/* ═══════════════════════════════════════════════════════════════════
   DeepGraph — Warm Serif Theme (Claude-inspired)
   ═══════════════════════════════════════════════════════════════════ */

/* ── CSS Variables ────────────────────────────────────────────────── */

:root {
    --bg-base:       #f7f5f0;
    --bg-card:       #ffffff;
    --bg-card-hover: #faf8f5;
    --bg-elevated:   #f0ede6;
    --border:        #e5e0d5;
    --border-hover:  #d0c9bc;
    --accent:        #c4704b;
    --accent-dim:    rgba(196, 112, 75, 0.08);
    --accent-glow:   rgba(196, 112, 75, 0.04);
    --green:         #3d8b5e;
    --green-dim:     rgba(61, 139, 94, 0.08);
    --red:           #c4453a;
    --red-dim:       rgba(196, 69, 58, 0.06);
    --gold:          #a8842a;
    --gold-dim:      rgba(168, 132, 42, 0.08);
    --purple:        #7c5cbf;
    --purple-dim:    rgba(124, 92, 191, 0.08);
    --text-primary:  #2b2520;
    --text-secondary:#5c534a;
    --text-dim:      #9a9088;
    --text-muted:    #c4bdb4;
    --font-serif:    'Newsreader', 'Georgia', 'Times New Roman', serif;
    --font:          'Source Sans 3', 'Source Sans Pro', system-ui, -apple-system, sans-serif;
    --font-mono:     'Source Code Pro', 'JetBrains Mono', 'Fira Code', monospace;
    --sidebar-w:     240px;
    --sidebar-w-collapsed: 56px;
    --topbar-h:      56px;
    --radius:        8px;
    --radius-sm:     5px;
    --transition:    0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ────────────────────────────────────────────────────────── */

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

html, body {
    height: 100%;
    overflow: hidden;
    font-family: var(--font);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Scrollbar ────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d0c9bc; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #b8b0a4; }

/* ── Top Bar ──────────────────────────────────────────────────────── */

header#topBar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    background: #fffdf8;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 16px;
    z-index: 100;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.sidebar-toggle {
    width: 34px; height: 34px;
    display: flex; align-items: center; justify-content: center;
    background: none; border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}
.sidebar-toggle:hover { background: var(--accent-dim); color: var(--accent); }

.app-name {
    font-size: 1.2rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.live-badge {
    font-size: 0.62rem;
    padding: 3px 10px;
    border-radius: 10px;
    background: var(--bg-elevated);
    color: var(--text-dim);
    font-weight: 700;
    letter-spacing: 0.08em;
    transition: all 0.3s;
}
.live-badge.running {
    background: var(--green-dim);
    color: var(--green);
    animation: pulse-badge 2s ease-in-out infinite;
}
@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}

.topbar-stats {
    display: flex;
    gap: 20px;
    margin-left: 12px;
    flex-shrink: 0;
}
.topbar-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}
.topbar-stat-val {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}
.topbar-stat-lbl {
    font-size: 0.58rem;
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.topbar-right {
    margin-left: auto;
    flex: 0 0 320px;
    min-width: 0;
}

/* ── Search ───────────────────────────────────────────────────────── */

.search-container { position: relative; }

.search-icon {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 8px 14px 8px 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-base);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: var(--font);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0; right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-height: 460px;
    overflow-y: auto;
    z-index: 9999;
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
    display: none;
}
.search-results.open { display: block; }

.search-section { padding: 10px 14px; border-bottom: 1px solid var(--border); }
.search-section:last-child { border-bottom: none; }
.search-section-title {
    color: var(--accent);
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 6px;
}
.search-result-item {
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: background var(--transition);
    line-height: 1.5;
}
.search-result-item:hover { background: var(--bg-elevated); }
.search-result-item .sr-title { color: var(--text-primary); font-weight: 600; }
.search-result-item .sr-meta { color: var(--text-dim); font-size: 0.68rem; margin-top: 2px; }

/* ── App Shell Layout ─────────────────────────────────────────────── */

.app-shell {
    position: fixed;
    top: var(--topbar-h);
    left: 0; right: 0; bottom: 0;
    display: flex;
}

