/* ==========================================================================
   DCM RESEARCH TERMINAL — ACADEMIC ARCHITECTURE
   ========================================================================== */

.research-container {
    display: grid;
    grid-template-columns: 240px 1fr;
    max-width: 1200px;
    margin: 80px auto 40px;
    padding: 0 24px;
    gap: 32px;
}

@media (max-width: 768px) {
    .research-container { grid-template-columns: 1fr; }
}

/* ─── LEFT CONTROLS SIDEBAR ────────────────────────────────────── */
.research-sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.sidebar-filter-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--term-text-sub);
    letter-spacing: 1.5px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--term-border);
}

.filter-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 24px;
}

.filter-tag {
    font-size: 11px;
    font-family: var(--font-sans);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--term-border);
    color: var(--term-text-muted);
    padding: 4px 10px;
    border-radius: 20px;
    cursor: pointer;
    transition: 0.15s;
}

.filter-tag:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}

.filter-tag.active {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--term-blue);
    color: #fff;
}

/* ─── RESEARCH ENTRIES ─────────────────────────────────────────── */
.paper-entry {
    background: var(--term-panel-bg);
    border: 1px solid var(--term-border);
    border-radius: 10px;
    padding: 28px;
    margin-bottom: 24px;
    position: relative;
    transition: border-color 0.2s;
}

.paper-entry:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.paper-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.doi-badge {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    color: var(--term-purple);
    background: rgba(139, 92, 246, 0.12);
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.paper-date {
    font-size: 11px;
    color: var(--term-text-sub);
    font-family: var(--font-mono);
}

.paper-title {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 12px;
}

.paper-abstract {
    font-size: 13px;
    color: var(--term-text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
    padding-left: 16px;
    border-left: 2px solid var(--term-border);
}

/* ─── ACTIONS BAR ──────────────────────────────────────────────── */
.paper-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--term-border);
}

.btn-academic {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all 0.15s;
}

.btn-academic-primary {
    background: var(--term-blue);
    color: #fff;
    border: 1px solid transparent;
}

.btn-academic-primary:hover {
    background: #2563eb;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.3);
}

.btn-academic-secondary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--term-border);
    color: var(--term-text-main);
}

.btn-academic-secondary:hover {
    background: rgba(255, 255, 255, 0.07);
    color: #fff;
    border-color: rgba(255,255,255,0.2);
}

/* ─── CITATION BOX POPUP/DRAWER ───────────────────────────────── */
.citation-pane {
    background: #0f172a;
    border: 1px solid var(--term-border);
    border-radius: 6px;
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--term-text-muted);
    margin-top: 12px;
    position: relative;
    display: none; /* Toggled via Javascript */
}

.citation-pane.visible { display: block; }

.citation-copy-btn {
    position: absolute;
    top: 8px; right: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--term-border);
    color: var(--term-text-sub);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 10px;
    cursor: pointer;
}
.citation-copy-btn:hover { color: #fff; border-color: var(--term-text-muted); }

.citation-text {
    padding-right: 12px;
    line-height: 1.5;
    color: #94a3b8;
}

/* Refined Sub-citation Grid Layouts */
.citation-block {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.citation-sub {
    background: rgba(255,255,255,0.01);
    border: 1px solid rgba(255,255,255,0.03);
    border-radius: 4px;
    padding: 12px;
    position: relative;
}
.citation-sub-header {
    font-size: 9px;
    font-weight: 800;
    color: var(--term-text-sub);
    margin-bottom: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    padding-bottom: 6px;
}
.citation-sub pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: #cbd5e1;
}
.inline-copy-btn {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: #94a3b8;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 8.5px;
    cursor: pointer;
    font-family: var(--font-mono);
}
.inline-copy-btn:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}