h1 {
    padding: 0;
    font-weight: 700;
    font-size: 1.8rem;
    margin: 0;
}

h1.title {
    display: flex;
    align-items: center;
}

h1.title span {
    margin-right: 5px;
}

#webnn-logo {
    width: 150px;
    height: 30px;
    display: inline-block;
    margin: 0 6px 0 10px;
    object-fit: contain;
    /* The asset is drawn in white for dark backgrounds; darken it for this light header. */
    filter: brightness(0) opacity(0.65);
}

.v1:hover #webnn-logo {
    filter: brightness(0) saturate(100%) invert(43%) sepia(34%) saturate(976%) hue-rotate(179deg) brightness(88%)
        contrast(88%) opacity(0.9);
}

#back {
    width: 24px;
    height: 24px;
    border-radius: 48px;
    border: 1px solid var(--main-5);
    display: grid;
    align-items: center;
    justify-items: center;
}

#back a {
    display: flex;
}

#back svg {
    width: 20px;
    height: 20px;
}

#back svg path {
    fill: var(--main-5);
}

#back:hover {
    border: 1px solid var(--main);
    background: linear-gradient(135deg, var(--main) 0%, var(--main-dark) 40%, var(--main-darker) 100%);
    box-shadow: 0 3px 15px -1px var(--main-5);
    cursor: pointer;
}

#back:hover svg path {
    fill: var(--bg);
}

.grid-2-41 {
    display: grid;
    grid-template-columns: 4fr 1fr;
    grid-column-gap: 0.8rem;
    align-items: start;
    justify-items: center;
    margin: 1rem 0;
}

.grid-2-41 h1 {
    justify-self: left;
}

.grid-2-41.v1 {
    margin: 0;
    align-items: center;
}

.v1 {
    padding: 1rem 40px;
    border-bottom: 1px solid var(--border);
}

.v9 {
    padding: 0 40px;
}

[hidden] {
    display: none !important;
}

/* Main stage + sidebar, same split as whisper-base. */
.layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 20px;
    align-items: start;
    margin: 1rem 0;
}

.main {
    min-width: 0;
}

#sidebar {
    position: sticky;
    top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.settings {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 5px;
    background-color: var(--main-alpha-2);
}

.settings .field {
    display: grid;
    grid-template-columns: 64px 1fr;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.settings label {
    color: var(--font-weak);
}

.settings select {
    font-family: "Archivo", system-ui, sans-serif;
    font-size: 0.9rem;
    color: var(--font);
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 4px 6px;
    cursor: pointer;
}

.settings select:hover,
.settings select:focus {
    border: 1px solid var(--main);
    outline: none;
}

.settings select:disabled {
    cursor: not-allowed;
    color: var(--font-weak);
}

.settings .key button {
    width: 100%;
    min-width: 0;
}

.settings .key button.attention {
    box-shadow:
        0 0 0 3px var(--main-1),
        0 3px 15px -1px var(--main-5);
    animation: attention-pulse 1.6s ease-in-out infinite;
}

@keyframes attention-pulse {
    50% {
        box-shadow:
            0 0 0 5px var(--main-1),
            0 3px 15px -1px var(--main-5);
    }
}

.stage {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 5px;
    background-color: var(--main-alpha-2);
    padding: 10px 12px 12px;
    min-height: 40vh;
}

/* Model-load overlay, adapted from the sdxl-turbo .frame.loadwave effect. */
.stage-loadwave {
    --loadwave-value: 0;
    --loadwave-layer-size: 1600px;
    position: absolute;
    inset: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--bg);
}

.stage-loadwave.over-tracks {
    background-color: rgba(255, 255, 255, 0.85);
}

.main.busy #controls {
    pointer-events: none;
    opacity: 0.5;
}

.stage-loadwave .loadwave-layer {
    position: absolute;
    left: 50%;
    top: calc(100% - var(--loadwave-value) * 1%);
    width: var(--loadwave-layer-size);
    height: var(--loadwave-layer-size);
    margin-left: calc(var(--loadwave-layer-size) / -2);
    border-radius: calc(var(--loadwave-layer-size) / 2.5);
    background: var(--main-1);
    transition: top 0.4s ease-out;
    animation: loadwave-rotate 8s linear infinite both;
}

.stage-loadwave .loadwave-layer:nth-child(2) {
    background: var(--main-05);
    animation-duration: 11s;
    animation-direction: reverse;
}

.stage-loadwave .loadwave-data {
    position: relative;
    text-align: center;
    color: var(--font);
}

.stage-loadwave .loadwave-data strong {
    font-size: 3.2rem;
    font-weight: 700;
}

.stage-loadwave .loadwave-data span {
    font-size: 1.6rem;
    margin-left: 2px;
}

.loadwave-label {
    margin-top: 4px;
    font-size: 0.9rem;
    color: var(--font-weak);
}

@keyframes loadwave-rotate {
    to {
        transform: rotate(360deg);
    }
}

.stage-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.stage-title {
    font-weight: 600;
}

