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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 600px;
    width: 100%;
    animation: fadeIn 0.5s ease-in;
}

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

h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 2.5em;
    text-align: center;
}

.subtitle {
    color: #666;
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.1em;
}

.info-box {
    background: #f7f7f7;
    border-left: 4px solid #667eea;
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.info-box h3 {
    color: #667eea;
    margin-bottom: 10px;
}

.info-box p {
    color: #555;
    line-height: 1.6;
}

.stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin: 30px 0;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
    cursor: default;
}

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

.stat-card .number {
    font-size: 2em;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-card .label {
    font-size: 0.9em;
    opacity: 0.9;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    flex-wrap: wrap;
}

button {
    flex: 1;
    min-width: 120px;
    background: #667eea;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

button:hover {
    background: #764ba2;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.api-result {
    margin-top: 20px;
    padding: 15px;
    background: #e8f5e9;
    border-radius: 8px;
    display: none;
    animation: slideIn 0.3s ease;
    max-height: 300px;
    overflow-y: auto;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.api-result.show {
    display: block;
}

.api-result.error {
    background: #ffebee;
}

.api-result pre {
    background: #fff;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 0.9em;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.footer {
    margin-top: 30px;
    text-align: center;
    color: #999;
    font-size: 0.9em;
}

.badge {
    display: inline-block;
    background: #4caf50;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    margin-top: 10px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    button {
        width: 100%;
    }
}