@layer views {
  .skip-link:focus-visible {
    position: fixed;
    inset-block-start: var(--space-s);
    inset-inline-start: var(--space-s);
    z-index: 10;
    padding: var(--space-xs) var(--space-s);
    border-radius: var(--radius-s);
    background: var(--surface);
  }

  /* Header */
  .app-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs) var(--space-l);
    padding-block: var(--space-s);
    padding-inline: max(var(--space-m), (100% - 72rem) / 2);
    border-block-end: 1px solid var(--border);
    background: var(--surface);
  }

  .brand {
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.01em;
  }

  .brand > .icon { color: var(--record); }

  /* Dark mode switch: sun, track with knob, moon. */
  .theme-switch {
    margin-inline-start: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    min-block-size: 2.25rem;
    padding-inline: 0.4em;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--text-muted);
    font-size: var(--step-0);
    cursor: pointer;
  }

  .theme-switch > .track {
    position: relative;
    flex: none;
    inline-size: 2.5rem;
    block-size: 1.4rem;
    border-radius: 999px;
    background: var(--surface-sunken);
    outline: 1px solid var(--border);
    outline-offset: -1px;
  }

  .theme-switch .knob {
    position: absolute;
    inset-block-start: 0.2rem;
    inset-inline-start: 0.2rem;
    inline-size: 1rem;
    block-size: 1rem;
    border-radius: 50%;
    background: var(--text-muted);
  }

  .theme-switch[aria-checked="true"] > .track { background: var(--primary); outline-color: var(--primary); }
  .theme-switch[aria-checked="true"] .knob { inset-inline-start: calc(100% - 1.2rem); background: var(--on-primary); }
  .theme-switch[aria-checked="false"] > .sun,
  .theme-switch[aria-checked="true"] > .moon { color: var(--text); }

  .theme-switch:active .knob { scale: 0.9; }

  @media (prefers-reduced-motion: no-preference) {
    .theme-switch .knob { transition: inset-inline-start 180ms var(--ease-out), scale 120ms var(--ease-out); }
  }

  .steps {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs) var(--space-m);
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: step;
    font-size: var(--step--1);
    color: var(--text-muted);
  }

  .steps > li {
    display: flex;
    align-items: center;
    gap: 0.45em;
    counter-increment: step;
  }

  .steps > li::before {
    content: counter(step);
    display: grid;
    place-items: center;
    inline-size: 1.6em;
    block-size: 1.6em;
    border: 1px solid var(--border);
    border-radius: 50%;
    font-size: 0.85em;
    font-variant-numeric: tabular-nums;
  }

  .steps > li[data-done] { color: var(--text); }

  .steps > li[data-done]::before {
    border-color: var(--success);
    background: var(--success-subtle);
    color: var(--success);
  }

  .steps > li[aria-current="step"] {
    color: var(--text);
    font-weight: 700;
  }

  .steps > li[aria-current="step"]::before {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--on-primary);
  }

  /* Main area */
  .app-main {
    display: flex;
    flex-direction: column;
    gap: var(--space-l);
    inline-size: min(100% - 2 * var(--space-m), 72rem);
    margin-inline: auto;
    padding-block: var(--space-m) var(--space-l);
  }

  .view {
    display: flex;
    flex-direction: column;
    gap: var(--space-m);
  }

  .view h1 { font-size: var(--step-2); }

  .view-intro {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    max-inline-size: 60ch;
  }

  .view-intro > p { color: var(--text-muted); }

  /* Setup view: one card with the name row, the sources, and the actions. */
  .setup {
    gap: var(--space-m);
  }

  .setup h2 { font-size: var(--step-1); }

  .name-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
  }

  .name-row code { overflow-wrap: anywhere; }

  .sources-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs) var(--space-m);
    padding-block-start: var(--space-s);
    border-block-start: 1px solid var(--border);
  }

  .sources-header > :first-child {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-2xs) var(--space-s);
  }

  .sources-header > .button { margin-inline-start: auto; }

  /* The three sources share five rows, so that their parts line up:
     heading, preview, main control, quality or option, and extra option. */
  .sources {
    display: grid;
    gap: var(--space-xs) var(--space-l);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  }

  .source {
    display: grid;
    grid-row: span 5;
    grid-template-rows: subgrid;
    align-content: start;
    row-gap: var(--space-xs);
  }

  .source-header {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
  }

  .source-header > .chip { margin-inline-start: auto; }

  /* On a short window the previews get smaller, so that setup fits without a scroll.
     41rem is the height of the rest of the page. */
  .source > .frame {
    justify-self: center;
    inline-size: min(100%, max(14rem, (100dvh - 41rem) * 16 / 9));
  }

