/* Retro Windows 95/98 Piano Tuner - Funky Colors Edition */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'MS Sans Serif', Arial, sans-serif;
    background-color: #c0c0c0;
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 2px,
            rgba(255, 0, 255, 0.02) 2px,
            rgba(255, 0, 255, 0.02) 4px
        );
    color: #000;
    line-height: 1.4;
    min-height: 100vh;
    padding: 10px;
}

.container {
    max-width: 700px;
    margin: 0 auto;
    background-color: #c0c0c0;
    border: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    box-shadow: inset 1px 1px 0 #ffffff, inset -1px -1px 0 #000;
    overflow: hidden;
}

/* Header */
header {
    background: linear-gradient(90deg, #ff00ff 0%, #00ffff 25%, #ffff00 50%, #ff00ff 75%, #00ffff 100%);
    padding: 2px;
    box-shadow: inset 0 1px 0 #fff, inset 0 -2px 0 #000;
}

header::before {
    content: '';
    display: block;
    height: 20px;
    background: linear-gradient(90deg, #ff00ff 0%, #00ffff 25%, #ffff00 50%, #ff00ff 75%, #00ffff 100%);
}

header h1 {
    font-size: 1.1em;
    margin: 2px;
    color: #ffffff;
    font-weight: bold;
    letter-spacing: 0;
    text-shadow: 2px 2px 0 #000, -1px -1px 0 #00ffff, 2px -2px 0 #ff00ff;
}

.subtitle {
    color: #000;
    font-size: 0.85em;
    margin: 2px;
    font-weight: bold;
    text-shadow: 1px 1px 0 #ffff00;
}

/* Main Content */
main {
    padding: 10px;
}

/* Sections */
section {
    margin-bottom: 10px;
    padding: 6px;
    background-color: #c0c0c0;
    border: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
}

.section-title {
    background: linear-gradient(90deg, #ff0080 0%, #ff6600 50%, #00ff80 100%);
    color: #000;
    padding: 2px 4px;
    font-weight: bold;
    font-size: 0.9em;
    margin-bottom: 8px;
    text-shadow: 1px 1px 0 #ffff00;
}

/* Controls Section */
.controls-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn {
    padding: 4px 12px;
    font-size: 0.85em;
    border: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    background-color: #c0c0c0;
    color: #000;
    font-family: 'MS Sans Serif', Arial, sans-serif;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    min-width: 80px;
    transition: all 0.05s ease;
}

.btn:active {
    border-color: #808080 #dfdfdf #dfdfdf #808080;
    box-shadow: inset 1px 1px 0 #ffffff, inset -1px -1px 0 #000;
}

.btn:disabled {
    color: #818081;
    text-shadow: 1px 1px 0 #ffffff;
    cursor: not-allowed;
}

.btn-primary {
    min-width: 100px;
}

.btn-secondary {
    min-width: 100px;
}

/* Control Groups */
.reference-control,
.stretch-control {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 4px;
    border: 1px solid #dfdfdf;
}

.reference-control label,
.stretch-control label {
    font-size: 0.9em;
    color: #000;
    font-weight: normal;
}

.reference-control label span,
.stretch-control label span {
    font-weight: bold;
    margin-left: 4px;
}

input[type="range"] {
    width: 100%;
    height: 4px;
    border: 2px solid;
    border-color: #808080 #dfdfdf #dfdfdf #808080;
    background: #c0c0c0;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    background-color: #c0c0c0;
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    background-color: #c0c0c0;
    cursor: pointer;
}

/* Stretch Tuning Visualization */
.stretch-info {
    margin-top: 8px;
}

.stretch-indicator {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 6px;
    border: 1px solid #dfdfdf;
}

.stretch-scale {
    display: flex;
    justify-content: space-between;
    font-size: 0.7em;
    font-weight: bold;
    color: #000;
}

.scale-label {
    flex: 1;
    text-align: center;
}

.stretch-gradient {
    position: relative;
    height: 24px;
    background: linear-gradient(90deg, 
        #0080ff 0%, 
        #00ff00 33%, 
        #ffff00 50%, 
        #ff8800 66%, 
        #ff0000 100%
    );
    border: 2px inset #808080;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    overflow: hidden;
}

.stretch-pointer {
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: #000;
    box-shadow: 0 0 0 2px #fff, 0 0 0 3px #000;
    transition: left 0.15s ease;
}

.stretch-description {
    text-align: center;
    font-size: 0.75em;
    color: #000;
    margin-top: 4px;
}

.stretch-description small {
    display: block;
    font-weight: bold;
    color: #ff0080;
}

/* Display Section */
.display-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.frequency-display,
.note-display,
.cents-display {
    background-color: #c0c0c0;
    padding: 6px;
    border: 2px solid;
    border-color: #808080 #dfdfdf #dfdfdf #808080;
    text-align: center;
}