.track-file {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--font-weak);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.stage-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 34vh;
    color: var(--font-weak);
}

.info-tip {
    position: relative;
    color: var(--main-5);
    cursor: help;
    outline: none;
}

.info-tip:hover,
.info-tip:focus {
    color: var(--main);
}

.info-tip .tip {
    display: none;
    position: absolute;
    top: 150%;
    left: -8px;
    z-index: 10;
    width: 420px;
    padding: 10px 12px;
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--font);
    background: var(--bg);
    border: 1px solid var(--main-5);
    border-radius: 5px;
    box-shadow: 0 3px 15px -1px var(--main-1);
}

.info-tip:hover .tip,
.info-tip:focus .tip {
    display: block;
}

/* One lane per track; every waveform spans the same column so playheads align. */
.track {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr) 56px;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    border-top: 1px solid var(--border);
}

.track.mix {
    border-top: 0;
}

.track-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.track-name {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

.track.mix .track-name {
    color: var(--grey);
}

.track-waveform {
    display: block;
    width: 100%;
    height: 64px;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
}

.track-tail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.track-placeholder {
    padding: 24px 0;
    text-align: center;
    font-size: 0.9rem;
    color: var(--font-weak);
    border-top: 1px dashed var(--border);
}

button {
    border-radius: 50px;
    font-size: 1rem;
    padding: 8px 24px;
    cursor: pointer;
    border: 1px solid var(--main);
    background: linear-gradient(135deg, var(--main) 0%, var(--main-dark) 40%, var(--main-darker) 100%);
    color: var(--bg);
    font-family: "Archivo", system-ui, sans-serif;
    text-shadow: var(--main-darker) 1px 2px 1px;
}

.key button {
    min-width: 190px;
}

button:hover {
    border: 1px solid var(--main-dark);
    background: linear-gradient(135deg, var(--main-dark) 0%, var(--main-darker) 40%, var(--main-darker) 100%);
    box-shadow: 0 3px 15px -1px var(--main-5);
}

/* Round icon buttons, same as the whisper-base controls. */
.icon-btn,
.key .icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 49px;
    height: 49px;
    min-width: 0;
    padding: 0;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    text-shadow: none;
    cursor: pointer;
}

.icon-btn.small {
    width: 30px;
    height: 30px;
}

.icon-btn svg {
    width: 24px;
    height: 24px;
}

.icon-btn.small svg {
    width: 18px;
    height: 18px;
}

.icon-btn svg path {
    fill: var(--font);
}

.icon-btn:hover {
    background: var(--main-01);
    border: 1px solid var(--main);
    box-shadow: none;
}

.icon-btn:hover svg path {
    fill: var(--main);
}

.icon-btn:disabled,
.icon-btn:disabled:hover,
#audio-file:disabled + .icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    cursor: not-allowed;
}

.icon-btn:disabled svg path,
#audio-file:disabled + .icon-btn svg path {
    fill: var(--border);
}

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

.icon-btn.playing .icon-pause {
    display: inline;
}

button:disabled,
button:disabled:hover {
    cursor: not-allowed;
    color: var(--border);
    background: var(--disabled);
    border: 1px solid var(--border);
    text-shadow: none;
    box-shadow: none;
}

#status {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 2px;
    font-size: 0.8rem;
    color: var(--font-weak);
    margin: 0;
}

#infer-progress-container .progress-bar {
    height: 4px;
    margin-top: 6px;
    border: 0;
}

#infer-progress-container .progress-label {
    display: none;
}

.indicator {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    min-height: 1.4rem;
    margin-top: 4px;
    font-size: 0.8rem;
    color: var(--font-weak);
}

.result-ok {
    color: var(--font);
    font-weight: 600;
}

.result-sub {
    margin-left: 8px;
}

#controls {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 1rem;
}

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

.stat-row {
    display: flex;
    justify-content: center;
    min-height: 1.6rem;
    margin-top: 8px;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: 600;
    margin: 2px;
}

.badge-success {
    background: var(--green-2);
    color: var(--font);
}

.badge-warning {
    background: var(--main-alpha-4);
    color: var(--font);
    border: 1px solid var(--border);
}

.badge-error {
    background: var(--pink);
    color: var(--bg);
}

.badge-info {
    background: var(--main-1);
    color: var(--main-darker);
}

.log-output {
    height: 46vh;
    min-height: 200px;
    padding: 10px;
    background-color: var(--main-alpha-2);
    border: 1px solid var(--border);
    font-size: 0.8rem;
    font-family: "Consolas", "Monaco", monospace;
    border-radius: 5px;
    display: flex;
    flex-direction: column-reverse;
    overflow-y: scroll;
    white-space: pre-wrap;
    word-break: break-word;
}

.log-output:hover {
    border: 1px solid var(--main);
    background-color: var(--bg-btn);
}