/* ── Sidebar ──────────────────────────────────────────────────────── */

.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: #fffdf8;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    z-index: 50;
}
.sidebar.collapsed { width: var(--sidebar-w-collapsed); }

.nav-items {
    flex: 1;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    overflow: hidden;
    text-align: left;
    width: 100%;
}
.nav-item svg {
    flex-shrink: 0;
    width: 20px; height: 20px;
}
.nav-item:hover {
    background: var(--accent-dim);
    color: var(--text-primary);
}
.nav-item.active {
    background: var(--accent-dim);
    color: var(--accent);
    font-weight: 600;
}
.sidebar.collapsed .nav-item span { opacity: 0; width: 0; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 10px; }

/* Sidebar footer */
.sidebar-footer {
    padding: 12px 8px;
    border-top: 1px solid var(--border);
}
.pipeline-controls {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.btn-pipeline {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    background: none;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    overflow: hidden;
}
.btn-pipeline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}
.btn-pipeline.btn-expand:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: var(--gold-dim);
}
.sidebar.collapsed .btn-pipeline span { opacity: 0; width: 0; }
.sidebar.collapsed .btn-pipeline { justify-content: center; padding: 8px; }

/* ── Main Content ─────────────────────────────────────────────────── */

.content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    position: relative;
}

/* ── Tab Panels ───────────────────────────────────────────────────── */

.tab-panel {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0s 0.25s;
}
.tab-panel.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.25s ease, visibility 0s 0s;
}

.tab-scroll {
    height: 100%;
    overflow-y: auto;
    padding: 20px 24px 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ── Cards ────────────────────────────────────────────────────────── */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: border-color var(--transition);
}
.card:hover { border-color: var(--border-hover); }
.card-compact { padding: 14px 18px; }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    gap: 12px;
}
.card-header h3 {
    font-size: 0.92rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.btn-link {
    background: none;
    border: none;
    color: var(--accent);
    font-family: var(--font);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition);
}
.btn-link:hover { opacity: 0.7; }

/* ── Badges ───────────────────────────────────────────────────────── */

.badge {
    font-size: 0.62rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 8px;
    letter-spacing: 0.04em;
}
.badge-dim { background: var(--bg-elevated); color: var(--text-dim); }
.badge-accent { background: var(--accent-dim); color: var(--accent); }
.badge-green { background: var(--green-dim); color: var(--green); }
.badge-red { background: var(--red-dim); color: var(--red); }
.badge-gold { background: var(--gold-dim); color: var(--gold); }

/* ── Stat Grid (Overview) ─────────────────────────────────────────── */

.stat-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: border-color var(--transition), transform 0.15s ease;
}
.stat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.stat-icon {
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 10px;
    margin-bottom: 4px;
}
.stat-icon-blue   { background: var(--accent-dim); color: var(--accent); }
.stat-icon-cyan   { background: var(--accent-dim); color: var(--accent); }
.stat-icon-gold   { background: var(--gold-dim);   color: var(--gold); }
.stat-icon-red    { background: var(--red-dim);     color: var(--red); }
.stat-icon-green  { background: var(--green-dim);   color: var(--green); }
.stat-icon-purple { background: var(--purple-dim);  color: var(--purple); }

.stat-number {
    font-size: 1.6rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    line-height: 1;
}
.stat-label {
    font-size: 0.68rem;
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ── Processing List ──────────────────────────────────────────────── */

.processing-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.proc-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-dim);
    border: 1px solid rgba(196, 112, 75, 0.15);
    border-radius: 8px;
    padding: 7px 12px;
    font-size: 0.72rem;
    animation: proc-pulse 2.5s ease-in-out infinite;
}
.proc-item .proc-id {
    color: var(--accent);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.68rem;
}
.proc-item .proc-title {
    color: var(--text-secondary);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}
.proc-item .proc-step {
    color: var(--green);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}
.proc-item.proc-done {
    opacity: 0.5;
    border-color: rgba(100, 160, 100, 0.25);
    background: rgba(100, 160, 100, 0.05);
}
.proc-item.proc-done .proc-step {
    color: var(--text-muted, #888);
}
@keyframes proc-pulse {
    0%, 100% { border-color: rgba(196, 112, 75, 0.15); }
    50% { border-color: rgba(196, 112, 75, 0.35); }
}

