.settings-panel.open {
    max-height: var(--settings-panel-max-height, 1700px);
}

.find-interval-prompt-card {
    display: grid;
    gap: 0.5rem;
    padding: 1.35rem 1.5rem;
    border-radius: 1.2rem;
    background: linear-gradient(160deg, rgba(17, 33, 54, 0.92), rgba(10, 18, 32, 0.95));
    border: 1px solid rgba(116, 195, 255, 0.2);
    box-shadow: 0 20px 45px rgba(7, 12, 20, 0.28);
}

.find-interval-prompt-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(174, 214, 255, 0.82);
}

.find-interval-prompt-interval {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1;
    color: #f7fbff;
}

.find-interval-prompt-root,
.find-interval-board-help {
    color: rgba(222, 236, 250, 0.78);
}

.find-interval-prompt-root {
    font-size: 1rem;
    font-weight: 700;
}

.find-interval-context-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
}

.find-interval-context-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.9rem;
    padding: 0.32rem 0.7rem;
    border-radius: 999px;
    border: 1px solid rgba(173, 206, 236, 0.2);
    background: rgba(255, 255, 255, 0.06);
    color: rgba(246, 250, 255, 0.92);
    font-size: 0.74rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.find-interval-context-chip.is-default {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(173, 206, 236, 0.2);
}

.find-interval-context-chip.is-accent {
    background: rgba(69, 142, 214, 0.22);
    border-color: rgba(126, 193, 255, 0.48);
    box-shadow: 0 0 0 0.14rem rgba(79, 164, 243, 0.12);
}

.find-interval-context-chip.is-lower {
    background: rgba(241, 169, 76, 0.22);
    border-color: rgba(255, 207, 128, 0.52);
    color: #fff4dc;
    box-shadow: 0 0 0 0.14rem rgba(241, 169, 76, 0.12);
}

.find-interval-context-chip.is-higher {
    background: rgba(69, 142, 214, 0.24);
    border-color: rgba(126, 193, 255, 0.52);
    color: #eff8ff;
    box-shadow: 0 0 0 0.14rem rgba(79, 164, 243, 0.12);
}

.find-interval-context-chip.is-success {
    background: rgba(40, 169, 102, 0.2);
    border-color: rgba(106, 225, 160, 0.48);
}

.find-interval-context-chip.is-subtle {
    background: rgba(9, 16, 26, 0.28);
    border-color: rgba(176, 214, 245, 0.16);
    color: rgba(226, 238, 249, 0.78);
}

.find-interval-prompt-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    align-items: center;
    padding-top: 0.1rem;
}

.find-interval-prompt-action-btn {
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.2rem;
    padding: 0.48rem 0.88rem;
    border-radius: 999px;
    border: 1px solid rgba(154, 204, 247, 0.28);
    background: rgba(246, 250, 255, 0.08);
    color: rgba(244, 249, 255, 0.92);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}

.find-interval-prompt-action-btn:hover {
    transform: translateY(-1px);
    background: rgba(246, 250, 255, 0.14);
    border-color: rgba(184, 223, 255, 0.42);
}

.find-interval-prompt-action-btn:focus-visible {
    outline: 2px solid rgba(118, 198, 255, 0.88);
    outline-offset: 2px;
}

.find-interval-prompt-action-btn.is-active,
.find-interval-prompt-action-btn[aria-pressed="true"] {
    background: linear-gradient(160deg, rgba(98, 166, 242, 0.34), rgba(70, 128, 220, 0.42));
    border-color: rgba(132, 198, 255, 0.68);
    box-shadow: 0 0 0 0.18rem rgba(93, 174, 255, 0.16);
}

.find-interval-status-banner {
    display: grid;
    gap: 0.6rem;
    justify-items: center;
    padding: 0.8rem 1rem 0.9rem;
}

.find-interval-status-banner-main {
    max-width: 58rem;
}

.find-interval-status-banner-progress {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    width: 100%;
}

.find-interval-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 7.25rem;
    justify-content: center;
    padding: 0.42rem 0.78rem;
    border-radius: 999px;
    border: 1px solid rgba(176, 214, 245, 0.24);
    background: rgba(255, 255, 255, 0.05);
    --status-accent-rgb: 176, 214, 245;
    --status-accent-text: #f7fbff;
}

.find-interval-status-chip-label {
    display: inline-flex;
    align-items: center;
    gap: 0.34rem;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(214, 231, 246, 0.7);
}

