/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: linear-gradient(to bottom, #f7f7f7, #e4e4e4);
    --text-color: #333;
    --section-bg: #fff;
    --header-bg: #fff;
    --footer-bg: #2c3e50;
    --footer-text: #fff;
    --accent: #3498db;
    --hover: #2980b9;
    --border: rgba(0, 0, 0, 0.1);
}

/* Dark mode overrides */
body.dark-mode {
    --bg-color: linear-gradient(to bottom, #1a1a1a, #0d0d0d);
    --text-color: #ccc;
    --section-bg: #2a2a2a;
    --header-bg: #2a2a2a;
    --footer-bg: #1a1a1a;
    --footer-text: #ccc;
}

body {
    font-family: 'Georgia', serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
    padding: 1rem;
    transition: background 0.3s, color 0.3s;
}

header {
    text-align: center;
    padding: 2rem;
    background: var(--header-bg);
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px var(--border);
    position: relative;
}

.controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

#lang-select, #mode-toggle {
    font-size: 0.9rem;
    padding: 0.5rem;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--section-bg);
    color: var(--text-color);
}

#mode-toggle {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

header .subtitle {
    font-style: italic;
    color: #7f8c8d;
}

header blockquote {
    margin: 1.5rem;
    font-style: italic;
    border-left: 4px solid var(--accent);
    padding-left: 1rem;
}

header cite {
    font-size: 0.9rem;
}

section {
    margin-bottom: 3rem;
    padding: 1.5rem;
    background: var(--section-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--border);
}

section h2 {
    border-bottom: 2px solid var(--accent);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

section h3 {
    margin-top: 1.5rem;
    color: var(--text-color);
}

ul, ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

blockquote {
    font-style: italic;
    color: #7f8c8d;
    margin: 1.5rem 0;
    padding: 0.5rem;
    background-color: var(--section-bg);
    border-radius: 4px;
}

.action-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.action-link:hover {
    background-color: var(--hover);
}

footer {
    text-align: center;
    padding: 1rem;
    background: var(--footer-bg);
    color: var(--footer-text);
}

/* Responsive design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    section {
        padding: 1rem;
    }
    .controls {
        top: 0.5rem;
        right: 0.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }
}