.teach-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 20px;
    margin-top: 20px;
}

.teach-picker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
    gap: 16px;
    margin-top: 18px;
}

.teach-track-picker,
.teach-difficulty-picker {
    min-width: 0;
    margin: 0;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.teach-track-picker legend,
.teach-difficulty-picker legend {
    padding: 0 4px;
    font-size: 12px;
    color: var(--text-soft);
}

#teach-track-count,
#teach-difficulty-status {
    margin-left: 8px;
    font-size: 11px;
}

.teach-track-picker:disabled,
.teach-difficulty-picker:disabled {
    opacity: 0.65;
}

.teach-tracks {
    max-height: 200px;
    overflow: auto;
}

.teach-tracks p {
    margin: 4px;
    font-size: 12px;
}

.teach-tracks .teach-track-option,
.teach-difficulties .teach-difficulty-option {
    display: grid;
    grid-template-columns: 16px minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 6px 4px;
}

.teach-track-option input,
.teach-difficulty-option input {
    width: 16px;
    min-height: 16px;
    padding: 0;
    accent-color: var(--primary);
}

.teach-track-option span {
    overflow-wrap: anywhere;
}

.teach-track-option span:last-child {
    font-size: 11px;
    white-space: nowrap;
}

/* Rows share one grid so every name column is as wide as the longest preset name.
   The first track stays intrinsic so it absorbs each row's padding instead of squeezing the radio. */
.teach-difficulties {
    display: grid;
    grid-template-columns: auto max-content minmax(0, 1fr);
}

.teach-difficulties .teach-difficulty-option {
    grid-column: 1 / -1;
    grid-template-columns: subgrid;
    align-items: baseline;
    padding: 9px 6px;
    cursor: pointer;
    border-radius: 5px;
}

.teach-difficulty-option input {
    align-self: center;
}

.teach-difficulty-option span:last-child {
    font: 11px var(--mono);
    line-height: 1.6;
}

.teach-difficulty-option:has(input:checked) {
    background: var(--primary-soft);
    box-shadow: inset 0 0 0 1px var(--primary);
}

.teach-difficulty-picker:disabled .teach-difficulty-option {
    cursor: default;
}

/* Same caption + 40px field shape as the neighbouring labels, holding the switch and its volume. */
.teach-metronome {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 12px;
    color: var(--text-soft);
}

.teach-metronome-box {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 200px;
    min-height: 40px;
    padding: 0 12px;
    background: var(--field);
    border: 1px solid var(--control-border);
    border-radius: 6px;
}

.teach-metronome-box input {
    min-height: 0;
    margin: 0;
    padding: 0;
    border: 0;
    background: none;
    accent-color: var(--primary);
}

#teach-metronome {
    flex: none;
    width: 16px;
    height: 16px;
}

#teach-volume {
    flex: 1;
    width: auto;
}

#teach-metronome:not(:checked) + #teach-volume {
    opacity: 0.45;
}

.teach-feedback {
    min-height: 40px;
    display: flex;
    flex-direction: column;
    margin-top: 14px;
    text-align: center;
}

.teach-feedback strong {
    font: 600 26px var(--mono);
    color: var(--accent);
}

.teach-stage .keyboard-surround {
    padding-top: 70px;
    padding-bottom: 60px;
}

.teach-key {
    --cue-color: var(--accent);
    --hit-color: var(--success);
}

.teach-key .note {
    font: 600 3.3cqi var(--mono);
    color: var(--text-soft);
    text-shadow: none;
    z-index: 4;
    pointer-events: none;
}

.teach-key.sharp-key {
    display: flex;
    align-items: center;
    justify-content: center;
}

.teach-key.target {
    border-color: var(--cue-color);
    background: color-mix(in srgb, var(--cue-color) 12%, var(--key-face));
}

.teach-key.sharp-key.target {
    background: var(--cue-color);
}

.teach-key.active {
    border-color: var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 0 12px color-mix(in srgb, var(--primary) 30%, transparent);
}

