:root {
    --bg: #fff;
    --text: #000;
    --text-muted: rgba(0, 0, 0, 0.7);
    --border: #000;
    --box-bg: #fafafa;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111;
        --text: #fff;
        --text-muted: rgba(255, 255, 255, 0.7);
        --border: #fff;
        --box-bg: #1a1a1a;
    }
}

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

body {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding: 3rem 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

header {
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

header p {
    font-size: 0.875rem;
    margin-top: 0.5rem;
    opacity: 0.7;
}

.paper {
    margin-bottom: 3rem;
}

.paper-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.paper-authors {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.paper-venue {
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.paper-venue a {
    color: var(--text);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.paper-venue a:hover {
    text-decoration-thickness: 2px;
}

.paper-media {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.paper-media img {
    width: 100%;
    height: auto;
    border: 1px solid var(--border);
}

.bibtex-container {
    margin-top: 0.5rem;
}

.bibtex-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.bibtex-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--text);
    opacity: 0.2;
}

.bibtex-box {
    background: var(--box-bg);
    border: 1px solid var(--border);
    position: relative;
}

.bibtex-content {
    margin: 0;
    padding: 0.1rem 0.2rem;
    font-family: inherit;
    font-size: 0.75rem;
    line-height: 1.2;
    overflow-x: auto;
    white-space: pre;
}

.copy-btn {
    position: absolute;
    top: -1px;
    right: -1px;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.2rem 0.4rem;
    font-family: inherit;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    color: var(--text);
    line-height: 1;
}

.copy-btn:hover {
    background: var(--text);
    color: var(--bg);
}

footer {
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    opacity: 0.6;
}

@media (max-width: 600px) {
    body {
        padding: 2rem 1rem;
    }

    header h1 {
        font-size: 1.25rem;
    }

    .paper-title {
        font-size: 1.1rem;
    }

    .paper-media {
        grid-template-columns: 1fr;
    }
}