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

body {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #ffffff;
    min-height: 100vh;
}

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

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(45deg, #00d4ff, #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

header p {
    color: #888;
    font-size: 1.1rem;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 30px;
    align-items: start;
}

.canvas-container {
    position: relative;
    background: #000;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
    border: 2px solid #333;
}

#canvas {
    width: 100%;
    height: auto;
    border-radius: 10px;
    cursor: crosshair;
    background: #1a1a1a;
    display: block;
}

.canvas-overlay {
    position: absolute;
    top: 30px;
    left: 30px;
    background: rgba(0, 0, 0, 0.8);
    padding: 10px 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid #333;
}

.canvas-overlay div {
    margin: 5px 0;
    font-size: 0.9rem;
    color: #00d4ff;
}

.controls-panel {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid #333;
    height: fit-content;
}

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

.control-section h3 {
    color: #00d4ff;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.control-group {
    margin-bottom: 15px;
}

.control-group label {
    display: block;
    margin-bottom: 5px;
    color: #ccc;
    font-size: 0.9rem;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    background: #333;
    border-radius: 3px;
    outline: none;
    margin-bottom: 5px;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: #00d4ff;
    border-radius: 50%;
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #00d4ff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

select {
    width: 100%;
    padding: 8px;
    background: #333;
    color: #fff;
    border: 1px solid #555;
    border-radius: 5px;
    outline: none;
}

select:focus {
    border-color: #00d4ff;
}

.test-btn, .info-btn {
    background: linear-gradient(45deg, #00d4ff, #0099cc);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    margin: 5px 5px 5px 0;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

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

.test-btn:active, .info-btn:active {
    transform: translateY(0);
}

.info-section {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid #333;
}

.info-section h3 {
    color: #ff6b6b;
    margin-bottom: 10px;
}

.info-section div {
    margin: 5px 0;
    font-size: 0.9rem;
    color: #ccc;
}

.education-section {
    background: rgba(0, 212, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid #00d4ff;
}

.education-section h3 {
    color: #00d4ff;
    margin-bottom: 10px;
}

.info-panel {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 8px;
    margin-top: 10px;
    border: 1px solid #333;
    transition: all 0.3s ease;
}

.info-panel p {
    margin: 10px 0;
    line-height: 1.5;
    color: #ccc;
    font-size: 0.9rem;
}

.hidden {
    display: none;
}

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

footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    color: #666;
    font-size: 0.9rem;
}

footer a {
    color: #00d4ff;
    text-decoration: none;
}

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

.toast-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(0, 212, 255, 0.9);
    color: white;
    padding: 15px 20px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive design */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .controls-panel {
        order: -1;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .canvas-container {
        padding: 15px;
    }
    
    #canvas {
        max-width: 100%;
        height: auto;
    }
    
    .controls-panel {
        padding: 20px;
    }
    
    .control-group {
        margin-bottom: 20px;
    }
    
    .test-btn, .info-btn {
        display: block;
        width: 100%;
        margin: 5px 0;
    }
}

/* Touch-friendly adjustments for mobile */
@media (hover: none) and (pointer: coarse) {
    #canvas {
        cursor: default;
    }
    
    .test-btn, .info-btn {
        padding: 12px 15px;
        font-size: 1rem;
    }
}