/* ============================================================
   Pitch Detector — Advanced Tool Styles (Best-in-Class)
   ============================================================ */

/* ── Enhanced Note Display ── */
.note-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-lg) 0 0;
    position: relative;
}

.note-display__note {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 6rem);
    color: var(--color-primary);
    text-shadow: 0 0 24px rgba(0, 255, 65, 0.5);
    line-height: 1;
    letter-spacing: 0.05em;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.note-display__note--intune {
    color: #00e676;
    text-shadow: 0 0 30px rgba(0, 230, 118, 0.6), 0 0 60px rgba(0, 230, 118, 0.2);
    animation: inTunePulse 1.5s ease-in-out infinite;
}

.note-display__note--close {
    color: var(--color-warning);
    text-shadow: 0 0 20px rgba(255, 179, 0, 0.5);
}

.note-display__note--off {
    color: var(--color-error);
    text-shadow: 0 0 20px rgba(255, 23, 68, 0.5);
}

@keyframes inTunePulse {

    0%,
    100% {
        text-shadow: 0 0 30px rgba(0, 230, 118, 0.6), 0 0 60px rgba(0, 230, 118, 0.2);
    }

    50% {
        text-shadow: 0 0 40px rgba(0, 230, 118, 0.8), 0 0 80px rgba(0, 230, 118, 0.3);
    }
}

.note-display__octave {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--color-secondary);
    text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
    line-height: 1;
}

.note-display__hz {
    text-align: center;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

/* Accuracy Badge */
.accuracy-badge {
    display: block;
    text-align: center;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 3px 12px;
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-md);
    width: fit-content;
    transition: all 0.2s ease;
}

.accuracy-badge--intune {
    color: #00e676;
    background: rgba(0, 230, 118, 0.1);
    border: 1px solid rgba(0, 230, 118, 0.3);
}

.accuracy-badge--close {
    color: var(--color-warning);
    background: rgba(255, 179, 0, 0.1);
    border: 1px solid rgba(255, 179, 0, 0.3);
}

.accuracy-badge--sharp {
    color: var(--color-error);
    background: rgba(255, 23, 68, 0.1);
    border: 1px solid rgba(255, 23, 68, 0.3);
}

.accuracy-badge--flat {
    color: var(--color-error);
    background: rgba(255, 23, 68, 0.1);
    border: 1px solid rgba(255, 23, 68, 0.3);
}

.accuracy-badge--idle {
    color: var(--color-text-muted);
    background: rgba(128, 128, 128, 0.1);
    border: 1px solid var(--color-border);
}

/* ── Pitch Accuracy Bar ── */
.pitch-bar {
    margin-bottom: var(--space-sm);
}

.pitch-bar__track {
    position: relative;
    height: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

/* Green zone indicator in the center */
.pitch-bar__zone {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 40%;
    width: 20%;
    background: rgba(0, 230, 118, 0.08);
    border-left: 1px solid rgba(0, 230, 118, 0.15);
    border-right: 1px solid rgba(0, 230, 118, 0.15);
    z-index: 1;
}

.pitch-bar__center {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-primary);
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 6px rgba(0, 255, 65, 0.6);
}

.pitch-bar__needle {
    position: absolute;
    top: 2px;
    bottom: 2px;
    width: 10px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    transition: left 0.1s ease, background 0.2s ease;
    transform: translateX(-50%);
    z-index: 3;
    box-shadow: 0 0 8px rgba(0, 255, 65, 0.6);
}

.pitch-bar__needle--sharp {
    background: var(--color-warning);
    box-shadow: 0 0 8px rgba(255, 179, 0, 0.6);
}

.pitch-bar__needle--flat {
    background: var(--color-error);
    box-shadow: 0 0 8px rgba(255, 23, 68, 0.6);
}

.pitch-bar__labels {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* ── Piano Keyboard ── */
.piano-wrap {
    margin-top: var(--space-xs);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-surface);
}

.piano-keyboard {
    display: flex;
    position: relative;
    height: 100px;
    min-width: 600px;
    user-select: none;
}

.piano-key {
    position: relative;
    flex: 1;
    border: 1px solid rgba(0, 255, 65, 0.15);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 6px;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    transition: background 0.1s ease, box-shadow 0.1s ease;
}

