    color: var(--color-good);
  }

  @keyframes download-pop {
    from {
      opacity: 0;
      translate: 0 6px;
    }

    to {
      opacity: 1;
      translate: 0 0;
    }
  }

  .spectrogram-empty {
    position: absolute;
    inset-block-start: var(--space-2);
    inset-inline-end: var(--space-2);
    max-inline-size: min(16rem, calc(100% - var(--space-4)));
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--color-panel) 88%, transparent);
    color: var(--color-muted);
    box-shadow: 0 0.5rem 1.5rem oklch(0 0 0 / 0.1);
    pointer-events: none;
  }

  .spectrogram-empty p {
    overflow: hidden;
    line-height: 1.45;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .spectrogram-empty svg {
    inline-size: 1rem;
    block-size: 1rem;
    flex: 0 0 auto;
    color: var(--color-accent);
  }

  .has-data .spectrogram-empty {
    display: none;
  }

  .log {
    max-block-size: 9rem;
    margin-block-start: var(--space-3);
    overflow: auto;
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.45;
    white-space: pre-wrap;
  }

  @container workspace (max-width: 42rem) {
    .viewer-cluster {
      grid-template-columns: minmax(0, 1fr);
    }

    .meter-panel {
      grid-template-columns: repeat(3, minmax(0, 1fr));
      grid-template-rows: none;
    }

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

    .time-readout {
      min-inline-size: 0;
    }

    #playheadSlider,
    #previewMode {
      grid-column: 1 / -1;
    }
  }

  @media (max-width: 560px) {
    .app-shell {
      padding: var(--space-2);
    }

    .topbar-actions,
    .transport,
    .range-pair,
    .meter-panel,
    .spectrogram-row {
      grid-template-columns: minmax(0, 1fr);
    }

    .topbar-actions .chip {
      justify-content: flex-start;
    }

    .transport .icon-button {
      inline-size: 100%;
    }

    .spectrogram-panel {
      min-block-size: 24rem;
    }

    .spectrogram-stack {
      grid-template-rows: minmax(5.5rem, 1fr) minmax(5.5rem, 1fr) minmax(4.5rem, 0.5fr);
    }

    .spectrogram-row > span {
      min-block-size: 1.25rem;
    }
  }
}

@layer utilities {
  .hidden {
    display: none !important;
  }

  svg {
    inline-size: 1rem;
    block-size: 1rem;
    stroke-width: 2;
  }

  @media (hover: hover) and (pointer: fine) {
    .primary-button:not(:disabled):hover,
    .secondary-button:not(:disabled):hover,
    .ghost-button:not(:disabled):hover,
    .icon-button:not(:disabled):hover,
    .nudge-grid button:not(:disabled):hover,
    .drop-zone:hover {
      border-color: var(--color-accent);
      translate: 0 -1px;
    }

    .drop-zone:hover,
    .secondary-button:not(:disabled):hover,
    .ghost-button:not(:disabled):hover,
    .icon-button:not(:disabled):hover,
    .nudge-grid button:not(:disabled):hover {
      background: color-mix(in oklab, var(--color-accent) 10%, var(--color-panel-raised));
    }
  }

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