.find-interval-status-chip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.2rem;
    height: 1.2rem;
    border-radius: 999px;
    background: rgba(var(--status-accent-rgb), 0.18);
    color: var(--status-accent-text);
    font-size: 0.8rem;
    line-height: 1;
}

.find-interval-status-chip-value {
    font-size: 0.92rem;
    font-weight: 800;
    color: #f7fbff;
}

.find-interval-status-chip.is-lower {
    --status-accent-rgb: 241, 169, 76;
    --status-accent-text: #ffd99d;
}

.find-interval-status-chip.is-higher {
    --status-accent-rgb: 92, 185, 255;
    --status-accent-text: #bfe8ff;
}

.find-interval-status-chip.is-ready {
    border-color: rgba(var(--status-accent-rgb), 0.24);
    background: rgba(var(--status-accent-rgb), 0.08);
}

.find-interval-status-chip.is-next {
    border-color: rgba(var(--status-accent-rgb), 0.62);
    background: rgba(var(--status-accent-rgb), 0.2);
    box-shadow: 0 0 0 0.18rem rgba(var(--status-accent-rgb), 0.14);
}

.find-interval-status-chip.is-found {
    border-color: rgba(var(--status-accent-rgb), 0.74);
    background: rgba(var(--status-accent-rgb), 0.3);
    box-shadow: 0 0 0 0.14rem rgba(var(--status-accent-rgb), 0.12);
}

.find-interval-status-next {
    padding: 0.42rem 0.84rem;
    border-radius: 999px;
    background: rgba(9, 16, 26, 0.32);
    border: 1px solid rgba(176, 214, 245, 0.18);
    color: #f7fbff;
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.find-interval-breakdown-grid {
    margin-top: 1rem;
}

.find-interval-breakdown-panel {
    min-width: 0;
}

.surface-overlay-layer {
    position: absolute;
    inset: 0;
    z-index: 24;
    pointer-events: none;
}

.notes {
    z-index: 30;
}

.practice-note-layer,
.stats-heatmap-layer {
    position: absolute;
    inset: 0;
    z-index: 30;
}

.practice-note-layer {
    pointer-events: auto;
}

.stats-heatmap-layer {
    overflow: hidden;
    border-radius: inherit;
}

.find-interval-practice-dot {
    position: absolute;
    width: 1.65rem;
    height: 1.65rem;
    border-radius: 999px;
    transform: translate(-50%, -50%);
}

.find-interval-practice-dot {
    appearance: none;
    display: grid;
    place-items: center;
    padding: 0;
    border: 1px solid rgba(183, 218, 255, 0.46);
    background: rgba(215, 233, 250, 0.18);
    box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.24), 0 0 0 0 rgba(70, 175, 255, 0);
    cursor: pointer;
    z-index: 2;
    touch-action: manipulation;
    pointer-events: auto;
    user-select: none;
    transition: transform 0.16s ease, background 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.find-interval-practice-dot:hover {
    transform: translate(-50%, -50%) scale(1.06);
    background: rgba(215, 233, 250, 0.28);
}

.find-interval-practice-dot.correct {
    background: rgba(56, 196, 115, 0.9);
    border-color: rgba(150, 255, 190, 0.95);
    box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.2), 0 0 0 0.32rem rgba(56, 196, 115, 0.18);
}

.find-interval-practice-dot.found {
    background: rgba(56, 196, 115, 0.42);
    border-color: rgba(150, 255, 190, 0.72);
    box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.18), 0 0 0 0.16rem rgba(56, 196, 115, 0.12);
}

.find-interval-practice-dot.labeled {
    color: #f8fbff;
    font-size: 0.74rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    text-shadow: 0 1px 2px rgba(7, 14, 23, 0.55);
}

.find-interval-practice-dot.found.correct {
    background: rgba(56, 196, 115, 0.9);
    border-color: rgba(150, 255, 190, 0.95);
    box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.2), 0 0 0 0.32rem rgba(56, 196, 115, 0.18);
}

.find-interval-practice-dot.wrong {
    background: rgba(227, 82, 82, 0.92);
    border-color: rgba(255, 171, 171, 0.95);
    box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.2), 0 0 0 0.32rem rgba(227, 82, 82, 0.18);
}

.find-interval-practice-dot.outside-area {
    opacity: 0.22;
    cursor: default;
    pointer-events: none;
}

