* {
    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;
}

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

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

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.main-content {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.editor-container {
    width: 100%;
}

.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    flex-wrap: wrap;
}

.toolbar button {
    padding: 10px 15px;
    border: none;
    background: #667eea;
    color: white;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.toolbar button:hover {
    background: #5a6fd8;
}

#textEditor {
    width: 100%;
    min-height: 400px;
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 16px;
    font-family: 'Courier New', monospace;
    resize: vertical;
    outline: none;
}

#textEditor:focus {
    border-color: #667eea;
}

footer {
    text-align: center;
    color: white;
    margin-top: 30px;
    padding: 20px;
}