.teach-key.sharp-key.active {
    background: var(--primary);
}

.teach-key.hit {
    background: color-mix(in srgb, var(--hit-color) 18%, var(--key-face));
    border-color: var(--hit-color);
    box-shadow: 0 0 15px color-mix(in srgb, var(--hit-color) 35%, transparent);
}

.teach-key.missed {
    background: var(--danger-soft);
}

.approach-ring {
    position: absolute;
    inset: -3px;
    border: 2px solid var(--cue-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 5;
    transform-origin: center;
}

.approach-ring.current-cue {
    border-width: 3px;
    z-index: 6;
}

.key-burst {
    --effect-color: var(--press);
    position: absolute;
    inset: -4px;
    border: 2px solid var(--effect-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9;
    transform-origin: center;
    animation: key-press-pulse 180ms ease-out both;
}

.key-burst.burst-hit {
    border-width: 3px;
    box-shadow: 0 0 10px var(--effect-color);
    animation: key-hit-pulse 360ms ease-out both;
}

.key-burst.burst-miss {
    animation: key-miss-pulse 300ms ease-out both;
}

.key-hit-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--effect-color);
    font: 700 15px var(--mono);
    text-shadow:
        0 0 5px var(--surface),
        0 0 3px var(--surface);
}

.sharp-key .key-hit-label {
    font-size: 10px;
}

@keyframes key-press-pulse {
    from {
        transform: scale(0.85);
        opacity: 0.7;
    }

    to {
        transform: scale(1.35);
        opacity: 0;
    }
}

@keyframes key-hit-pulse {
    0% {
        transform: scale(0.95);
        opacity: 1;
    }

    45% {
        opacity: 0.85;
    }

    100% {
        transform: scale(1.65);
        opacity: 0;
    }
}

@keyframes key-miss-pulse {
    from {
        transform: scale(0.95);
        opacity: 0.9;
    }

    to {
        transform: scale(1.2);
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .key-burst,
    .key-burst.burst-hit,
    .key-burst.burst-miss {
        animation-duration: 1ms;
    }
}

.teach-upcoming {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    min-height: 36px;
    padding-bottom: 14px;
}

.teach-upcoming span {
    --cue-color: var(--muted);
    font: 11px var(--mono);
    border: 1px solid var(--cue-color);
    border-radius: 5px;
    padding: 5px 7px;
    color: var(--cue-color);
    opacity: 0.65;
}

.teach-upcoming span:first-child {
    opacity: 1;
    font-weight: 600;
}

.teach-results {
    margin-top: 20px;
}

.teach-score-card {
    margin-top: 20px;
    min-width: 0;
}

.teach-stage {
    align-self: start;
    scroll-margin-top: 16px;
}

.teach-score-card .card-heading > .muted {
    font-size: 11px;
}

.teach-loop-settings input {
    width: 120px;
}

.teach-score-tools {
    margin-top: 16px;
}

.teach-score-tools button[aria-pressed="true"] {
    color: var(--primary-text);
    border-color: var(--primary);
    background: var(--primary-soft);
}

#teach-loop-range {
    font-size: 12px;
}

.teach-score {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr));
    grid-auto-rows: max-content;
    align-items: start;
    align-content: start;
    gap: 6px;
    margin-top: 14px;
    max-height: 300px;
    overflow: auto;
    scrollbar-gutter: stable;
    padding: 3px;
}

.teach-score.multi-track {
    max-height: min(65vh, 620px);
}

.score-bar {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 7px;
    overflow: auto;
}

.score-bar-heading {
    font: 10px var(--mono);
    color: var(--muted);
    padding: 4px 7px;
    border-bottom: 1px solid var(--line);
}