.find-interval-practice-dot.non-interactive {
    cursor: default;
    pointer-events: none;
}

.find-interval-surface-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.find-interval-surface-mask {
    position: absolute;
    background: rgba(11, 18, 28, 0.62);
    border: 1px solid rgba(135, 165, 196, 0.08);
}

.find-interval-root-anchor {
    position: absolute;
    display: grid;
    place-items: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 999px;
    transform: translate(-50%, -50%);
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: #07101a;
    background: linear-gradient(160deg, #ffe48a, #ffb73d);
    border: 1px solid rgba(255, 245, 187, 0.92);
    box-shadow: 0 0 0 1px rgba(13, 20, 31, 0.24), 0 0 0 0.38rem rgba(255, 183, 61, 0.16);
    pointer-events: none;
    z-index: 40;
}

.find-interval-root-anchor::before {
    content: attr(data-target-interval);
    position: absolute;
    top: -0.42rem;
    right: -0.5rem;
    min-width: 1.35rem;
    min-height: 1.35rem;
    padding: 0.12rem 0.28rem;
    border-radius: 999px;
    background: rgba(7, 16, 26, 0.92);
    border: 1px solid rgba(162, 197, 227, 0.34);
    color: #f7fbff;
    font-size: 0.62rem;
    font-weight: 900;
    line-height: 1.1;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 14px rgba(7, 14, 23, 0.24);
}

.find-interval-root-anchor[data-target-interval]::before {
    display: inline-flex;
}

.find-interval-root-anchor[data-target-interval=""]::before {
    display: none;
}

.find-interval-practice-dot.find-interval-success-flash {
    animation: find-interval-success-flash 420ms ease-out forwards;
}

.find-interval-root-anchor::after {
    content: attr(data-root-note);
    position: absolute;
    top: calc(100% + 0.28rem);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.15rem 0.4rem;
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 700;
    color: #f6fbff;
    background: rgba(7, 16, 26, 0.82);
    border: 1px solid rgba(162, 197, 227, 0.28);
    white-space: nowrap;
}

.find-interval-walk-anchor {
    position: absolute;
    display: grid;
    place-items: center;
    min-width: 2rem;
    height: 2rem;
    padding: 0 0.42rem;
    border-radius: 999px;
    transform: translate(-50%, -50%);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: #f4fbff;
    background: linear-gradient(160deg, #2a6b6e, #143e50);
    border: 1px solid rgba(144, 229, 228, 0.6);
    box-shadow: 0 0 0 1px rgba(11, 20, 28, 0.22), 0 0 0 0.28rem rgba(38, 176, 179, 0.16);
    pointer-events: none;
    z-index: 39;
}

.find-interval-heatmap-dot {
    position: absolute;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 18px;
    border-radius: 999px;
    border: 2px solid var(--heatmap-border, rgba(255, 255, 255, 0.35));
    background: var(--heatmap-fill, rgba(187, 198, 214, 0.45));
    box-shadow: 0 0 0 4px var(--heatmap-halo, rgba(187, 198, 214, 0.12));
    color: transparent;
    cursor: pointer;
    pointer-events: auto;
    opacity: 0.92;
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
    z-index: 20;
}

.find-interval-heatmap-dot::after {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 999px;
    border: 2px solid var(--heatmap-ambiguous-ring, transparent);
    opacity: 0;
    transform: scale(0.96);
    transition: opacity 0.18s ease, transform 0.18s ease;
    pointer-events: none;
}

.find-interval-heatmap-dot:hover {
    transform: translate(-50%, -50%) scale(1.12);
    box-shadow: 0 0 0 5px var(--heatmap-halo, rgba(187, 198, 214, 0.18));
}

.find-interval-heatmap-dot.selected {
    transform: translate(-50%, -50%) scale(1.22);
    box-shadow:
        0 0 0 3px rgba(255, 255, 255, 0.9),
        0 0 0 8px var(--heatmap-halo, rgba(187, 198, 214, 0.18));
    z-index: 24;
}

.find-interval-heatmap-dot.empty {
    opacity: 0.72;
}

.find-interval-heatmap-dot.has-ambiguous::after {
    opacity: 1;
    transform: scale(1);
}

.find-interval-heatmap-dot.labeled {
    width: 26px;
    height: 26px;
    color: rgba(245, 250, 255, 0.96);
}