.piano-key--white {
    background: rgba(200, 200, 200, 0.08);
    color: var(--color-text-muted);
    z-index: 1;
}

.piano-key--black {
    background: var(--color-bg);
    border-color: rgba(0, 255, 65, 0.1);
    color: rgba(255, 255, 255, 0.3);
    position: absolute;
    width: 7%;
    height: 60%;
    z-index: 2;
    border-radius: 0 0 3px 3px;
    font-size: 0.45rem;
    padding-bottom: 4px;
}

.piano-key--white:hover {
    background: rgba(0, 255, 65, 0.08);
}

.piano-key--black:hover {
    background: rgba(0, 255, 65, 0.12);
}

.piano-key--active {
    background: rgba(0, 255, 65, 0.2) !important;
    border-color: var(--color-primary) !important;
    color: var(--color-primary) !important;
    box-shadow: 0 0 12px rgba(0, 255, 65, 0.4);
    font-weight: 700;
}

.piano-key--active.piano-key--intune {
    background: rgba(0, 230, 118, 0.25) !important;
    border-color: #00e676 !important;
    box-shadow: 0 0 16px rgba(0, 230, 118, 0.5);
}

.piano-key--active.piano-key--off {
    background: rgba(255, 179, 0, 0.15) !important;
    border-color: var(--color-warning) !important;
    box-shadow: 0 0 10px rgba(255, 179, 0, 0.3);
}

.piano-key--target {
    border-color: var(--color-secondary) !important;
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
}

.piano-key--target::after {
    content: '🎯';
    position: absolute;
    top: 4px;
    font-size: 0.6rem;
}

.piano-octave-labels {
    display: flex;
    min-width: 600px;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

.piano-octave-labels span {
    flex: 1;
    text-align: center;
}

/* ── Reference Tone ── */
.ref-tone-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.ref-tone-row__label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-secondary);
    text-transform: uppercase;
    white-space: nowrap;
}

.ref-tone-row .btn--ref {
    padding: 4px 12px;
    font-size: var(--fs-xs);
}

.ref-tone-row input[type="range"] {
    flex: 1;
    max-width: 120px;
}

/* ── Toggle Button (Sharps/Flats) ── */
.toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.toggle-btn:hover {
    border-color: var(--color-secondary);
}

.toggle-btn.active {
    border-color: var(--color-secondary);
    background: rgba(0, 229, 255, 0.1);
}

/* ── Target Note Selector ── */
.target-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.target-hit {
    display: none;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: #00e676;
    background: rgba(0, 230, 118, 0.12);
    border: 1px solid rgba(0, 230, 118, 0.3);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    animation: hitPulse 0.6s ease-in-out infinite;
}

.target-hit.active {
    display: inline-flex;
}

@keyframes hitPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

/* ── Stability Meter ── */
.stability-meter {
    position: relative;
    height: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.stability-meter__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-error), var(--color-warning), var(--color-success));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.stability-meter__label {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-bright);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    pointer-events: none;
}

/* ── Canvas Wrappers ── */
.pitch-timeline-wrap,
.waveform-wrap {
    width: 100%;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.pitch-timeline-wrap {
    height: 200px;
}

.waveform-wrap {
    height: 100px;
    margin-top: var(--space-sm);
}

.pitch-timeline-wrap canvas,
.waveform-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* ── Vocal Range Tracker ── */
.range-tracker {
    margin-top: var(--space-xs);
}

.range-tracker__bar {
    height: 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.range-tracker__fill {
    position: absolute;
    top: 0;
    bottom: 0;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    border-radius: var(--radius-full);
    transition: left 0.3s ease, width 0.3s ease;
    box-shadow: 0 0 8px rgba(0, 255, 65, 0.3);
}

.range-tracker__labels {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-top: 4px;
}

.range-tracker__labels span:nth-child(2) {
    color: var(--color-secondary);
}

/* ── Session Stats ── */
.session-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-xs);
}

/* ── Note Streak ── */
.streak-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
}

.streak-box__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    padding: 2px 0;
}

.streak-box__value {
    color: var(--color-primary);
    font-weight: 700;
    font-size: var(--fs-sm);
}

