/* Soundtrack Mixer - experimental version of the Music Box (scripts/pd_music_mixer.js).
   Rules are scoped under #ost-section where they need to beat the original id-based Music Box styles. */

.mixer {
    --mixer-panel: rgb(16, 16, 16);
    --mixer-well: rgb(8, 8, 8);
    --mixer-edge: rgba(255, 255, 255, 0.1);
    --mixer-dim: rgba(255, 255, 255, 0.55);
    --mixer-solo: 255, 200, 64;
    --mixer-lock: 150, 170, 255;
    --mixer-body-height: 160px;

    display: flex;
    flex-direction: column;
    gap: 10px;
    font-family: "Lato";
    color: var(--white);
}

.mixer-deck,
.mixer-strip,
.mixer-option {
    border-top: 1px solid var(--mixer-edge);
    border-bottom: 1px solid var(--mixer-edge);
}

/* Deck: the display at the top */
.mixer-deck {
    background:
        radial-gradient(ellipse at 50% 0%, rgba(var(--custom-color), 0.14), transparent 70%),
        url(../images/patterns/grid1110_25.png),
        var(--mixer-well);
    border-radius: 8px;
    padding: 12px 14px 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.mixer-deck-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.mixer-deck-info {
    min-width: 0;
}

.mixer-status {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mixer-dim);
}

.mixer-status::before {
    content: "";
    width: 6px;
    height: 6px;
    margin-right: 6px;
    border-radius: 50%;
    background-color: currentColor;
    display: inline-block;
    vertical-align: 1px;
}

.mixer-status[data-state="playing"] {
    color: rgb(var(--custom-color));
}

.mixer-status[data-state="playing"]::before {
    box-shadow: 0 0 6px rgb(var(--custom-color));
}

.mixer-status[data-state="busy"] {
    color: rgb(var(--mixer-solo));
}

.mixer-status[data-state="busy"]::before {
    animation: mixer-blink 0.8s ease-in-out infinite alternate;
}

/* The title is also the main soundtrack picker: the real <select> is stretched invisibly over it,
   so clicking anywhere on the title opens the browser's own list. */
.mixer-title-picker {
    max-width: calc(100% + 12px); /* make up for the negative margins, or the title is cut 12px short */
    margin: 0 -6px;
    padding: 0 6px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    transition: background-color 0.15s;
}

.mixer-title-picker:hover {
    background-color: rgba(255, 255, 255, 0.07);
}

.mixer-title-picker:has(select:focus-visible) {
    outline: 2px solid rgb(var(--custom-color));
}

#ost-section .mixer-title-picker select {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    opacity: 0;
    font-size: 16px; /* 16px+ stops iOS zooming in when the list opens */
    cursor: pointer;
    /* Invisible here, but the list the browser opens takes these, so it stays dark like the other selectors. */
    background-color: rgb(16, 16, 16);
    color: var(--white);
    font-family: "Lato";
    color-scheme: dark;
}

.mixer-title {
    min-width: 0;
    font-size: 24px;
    font-weight: 900;
    line-height: 1.2;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mixer-title.is-empty {
    color: rgb(var(--custom-color));
}

.mixer-title-chevron {
    width: 14px;
    height: 9px;
    flex-shrink: 0;
    fill: none;
    stroke: rgb(var(--custom-color));
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.mixer-next {
    margin-top: 4px;
    font-size: 12px;
    font-weight: 700;
    color: rgb(var(--mixer-solo));
}

.mixer-next[hidden] {
    display: none;
}

.mixer-subtitle {
    font-size: 12px;
    color: var(--mixer-dim);
}

.mixer-deck-tempo {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    flex-shrink: 0;
}

#ost-section #current-bpm {
    background: none;
    border: none;
    padding: 0;
    font-size: 12px;
    font-weight: 700;
    color: var(--mixer-dim);
    white-space: nowrap;
}

.mixer-bpm-value {
    font-size: 34px;
    font-weight: 900;
    line-height: 1;
    color: rgb(var(--custom-color));
    text-shadow: 0 0 12px rgba(var(--custom-color), 0.5);
    font-variant-numeric: tabular-nums;
}

.mixer-beat {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mixer-beat-leds {
    display: flex;
    gap: 4px;
}

.mixer-led {
    --pulse: 1;

    width: 12px;
    height: 12px;
    border-radius: 3px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.mixer-led:first-child {
    border-color: rgba(var(--custom-color), 0.35);
}

.mixer-led.is-on {
    background-color: rgba(var(--custom-color), calc(0.35 + var(--pulse) * 0.65));
    box-shadow: 0 0 calc(var(--pulse) * 10px) rgb(var(--custom-color));
}