.find-interval-heatmap-dot-label {
    position: relative;
    z-index: 1;
    font-size: 0.62rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.01em;
    text-shadow: 0 1px 2px rgba(7, 14, 23, 0.58);
    pointer-events: none;
}

.find-interval-legend-text {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.stats-chart-axis {
    stroke: rgba(255, 255, 255, 0.16);
    stroke-width: 1;
}

.stats-chart-grid-line {
    stroke: rgba(255, 255, 255, 0.07);
    stroke-width: 1;
}

.stats-chart-bar-fretboard {
    fill: rgba(231, 186, 88, 0.84);
}

.stats-chart-bar-play-guitar {
    fill: rgba(141, 208, 95, 0.82);
}

.all-practice-lifetime-panel {
    display: grid;
    gap: 0.75rem;
}

.all-practice-overview {
    display: grid;
    gap: 0.48rem;
}

.all-practice-score-strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.28rem;
}

.fret-score-strip {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0.28rem;
}

.fret-score-chip {
    min-width: 0;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
        "swatch label"
        "swatch value"
        "swatch note";
    gap: 0.04rem 0.34rem;
    align-items: center;
    padding: 0.34rem 0.42rem;
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(255, 255, 255, 0.07);
}

.fret-score-chip .legend-swatch {
    grid-area: swatch;
    width: 0.58rem;
    height: 0.58rem;
}

.fret-score-label {
    grid-area: label;
    display: inline-flex;
    align-items: center;
    gap: 0.22rem;
    color: rgba(255, 255, 255, 0.56);
    font-size: 0.58rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.fret-score-chip strong {
    grid-area: value;
    color: #ffffff;
    font-size: 0.86rem;
    font-weight: 900;
    overflow-wrap: anywhere;
}

.fret-score-chip small {
    grid-area: note;
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.66rem;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.all-practice-chart-summary {
    display: grid;
    gap: 0.3rem;
    margin-bottom: 0.55rem;
}

.all-practice-chart-summary-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.45rem;
}

.all-practice-chart-summary .heatmap-summary {
    justify-content: flex-start;
    flex: 1 1 auto;
}

.all-practice-chart-summary-info {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    padding-top: 0.1rem;
    flex: 0 0 auto;
}

.all-practice-chart-summary-chip {
    font-size: 0.76rem;
    font-weight: 800;
}

.all-practice-chart-summary-chip .legend-swatch {
    width: 0.58rem;
    height: 0.58rem;
    border-radius: 50%;
    flex: 0 0 auto;
}

.all-practice-chart-summary-chip .all-practice-card-swatch-today {
    background: rgba(106, 210, 224, 0.92);
    box-shadow: 0 0 0 3px rgba(106, 210, 224, 0.12);
}

.all-practice-chart-summary-chip .all-practice-card-swatch-fretboard {
    background: rgba(231, 186, 88, 0.92);
    box-shadow: 0 0 0 3px rgba(231, 186, 88, 0.12);
}

.all-practice-chart-summary-chip .all-practice-card-swatch-guitar {
    background: rgba(141, 208, 95, 0.9);
    box-shadow: 0 0 0 3px rgba(141, 208, 95, 0.12);
}

.all-practice-chart-summary-chip.is-fretboard {
    border-color: rgba(231, 186, 88, 0.2);
    background: rgba(231, 186, 88, 0.08);
}

.all-practice-chart-summary-chip.is-guitar {
    border-color: rgba(141, 208, 95, 0.2);
    background: rgba(141, 208, 95, 0.08);
}

.all-practice-chart-summary-chip.is-today {
    border-color: rgba(106, 210, 224, 0.2);
    background: rgba(106, 210, 224, 0.08);
}

.stats-chart-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.35rem;
}

.stats-chart-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.32rem;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.72rem;
    font-weight: 800;
}

.stats-chart-legend-swatch {
    width: 0.58rem;
    height: 0.58rem;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.4);
}

.stats-chart-legend-swatch.source-fretboard {
    background: rgba(231, 186, 88, 0.82);
}

.stats-chart-legend-swatch.source-play-guitar {
    background: rgba(141, 208, 95, 0.76);
}

.stats-chart-label,
.stats-chart-value {
    fill: rgba(255, 255, 255, 0.68);
    font-size: 9px;
    font-weight: 700;
}

.stats-chart-label {
    fill: rgba(255, 255, 255, 0.58);
}

.stats-chart-value {
    fill: rgba(255, 255, 255, 0.82);
}

.stats-chart-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 86px;
    border: 1px dashed rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.86rem;
    font-weight: 700;
}

