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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f9;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0 40px;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

main {
    padding: 40px 0;
}

section {
    margin-bottom: 60px;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #333;
}

section h3 {
    font-size: 1.5rem;
    margin: 20px 0 10px;
    color: #667eea;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.feature {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.api-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.api-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #667eea;
}

.api-card h3 {
    margin-top: 0;
    color: #667eea;
}

.api-card .api-path {
    background: #f0f0f0;
    padding: 8px 12px;
    border-radius: 5px;
    font-family: 'Courier New', Courier, monospace;
    margin: 10px 0;
    font-size: 0.9rem;
}

.api-card .api-method {
    display: inline-block;
    padding: 4px 8px;
    background: #4caf50;
    color: white;
    border-radius: 3px;
    font-size: 0.8rem;
    margin-right: 10px;
}

.usage-guide {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

pre {
    background: #f5f5f5;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 15px 0;
    border-left: 4px solid #667eea;
}

code {
    font-family: 'Courier New', Courier, monospace;
}

.test-form {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

#test-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#test-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.response-section {
    margin-top: 30px;
}

#response-output {
    background: #f5f5f5;
    padding: 20px;
    border-radius: 8px;
    min-height: 100px;
    overflow-x: auto;
    white-space: pre-wrap;
    font-family: 'Courier New', Courier, monospace;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 60px;
}

footer p {
    margin: 0;
    opacity: 0.8;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    section h2 {
        font-size: 2rem;
    }
    
    .api-list {
        grid-template-columns: 1fr;
    }
    
    nav {
        gap: 10px;
    }
    
    nav a {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}