.mixer-position {
    min-width: 3.5em;
    font-size: 14px;
    font-weight: 700;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.mixer-spectrum {
    width: 100%;
    height: 96px;
    display: block;
}

.mixer-loop {
    height: 3px;
    border-radius: 2px;
    background-color: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

#mixer-loop-bar {
    width: 0%;
    height: 100%;
    background-color: rgb(var(--custom-color));
    box-shadow: 0 0 6px rgb(var(--custom-color));
}

/* Channel strips */
.mixer-strips {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
}

.mixer-strip {
    background-color: var(--mixer-panel);
    border-radius: 8px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: relative;
    transition: opacity 0.3s;
}

.mixer-strip::before {
    content: "";
    height: 2px;
    border-radius: 2px;
    position: absolute;
    left: 8px;
    right: 8px;
    top: -1px;
    background-color: rgb(var(--custom-color));
    box-shadow: 0 0 8px rgb(var(--custom-color));
    transition: opacity 0.3s;
}

.mixer-strip.is-silent::before {
    opacity: 0.15;
}

.mixer-strip.is-soloed-out {
    opacity: 0.45;
}

.mixer-strip-master {
    background:
        linear-gradient(180deg, rgba(var(--custom-color), 0.08), transparent 60%),
        var(--mixer-panel);
}

.mixer-strip-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4px;
}

.mixer-strip.is-menu-open {
    z-index: 5; /* so the role menu sits above the neighbouring strips */
}

.mixer-strip-head {
    position: relative;
}

.mixer-strip-name {
    font-size: 14px;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* The channel name doubles as the button that opens its role menu. */
.mixer-strip-role {
    min-width: 0;
    margin: -2px -4px;
    padding: 2px 4px;
    border: none;
    border-radius: 4px;
    background: none;
    color: inherit;
    font-family: "Lato";
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.mixer-strip-role:hover,
.mixer-strip-role[aria-expanded="true"] {
    background-color: rgba(255, 255, 255, 0.08);
}

.mixer-strip-role:focus-visible {
    outline: 2px solid rgb(var(--custom-color));
}

.mixer-strip-chevron {
    width: 10px;
    height: 6px;
    flex-shrink: 0;
    fill: none;
    stroke: rgb(var(--custom-color));
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.15s;
}

.mixer-strip-role[aria-expanded="true"] .mixer-strip-chevron {
    transform: rotate(180deg);
}

.mixer-role-menu {
    position: absolute;
    left: -4px;
    right: -4px;
    top: calc(100% + 6px);
    z-index: 10; /* above the strip's own positioned meters and toggles */
    padding: 4px;
    border-radius: 6px;
    border: 1px solid var(--mixer-edge);
    background-color: rgb(22, 22, 22);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mixer-role-menu[hidden] {
    display: none;
}

.mixer-role-option {
    padding: 6px 8px 6px 22px;
    border: none;
    border-radius: 4px;
    background: none;
    color: var(--white);
    font-family: "Lato";
    text-align: left;
    position: relative;
    cursor: pointer;
}

.mixer-role-option:hover,
.mixer-role-option:focus-visible {
    background-color: rgba(var(--custom-color), 0.12);
    outline: none;
}

.mixer-role-option[aria-checked="true"]::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    position: absolute;
    left: 8px;
    top: 11px;
    background-color: rgb(var(--custom-color));
    box-shadow: 0 0 6px rgb(var(--custom-color));
}

.mixer-role-option b {
    display: block;
    font-size: 13px;
    font-weight: 900;
}

.mixer-role-option small {
    display: block;
    font-size: 11px;
    line-height: 1.3;
    color: var(--mixer-dim);
}

.mixer-strip-badge {
    font-size: 10px;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 3px;
    white-space: nowrap;
    border: 1px solid currentColor;
    color: var(--mixer-dim);
}

.mixer-strip-badge:empty {
    display: none;
}

.mixer-strip-badge[data-match="exact"] {
    color: rgb(128, 255, 128);
}

.mixer-strip-badge[data-match="octave"] {
    color: rgb(255, 255, 128);
}

.mixer-strip-badge[data-match="off"] {
    color: rgb(255, 128, 128);
}

.mixer-strip-layers {
    font-size: 11px;
    color: var(--mixer-dim);
    margin-top: -4px;
}

#ost-section .mixer-strip-select {
    font-size: 13px;
    margin-top: 0;
    height: 30px;
}

.mixer-strip-body {
    height: var(--mixer-body-height);
    padding: 6px 0;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    gap: 4px;
    /* dB scale ticks behind the meters */
    background:
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 12.5%),
        var(--mixer-well);
    background-origin: content-box;
}