/* ── Recently Discovered Grid ─────────────────────────────────────── */

.recently-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 10px;
}

.recently-item {
    padding: 14px 16px;
    border-radius: var(--radius);
    border-left: 3px solid var(--border);
    background: var(--bg-card);
    transition: transform 0.15s ease, box-shadow 0.15s ease, background var(--transition);
    cursor: default;
}
.recently-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    background: var(--bg-card-hover);
}
.recently-item.type-gap                  { border-left-color: var(--green); }
.recently-item.type-contradiction        { border-left-color: var(--red); }
.recently-item.type-opportunity          { border-left-color: var(--gold); }
.recently-item.type-paper                { border-left-color: var(--accent); }
.recently-item.type-contradiction_analysis { border-left-color: var(--red); }
.recently-item.type-method_transfer      { border-left-color: var(--accent); }
.recently-item.type-assumption_challenge { border-left-color: var(--gold); }
.recently-item.type-ignored_limitation   { border-left-color: var(--purple); }
.recently-item.type-paradigm_exhaustion  { border-left-color: var(--text-dim); }

.recently-type-badge {
    font-size: 0.58rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 5px;
}
.recently-type-badge.gap                  { color: var(--green); }
.recently-type-badge.contradiction        { color: var(--red); }
.recently-type-badge.opportunity          { color: var(--gold); }
.recently-type-badge.paper                { color: var(--accent); }
.recently-type-badge.contradiction_analysis { color: var(--red); }
.recently-type-badge.method_transfer      { color: var(--accent); }
.recently-type-badge.assumption_challenge { color: var(--gold); }
.recently-type-badge.ignored_limitation   { color: var(--purple); }
.recently-type-badge.paradigm_exhaustion  { color: var(--text-dim); }

.recently-item .ri-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.8rem;
    line-height: 1.4;
    margin-bottom: 4px;
}
.recently-item .ri-desc {
    color: var(--text-secondary);
    font-size: 0.73rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.recently-item .ri-meta {
    color: var(--text-dim);
    font-size: 0.65rem;
    margin-top: 6px;
}

/* ── Graph / Explore ──────────────────────────────────────────────── */

.explore-graph-card { padding-bottom: 8px; }
.explore-graph-card svg { border-radius: var(--radius-sm); }
.graph-preview-wrap svg { border-radius: var(--radius-sm); }
.card-graph-preview { padding-bottom: 8px; }

/* ── Breadcrumb ───────────────────────────────────────────────────── */

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.82rem;
}
.crumb {
    color: var(--accent);
    cursor: pointer;
    padding: 3px 8px;
    border-radius: 4px;
    transition: background var(--transition);
    font-weight: 500;
}
.crumb:hover { background: var(--accent-dim); }
.crumb.active { color: var(--text-primary); cursor: default; font-weight: 700; }
.crumb.active:hover { background: transparent; }
.crumb-sep { color: var(--text-muted); margin: 0 2px; user-select: none; }

/* ── Explore Summary ──────────────────────────────────────────────── */

.summary-hero {
    background: linear-gradient(135deg, rgba(196,112,75,0.04) 0%, transparent 50%);
    border: 1px solid rgba(196,112,75,0.12);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-bottom: 14px;
}
.summary-hero h4 {
    font-size: 1.1rem;
    font-family: var(--font-serif);
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}
.summary-hero p {
    color: var(--text-secondary);
    font-size: 0.84rem;
    line-height: 1.7;
    margin-bottom: 8px;
}
.summary-hero p:last-child { margin-bottom: 0; }

.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 12px;
}

.summary-card-inner {
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
}
.summary-card-inner h4 {
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 10px;
}

.summary-item {
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 8px;
    background: var(--bg-card);
    transition: border-color var(--transition);
}
.summary-item:last-child { margin-bottom: 0; }
.summary-item:hover { border-color: var(--border-hover); }
.summary-item strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.8rem;
    margin-bottom: 4px;
}
.summary-item p {
    color: var(--text-secondary);
    font-size: 0.78rem;
    line-height: 1.6;
}
.summary-item .meta {
    color: var(--text-dim);
    font-size: 0.68rem;
    margin-top: 5px;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}
.chip {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--accent-dim);
    border: 1px solid rgba(196, 112, 75, 0.12);
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition);
}
.chip:hover { background: rgba(196, 112, 75, 0.14); }