.stats-context-bars {
    display: grid;
    gap: 0.42rem;
}

.stats-context-row {
    display: grid;
    grid-template-columns: 4.8rem minmax(0, 1fr) 2.8rem;
    gap: 0.5rem;
    align-items: center;
    font-size: 0.78rem;
}

.stats-context-row.response-row {
    grid-template-areas:
        "label track value"
        "note note note";
}

.stats-context-label {
    grid-area: label;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.74);
    text-transform: capitalize;
}

.stats-context-track {
    grid-area: track;
    height: 0.58rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    overflow: hidden;
}

.stats-context-fill {
    display: block;
    height: 100%;
    min-width: 2px;
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(40, 199, 214, 0.92), rgba(79, 145, 223, 0.86));
}

.stats-context-row[data-source="play-guitar"] .stats-context-fill {
    background: linear-gradient(90deg, rgba(143, 230, 63, 0.88), rgba(35, 183, 201, 0.84));
}

.stats-context-value {
    grid-area: value;
    font-weight: 800;
    color: #ffffff;
    text-align: right;
}

.stats-context-note {
    grid-area: note;
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.7rem;
    font-weight: 700;
}

.stats-breakdown-chart {
    gap: 0.55rem;
}

.stats-breakdown-chart-row {
    grid-template-columns: minmax(6rem, 7.8rem) minmax(0, 1fr) 3.75rem;
    gap: 0.42rem 0.55rem;
}

.stats-breakdown-chart-row .stats-context-label {
    line-height: 1.15;
}

.stats-breakdown-chart-row .stats-context-track {
    height: 0.62rem;
}

.stats-breakdown-chart-row .stats-context-fill {
    background: linear-gradient(90deg, rgba(123, 187, 239, 0.94), rgba(73, 157, 223, 0.86));
}

.stats-breakdown-chart-row[data-empty-metric="true"] .stats-context-track {
    background: rgba(255, 255, 255, 0.05);
}

.stats-breakdown-chart-row[data-empty-metric="true"] .stats-context-fill {
    min-width: 0;
}

.find-interval-event-list {
    display: grid;
    gap: 0.75rem;
    margin-top: 1rem;
}

.find-interval-event-item {
    padding: 0.9rem 1rem;
    border-radius: 0.95rem;
    background: rgba(9, 19, 32, 0.5);
    border: 1px solid rgba(142, 176, 207, 0.16);
}

.find-interval-event-title {
    font-weight: 700;
    color: #f4f8fc;
}

.find-interval-event-meta {
    margin-top: 0.3rem;
    color: rgba(213, 226, 238, 0.72);
}

.find-interval-play-guide {
    display: grid;
    gap: 0.85rem;
    margin-top: 0.85rem;
    padding: 1rem 1.1rem 1.05rem;
    border-radius: 20px;
    background:
        radial-gradient(circle at top left, rgba(100, 179, 255, 0.12), transparent 32%),
        linear-gradient(180deg, rgba(10, 18, 27, 0.82) 0%, rgba(7, 13, 20, 0.94) 100%);
    border: 1px solid rgba(175, 214, 247, 0.14);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 16px 30px rgba(0, 0, 0, 0.18);
}

.find-interval-play-guide.matched {
    border-color: rgba(93, 197, 130, 0.44);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 0 1px rgba(93, 197, 130, 0.18);
}

.find-interval-play-guide.mismatched {
    border-color: rgba(236, 122, 92, 0.48);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 0 1px rgba(236, 122, 92, 0.18);
}

.find-interval-play-guide.success {
    border-color: rgba(128, 214, 155, 0.7);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 0 2px rgba(128, 214, 155, 0.22);
}

.find-interval-play-guide-header {
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 0.4rem 0.8rem;
    align-items: center;
}

.find-interval-play-guide-title {
    color: rgba(234, 239, 247, 0.72);
    font-size: 0.74rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.find-interval-play-guide-state {
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.92rem;
    font-weight: 700;
    text-align: right;
}

.find-interval-play-guide-coach {
    display: grid;
    gap: 0.3rem;
    padding: 0.78rem 0.92rem;
    border-radius: 16px;
    border: 1px solid rgba(169, 208, 241, 0.12);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
    color: #f8fbff;
    font-size: clamp(1rem, 2vw, 1.18rem);
    font-weight: 800;
    line-height: 1.3;
}