.label {
    font-size: 0.85em;
    color: #000;
    text-transform: uppercase;
    margin-bottom: 4px;
    font-weight: bold;
}

.value {
    font-size: 1.8em;
    font-weight: bold;
    color: #000;
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    padding: 4px;
    background-color: #c0c0c0;
    border: 1px solid;
    border-color: #808080 #dfdfdf #dfdfdf #808080;
}

/* Cents Meter */
.cents-meter {
    margin-top: 8px;
}

.meter-background {
    position: relative;
    height: 40px;
    background-color: #c0c0c0;
    border: 2px solid;
    border-color: #808080 #dfdfdf #dfdfdf #808080;
    overflow: hidden;
}

.meter-scale {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 4px;
    font-size: 0.75em;
    color: #000;
}

.meter-scale span {
    flex: 1;
    text-align: center;
    font-weight: bold;
}

.meter-needle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background: #000080;
    transform: translateX(-50%);
    transition: left 0.1s ease;
}

/* Status Section */
.status-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.status-light {
    width: 10px;
    height: 10px;
    border: 1px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    display: inline-block;
    transition: all 0.2s ease;
}

.status-light.active {
    background: #00ff00;
}

.status-light.inactive {
    background: #c0c0c0;
}

.signal-strength {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
}

.signal-bar {
    flex: 1;
    height: 16px;
    background: #c0c0c0;
    border: 2px solid;
    border-color: #808080 #dfdfdf #dfdfdf #808080;
    overflow: hidden;
}

.signal-fill {
    height: 100%;
    width: 0%;
    background: #00ff00;
    transition: width 0.1s ease;
}

/* Tuning Progress Section */
.tuning-progress-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.piano-tracker {
    background-color: #c0c0c0;
    padding: 6px;
    border: 2px solid;
    border-color: #808080 #dfdfdf #dfdfdf #808080;
}

.piano-notes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(54px, 1fr));
    gap: 6px;
    padding: 4px;
}

.note-tracker {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    border: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
    background-color: #c0c0c0;
    font-size: 0.7em;
    font-weight: bold;
    cursor: default;
    position: relative;
    transition: all 0.2s ease;
    min-width: 50px;
}

.note-tracker span {
    text-align: center;
    color: #000;
    z-index: 2;
    font-weight: bold;
}

.note-tracker.not-started {
    background-color: #c0c0c0;
    color: #808080;
}

.note-tracker.tuned {
    background: linear-gradient(135deg, #00ff00, #00cc00);
    color: #000;
    box-shadow: inset 0 0 4px #ffff00, 0 0 8px #00ff00;
}

.note-tracker.close {
    background: linear-gradient(135deg, #ffff00, #ffcc00);
    color: #000;
    box-shadow: inset 0 0 4px #ff8800;
}

.note-tracker.off {
    background: linear-gradient(135deg, #ff6600, #ff4400);
    color: #fff;
    box-shadow: inset 0 0 4px #000;
}

.note-tracker.very-off {
    background: linear-gradient(135deg, #cc0000, #990000);
    color: #fff;
    box-shadow: inset 0 0 4px #ff00ff, 0 0 8px #cc0000;
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 6px;
    font-size: 0.8em;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: bold;
    color: #000;
}

.legend-dot {
    width: 16px;
    height: 16px;
    border: 1px solid #000;
    display: inline-block;
}

/* Info Section */
.info-section h3 {
    color: #000;
    margin-bottom: 6px;
    font-size: 0.95em;
    font-weight: bold;
    border-bottom: 1px solid #dfdfdf;
    padding-bottom: 4px;
}

.info-section ul {
    list-style: none;
    padding-left: 0;
}

.info-section li {
    padding: 3px 0;
    padding-left: 18px;
    position: relative;
    color: #000;
    font-size: 0.85em;
}

.info-section li:before {
    content: "•";
    position: absolute;
    left: 6px;
    color: #000;
    font-weight: bold;
}

/* Footer */
footer {
    background-color: #c0c0c0;
    padding: 6px;
    text-align: center;
    color: #000;
    font-size: 0.8em;
    border-top: 2px solid;
    border-color: #dfdfdf #808080 #808080 #dfdfdf;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        margin: 0;
        border: none;
    }

    main {
        padding: 8px;
    }

    header h1 {
        font-size: 1em;
    }

    .value {
        font-size: 1.4em;
    }

    .display-section {
        flex-direction: column;
    }

    .status-section {
        flex-direction: column;
        gap: 6px;
    }

    .signal-strength {
        width: 100%;
    }

    .signal-bar {
        flex: 1;
        max-width: none;
    }
}