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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    padding: 20px;
    background: #f0f2f5;
    min-height: 100vh;
    color: #1a1a1a;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    background-color: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

h1 {
    text-align: center;
    margin-bottom: 40px;
    color: #1a1a1a;
    font-size: 2.2em;
    font-weight: 600;
}

h2 {
    margin-bottom: 25px;
    color: #1a1a1a;
    font-size: 1.5em;
    font-weight: 500;
}

.content {
    display: flex;
    gap: 40px;
}

.model-list, .ratio-display {
    flex: 1;
    padding: 30px;
    background-color: #fff;
    border-radius: 16px;
    border: 1px solid #eaeaea;
    transition: all 0.3s ease;
}

.model-list:hover, .ratio-display:hover {
    border-color: #e0e0e0;
}

.model-item {
    background-color: #fff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 12px;
    border: 1px solid #eaeaea;
    display: flex;
    gap: 15px;
    align-items: center;
    transition: all 0.3s ease;
}

.model-item:hover {
    border-color: #4CAF50;
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.1);
}

.model-item .input-group {
    flex: 1;
    min-width: 0;
}

.model-item input, 
.model-item select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    color: #1a1a1a;
    background: #fff;
    transition: all 0.3s ease;
}

.model-item input:hover,
.model-item select:hover {
    border-color: #4CAF50;
}

.model-item input:focus,
.model-item select:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.model-item label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
    font-weight: 500;
}

.btn-add {
    width: 100%;
    padding: 12px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-add:hover {
    background: #43a047;
    transform: translateY(-1px);
}

.btn-remove {
    padding: 8px 16px;
    background: #fff;
    color: #dc3545;
    border: 1px solid #dc3545;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    height: fit-content;
    align-self: center;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
}

.btn-remove:hover {
    background: #dc3545;
    color: #fff;
}

.ratio-item {
    background-color: #fff;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.ratio-item h3 {
    margin-bottom: 10px;
    color: #333;
}

.ratio-value {
    font-size: 16px;
    margin: 5px 0;
}

.ratio-block {
    background-color: #fff;
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 12px;
    border: 1px solid #eaeaea;
    transition: all 0.3s ease;
}

.ratio-block:hover {
    border-color: #4CAF50;
}

.ratio-block h3 {
    margin-bottom: 20px;
    color: #1a1a1a;
    font-size: 1.2em;
    font-weight: 500;
}

.ratio-content {
    position: relative;
}

.ratio-text {
    width: 100%;
    font-family: 'Fira Code', monospace;
    white-space: pre;
    background-color: #f8f9fa;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #eaeaea;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    margin: 0;
    transition: all 0.3s ease;
}

.ratio-text:hover {
    border-color: #4CAF50;
}

.copy-btn {
    position: absolute;
    right: 8px;
    top: 8px;
    background: #fff;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    padding: 6px;
    color: #666;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.copy-btn:hover {
    color: #4CAF50;
    border-color: #4CAF50;
}

.tooltip-icon {
    display: inline-flex;
    align-items: center;
    color: #666;
    cursor: help;
    margin-left: 4px;
    position: relative;
    vertical-align: middle;
}

.tooltip-icon svg {
    width: 14px;
    height: 14px;
    transition: all 0.2s ease;
}

.tooltip-icon:hover {
    color: #4CAF50;
}

.tooltip-icon:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 100%;
    margin-bottom: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 1000;
}

.tooltip-icon:hover::before {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 100%;
    border: 4px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
    margin-bottom: 0;
    z-index: 1000;
}

@media (max-width: 1200px) {
    .container {
        margin: 10px;
        padding: 30px;
    }
    
    .content {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        margin: 0;
        padding: 20px;
    }
    
    .content {
        flex-direction: column;
        gap: 20px;
    }
    
    .model-list, .ratio-display {
        padding: 20px;
    }
    
    .model-item {
        flex-direction: column;
        padding: 15px;
        gap: 12px;
    }
    
    .btn-remove {
        width: 100%;
        justify-content: center;
    }
}