/* ============================================================
   Music Note Detector — Tool-Specific Styles
   ============================================================ */

/* ── Giant Note Display Area ── */
.giant-note-area {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-md);
    position: relative;
}

.giant-note {
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 900;
    color: var(--color-primary);
    text-shadow:
        0 0 20px rgba(0, 255, 65, 0.5),
        0 0 40px rgba(0, 255, 65, 0.25),
        0 0 80px rgba(0, 255, 65, 0.1);
    line-height: 1;
    letter-spacing: 0.05em;
    transition: color 0.2s ease, text-shadow 0.2s ease;
    user-select: none;
    min-height: 1.1em;
}

.giant-note--intune {
    color: #00e676;
    text-shadow:
        0 0 30px rgba(0, 230, 118, 0.6),
        0 0 60px rgba(0, 230, 118, 0.3),
        0 0 100px rgba(0, 230, 118, 0.15);
    animation: giantPulse 1.5s ease-in-out infinite;
}

.giant-note--close {
    color: var(--color-warning);
    text-shadow:
        0 0 20px rgba(255, 179, 0, 0.5),
        0 0 40px rgba(255, 179, 0, 0.2);
}

.giant-note--off {
    color: var(--color-error);
    text-shadow:
        0 0 20px rgba(255, 23, 68, 0.5),
        0 0 40px rgba(255, 23, 68, 0.2);
}

.giant-note--frozen {
    color: var(--color-secondary);
    text-shadow:
        0 0 20px rgba(0, 229, 255, 0.5),
        0 0 40px rgba(0, 229, 255, 0.2);
    animation: frozenPulse 2s ease-in-out infinite;
}

@keyframes giantPulse {
    0%, 100% {
        text-shadow:
            0 0 30px rgba(0, 230, 118, 0.6),
            0 0 60px rgba(0, 230, 118, 0.3),
            0 0 100px rgba(0, 230, 118, 0.15);
    }
    50% {
        text-shadow:
            0 0 40px rgba(0, 230, 118, 0.8),
            0 0 80px rgba(0, 230, 118, 0.4),
            0 0 120px rgba(0, 230, 118, 0.2);
    }
}

@keyframes frozenPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.giant-note__hz {
    font-family: var(--font-mono);
    font-size: var(--fs-md);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* ── Cents Deviation Bar ── */
.cents-bar {
    margin-bottom: var(--space-sm);
}

.cents-bar__track {
    position: relative;
    height: 28px;
    background: linear-gradient(
        90deg,
        rgba(255, 23, 68, 0.15) 0%,
        rgba(255, 179, 0, 0.15) 25%,
        rgba(0, 230, 118, 0.15) 40%,
        rgba(0, 230, 118, 0.2) 50%,
        rgba(0, 230, 118, 0.15) 60%,
        rgba(255, 179, 0, 0.15) 75%,
        rgba(255, 23, 68, 0.15) 100%
    );
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.cents-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);
}

.cents-bar__needle {
    position: absolute;
    top: 3px;
    bottom: 3px;
    width: 12px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    transition: left 0.1s ease, background 0.2s ease, box-shadow 0.2s ease;
    transform: translateX(-50%);
    z-index: 3;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.6);
}

.cents-bar__needle--intune {
    background: #00e676;
    box-shadow: 0 0 12px rgba(0, 230, 118, 0.7);
}

.cents-bar__needle--sharp {
    background: var(--color-warning);
    box-shadow: 0 0 10px rgba(255, 179, 0, 0.6);
}

.cents-bar__needle--flat {
    background: var(--color-error);
    box-shadow: 0 0 10px rgba(255, 23, 68, 0.6);
}

.cents-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: 110px;
    min-width: 500px;
    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);
}

/* ── Note History Badges ── */
.note-history {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-height: 36px;
    padding: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.note-history__empty {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
}

.note-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid;
    animation: badgeAppear 0.2s ease;
    white-space: nowrap;
}

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

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

.note-badge--off {
    color: var(--color-error);
    background: rgba(255, 23, 68, 0.1);
    border-color: rgba(255, 23, 68, 0.3);
}

@keyframes badgeAppear {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

/* ── File Upload Zone ── */
.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg) var(--space-md);
    background: var(--color-surface);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
    text-align: center;
}

.upload-zone:hover,
.upload-zone--dragover {
    border-color: var(--color-primary);
    background: rgba(0, 255, 65, 0.03);
}

.upload-zone__icon {
    font-size: 2rem;
    margin-bottom: var(--space-xs);
}

.upload-zone__text {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-text);
    margin-bottom: 4px;
}

.upload-zone__formats {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

.file-result {
    margin-top: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--color-text);
}

.file-result__note {
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 900;
    color: var(--color-primary);
    text-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
    text-align: center;
    margin-bottom: var(--space-xs);
}

.file-result__details {
    text-align: center;
    color: var(--color-text-muted);
}

/* ── 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;
}

/* ── 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);
}

/* ── Session Stats ── */
.session-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.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);
}

/* ── Export Actions ── */
.export-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

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

/* ── 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);
}

/* ── 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);
}

/* ── Responsive: 991px ── */
@media (max-width: 991px) {
    .giant-note {
        font-size: clamp(3.5rem, 10vw, 8rem);
    }

    .piano-keyboard {
        min-width: 450px;
        height: 100px;
    }
}

/* ── Responsive: 767px ── */
@media (max-width: 767px) {
    .giant-note {
        font-size: clamp(3rem, 12vw, 6rem);
    }

    .session-stats {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .piano-keyboard {
        min-width: 400px;
        height: 90px;
    }
}

/* ── Responsive: 479px ── */
@media (max-width: 479px) {
    .giant-note {
        font-size: clamp(2.5rem, 14vw, 5rem);
    }

    .session-stats {
        grid-template-columns: 1fr;
    }

    .piano-keyboard {
        min-width: 350px;
        height: 80px;
    }

    .cents-bar__track {
        height: 22px;
    }

    .note-history {
        max-height: 120px;
        overflow-y: auto;
    }

    .upload-zone {
        padding: var(--space-md) var(--space-sm);
    }

    .export-actions {
        flex-direction: column;
    }
}