.footerinfo {
    font-size: 0.8rem;
}

#webnnstatus {
    text-align: right;
    font-size: 0.8rem;
    margin-top: 0;
}

#webnnstatus a {
    color: var(--main);
    text-decoration: none;
}

#webnnstatus a:hover {
    color: var(--green);
    text-decoration: underline;
}

#webnnstatus #circle {
    width: 8px;
    height: 8px;
    border-radius: 10px;
    display: inline-block;
    margin-bottom: 1px;
}

#webnnstatus.green {
    color: var(--font);
}

#webnnstatus.red {
    background-color: var(--pink);
    color: var(--bg);
    border-radius: 5px;
    margin-bottom: 5px;
    padding: 4px 12px;
}

#webnnstatus.red a {
    color: var(--bg);
}

#webnnstatus.green #circle {
    background-color: var(--green);
}

#webnnstatus.red #circle {
    background-color: var(--bg);
}

#versions {
    font-size: 0.8rem;
    display: block;
    text-align: right;
}

#versions a {
    color: var(--font);
    text-decoration: underline var(--border);
}

#versions a:hover {
    color: var(--green);
    text-decoration: underline;
}

.result-note {
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--font-weak);
}

.tensor-table {
    width: 100%;
    text-align: center;
    border-spacing: 0;
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    border-left: 1px solid var(--border);
    border-radius: 5px;
}

.tensor-table th,
.tensor-table td {
    padding: 3px 8px;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
}

.tensor-table th {
    font-weight: 600;
}

.tensor-table tr:nth-child(even) {
    background-color: var(--main-alpha-2);
}

.tensor-table tr td:hover {
    background-color: var(--main-dark);
    color: var(--bg);
}
.audio-details {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
}

.audio-details .tensor-table {
    text-align: left;
    margin-top: 8px;
    font-size: 0.8rem;
}

.progress-bar {
    position: relative;
    width: 100%;
    height: 16px;
    background: var(--main-alpha-4);
    border: 1px solid var(--border);
    border-radius: 50px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--main) 0%, var(--main-dark) 40%, var(--main-darker) 100%);
    width: 0%;
    transition: width 0.2s;
}
/* The label overlays the whole track instead of living inside the fill:
   while the fill is narrower than its own text the label would wrap and
   spill out of it, which is what made the first few steps look broken. */
.progress-label {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    font-size: 0.75rem;
    font-weight: 600;
    /* The label straddles fill and track at mid-progress, so it needs a
       halo to stay legible over both the blue gradient and grey. */
    color: var(--font);
    text-shadow:
        0 0 3px var(--bg),
        0 0 1px var(--bg);
}

#mixer-clock {
    font-family: "Consolas", "Monaco", monospace;
    font-size: 0.9rem;
    color: var(--font);
    min-width: 92px;
}

/* Live separation-frontier readout. Same amber as the frontier line
   on the waveforms, so the number and the marker read as one thing. */
.mixer-stat {
    font-family: "Consolas", "Monaco", monospace;
    font-size: 0.8rem;
    color: #8a5a00;
    background: #fff8e8;
    border: 1px solid #f3dca8;
    border-radius: 3px;
    padding: 2px 6px;
}

.stem-size {
    font-size: 0.7rem;
    color: var(--font-weak);
    font-family: "Consolas", "Monaco", monospace;
}

.stem-toggles {
    display: flex;
    gap: 4px;
}

.stem-toggle {
    width: 26px;
    height: 22px;
    min-width: 0;
    padding: 0;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: var(--bg);
    color: var(--grey);
    border: 1px solid var(--border);
    text-shadow: none;
}

.stem-toggle:hover {
    background: var(--main-05);
    color: var(--main-dark);
    border: 1px solid var(--main-5);
    box-shadow: none;
}

.stem-toggle.active,
.stem-toggle.active:hover {
    background: linear-gradient(135deg, var(--main) 0%, var(--main-dark) 40%, var(--main-darker) 100%);
    color: var(--bg);
    border: 1px solid var(--main);
}

.stem-toggle.solo.active,
.stem-toggle.solo.active:hover {
    background: linear-gradient(to right bottom, var(--pink-6), var(--pink-8), var(--pink));
    border: 1px solid var(--pink);
}

/* Large devices such as laptops (1024px) */
@media only screen and (max-width: 64em) {
    .layout {
        grid-template-columns: minmax(0, 1fr) 260px;
    }

    .info-tip .tip {
        width: 320px;
    }
}

@media only screen and (max-width: 718px) {
    .v1,
    .v9 {
        padding-left: 16px;
        padding-right: 16px;
    }

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

    #sidebar {
        position: static;
    }

    .log-output {
        height: 30vh;
    }

    .track {
        grid-template-columns: 84px minmax(0, 1fr) 36px;
        gap: 6px;
    }

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

    .stem-size {
        display: none;
    }

    .info-tip .tip {
        width: 80vw;
    }

    #webnn-logo {
        display: none;
    }
}