/* ==========================================================================
   Research & Systems Engineering Stylesheet
   ========================================================================== */

.research-paper-container {
    max-width: 840px;
    margin: 0 auto;
    padding: 40px 24px 80px 24px;
}

.paper-header {
    margin-bottom: 36px;
}

.paper-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: hsla(280, 100%, 70%, 0.12);
    color: hsl(280, 100%, 75%);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border: 1px solid hsla(280, 100%, 70%, 0.25);
    margin-bottom: 16px;
}

[data-theme="light"] .paper-badge {
    background: hsla(280, 85%, 52%, 0.08);
    color: hsl(280, 85%, 52%);
    border-color: hsla(280, 85%, 52%, 0.2);
}

.paper-title {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    color: var(--text);
}

.paper-subtitle {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 20px;
    font-style: italic;
}

.paper-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.925rem;
    color: var(--text-muted);
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.paper-hero-image-wrapper {
    margin: 32px 0 40px 0;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    background-color: var(--surface);
    box-shadow: 0 16px 36px rgba(0,0,0,0.18);
}

.paper-hero-image {
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: 520px;
    object-fit: cover;
    display: block;
}

.paper-content {
    font-size: 1.075rem;
    line-height: 1.8;
    color: var(--text);
}

.paper-content h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 18px;
    letter-spacing: -0.02em;
    color: var(--text);
}

.paper-content h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 14px;
    color: var(--text);
}

.paper-content p {
    margin-bottom: 22px;
}

.paper-content ul, .paper-content ol {
    margin-bottom: 24px;
    padding-left: 28px;
}

.paper-content li {
    margin-bottom: 10px;
    line-height: 1.7;
}

.paper-content li > ul,
.paper-content li > ol {
    margin-top: 8px;
    margin-bottom: 8px;
    padding-left: 24px;
}

.paper-content blockquote {
    border-left: 3px solid hsl(280, 85%, 65%);
    background: hsla(280, 85%, 65%, 0.05);
    border-radius: 0 8px 8px 0;
    padding: 16px 20px;
    margin: 28px 0;
    color: var(--text);
}

.paper-content blockquote p {
    margin: 0;
    font-weight: 500;
}

.paper-content code {
    font-family: var(--font-mono, monospace);
    font-size: 0.9em;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 2px 6px;
    border-radius: 6px;
}

.paper-content .code-block-wrapper {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin: 28px 0;
    overflow-x: auto;
}

.paper-content .table-wrapper {
    overflow-x: auto;
    margin: 32px 0;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.paper-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.paper-content th, .paper-content td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    text-align: left;
}

.paper-content th:last-child, .paper-content td:last-child {
    border-right: none;
}

.paper-content tr:last-child td {
    border-bottom: none;
}

.paper-content th {
    background: var(--surface);
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}

.section-divider {
    border: 0;
    height: 1px;
    background: var(--border);
    margin: 48px 0;
}

.paper-tags-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 48px 0 32px 0;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.paper-cta-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 36px 32px;
    text-align: center;
    margin-top: 56px;
}