/* Palette mirrors the console renderer's PrettyConsole tokens. */
:root {
    --bg: #0d1117;
    --bg-panel: #11141b;
    --bg-row: #2a2d36;
    /* DarkGrayBackground */
    --bg-progress-name: #1f3a5f;
    /* DarkBlueBackground */
    --fg: #c9d1d9;
    --fg-dim: #6e7681;
    /* DarkGray */
    --fg-strong: #ffffff;
    /* White */
    --c-cyan: #56b6c2;
    --c-yellow: #e5c07b;
    --c-green: #98c379;
    --c-magenta: #c678dd;
    --c-red: #e06c75;
    --c-blue: #61afef;
    --border: #21262d;
    --mono: "Roboto Mono", ui-monospace, "Cascadia Mono", Consolas, "Lucida Console", "Courier New", "DejaVu Sans Mono", monospace;
    /* Pattern row height — single source of truth. view-patterns.js reads --row-h
       from computed styles, so changing this value here is enough. */
    --row-h: 26px;
    --rows-per-pattern: 64;
    --pat-block-h: calc(var(--row-h) * var(--rows-per-pattern));
    --pat-col-h: calc(var(--pat-block-h) * 3);
    --channel-gap: 2ch;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.35;
    display: flex;
    flex-direction: column;
}

/* ─── Top bar ─────────────────────────────────────────────────────────── */
.topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1em;
    padding: 0.75em 1em;
    border-bottom: 1px solid var(--border);
    background: var(--bg-panel);
}

.brand h1 {
    font-family: var(--mono);
    font-size: 1.15em;
    margin: 0;
    color: var(--c-magenta);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.brand h1 .sub {
    color: var(--fg-dim);
    font-weight: 400;
}

.brand .tagline {
    margin: 0.15em 0 0;
    color: var(--fg-dim);
    font-size: 0.85em;
}

.brand a {
    color: var(--fg-dim);
    transition: color 250ms;
}

.brand a:hover {
    color: var(--c-magenta);
}

.transport {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75em;
}

.transport label {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    color: var(--fg-dim);
}

.transport label .lbl {
    color: var(--c-cyan);
}

.transport input[type="file"] {
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.25em;
    font-family: inherit;
}

.transport select,
.transport input[type="checkbox"] {
    accent-color: var(--c-green);
}

.transport select {
    background: var(--bg);
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 0.2em 0.35em;
    font-family: inherit;
}

button {
    background: var(--bg);
    color: var(--c-green);
    border: 1px solid var(--border);
    padding: 0.3em 0.8em;
    font-family: inherit;
    font-size: 1em;
    cursor: pointer;
}

button:hover:not(:disabled) {
    border-color: var(--c-green);
}

button:disabled {
    color: var(--fg-dim);
    cursor: not-allowed;
}

#playPause {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.3rem 1rem;
    min-width: 12ch;
}

/* ─── Tabs ────────────────────────────────────────────────────────────── */
.tabs {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0 1em;
    border-bottom: 1px solid var(--border);
    background: var(--bg-panel);
}

.tab {
    background: transparent;
    color: var(--fg-dim);
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.55em 1em;
    font-family: inherit;
    font-size: 1em;
    cursor: pointer;
}

.tab:hover {
    color: var(--fg);
}

.tab.active {
    color: var(--c-yellow);
    border-bottom-color: var(--c-yellow);
}

.tabs .status {
    margin-left: auto;
    color: var(--fg-dim);
    font-size: 0.9em;
    padding: 0 0.5em;
}

/* ─── Info bar ────────────────────────────────────────────────────────── */
.infobar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0 0.75em;
    padding: 0.4em 1em;
    border-bottom: 1px solid var(--border);
    background: var(--bg-panel);
}

.infobar .title {
    color: var(--c-magenta);
    min-width: 18ch;
}

.infobar .sep {
    color: var(--fg-dim);
}

.infobar .kv {
    display: inline-flex;
    gap: 0.35em;
}

.infobar .label {
    color: var(--c-cyan);
}

.infobar .val {
    color: var(--fg-strong);
}

/* ─── Views ──────────────────────────────────────────────────────────── */
.view {
    flex: 1;
    padding: 0.5em 1em 0;
    overflow: hidden;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.view.hidden {
    display: none;
}


/* ─── Patterns view ───────────────────────────────────────────────────── */
/* Horizontal scrolling is hoisted to the view container so the channel
   header strip and the pattern columns share a single scrollbar (and stay
   horizontally aligned by construction). */
#view-patterns {
    overflow-x: auto;
    overflow-y: hidden;
}

.channels-row {
    display: flex;
    gap: var(--channel-gap);
    padding: 0.3em 0 0.4em;
    width: max-content;
    min-width: 100%;
    border-bottom: 1px solid var(--border);
}

.channel {
    flex: 0 0 auto;
    width: 14ch;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    cursor: pointer;
    user-select: none;
}

.channel .ch-name {
    color: var(--c-blue);
    text-align: center;
}

.channel.muted .ch-name {
    color: var(--c-red);
}

.channel canvas {
    display: block;
    width: 14ch;
    height: 10px;
}

.patterns-scroll {
    flex: 1;
    overflow: hidden;
    position: relative;
    min-height: 0;
    width: max-content;
    min-width: 100%;
}