.find-interval-play-guide-coach.is-info {
    border-color: rgba(169, 208, 241, 0.12);
}

.find-interval-play-guide-coach.is-success {
    border-color: rgba(93, 197, 130, 0.3);
    background: linear-gradient(180deg, rgba(93, 197, 130, 0.16), rgba(93, 197, 130, 0.06));
}

.find-interval-play-guide-coach.is-error {
    border-color: rgba(236, 122, 92, 0.34);
    background: linear-gradient(180deg, rgba(236, 122, 92, 0.16), rgba(236, 122, 92, 0.06));
}

.find-interval-play-guide-pair-sides {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
}

.find-interval-play-guide-side {
    display: grid;
    gap: 0.45rem;
    padding: 0.82rem 0.9rem;
    border-radius: 16px;
    border: 1px solid rgba(var(--pair-side-rgb), 0.22);
    background: linear-gradient(180deg, rgba(var(--pair-side-rgb), 0.14), rgba(var(--pair-side-rgb), 0.06));
    --pair-side-rgb: 169, 208, 241;
    --pair-side-text: #f7fbff;
}

.find-interval-play-guide-side.is-lower {
    --pair-side-rgb: 241, 169, 76;
    --pair-side-text: #ffd89a;
}

.find-interval-play-guide-side.is-higher {
    --pair-side-rgb: 92, 185, 255;
    --pair-side-text: #c4eaff;
}

.find-interval-play-guide-side.is-ready {
    opacity: 0.92;
}

.find-interval-play-guide-side.is-next {
    border-color: rgba(var(--pair-side-rgb), 0.62);
    box-shadow: 0 0 0 0.18rem rgba(var(--pair-side-rgb), 0.12);
}

.find-interval-play-guide-side.is-found {
    border-color: rgba(var(--pair-side-rgb), 0.76);
    background: linear-gradient(180deg, rgba(var(--pair-side-rgb), 0.26), rgba(var(--pair-side-rgb), 0.1));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 0 0.14rem rgba(var(--pair-side-rgb), 0.12);
}

.find-interval-play-guide-side-header {
    display: flex;
    justify-content: space-between;
    gap: 0.6rem;
    align-items: center;
}

.find-interval-play-guide-side-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-width: 0;
}

.find-interval-play-guide-side-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: rgba(var(--pair-side-rgb), 0.2);
    color: var(--pair-side-text);
    font-size: 1rem;
    font-weight: 900;
    line-height: 1;
}

.find-interval-play-guide-side-label {
    color: var(--pair-side-text);
    font-size: 1rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.find-interval-play-guide-side-state {
    color: #f7fbff;
    font-size: 0.98rem;
    font-weight: 900;
}

.find-interval-play-guide-label {
    color: rgba(234, 239, 247, 0.64);
    font-size: 0.66rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.find-interval-play-guide-telemetry {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
}

.find-interval-play-guide-telemetry-card {
    display: grid;
    gap: 0.3rem;
    padding: 0.72rem 0.78rem;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.find-interval-play-guide-telemetry-card.mismatch {
    background: rgba(236, 122, 92, 0.12);
    border-color: rgba(236, 122, 92, 0.32);
}

.find-interval-play-guide-telemetry-value {
    color: #ffffff;
    font-size: clamp(1rem, 2vw, 1.28rem);
    font-weight: 900;
}

.find-interval-play-input-meter {
    display: grid;
    gap: 0.34rem;
}

.find-interval-play-input-meter-header {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    align-items: baseline;
}

.find-interval-play-input-meter-value {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.82rem;
    font-weight: 900;
}

.find-interval-play-input-meter-track {
    position: relative;
    height: 8px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.find-interval-play-input-meter-fill {
    width: 0;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(98, 166, 242, 0.92) 0%, rgba(84, 212, 176, 0.95) 58%, rgba(245, 205, 96, 0.95) 100%);
    box-shadow: 0 0 14px rgba(84, 212, 176, 0.24);
    transition: width 0.08s linear;
}

.find-interval-play-meter {
    display: grid;
    gap: 0.38rem;
}

.find-interval-play-meter-scale {
    display: flex;
    justify-content: space-between;
    color: rgba(234, 239, 247, 0.58);
    font-size: 0.68rem;
    font-weight: 800;
}

