:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --editor-bg: #f5f5f5;
    --editor-text: #2c3e50;
    --button-bg: #4CAF50;
    --button-hover: #45a049;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --editor-bg: #2d2d2d;
    --editor-text: #ffffff;
    --button-bg: #45a049;
    --button-hover: #4CAF50;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.watermark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 24px;
    opacity: 0.2;
    pointer-events: none;
    font-weight: bold;
}

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

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

.controls {
    display: flex;
    gap: 10px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: var(--button-bg);
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: var(--button-hover);
}

.file-controls {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    align-items: center;
}

input[type="file"] {
    padding: 10px;
    border-radius: 5px;
    background-color: var(--editor-bg);
    color: var(--editor-text);
}

.editor-container {
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

#codeEditor {
    width: 100%;
    height: 70vh;
    padding: 20px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 16px;
    line-height: 1.5;
    border: none;
    resize: vertical;
    background-color: var(--editor-bg);
    color: var(--editor-text);
}

#codeEditor:focus {
    outline: none;
}