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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2em;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.9;
}

main {
    padding: 30px;
}

.content-section {
    margin-bottom: 30px;
}

.card {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid #f5576c;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.card h2 {
    color: #f5576c;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.card h3 {
    color: #f5576c;
    margin-bottom: 10px;
    font-size: 1.3em;
}

.card p {
    margin-bottom: 10px;
    font-size: 1.05em;
}

.card ul {
    margin-left: 20px;
    margin-top: 10px;
}

.card li {
    margin-bottom: 8px;
    font-size: 1.05em;
}

.expanded-card {
    background: #fff3cd;
    border-left-color: #ffc107;
    animation: slideDown 0.3s ease-out;
}

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

.button-container {
    text-align: center;
    margin: 30px 0;
}

.toggle-button {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2em;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.3);
}

.toggle-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.4);
}

.toggle-button:active {
    transform: translateY(0);
}

.toggle-button.expanded {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.expandable-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out;
}

.expandable-content.expanded {
    max-height: 2000px;
    transition: max-height 0.5s ease-in;
}

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

.info-card {
    background: #e7f3ff;
    border-left-color: #2196F3;
}

.info-card p {
    margin-bottom: 8px;
}

.info-card span {
    font-weight: bold;
    color: #2196F3;
}

footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    color: #666;
    border-top: 1px solid #e0e0e0;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.5em;
    }

    main {
        padding: 20px;
    }

    .toggle-button {
        padding: 12px 30px;
        font-size: 1em;
    }
}