/* ── Hold indicator ── */
.hold-badge {
    display: none;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-secondary);
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid var(--color-secondary);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    animation: holdPulse 1.5s ease-in-out infinite;
}

.hold-badge.active {
    display: inline-flex;
}

@keyframes holdPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ── Controls Grid ── */
.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

/* ── Shared form elements ── */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(0, 255, 65, 0.5);
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(0, 255, 65, 0.5);
}

.tuning-input {
    width: 70px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-primary);
    text-align: center;
}

.tuning-input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--glow-sm);
}

/* ── Stat boxes, history, export ── */
.stat-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    text-align: center;
}

.stat-box__label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.stat-box__value {
    font-family: var(--font-display);
    font-size: var(--fs-md);
    color: var(--color-primary);
}

.history-wrap {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-top: var(--space-sm);
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
}

.history-table thead {
    position: sticky;
    top: 0;
    z-index: 1;
}

.history-table th {
    background: var(--color-surface);
    color: var(--color-secondary);
    padding: 6px var(--space-sm);
    text-align: left;
    font-weight: 600;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-border);
}

.history-table td {
    padding: 4px var(--space-sm);
    border-bottom: 1px solid rgba(15, 61, 30, 0.2);
    color: var(--color-text);
}

.export-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.btn--sm {
    padding: 6px 12px;
    font-size: var(--fs-xs);
}

/* ── Tool Grid Layout ── */
.tool-grid {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--space-md);
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .tool-grid {
        grid-template-columns: 1fr;
    }

    .note-display__note {
        font-size: 3.5rem;
    }

    .session-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .piano-keyboard {
        min-width: 500px;
        height: 80px;
    }
}

@media (max-width: 480px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }

    .piano-keyboard {
        min-width: 400px;
        height: 70px;
    }

    .ref-tone-row {
        flex-wrap: wrap;
    }
}

/* ── Privacy Callout ── */
.privacy-callout {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    background: rgba(0, 229, 255, 0.04);
    border: 1px solid rgba(0, 229, 255, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

.privacy-callout__icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.browser-badges {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-left: auto;
}

.browser-badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-secondary);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: var(--radius-sm);
    padding: 1px 6px;
}

/* ── Keyboard Hints ── */
.kbd-hints {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

.kbd-hint {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.kbd-hint kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 18px;
    padding: 0 4px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-primary);
    background: var(--color-bg);
    border: 1px solid rgba(0, 255, 65, 0.3);
    border-radius: 3px;
    box-shadow: 0 1px 0 rgba(0, 255, 65, 0.2);
}

/* ── Confidence Bar ── */
.confidence-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.confidence-track {
    flex: 1;
    height: 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.confidence-bar {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.15s ease, background 0.2s ease;
    background: var(--color-error);
}

.confidence-label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    min-width: 32px;
    text-align: right;
}

/* ── Target Hit Stats ── */
.target-hit-stats {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

/* ── Session Summary Card ── */
.session-summary {
    background: var(--color-surface);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
    animation: summaryAppear 0.4s ease;
}

@keyframes summaryAppear {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.session-summary__title {
    font-family: var(--font-display);
    font-size: var(--fs-md);
    color: var(--color-secondary);
    text-align: center;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
}

.session-summary__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.session-summary__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
}

.session-summary__label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.session-summary__value {
    font-family: var(--font-display);
    font-size: var(--fs-md);
    color: var(--color-primary);
}

@media (max-width: 600px) {
    .session-summary__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ── Voice Type Reference Grid ── */
.voice-type-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.voice-type-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: border-color 0.2s ease;
}

.voice-type-card:hover {
    border-color: var(--color-primary);
}

.voice-type-card__name {
    font-family: var(--font-display);
    font-size: var(--fs-md);
    font-weight: 700;
    margin-bottom: 4px;
}

.voice-type-card__range {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.voice-type-card__desc {
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    line-height: 1.5;
}

@media (max-width: 700px) {
    .voice-type-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .voice-type-grid {
        grid-template-columns: 1fr;
    }
}

/* ── Piano expanded: 5 octaves need smaller min-width ── */
@media (max-width: 900px) {
    .piano-keyboard {
        min-width: 700px;
    }
}