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

body {
    font-family: 'Courier New', Courier, monospace;
    background-color: #0e0e0e;
    color: #f4f4f4;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: auto;
}

/* Header */
.site-header {
    background-color: #1a1a1a;
    padding: 20px 0;
    border-bottom: 2px solid #2c2c2c;
}

.logo {
    font-size: 2rem;
    color: #00ffff;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin-top: 10px;
}

.main-nav a {
    text-decoration: none;
    color: #ccc;
    transition: color 0.3s ease;
}

.main-nav a:hover {
    color: #00ffff;
}

/* Hero Section */
.hero {
    background: linear-gradient(to right, #111, #222);
    padding: 60px 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background-color: #00ffff;
    color: #000;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.btn:hover {
    background-color: #00dddd;
}

/* Intro Section */
.intro-section {
    padding: 40px 0;
}

.intro-section h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #ff6666;
}

/* Footer */
.site-footer {
    background-color: #1a1a1a;
    padding: 20px 0;
    text-align: center;
    border-top: 2px solid #2c2c2c;
    font-size: 0.9rem;
    color: #888;
}


/* Стили для формул */
.math {
    font-size: 1.2rem;
    margin: 20px 0;
    text-align: center;
}

/* Подсказки */
.tooltip {
    border-bottom: 1px dashed #00ffff;
    cursor: help;
    transition: opacity 0.3s ease;
}

.tooltip:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #222;
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    white-space: nowrap;
    font-size: 0.9rem;
    z-index: 100;
    min-width: 100px;
    text-align: center;
    box-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

/* Цитаты */
blockquote {
    background-color: #1a1a1a;
    border-left: 4px solid #00ffff;
    padding: 15px 20px;
    margin: 20px 0;
    font-style: italic;
    color: #ccc;
}

blockquote em {
    display: block;
    margin-top: 10px;
    color: #ff6666;
    font-weight: bold;
}


/* Стили для формы */
form label {
    display: block;
    margin-bottom: 10px;
}

form input[type="number"] {
    padding: 5px;
    font-size: 1rem;
    width: 100%;
    max-width: 300px;
    margin-top: 5px;
    background-color: #222;
    border: 1px solid #444;
    color: #fff;
}

form button {
    margin-top: 15px;
    padding: 10px 20px;
    font-size: 1rem;
    background-color: #00ffff;
    color: #000;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

form button:hover {
    background-color: #00dddd;
}