.mixer-meter {
    width: 10px;
    height: 100%;
    border-radius: 2px;
    background-color: rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.mixer-meter-fill {
    position: absolute;
    inset: 0;
    clip-path: inset(100% 0 0 0);
    background-image:
        url(../images/patterns/hazard_dark.png),
        linear-gradient(0deg,
            rgb(var(--custom-color)) 0%,
            rgb(var(--custom-color)) 70%,
            rgb(255, 220, 64) 85%,
            rgb(255, 80, 80) 100%);
    background-size: 6px, 100% 100%;
}

.mixer-meter-peak {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    margin-bottom: -2px;
    background-color: var(--white);
    opacity: 0;
}

/* Vertical faders: a horizontal range input rotated into a fixed-size slot, which styles the same
   in every browser (unlike writing-mode ranges). */
.mixer-fader-slot {
    width: 26px;
    height: 100%;
    margin-left: 6px;
    position: relative;
}

#ost-section .mixer-fader {
    width: calc(var(--mixer-body-height) - 12px);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) rotate(-90deg);
}

#ost-section .mixer-fader,
#ost-section .mixer-filter-knob {
    --fill: 100%;

    -webkit-appearance: none;
    appearance: none;
    height: 26px;
    margin: 0;
    background: transparent;
    cursor: pointer;
}

.mixer-fader::-webkit-slider-runnable-track,
.mixer-filter-knob::-webkit-slider-runnable-track {
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(90deg, rgba(var(--custom-color), 0.7) var(--fill), rgba(255, 255, 255, 0.12) var(--fill));
}

.mixer-fader::-moz-range-track,
.mixer-filter-knob::-moz-range-track {
    height: 4px;
    border-radius: 2px;
    background-color: rgba(255, 255, 255, 0.12);
}

.mixer-fader::-moz-range-progress {
    height: 4px;
    border-radius: 2px;
    background-color: rgba(var(--custom-color), 0.7);
}

.mixer-fader::-webkit-slider-thumb,
.mixer-filter-knob::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 24px;
    margin-top: -10px;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background:
        linear-gradient(90deg, transparent 6px, rgb(var(--custom-color)) 6px, rgb(var(--custom-color)) 8px, transparent 8px),
        linear-gradient(90deg, rgb(64, 64, 64), rgb(28, 28, 28));
    box-shadow: 0 2px 4px black;
}

.mixer-fader::-moz-range-thumb,
.mixer-filter-knob::-moz-range-thumb {
    width: 12px;
    height: 22px;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background:
        linear-gradient(90deg, transparent 5px, rgb(var(--custom-color)) 5px, rgb(var(--custom-color)) 7px, transparent 7px),
        linear-gradient(90deg, rgb(64, 64, 64), rgb(28, 28, 28));
    box-shadow: 0 2px 4px black;
}

.mixer-fader:focus-visible::-webkit-slider-thumb,
.mixer-filter-knob:focus-visible::-webkit-slider-thumb {
    outline: 2px solid rgb(var(--custom-color));
}

/* The filter is bipolar, so it shows a centre mark instead of a fill. */
.mixer-filter-knob::-webkit-slider-runnable-track {
    background:
        linear-gradient(90deg, transparent calc(50% - 1px), rgba(255, 255, 255, 0.5) calc(50% - 1px), rgba(255, 255, 255, 0.5) calc(50% + 1px), transparent calc(50% + 1px)),
        rgba(255, 255, 255, 0.12);
}

/* Shorter than the faders so knob and scale fit the 30px a channel's track selector takes. */
#ost-section .mixer-filter-knob {
    width: 100%;
    height: 18px;
    display: block;
}

.mixer-filter-knob::-webkit-slider-thumb {
    height: 16px;
    margin-top: -6px;
}

.mixer-filter-knob::-moz-range-thumb {
    height: 14px;
}

.mixer-filter {
    height: 30px;
}

.mixer-filter-scale {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    line-height: 12px;
    color: var(--mixer-dim);
}

#mixer-filter-value {
    color: var(--white);
    font-weight: 700;
}

.mixer-fader-value {
    font-size: 11px;
    text-align: center;
    color: var(--mixer-dim);
    font-variant-numeric: tabular-nums;
}

/* Fade automation bars, the original player's volume bars, slimmed down */
.mixer-fade {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 2px;
    border-radius: 3px;
    background-color: black;
}

#ost-section .mixer-fade > div {
    width: 0%;
    height: 3px;
    background-size: 4px;
    filter: drop-shadow(0 0 3px rgb(var(--custom-color)));
    transition: none;
}

.mixer-strip-buttons {
    display: flex;
    gap: 4px;
}

.mixer-toggle {
    flex: 1;
    padding: 5px 0;
    border-radius: 4px;
    border-top: 1px solid var(--mixer-edge);
    border-bottom: 1px solid var(--mixer-edge);
    background-color: rgb(28, 28, 28);
    color: var(--mixer-dim);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.04em;
    text-align: center;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
    position: relative;
    transition: background-color 0.15s, color 0.15s, box-shadow 0.15s;
}

