* {
    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;
    overflow-x: hidden;
}

.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: block;
}

/* Screen 1: Selection Screen */
#selectionScreen {
    padding: 20px;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
    padding: 20px;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    font-size: 1.2em;
    opacity: 0.9;
}

.website-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.website-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.website-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.website-card .icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.website-card h3 {
    font-size: 1.5em;
    color: #333;
    margin-bottom: 10px;
}

.website-card p {
    color: #666;
    font-size: 0.9em;
}

/* Screen 2: WebView Screen */
#webviewScreen {
    background: #f5f5f5;
}

.webview-header {
    background: white;
    padding: 15px 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
}

.back-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.3s ease;
}

.back-btn:hover {
    background: #5568d3;
}

.site-info {
    flex: 1;
}

#siteName {
    font-size: 1.2em;
    font-weight: 600;
    color: #333;
}

.iframe-container {
    width: 100%;
    height: calc(100vh - 70px);
    background: white;
}

#webviewFrame {
    width: 100%;
    height: 100%;
    border: none;
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2em;
    }

    .website-grid {
        grid-template-columns: 1fr;
        padding: 10px;
    }

    .website-card {
        padding: 20px;
    }
}