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

body {
    font-family: 'Arial', sans-serif;
    background: #f0f2f5;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

h1 {
    color: #1a73e8;
    margin-bottom: 1.5rem;
    text-align: center;
}

.search-box {
    position: relative;
}

#searchInput {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid #dfe1e5;
    border-radius: 24px;
    font-size: 16px;
    margin-bottom: 1rem;
}

#searchInput:focus {
    outline: none;
    border-color: #1a73e8;
}

#results {
    border-top: 1px solid #eee;
    padding-top: 1rem;
}

.keyword-item {
    padding: 1rem;
    margin: 0.5rem 0;
    background: #f8f9fa;
    border-radius: 8px;
    transition: transform 0.2s;
}

.keyword-item:hover {
    transform: translateX(5px);
    background: #e3f2fd;
}

.keyword-text {
    font-weight: bold;
    color: #1a73e8;
}

.metrics {
    margin-top: 0.5rem;
    font-size: 0.9em;
    color: #5f6368;
}

.metrics span {
    margin-right: 1rem;
}

.difficulty-low {
    color: #4CAF50;
}

.difficulty-medium {
    color: #FFC107;
}

.difficulty-high {
    color: #F44336;
}

.keyword-metric {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    background-color: #f0f0f0;
    margin-right: 8px;
}