* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: #f5f5f5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    max-width: 800px;
    width: 90%;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease-in;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: 600;
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

#searchInput {
    flex: 1;
    padding: 15px;
    font-size: 16px;
    border: 2px solid #ddd;
    border-radius: 8px;
    transition: all 0.3s ease;
}

#searchInput:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.3);
}

#searchBtn {
    padding: 15px 30px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

#searchBtn:hover {
    background-color: #45a049;
    transform: translateY(-2px);
}

#searchBtn:active {
    transform: translateY(0);
}

.result-container {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 8px;
    background: #fafafa;
}

#wordResult {
    margin-bottom: 15px;
    padding: 15px;
    border-radius: 8px;
    background: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    animation: slideDown 0.3s ease-out;
}

#suggestions {
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.suggestion-item {
    cursor: pointer;
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
    transition: all 0.2s ease;
    animation: fadeIn 0.3s ease-out;
}

.suggestion-item:hover {
    background-color: #f0f0f0;
    transform: translateX(5px);
}

/* 动画关键帧 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 600px) {
    .container {
        width: 95%;
        padding: 1rem;
    }

    .search-box {
        flex-direction: column;
    }

    #searchBtn {
        width: 100%;
    }

    h1 {
        font-size: 2rem;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-radius: 50%;
    border-top: 3px solid #4CAF50;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.search-info {
    margin-top: 10px;
    font-size: 14px;
    color: #666;
}