.score-track + .score-track {
    border-top: 1px solid var(--line);
}

.score-track-heading {
    padding: 5px 7px;
    font-size: 10px;
    color: var(--text-soft);
    background: var(--surface-sunken);
    overflow-wrap: anywhere;
}

.score-beats {
    display: grid;
    min-height: 50px;
}

.score-beat {
    position: relative;
    min-width: 32px;
    padding: 16px 4px 4px;
    border-right: 1px solid var(--line-soft);
    cursor: pointer;
    user-select: none;
    touch-action: pan-y;
}

.score-beat:last-child {
    border-right: 0;
}

.score-beat.selected {
    background: var(--primary-soft);
}

.score-beat.current {
    box-shadow: inset 0 -4px var(--primary);
    background: color-mix(in srgb, var(--primary) 30%, var(--surface));
}

.score-beat:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}

.score-beat.range-a::before,
.score-beat.range-b::after {
    position: absolute;
    top: 5px;
    font: 10px var(--mono);
    font-weight: bold;
    color: var(--primary-text);
}

.score-beat.range-a::before {
    content: "A";
    left: 5px;
}

.score-beat.range-b::after {
    content: "B";
    right: 5px;
}

.score-beat-number {
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    font: 9px var(--mono);
    color: var(--faint);
}

.score-events {
    display: grid;
    gap: 3px;
    align-items: center;
    justify-items: center;
    min-height: 30px;
}

.score-key-change {
    font: 9px var(--mono);
    color: var(--accent);
    white-space: nowrap;
    align-self: flex-start;
}

.score-chord {
    display: flex;
    flex-direction: column;
    min-width: 0;
    align-items: center;
}

.score-note {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 15px;
    cursor: pointer;
}

.score-digit {
    font: 600 17px var(--mono);
    color: var(--text-strong);
    line-height: 1;
}

.score-octave {
    font: bold 14px var(--mono);
    line-height: 6px;
    min-height: 6px;
}

.score-rest {
    font: 18px var(--mono);
    color: var(--faint);
}

.teach-score-pages {
    justify-content: center;
    margin-top: 16px;
    font-size: 11px;
}

.teach-key.satisfied,
.teach-key.peek {
    background: var(--success-soft);
    border-color: var(--success);
}

.teach-key.sharp-key.satisfied,
.teach-key.sharp-key.peek {
    background: var(--success);
}

.next-round-ring {
    border-style: dashed;
    opacity: 0.4;
}

.teach-round-history {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    font-size: 12px;
    color: var(--text-soft);
}

.teach-round-history > div {
    padding: 10px;
    background: var(--surface-sunken);
    border-radius: 5px;
}

.teach-result-main {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 20px;
    margin: 18px 0;
}

.teach-result-main strong {
    font: 40px var(--mono);
    color: var(--accent);
}

.teach-final-rank {
    padding: 6px 12px;
    border-radius: 8px;
    background: var(--primary-soft);
    color: var(--primary-text);
    font: 700 32px var(--mono);
}

.teach-result-counts {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    font: 12px var(--mono);
    margin-bottom: 16px;
}

.teach-result-counts b {
    display: block;
    font-size: 22px;
    margin-top: 7px;
    color: var(--text-strong);
}

#teach-summary {
    overflow-wrap: anywhere;
}

#teach-time {
    font: 11px var(--mono);
    white-space: nowrap;
}

#teach-upload:has(input:disabled) {
    opacity: 0.45;
    cursor: default;
}

@media (max-width: 1000px) {
    .teach-grid {
        grid-template-columns: minmax(0, 1fr) 235px;
    }
}

@media (max-width: 700px) {
    .teach-grid {
        grid-template-columns: minmax(0, 1fr);
    }

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

    .teach-stage .keyboard-surround {
        padding-top: 48px;
        padding-bottom: 42px;
    }

    .teach-feedback strong {
        font-size: 22px;
    }

    .teach-score {
        grid-template-columns: minmax(0, 1fr);
        max-height: 300px;
    }

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