/* Children cards in Explore */
.children-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px;
}
.child-card {
    padding: 12px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}
.child-card:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
    transform: translateY(-1px);
}
.child-card .child-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.child-card .child-stats {
    font-size: 0.68rem;
    color: var(--text-dim);
}
.child-card .child-stats span { margin-right: 8px; }

/* ── Evidence (Matrix) ────────────────────────────────────────────── */

.evidence-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.evidence-controls label {
    font-size: 0.78rem;
    color: var(--text-dim);
    font-weight: 600;
}
.evidence-hint {
    color: var(--text-dim);
    font-size: 0.75rem;
    margin-left: auto;
}

.select-input, .select-input-sm {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.78rem;
    outline: none;
    transition: border-color var(--transition);
}
.select-input { padding: 8px 12px; }
.select-input-sm { padding: 6px 10px; font-size: 0.75rem; }
.select-input:focus, .select-input-sm:focus { border-color: var(--accent); }

.matrix-wrap { overflow: auto; max-height: calc(100vh - 320px); }

.matrix-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.78rem;
}
.matrix-controls label { color: var(--text-dim); font-weight: 600; }
.matrix-controls select {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 5px 10px;
    font-size: 0.78rem;
    font-family: var(--font);
}
.matrix-info { color: var(--text-dim); margin-left: auto; font-size: 0.72rem; font-weight: 500; }

.matrix-scroll { overflow: auto; max-height: 500px; }

.matrix-table {
    border-collapse: collapse;
    font-size: 0.72rem;
    width: auto;
    min-width: 100%;
}
.matrix-table th, .matrix-table td {
    border: 1px solid var(--border);
    padding: 7px 10px;
    text-align: center;
    white-space: nowrap;
}
.matrix-table thead th {
    background: var(--bg-elevated);
    color: var(--accent);
    position: sticky;
    top: 0;
    z-index: 2;
    font-weight: 700;
}
.method-header {
    position: sticky;
    left: 0; z-index: 3 !important;
    background: var(--bg-elevated) !important;
    text-align: left !important;
    min-width: 160px;
}
.method-cell {
    position: sticky;
    left: 0;
    background: var(--bg-card);
    z-index: 1;
    text-align: left !important;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 160px;
}
.dataset-header { min-width: 70px; font-size: 0.68rem; }
.matrix-cell { min-width: 70px; font-variant-numeric: tabular-nums; }
.cell-filled { background: rgba(196,112,75,0.06); color: var(--accent); }
.cell-sota { background: var(--green-dim); color: var(--green); font-weight: 700; }
.cell-empty { background: var(--bg-base); color: var(--text-muted); }

/* ── Gaps in Evidence tab ─────────────────────────────────────────── */

.gaps-list { display: flex; flex-direction: column; gap: 8px; }
.gap-item {
    padding: 12px 14px;
    border-radius: var(--radius);
    background: var(--green-dim);
    border-left: 3px solid var(--green);
    font-size: 0.78rem;
    line-height: 1.6;
}
.gap-item .score {
    float: right;
    font-weight: 700;
    color: var(--green);
    font-size: 0.85rem;
}
.gap-item .gap-desc { color: var(--text-secondary); margin-top: 4px; }
.gap-item .proposal { color: var(--text-dim); margin-top: 5px; font-style: italic; }
.gap-item .gap-why { color: var(--green); margin-top: 5px; font-weight: 500; }

/* ── Papers Tab ───────────────────────────────────────────────────── */

.papers-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-input-sm {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.78rem;
    font-family: var(--font);
    outline: none;
    width: 220px;
    transition: border-color var(--transition);
}
.search-input-sm::placeholder { color: var(--text-muted); }
.search-input-sm:focus { border-color: var(--accent); }

.papers-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: calc(100vh - 260px);
    overflow-y: auto;
}

.paper-row {
    padding: 12px 14px;
    border-radius: 8px;
    border-left: 3px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
    cursor: pointer;
}
.paper-row:hover {
    background: var(--bg-card-hover);
    border-left-color: var(--accent);
}
.paper-row.expanded {
    background: var(--bg-elevated);
    border-left-color: var(--accent);
}

