:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --editor-bg: #f5f5f5;
    --editor-text: #24292e;
    --button-bg: #3498db;
    --button-text: #ffffff;
    --header-bg: #2c3e50;
    --border-color: #e1e4e8;
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

header {
    background-color: var(--header-bg);
    color: var(--button-text);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

main {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.editor {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.editor:hover {
    transform: translateY(-5px);
}

.editor h2 {
    margin: 0;
    padding: 0.5rem 1rem;
    background-color: var(--button-bg);
    color: var(--button-text);
    font-size: 1rem;
}

textarea {
    width: 100%;
    height: 150px;
    background-color: var(--editor-bg);
    color: var(--editor-text);
    border: none;
    padding: 1rem;
    font-family: 'Roboto Mono', monospace;
    resize: vertical;
    transition: background-color 0.3s, color 0.3s;
}

button {
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 1rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s, transform 0.1s;
}

button:hover {
    background-color: #2980b9;
}

button:active {
    transform: scale(0.98);
}

#runButton {
    display: block;
    width: 100%;
    margin: 1rem 0;
}

#runButton svg {
    width: 20px;
    height: 20px;
    margin-right: 8px;
}

#themeToggle {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
}

#themeToggle svg {
    width: 24px;
    height: 24px;
    stroke: var(--button-text);
}

#output {
    width: 100%;
    height: 300px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    border-radius: 8px;
    transition: background-color 0.3s;
}

/* Dark theme */
body.dark-theme {
    --bg-color: #1e1e1e;
    --text-color: #ffffff;
    --editor-bg: #2d2d2d;
    --editor-text: #e1e1e1;
    --button-bg: #000000;
    --button-text: #ffffff;
    --header-bg: #333333;
    --border-color: #4a4a4a;
}

@media (max-width: 768px) {
    textarea {
        height: 120px;
    }

    #output {
        height: 200px;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.editor, #runButton, #outputContainer {
    animation: slideIn 0.5s ease forwards;
}

#output {
    animation: fadeIn 0.5s ease forwards;
}