:root {
    --primary: #2c3e50;
    --secondary: #18bc9c;
    --accent: #e74c3c;
    --bg: #f8f9fa;
    --text: #333333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

h1 {
    color: var(--primary);
    text-align: center;
    border-bottom: 3px solid var(--secondary);
    padding-bottom: 10px;
    font-size: 28px;
}

h2 {
    color: var(--primary);
    background: #ebf5fb;
    padding: 10px 15px;
    border-left: 5px solid var(--secondary);
    border-radius: 0 4px 4px 0;
    margin-top: 30px;
}

h3 {
    color: #2980b9;
    margin-bottom: 5px;
}

.meta-info {
    background: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 25px;
    font-weight: bold;
}

.exercise-card {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    background: #ffffff;
    transition: transform 0.2s;
}

.exercise-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.media-container {
    margin: 15px 0;
    text-align: center;
    background: #f1f2f6;
    padding: 10px;
    border-radius: 6px;
}

.media-container img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.video-btn {
    display: inline-block;
    background: var(--secondary);
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: bold;
    margin-top: 10px;
    font-size: 14px;
}

.video-btn:hover {
    background: #128f76;
}

.badge {
    background: #34495e;
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: normal;
    vertical-align: middle;
    margin-left: 10px;
}

ul {
    padding-left: 20px;
    margin: 5px 0;
}

li {
    margin-bottom: 5px;
}

.rules-block {
    background: #fadbd8;
    border-left: 5px solid var(--accent);
    padding: 15px;
    border-radius: 4px;
    margin-top: 30px;
}