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

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

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

.header h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #e0e0e0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background-color: #2c3e50;
    color: white;
}

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

.canvas-container {
    flex: 1;
    min-width: 500px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

#stickCanvas {
    width: 100%;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: white;
}

.canvas-controls {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.controls-panel {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.input-section {
    display: none;
}

.input-section.active {
    display: block;
}

.input-section h3 {
    margin-bottom: 20px;
    color: #2c3e50;
}

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

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #666;
}

input[type="number"] {
    width: 80px;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-right: 10px;
}

input[type="range"] {
    width: 100%;
    margin: 10px 0;
}

.angle-value {
    display: inline-block;
    min-width: 45px;
    text-align: right;
    color: #666;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    margin-bottom: 10px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #2c3e50;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #34495e;
}

#downloadBtn {
    background-color: #27ae60;
}

#downloadBtn:hover {
    background-color: #219a52;
}

#resetBtn {
    background-color: #e74c3c;
}

#resetBtn:hover {
    background-color: #c0392b;
}

@media (max-width: 900px) {
    .main-content {
        flex-direction: column;
    }
    
    .canvas-container,
    .controls-panel {
        min-width: 100%;
    }
}