/* ============================================================
   AI Note Detection Tool — Tool Styles
   ============================================================ */

/* ── Current Note Display ── */
.current-note-display {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    position: relative;
    overflow: hidden;
}

.current-note-display::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0, 255, 65, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.current-note__name {
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 7rem);
    color: var(--color-primary);
    text-shadow: 0 0 30px rgba(0, 255, 65, 0.5);
    line-height: 1;
    letter-spacing: 0.05em;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.current-note__name--active {
    color: #00e676;
    text-shadow: 0 0 40px rgba(0, 230, 118, 0.7), 0 0 80px rgba(0, 230, 118, 0.3);
    animation: notePulse 1.2s ease-in-out infinite;
}

@keyframes notePulse {
    0%, 100% {
        text-shadow: 0 0 40px rgba(0, 230, 118, 0.7), 0 0 80px rgba(0, 230, 118, 0.3);
    }
    50% {
        text-shadow: 0 0 50px rgba(0, 230, 118, 0.9), 0 0 100px rgba(0, 230, 118, 0.4);
    }
}

.current-note__octave {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    color: var(--color-secondary);
    text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
    line-height: 1;
    margin-top: var(--space-xs);
}

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

.current-note__confidence {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-sm);
}

/* ── Confidence Bar ── */
.confidence-track {
    width: 120px;
    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-bar--high {
    background: linear-gradient(90deg, var(--color-primary), #00e676);
}

.confidence-bar--medium {
    background: var(--color-warning);
}

.confidence-bar--low {
    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;
}

/* ── Chord Display ── */
.chord-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
}

.chord-display__label {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.chord-display__name {
    font-family: var(--font-display);
    font-size: var(--fs-lg);
    color: var(--color-secondary);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
    letter-spacing: 0.03em;
}

.chord-display__name--active {
    color: #00e5ff;
    text-shadow: 0 0 16px rgba(0, 229, 255, 0.6);
}

/* ── Detected Notes List ── */
.detected-notes-wrap {
    margin-top: var(--space-sm);
}

.panel-heading {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-xs);
    padding-bottom: 4px;
    border-bottom: 1px solid var(--color-border);
}

.history-wrap {
    max-height: 220px;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-surface);
}

.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);
}

.history-table tr:hover td {
    background: rgba(0, 255, 65, 0.03);
}

/* Duration bar inside table cell */
.duration-bar {
    display: inline-block;
    height: 10px;
    min-width: 4px;
    max-width: 80px;
    background: linear-gradient(90deg, var(--color-primary), rgba(0, 255, 65, 0.3));
    border-radius: var(--radius-sm);
    vertical-align: middle;
    margin-right: 4px;
}

/* ── Canvas Wrappers ── */
.canvas-wrap {
    width: 100%;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    margin-bottom: var(--space-md);
    padding: var(--space-xs);
}

.canvas-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Piano Roll Canvas */
.piano-roll-wrap {
    height: 250px;
}

.piano-roll-wrap canvas {
    background: #0a0f0a;
}

/* Staff Notation Canvas */
.staff-wrap {
    height: 210px;
}

.staff-wrap canvas {
    background: #0d0d0d;
}

/* Spectrum Canvas */
.spectrum-wrap {
    height: 140px;
}

.spectrum-wrap canvas {
    background: #0a0a0e;
}

/* ── Note History Log ── */
.note-history-log {
    margin-bottom: var(--space-md);
}

.history-log-content {
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    background: var(--color-surface);
    line-height: 1.6;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-surface);
}

.history-log-content .log-entry {
    padding: 1px 0;
}

.history-log-content .log-note {
    color: var(--color-primary);
    font-weight: 600;
}

.history-log-content .log-chord {
    color: var(--color-secondary);
    font-weight: 600;
}

.history-log-content .log-time {
    color: var(--color-text-muted);
}

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

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

/* ── File Upload ── */
.file-upload-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.file-input {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-text);
}

.file-input::file-selector-button {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--color-primary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 4px 12px;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.file-input::file-selector-button:hover {
    border-color: var(--color-primary);
    background: rgba(0, 255, 65, 0.08);
}

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

.file-status--processing {
    color: var(--color-warning);
}

.file-status--done {
    color: var(--color-primary);
}

/* ── Tool Grid Layout ── */
.tool-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: var(--space-md);
}

/* ── 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);
}

/* ── Freeze Button Active State ── */
.btn--freeze-active {
    border-color: #00e5ff !important;
    color: #00e5ff !important;
    background: rgba(0, 229, 255, 0.1) !important;
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
}

/* ── 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);
}

/* ── How-To Steps ── */
.howto-steps {
    counter-reset: howto;
    list-style: none;
    padding: 0;
}

.howto-steps li {
    counter-increment: howto;
    position: relative;
    padding-left: 3rem;
    margin-bottom: var(--space-lg);
}

.howto-steps li::before {
    content: counter(howto);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: var(--fs-sm);
    color: var(--color-bg);
    background: var(--color-primary);
    border-radius: 50%;
    font-weight: 700;
}

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

    .current-note__name {
        font-size: 3.5rem;
    }

    .piano-roll-wrap {
        height: 200px;
    }

    .staff-wrap {
        height: 170px;
    }
}

@media (max-width: 480px) {
    .file-upload-wrap {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .chord-display {
        flex-direction: column;
        gap: 2px;
    }
}