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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: #ffffff;
    min-height: 100vh;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-btn {
    background: rgba(0, 212, 255, 0.2);
    border: 2px solid #00d4ff;
    color: #00d4ff;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.info-btn:hover {
    background: rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

.info-panel {
    display: none;
    background: rgba(26, 26, 46, 0.95);
    border: 1px solid #404040;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.info-content h3 {
    color: #00d4ff;
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.info-content p {
    line-height: 1.6;
    margin-bottom: 15px;
    color: #cccccc;
}

.info-content ul {
    list-style: none;
    padding-left: 0;
}

.info-content li {
    padding: 8px 0;
    border-left: 3px solid #00d4ff;
    padding-left: 15px;
    margin-bottom: 8px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 5px;
}

.info-content strong {
    color: #ff6b35;
}

.main-content {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.canvas-container {
    position: relative;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid #404040;
    border-radius: 15px;
    padding: 15px;
    flex: 1;
    min-width: 300px;
}

#canvas {
    border: 2px solid #00d4ff;
    border-radius: 10px;
    cursor: crosshair;
    background: #1a1a2e;
    width: 100%;
    height: auto;
    max-width: 800px;
    aspect-ratio: 4/3;
}

.touch-counter {
    position: absolute;
    top: 25px;
    right: 25px;
    background: rgba(0, 212, 255, 0.2);
    border: 1px solid #00d4ff;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 600;
    color: #00d4ff;
}

.controls-panel {
    width: 300px;
    background: rgba(26, 26, 46, 0.8);
    border: 1px solid #404040;
    border-radius: 15px;
    padding: 25px;
    height: fit-content;
    backdrop-filter: blur(10px);
}

.control-group {
    margin-bottom: 25px;
}

.control-group h4 {
    color: #ff6b35;
    margin-bottom: 15px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-group label {
    display: block;
    margin-bottom: 12px;
    color: #cccccc;
    cursor: pointer;
    font-size: 0.95rem;
}

.control-group input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.2);
    accent-color: #00d4ff;
}

.control-group input[type="range"] {
    width: 100%;
    margin-top: 8px;
    accent-color: #00d4ff;
}

.demo-btn {
    display: block;
    width: 100%;
    margin-bottom: 10px;
    padding: 12px;
    background: rgba(255, 107, 53, 0.2);
    border: 2px solid #ff6b35;
    color: #ff6b35;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.demo-btn:hover {
    background: rgba(255, 107, 53, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.demo-btn.reset {
    background: rgba(200, 200, 200, 0.2);
    border-color: #cccccc;
    color: #cccccc;
}

.demo-btn.reset:hover {
    background: rgba(200, 200, 200, 0.3);
    box-shadow: 0 5px 15px rgba(200, 200, 200, 0.3);
}

.touch-data {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid #404040;
    border-radius: 10px;
    padding: 15px;
}

.touch-data h4 {
    color: #00d4ff;
    margin-bottom: 15px;
    font-size: 1rem;
}

.data-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.data-display div {
    background: rgba(0, 212, 255, 0.1);
    padding: 8px;
    border-radius: 5px;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.data-display span {
    color: #00d4ff;
    font-weight: bold;
}

.footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    border-top: 1px solid #404040;
    color: #888888;
}

.footer a {
    color: #00d4ff;
    text-decoration: none;
    font-weight: 600;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .main-content {
        flex-direction: column;
    }
    
    .controls-panel {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .app-container {
        padding: 15px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .header {
        text-align: center;
    }
    
    .control-group {
        margin-bottom: 20px;
    }
    
    #canvas {
        height: 400px;
    }
    
    .data-display {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.6rem;
    }
    
    .info-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    #canvas {
        height: 300px;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(64, 64, 64, 0.3);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 212, 255, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 212, 255, 0.7);
}

/* Glow effects */
.demo-btn:focus,
.info-btn:focus {
    outline: none;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

input[type="range"]:focus {
    outline: none;
}

/* Animation for welcome */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.canvas-container:hover {
    animation: pulse 2s infinite;
}