:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-color: #212529;
    --border-color: #dee2e6;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-container {
    flex: 1;
}

header {
    background-color: var(--surface-color);
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
}

main.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.format-card {
    text-decoration: none;
    color: var(--text-color);
    display: block;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.format-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.format-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: #343a40;
    color: white;
    margin-top: auto;
}

/* Стили для страницы гайда */
.guide-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.guide-controls label {
    font-weight: bold;
}

.guide-controls select, .guide-controls button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
}

.guide-controls button {
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    border: none;
}

.playground-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    height: 60vh;
}

.playground-grid h2 {
    margin-top: 0;
}

#codeInput {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: monospace;
    font-size: 1rem;
    padding: 1rem;
    resize: none;
}

#outputContainer {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 1rem;
    overflow: auto;
    box-sizing: border-box;
}

#outputContainer img {
    max-width: 100%;
}