/* Persistent play-line band: a horizontal stripe at the vertical center of
   the scroll viewport so the cursor location is always visible, independent
   of which row currently holds the .active highlight. */
.patterns-scroll::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: var(--row-h);
    transform: translateY(-50%);
    background: rgba(97, 175, 239, 0.14);
    box-shadow: inset 0 1px 0 rgba(97, 175, 239, 0.65),
        inset 0 -1px 0 rgba(97, 175, 239, 0.65);
    pointer-events: none;
    z-index: 0;
}

.patterns {
    display: flex;
    gap: var(--channel-gap);
    height: 100%;
    align-items: flex-start;
    overflow-y: hidden;
    position: relative;
    z-index: 1;
}

.pat-col {
    flex: 0 0 auto;
    width: 14ch;
    position: relative;
    height: var(--pat-col-h);
    /* 3 blocks × 64 rows × --row-h */
    color: var(--fg-dim);
    white-space: pre;
    will-change: transform;
}

/* Three pattern blocks (prev/cur/next) stacked via absolute top offsets so the
   rotation fast path can re-label them with a single style write rather than
   re-painting their contents. */
.pat-block {
    position: absolute;
    left: 0;
    right: 0;
    height: var(--pat-block-h);
    /* 64 rows × --row-h */
}

.pat-block.dim {
    opacity: 0.55;
}

.pat-row {
    padding: 2px 0;
    line-height: var(--row-h);
    height: var(--row-h);
}

.pat-row.active {
    color: var(--fg-strong);
}

.pat-row .nt {
    color: var(--fg-strong);
}

.pat-row .in {
    color: var(--c-green);
}

.pat-row .vo {
    color: var(--c-cyan);
}

.pat-row .fx {
    color: var(--c-yellow);
}

.pat-block.dim .nt,
.pat-block.dim .in,
.pat-block.dim .vo,
.pat-block.dim .fx {
    color: var(--fg-dim);
}

.pat-row .ph {
    color: var(--fg-dim);
}

/* ─── Samples view ────────────────────────────────────────────────────── */
.samples-summary {
    display: flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.25em 0.5em;
    color: var(--c-cyan);
}

.samples-summary .lbl {
    color: var(--c-cyan);
}

.samples-summary .val {
    color: var(--fg-strong);
    margin-right: 1em;
}

.samples-summary .filename {
    margin-left: auto;
    color: var(--c-magenta);
}

.samples-header,
.samples-row {
    display: grid;
    grid-template-columns: 3ch 28ch 7ch 5ch 5ch 10ch 8ch 1fr;
    column-gap: 8px;
    align-items: center;
    padding: 0 0.5em;
}

.samples-header {
    color: var(--c-yellow);
    border-bottom: 1px solid var(--border);
    padding-bottom: 2px;
    margin-bottom: 2px;
}

.samples-list {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.samples-row {
    padding-top: 1px;
    padding-bottom: 1px;
}

.samples-row .col-i {
    color: var(--c-cyan);
    text-align: right;
}

.samples-row .col-n {
    color: var(--fg-strong);
    white-space: pre;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    font-family: var(--mono);
    font-variant-ligatures: none;
}

.samples-row.empty .col-n,
.samples-row.empty .col-i,
.samples-row.empty .col-l,
.samples-row.empty .col-v,
.samples-row.empty .col-f,
.samples-row.empty .col-ls,
.samples-row.empty .col-le {
    color: var(--fg-dim);
}

.samples-row .col-l {
    color: var(--c-cyan);
    text-align: right;
}

.samples-row .col-v {
    color: var(--c-green);
    text-align: right;
}

.samples-row .col-f {
    color: var(--c-blue);
    text-align: right;
}

.samples-row .col-ls {
    color: var(--c-magenta);
    text-align: right;
}

.samples-row .col-le {
    color: var(--c-magenta);
    text-align: right;
}

.samples-row .col-w {
    position: relative;
    height: 22px;
}

.samples-row canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.samples-row .col-n .progress-overlay {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    background: var(--bg-progress-name);
    z-index: -1;
}

.samples-row .col-n {
    z-index: 0;
    isolation: isolate;
}

/* ─── Bottom bar / progress ──────────────────────────────────────────── */
.bottombar {
    padding: 0.5em 1em;
    border-top: 1px solid var(--border);
    background: var(--bg-panel);
}

#pos {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--bg-row);
    outline: none;
    margin: 0 0 0.5em;
}

#pos::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 4px;
    height: 14px;
    background: var(--c-green);
    border: 0;
    border-radius: 0;
}

#pos::-moz-range-thumb {
    width: 4px;
    height: 14px;
    background: var(--c-green);
    border: 0;
    border-radius: 0;
}

.shortcuts {
    color: var(--fg-dim);
    font-size: 0.85em;
}

.shortcuts kbd {
    font-family: inherit;
    background: var(--bg);
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    padding: 0 0.35em;
    color: var(--c-green);
}