:root {
    --bg-card: #2d2d2d;
    --accent-blue: #61afef;
    --border-color: #333333;
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
}

[data-theme="light"] {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #333333;
    --text-secondary: #6c757d;
    --accent-blue: #4078f2;
    --border-color: #e9ecef;
}

[data-theme="dark"] {
    --bg-card: #2d2d2d;
    --accent-blue: #61afef;
    --border-color: #333;
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
}

[data-theme="sepia"] {
    --bg-primary: #f4ecd8;
    --bg-secondary: #fbf7f0;
    --bg-card: #fbf7f0;
    --text-primary: #5c4b37;
    --text-secondary: #86776b;
    --border-color: #e0d5c1;
    --accent-blue: #825d0a;
}

[data-theme="ocean"] {
    --bg-primary: #1a1f2d;
    --bg-secondary: #232936;
    --bg-card: #232936;
    --text-primary: #e4e8f7;
    --text-secondary: #8b95b3;
    --accent-blue: #82aaff;
    --border-color: #2d344a;
}

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

.markdown-container {
    max-width: 1000px;
    margin: 0 auto 2rem;
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
}

.code-container {
    position: relative;
    margin: 1.5rem 0;
    border-radius: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.code-container pre {
    margin: 0;
    padding: 3.5rem 1.5rem 1.5rem;
    overflow-x: auto;
    background: transparent !important;
}

.code-container code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.language-label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.copy-button {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.copy-button:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.theme-btn.active {
    background-color: var(--bg-secondary);
    border: 1px solid var(--accent-blue);
}

/* Article Grid ve Card Stilleri */
.article-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    transition: opacity 0.2s ease;
}

.article-card {
    display: block;
    background-color: var(--bg-card);
    border-radius: 12px;
    transition: transform 0.2s ease;
    opacity: 0;
    animation: fadeIn 0.3s ease forwards;
}

.article-card article {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.article-card img {
    transition: transform 0.5s ease;
}

.article-card:hover img {
    transform: scale(1.05);
}

.article-card h3 {
    transition: color 0.3s ease;
    color: var(--text-primary);
}

.article-card:hover h3 {
    color: var(--accent-blue);
}

.article-card p {
    color: var(--text-secondary);
}

.hover-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.article-card:hover .hover-line {
    transform: scaleX(1);
}

/* Infinite Scroll için gerekli stiller */
.sentinel {
    height: 10px;
    margin: 20px 0;
    opacity: 0;
    pointer-events: none;
}

.article-grid.loading {
    opacity: 0.7;
}

html {
    scroll-behavior: smooth;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .markdown-container {
        padding: 1.5rem;
    }

    .code-container pre {
        padding: 3rem 1rem 1rem;
    }

    .copy-button {
        padding: 0.4rem 0.8rem;
    }

    .article-grid {
        gap: 1rem;
    }
}