.mixer-toggle input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.mixer-toggle:hover {
    color: var(--white);
}

.mixer-toggle:has(input:focus-visible) {
    outline: 2px solid rgb(var(--custom-color));
}

.mixer-toggle-on:has(input:checked) {
    background-color: rgba(var(--custom-color), 0.18);
    color: rgb(var(--custom-color));
    box-shadow: inset 0 0 0 1px rgba(var(--custom-color), 0.6), 0 0 10px rgba(var(--custom-color), 0.2);
}

.mixer-toggle-solo:has(input:checked) {
    background-color: rgba(var(--mixer-solo), 0.18);
    color: rgb(var(--mixer-solo));
    box-shadow: inset 0 0 0 1px rgba(var(--mixer-solo), 0.6), 0 0 10px rgba(var(--mixer-solo), 0.2);
}

.mixer-toggle-lock:has(input:checked) {
    background-color: rgba(var(--mixer-lock), 0.18);
    color: rgb(var(--mixer-lock));
    box-shadow: inset 0 0 0 1px rgba(var(--mixer-lock), 0.6), 0 0 10px rgba(var(--mixer-lock), 0.2);
}

/* A quantized toggle waiting for the next bar */
.mixer-strip.is-queued .mixer-toggle-on {
    animation: mixer-blink 0.25s steps(2, jump-none) infinite alternate;
}

/* Transport */
.mixer-transport {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.mixer-transport-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

#ost-section .mixer-button {
    margin: 0;
    padding: 7px 16px;
    border-radius: 4px;
    border: none;
    border-top: 1px solid var(--mixer-edge);
    border-bottom: 1px solid var(--mixer-edge);
    background-color: var(--mixer-panel);
    color: var(--white);
    font-family: "Lato";
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.15s, box-shadow 0.15s;
}

#ost-section .mixer-button:hover {
    background-color: rgb(32, 32, 32);
    box-shadow: inset 0 0 0 1px rgba(var(--custom-color), 0.5);
}

#ost-section .mixer-button:focus-visible {
    outline: 2px solid rgb(var(--custom-color));
}

#ost-section .mixer-button-primary {
    background-color: rgba(var(--custom-color), 0.2);
    color: rgb(var(--custom-color));
    box-shadow: inset 0 0 0 1px rgba(var(--custom-color), 0.6);
}

#ost-section #music-reset {
    color: rgb(255, 128, 128);
}

#ost-section #music-transition.is-pending {
    color: rgb(var(--mixer-solo));
    animation: mixer-pending 1.2s ease-in-out infinite;
}

/* Options */
.mixer-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
}

.mixer-option {
    padding: 8px 10px;
    border-radius: 6px;
    background-color: var(--mixer-panel);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
}

.mixer-option input {
    margin: 2px 0 0;
    accent-color: rgb(var(--custom-color));
    flex-shrink: 0;
}

.mixer-option b {
    display: block;
    font-size: 14px;
    font-weight: 700;
}

.mixer-option small {
    display: block;
    font-size: 12px;
    color: var(--mixer-dim);
}

.mixer-option-select {
    grid-column: 1 / -1;
    justify-content: space-between;
    align-items: center;
    cursor: default;
}

#ost-section .mixer-option-select select {
    width: auto;
    margin: 0;
    font-size: 14px;
}

@keyframes mixer-blink {
    from { opacity: 1; }
    to { opacity: 0.3; }
}

@keyframes mixer-pending {
    0%, 100% { box-shadow: inset 0 0 0 1px rgba(var(--mixer-solo), 0.3); }
    50% { box-shadow: inset 0 0 0 1px rgba(var(--mixer-solo), 0.9), 0 0 10px rgba(var(--mixer-solo), 0.35); }
}

@media (prefers-reduced-motion: reduce) {
    .mixer-status[data-state="busy"]::before,
    .mixer-strip.is-queued .mixer-toggle-on,
    #ost-section #music-transition.is-pending {
        animation: none;
    }
}

@media screen and (max-width: 760px) {
    .mixer-strips {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mixer-strip-master {
        grid-column: 1 / -1;
    }

    /* Narrow strips: keep the channel name readable by dropping the badge's unit. */
    .mixer-badge-unit {
        display: none;
    }

    .mixer-strip-name {
        letter-spacing: 0.02em;
    }

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

@media screen and (max-width: 480px) {
    .mixer-deck-top {
        flex-direction: column;
        align-items: stretch;
    }

    .mixer-deck-tempo {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}