style.css

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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #ffb3d9, #ff99cc, #ffccdd);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(255, 105, 180, 0.3);
    padding: 30px;
    border: 3px solid #ff69b4;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.neko-ears {
    font-size: 2em;
    margin-bottom: 10px;
    animation: wiggle 2s infinite;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

.title {
    color: #ff1493;
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(255, 105, 180, 0.5);
}

.subtitle {
    color: #d63384;
    font-size: 1.1em;
    font-style: italic;
}

.upload-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.upload-group {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.upload-box {
    width: 100%;
    height: 120px;
    border: 3px dashed #ff69b4;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(45deg, #fff0f5, #ffe4e6);
}

.upload-box:hover {
    border-color: #ff1493;
    background: linear-gradient(45deg, #ffe4e6, #ffb3d9);
    transform: translateY(-2px);
}

.upload-icon {
    font-size: 2em;
    margin-bottom: 5px;
}

.upload-text {
    color: #d63384;
    font-weight: bold;
}

.file-name {
    margin-top: 10px;
    color: #ff1493;
    font-size: 0.9em;
    text-align: center;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.settings-section {
    background: #fff0f5;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 30px;
    border: 2px solid #ffb3d9;
}

.settings-section h3 {
    color: #d63384;
    margin-bottom: 20px;
    text-align: center;
}

.setting-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.setting-group label {
    color: #d63384;
    font-weight: bold;
    flex: 1;
}

.pink-select, .pink-input {
    flex: 1;
    margin-left: 15px;
    padding: 8px 12px;
    border: 2px solid #ff69b4;
    border-radius: 10px;
    background: white;
    color: #d63384;
    font-size: 1em;
}

.pink-select:focus, .pink-input:focus {
    outline: none;
    border-color: #ff1493;
    box-shadow: 0 0 5px rgba(255, 20, 147, 0.3);
}

.analyze-button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(45deg, #ff69b4, #ff1493);
    color: white;
    border: none;
    border-radius: 15px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.analyze-button:hover:not(:disabled) {
    background: linear-gradient(45deg, #ff1493, #dc143c);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 20, 147, 0.4);
}

.analyze-button:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

.neko-icon {
    font-size: 1.1em;
}

.loading {
    text-align: center;
    margin: 30px 0;
}

.neko-loading {
    font-size: 3em;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.results {
    margin-top: 30px;
    padding: 20px;
    background: #fff0f5;
    border-radius: 15px;
    border: 2px solid #ffb3d9;
}

.results h3 {
    color: #d63384;
    margin-bottom: 20px;
    text-align: center;
}

.duration-info {
    background: white;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    color: #d63384;
    font-weight: bold;
    border: 1px solid #ff69b4;
}

.timeline {
    background: white;
    border: 2px solid #ff69b4;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    min-height: 100px;
    position: relative;
}

.timeline-bar {
    height: 40px;
    background: linear-gradient(to right, #ffb3d9, #ff99cc);
    border-radius: 20px;
    position: relative;
    margin: 20px 0;
}

.marker {
    position: absolute;
    top: -10px;
    font-size: 1.5em;
    transform: translateX(-50%);
}

.marker.rhythm-good { color: #00ff00; }
.marker.rhythm-bad { color: #ff0000; }
.marker.pitch-good { color: #00ff00; }
.marker.pitch-bad { color: #ff0000; }

.advice {
    background: white;
    padding: 20px;
    border-radius: 10px;
    border: 2px solid #ff69b4;
}

.advice h4 {
    color: #d63384;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.advice-item {
    background: #fff0f5;
    padding: 10px;
    margin: 10px 0;
    border-radius: 8px;
    border-left: 4px solid #ff69b4;
}

.documentation-section {
    background: linear-gradient(135deg, #fff0f8, #ffe6f2);
    border: 2px solid #ff69b4;
    border-radius: 15px;
    padding: 20px;
    margin: 20px 0;
}

.documentation-section h3 {
    color: #d63384;
    margin-bottom: 15px;
    text-align: center;
}

.doc-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.documentation-section:hover .doc-content {
    max-height: 500px;
}

.doc-step {
    display: flex;
    align-items: flex-start;
    margin: 15px 0;
    padding: 10px;
    background: white;
    border-radius: 10px;
    border-left: 4px solid #ff69b4;
}

.step-number {
    background: #ff69b4;
    color: white;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 15px;
    flex-shrink: 0;
}

.doc-step ul {
    margin: 5px 0;
    padding-left: 20px;
}

.doc-step li {
    margin: 5px 0;
}

.legend {
    margin-top: 10px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    margin: 8px 0;
    gap: 10px;
}

.marker-example {
    font-size: 1.2em;
    padding: 2px 6px;
    border-radius: 4px;
    background: white;
    border: 1px solid #ddd;
}

.marker-example.rhythm-good { color: #00ff00; }
.marker-example.rhythm-bad { color: #ff0000; }
.marker-example.pitch-good { 
    color: #00aa00; 
    font-weight: bold;
}
.marker-example.pitch-bad { 
    color: #aa0000; 
    font-weight: bold;
}

.hidden {
    display: none;
}

@media (max-width: 600px) {
    .upload-section {
        grid-template-columns: 1fr;
    }
    
    .setting-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .setting-group label {
        margin-bottom: 5px;
    }
    
    .pink-select, .pink-input {
        margin-left: 0;
    }
}