.find-interval-play-meter-track {
    position: relative;
    height: 14px;
    border-radius: 999px;
    background:
        linear-gradient(90deg, rgba(224, 111, 74, 0.72) 0%, rgba(228, 180, 95, 0.72) 24%, rgba(76, 193, 119, 0.8) 50%, rgba(228, 180, 95, 0.72) 76%, rgba(224, 111, 74, 0.72) 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.find-interval-play-meter-center {
    position: absolute;
    top: -3px;
    bottom: -3px;
    left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.92);
    border-radius: 999px;
    opacity: 0.9;
}

.find-interval-play-meter-needle {
    position: absolute;
    top: 50%;
    width: 4px;
    height: 26px;
    border-radius: 999px;
    background: #ffffff;
    box-shadow: 0 0 0 2px rgba(7, 13, 20, 0.35), 0 6px 16px rgba(255, 255, 255, 0.18);
    transform: translate(-50%, -50%);
    transition: left 0.08s linear;
}

.find-interval-play-stats-panel {
    display: grid;
    gap: 0.8rem;
}

.find-interval-stats-view-header {
    display: flex;
    justify-content: center;
}

.find-interval-stats-view-toggle {
    max-width: 100%;
}

.find-interval-stats-view-toggle .mode-btn {
    padding-inline: 0.88rem;
}

.stats-view-section {
    display: grid;
    gap: 0.8rem;
}

.find-interval-detail-grid {
    display: grid;
    gap: 0.8rem;
}

.find-interval-detail-note {
    color: rgba(214, 226, 239, 0.78);
}

@keyframes find-interval-success-flash {
    0% {
        background: rgba(126, 255, 176, 0.96);
        border-color: rgba(209, 255, 224, 0.98);
        box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.18), 0 0 0 0.44rem rgba(78, 220, 131, 0.24);
        transform: translate(-50%, -50%) scale(1);
    }

    60% {
        background: rgba(86, 213, 132, 0.92);
        border-color: rgba(170, 255, 199, 0.98);
        box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.18), 0 0 0 0.38rem rgba(56, 196, 115, 0.18);
        transform: translate(-50%, -50%) scale(1.12);
    }

    100% {
        background: rgba(56, 196, 115, 0.9);
        border-color: rgba(150, 255, 190, 0.95);
        box-shadow: 0 0 0 1px rgba(7, 14, 23, 0.2), 0 0 0 0.32rem rgba(56, 196, 115, 0.18);
        transform: translate(-50%, -50%) scale(1);
    }
}

@media (max-width: 720px) {
    .settings-panel.open {
        max-height: var(--settings-panel-max-height, 2400px);
    }

    .all-practice-score-strip,
    .fret-score-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .all-practice-chart-summary-row {
        flex-direction: column;
        align-items: stretch;
    }

    .all-practice-chart-summary-info {
        justify-content: flex-start;
    }

    .find-interval-status-banner {
        gap: 0.5rem;
    }

    .find-interval-status-banner-main {
        font-size: 0.98rem;
    }

    .find-interval-status-banner-progress {
        gap: 0.45rem;
    }

    .find-interval-status-chip,
    .find-interval-status-next {
        width: 100%;
    }

    .find-interval-root-anchor {
        width: 2.1rem;
        height: 2.1rem;
    }

    .find-interval-root-anchor::before {
        right: -0.28rem;
    }

    .find-interval-practice-dot {
        width: 1.45rem;
        height: 1.45rem;
    }

    .find-interval-walk-anchor {
        min-width: 1.75rem;
        height: 1.75rem;
        padding: 0 0.32rem;
        font-size: 0.66rem;
    }

    .find-interval-heatmap-dot {
        width: 16px;
        height: 16px;
    }

    .find-interval-play-guide-pair-sides,
    .find-interval-play-guide-telemetry {
        grid-template-columns: 1fr;
    }

    .find-interval-play-guide-header {
        flex-wrap: wrap;
    }

    .find-interval-play-guide-state {
        width: 100%;
        text-align: left;
    }

    .find-interval-prompt-actions {
        gap: 0.45rem;
    }

    .find-interval-prompt-action-btn {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .all-practice-score-strip,
    .fret-score-strip {
        grid-template-columns: 1fr;
    }

    .all-practice-chart-summary .heatmap-chip {
        width: 100%;
        justify-content: space-between;
    }

    .find-interval-heatmap-dot {
        width: 14px;
        height: 14px;
    }
}