  .source[data-live] .frame { outline: 2px solid var(--success); outline-offset: 2px; }
  .source[data-error] .frame { outline: 2px solid var(--danger); outline-offset: 2px; }

  .frame > .facts {
    place-self: start start;
    max-inline-size: calc(100% - 2 * var(--space-xs));
    padding-block: 0.1em;
    padding-inline: 0.45em;
    font-size: 0.75rem;
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    overflow: clip;
    text-overflow: ellipsis;
  }

  .mic-frame > .facts {
    background: color-mix(in oklch, var(--text) 10%, transparent);
    color: var(--text-muted);
  }

  #permission-slot:empty { display: none; }

  .source .field > label,
  .source .field-label {
    font-size: var(--step--1);
    font-weight: 600;
  }

  .source .select { min-block-size: 2.5rem; padding-block: 0.3em; }

  .field-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .field-buttons > .button { flex: 1 1 auto; white-space: nowrap; }

  .source > .check { font-size: var(--step--1); align-self: center; }

  .hint { font-size: var(--step--1); }

  .mic-frame { background: var(--surface-sunken); color: var(--text); }

  .mic-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: safe center;
    gap: var(--space-xs);
    padding: var(--space-s);
    padding-block-start: calc(var(--space-xs) + 1rem);
    padding-block-end: var(--space-xs);
  }

  .mic-visual > .meter {
    flex: none;
    inline-size: 100%;
    block-size: 1rem;
  }

  .mic-icon { block-size: 2rem; color: var(--text-muted); }

  .mic-hint {
    min-block-size: 2lh;
    line-height: 1.3;
    font-size: var(--step--1);
    text-align: center;
  }

  .source[data-live] .mic-icon { color: var(--success); }

  .system-audio {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
    font-size: var(--step--1);
  }

  #system-audio-hint:empty { display: none; }

  .folder-line {
    margin-inline-start: auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--step--1);
  }

  .folder-line > .icon { color: var(--text-muted); }

  #setup-errors:empty { display: none; }

  .error-list {
    margin: 0;
    padding-inline-start: 1.2em;
  }
}

@layer views {
  /* Countdown */
  .countdown {
    inline-size: min(100% - 2rem, 24rem);
    text-align: center;
  }

  .countdown > form { align-items: center; }

  .countdown-number {
    margin: 0;
    color: var(--record);
    font-size: clamp(5rem, 3rem + 10vw, 9rem);
    font-weight: 800;
    line-height: 1;
  }

  @media (prefers-reduced-motion: no-preference) {
    .countdown[open] .countdown-number { animation: count-pulse 1s var(--ease-out) infinite; }
  }

  @keyframes count-pulse {
    from { scale: 1.15; opacity: 0.4; }
    30% { scale: 1; opacity: 1; }
  }
}

@layer views {
  /* Test view */
  .test-previews,
  .review-players {
    display: grid;
    gap: var(--space-m);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  }

  .test-live[data-recording] .frame {
    outline: 3px solid var(--record);
    outline-offset: 2px;
  }

  .review-players figure {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
    margin: 0;
  }

  .review-players video {
    inline-size: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-m);
    background: var(--video-bg);
  }

  .review-players audio { inline-size: 100%; }

  .review-players figcaption {
    color: var(--text-muted);
    font-size: var(--step--1);
  }

  .review-audio { grid-column: 1 / -1; }

  .checks {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .checks > li {
    display: flex;
    align-items: start;
    gap: 0.6em;
  }

  .checks > li > .icon {
    inline-size: 1.15em;
    block-size: 1lh;
  }

  .checks > li[data-ok="true"] > .icon { color: var(--success); }
  .checks > li[data-ok="false"] > .icon { color: var(--warning); }
}

@layer views {
  /* Studio view: the stage and the panel fit in the window. */
  .view-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-2xs) var(--space-m);
  }

  .studio {
    display: flex;
    flex-wrap: wrap;
    align-items: start;
    gap: var(--space-m);
  }

  .studio-stage {
    flex-basis: 0;
    flex-grow: 999;
    min-inline-size: 60%;
  }

  /* 10rem is the height of the header, the heading, and the margins. */
  .stage-frame {
    position: relative;
    inline-size: min(100%, max(20rem, (100dvh - 10rem) * 16 / 9));
  }

  .studio-panel {
    flex-basis: 17rem;
    flex-grow: 1;
    gap: var(--space-xs);
    padding: var(--space-m);
  }

  .stage-frame > .badge { place-self: start; margin: var(--space-s); }

  .stage-frame > video[data-showing="camera"] { scale: -1 1; }

  .studio[data-recording] .stage-frame {
    outline: 3px solid var(--record);
    outline-offset: 3px;
  }

  .timer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xs);
  }

  .timer {
    margin: 0;
    font-size: var(--step-3);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.02em;
  }

