:root {
    --bg-color: #f8fafc;
    --text-color: #1e293b;
    --primary-color: #3b82f6;
    --secondary-color: #64748b;
    --card-bg: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    --heading-font: 'Outfit', sans-serif;
    --body-font: 'Inter', sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0f172a;
        --text-color: #f1f5f9;
        --primary-color: #60a5fa;
        --secondary-color: #94a3b8;
        --card-bg: rgba(30, 41, 59, 0.7);
        --border-color: rgba(255, 255, 255, 0.1);
        --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    }
}

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

body {
    font-family: var(--body-font);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

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

a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--glass-shadow);
    margin-bottom: 2rem;
}

header.article-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

h1, h2, h3, h4 {
    font-family: var(--heading-font);
    margin-bottom: 1rem;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.4rem;
    margin-top: 1.5rem;
    color: var(--secondary-color);
}

p {
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
}

ul, ol {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(59, 130, 246, 0.1);
    font-weight: 600;
}

tr:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.hero-image:hover {
    transform: scale(1.02);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.cta-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid var(--primary-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    text-align: center;
}

.cta-box h2 {
    border-bottom: none;
    margin-top: 0;
}

.checklist input[type="checkbox"] {
    margin-right: 0.5rem;
}