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

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

.container {
    width: 100%;
    max-width: 1200px;
    background: #1e1e1e;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    text-align: center;
}

.header h1 {
    font-size: 2em;
    margin-bottom: 5px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 0.9em;
    opacity: 0.9;
    margin-bottom: 5px;
}

.info {
    font-size: 0.8em;
    opacity: 0.8;
    font-style: italic;
}

#terminal-container {
    flex: 1;
    padding: 20px;
    background: #1e1e1e;
    min-height: 500px;
}

#terminal-container .xterm {
    height: 100%;
}

#terminal-container .xterm-viewport {
    background-color: #1e1e1e !important;
}

#terminal-container .xterm-screen {
    background-color: #1e1e1e !important;
}

.footer {
    background: #2d2d2d;
    color: #aaa;
    padding: 15px 30px;
    text-align: center;
    font-size: 0.85em;
}

.footer p {
    margin: 5px 0;
}

.hint {
    color: #667eea;
    font-style: italic;
    margin-top: 10px;
}

/* Terminal scrollbar styling */
.xterm-viewport::-webkit-scrollbar {
    width: 10px;
}

.xterm-viewport::-webkit-scrollbar-track {
    background: #1e1e1e;
}

.xterm-viewport::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 5px;
}

.xterm-viewport::-webkit-scrollbar-thumb:hover {
    background: #777;
}

/* Responsive design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.5em;
    }
    
    #terminal-container {
        min-height: 400px;
        padding: 10px;
    }
}