  .studio[data-recording] .timer { color: var(--record); }

  .studio[data-paused] .stage-frame { outline-color: var(--warning); }
  .studio[data-paused] .timer { color: var(--warning); }
  .studio[data-paused] .badge.rec { background: var(--amber); color: var(--on-amber); }

  /* On a short window the sidebar camera gets smaller, so that the studio fits.
     37rem is the height of the rest of the sidebar and the page. */
  .side-camera {
    justify-self: center;
    inline-size: min(100%, max(10rem, (100dvh - 37rem) * 16 / 9));
  }

  .side-camera > .badge {
    place-self: start;
    margin: var(--space-2xs);
  }

  .studio[data-recording] .side-camera {
    outline: 2px solid var(--record);
    outline-offset: 2px;
  }

  /* One source on each line: icon, name, and the device in use. */
  .source-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: var(--step--1);
  }

  .source-list > li {
    display: flex;
    align-items: center;
    gap: 0.4em;
  }

  .source-list .icon { flex: none; }

  .source-name { flex: none; }

  /* A connected source shows only its device. A source that is off shows
     only its struck name. The tooltip and the screen reader text give both. */
  .source-list > li:not([data-off]) > .source-name { display: none; }

  .source-device {
    white-space: nowrap;
    overflow: clip;
    text-overflow: ellipsis;
  }

  .source-device:empty { display: none; }

  /* Green: the source records. Amber alert and struck text: the source is off. */
  .source-list > li > .icon { color: var(--success); }
  .source-list > li[data-off] > .icon { color: var(--warning); }
  .source-list > li[data-off] > .source-name {
    color: var(--text-muted);
    text-decoration: line-through;
  }

  .studio-meters {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: var(--space-2xs) var(--space-xs);
    font-size: var(--step--1);
  }

  .meter-label { color: var(--text-muted); }

  .studio-panel .details { row-gap: 0; }

  .studio-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .studio-actions .button.large {
    min-block-size: 3rem;
    padding-inline: 0.8em;
    font-size: var(--step-0);
    white-space: nowrap;
  }

  .studio-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
  }

  .studio-more {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2xs) var(--space-xs);
    font-size: var(--step--1);
  }

  /* Files view */
  .file-list {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .file-list > li {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs) var(--space-s);
    padding-block: var(--space-s);
    border-block-end: 1px solid var(--border);
  }

  .file-list > li:last-child { border-block-end: none; }

  .file-list > li > .icon { block-size: 1.4em; color: var(--text-muted); }

  .file-name {
    flex: 1 1 16rem;
    display: flex;
    flex-direction: column;
  }

  .file-name > code,
  .file-name code { overflow-wrap: anywhere; }

  .recording-title {
    flex: 1 1 16rem;
    margin: 0;
  }

  .recording-title time { text-decoration: underline dotted; text-underline-offset: 0.2em; cursor: help; }

  .file-name > span {
    color: var(--text-muted);
    font-size: var(--step--1);
  }

  .file-list .chip { margin-inline-start: auto; }
}

@layer views {
  /* Upload card */
  .upload-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-s);
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .upload-list > li {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-2xs) var(--space-s);
    align-items: center;
    font-size: var(--step--1);
  }

  .upload-list code { overflow-wrap: anywhere; }

  .upload-list .progress { grid-column: 1 / -1; }

  .upload-list:empty,
  #extra-errors:empty { display: none; }

  .upload-list .row-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
  }

  .deliver-extra {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .deliver h3 { font-size: var(--step-0); }

  .drop-zone {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-m);
    border: 2px dashed var(--border);
    border-radius: var(--radius-m);
    background: var(--surface-sunken);
    color: var(--text-muted);
    text-align: center;
    cursor: pointer;
  }

  .drop-zone > .icon { block-size: 1.5em; }
  .drop-zone strong { color: var(--primary); }

  .drop-zone > input {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    opacity: 0;
  }

  .drop-zone:has(input:focus-visible) {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }

  .drop-zone[data-over] {
    border-color: var(--primary);
    background: var(--primary-subtle);
  }

  @media (hover: hover) and (pointer: fine) {
    .drop-zone:hover { border-color: var(--primary); }
  }

  .notes {
    field-sizing: content;
    min-block-size: 4lh;
    max-block-size: 16lh;
    resize: none;
    font: inherit;
  }

  .upload-list [data-state="error"] { color: var(--danger); }
  .upload-list [data-state="done"] { color: var(--success); }
}

@layer views {
  /* Floating controls window */
  .pip {
    display: flex;
    flex-direction: column;
    align-items: start;
    gap: var(--space-xs);
    padding: var(--space-s);
  }

  .pip > .meter { inline-size: 100%; }

  .pip-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xs);
    inline-size: 100%;
  }
}