:root {
    --primary-color: #ff0055;
    --secondary-color: #00ff88;
    --background-color: #121212;
    --text-color: #ffffff;
    --card-color: #1e1e1e;
    --hover-glow: rgba(255, 0, 85, 0.2);
    --secondary-glow: rgba(0, 255, 136, 0.15);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), #ff3377);
}

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

body {
    font-family: 'Arial', sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    background-image: 
        radial-gradient(circle at 10% 90%, var(--hover-glow) 0%, transparent 40%),
        radial-gradient(circle at 90% 10%, var(--secondary-glow) 0%, transparent 40%);
    min-height: 100vh;
    padding: 2rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem 3rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--text-color);
    transform: translateX(-5px);
}

.topic-header h1 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.topic-header .meta-info {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2rem;
}

.topic-content h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.topic-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.topic-content ul {
    list-style-position: inside;
    padding-left: 1rem;
    margin-bottom: 1.5rem;
}

.topic-content li {
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.topic-content code {
    background: var(--background-color);
    padding: 0.2rem 0.4rem;
    border-radius: 5px;
    font-family: 'Courier New', Courier, monospace;
    color: var(--secondary-color);
}

.topic-content pre {
    background: var(--background-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.topic-content pre code {
    padding: 0;
    background: none;
}