:root {
    --bg-color: #0F172A;
    --text-color: #F8FAFC;
    --card-bg: #1E293B;
    --primary: #3B82F6;
    --border-color: #334155;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #F8FAFC;
        --text-color: #0F172A;
        --card-bg: #FFFFFF;
        --primary: #2563EB;
        --border-color: #E2E8F0;
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    max-width: 800px;
    width: 90%;
    margin: 40px auto;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

h1, h2, h3 {
    color: var(--text-color);
    font-weight: 700;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.subtitle {
    text-align: center;
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-weight: 500;
}

a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

a:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.content-section {
    margin-top: 30px;
}

.content-section h2 {
    font-size: 1.5rem;
    margin-top: 30px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

p {
    margin-bottom: 15px;
    color: inherit;
    opacity: 0.9;
}

ul {
    margin-bottom: 15px;
    padding-left: 20px;
}

li {
    margin-bottom: 8px;
    opacity: 0.9;
}