.paper-row-top {
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.paper-link {
    color: var(--accent);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    flex-shrink: 0;
}
.paper-link:hover { text-decoration: underline; }
.paper-title {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.8rem;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.paper-date {
    color: var(--text-dim);
    font-size: 0.68rem;
    flex-shrink: 0;
}
.paper-status {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 2px 6px;
    border-radius: 4px;
    flex-shrink: 0;
}
.paper-status.s-extracted { background: var(--green-dim); color: var(--green); }
.paper-status.s-reasoned  { background: var(--accent-dim); color: var(--accent); }
.paper-status.s-processing { background: var(--gold-dim); color: var(--gold); }
.paper-status.s-fetched   { background: var(--purple-dim); color: var(--purple); }
.paper-status.s-error     { background: var(--red-dim); color: var(--red); }

.paper-meta {
    color: var(--text-dim);
    font-size: 0.7rem;
    margin-top: 4px;
}
.paper-expanded-body {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.7;
    display: none;
}
.paper-row.expanded .paper-expanded-body { display: block; }
.paper-claims {
    margin-top: 8px;
}
.paper-claim-item {
    padding: 6px 10px;
    background: var(--bg-base);
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    font-size: 0.75rem;
    line-height: 1.5;
}

/* ── Opportunities Tab ────────────────────────────────────────────── */

.opp-controls { display: flex; gap: 10px; align-items: center; }

.opp-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: calc(100vh - 240px);
    overflow-y: auto;
}

.opp-card {
    padding: 16px 18px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: border-color var(--transition), transform 0.15s ease, box-shadow 0.15s ease;
}
.opp-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
}

.opp-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 8px;
}
.opp-title {
    font-size: 0.92rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--text-primary);
    line-height: 1.4;
    flex: 1;
}
.opp-score {
    flex-shrink: 0;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--gold);
    min-width: 36px;
    text-align: center;
}
.opp-type-badge {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--gold-dim);
    color: var(--gold);
    margin-bottom: 8px;
}
.opp-desc {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.7;
    margin-bottom: 6px;
}
.opp-why {
    color: var(--green);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.5;
}
.opp-source {
    color: var(--text-dim);
    font-size: 0.68rem;
    margin-top: 8px;
}

.opp-score-group {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}
.opp-score-item {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
}
.opp-section {
    margin-top: 10px;
}
.opp-section-label {
    font-size: 0.66rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    margin-bottom: 4px;
}
.opp-experiment {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.65;
}
.opp-impact {
    color: var(--green);
    font-size: 0.82rem;
    line-height: 1.65;
    font-style: italic;
}
.opp-footer {
    margin-top: 12px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.opp-evidence {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.6;
}
.opp-papers {
    margin: 4px 0 10px;
}

/* ── Pattern Cards ────────────────────────────────────────────────── */

.patterns-list {
    display: grid;
    gap: 10px;
}
.pattern-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
}
.pattern-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.pattern-level {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 8px;
    border-radius: 4px;
}
.pattern-level.universal {
    background: rgba(46, 134, 171, 0.1);
    color: #2e86ab;
}
.pattern-level.cross-domain {
    background: var(--purple-dim);
    color: var(--purple);
}
.pattern-type {
    font-size: 0.65rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.pattern-text {
    font-size: 0.92rem;
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.55;
    margin-bottom: 8px;
}
.pattern-domains {
    font-size: 0.72rem;
    color: var(--text-dim);
}
.pattern-domain-chip {
    display: inline-block;
    padding: 1px 6px;
    margin: 2px 3px;
    background: var(--bg-elevated);
    border-radius: 3px;
    font-size: 0.68rem;
    color: var(--text-secondary);
}

/* ── Feed Tab ─────────────────────────────────────────────────────── */

.card-feed { display: flex; flex-direction: column; height: calc(100vh - var(--topbar-h) - 80px); }
.card-feed .card-header { flex-shrink: 0; }

.event-feed {
    flex: 1;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.85;
}

.event {
    padding: 4px 10px;
    border-left: 3px solid var(--border);
    margin-bottom: 1px;
    border-radius: 0 4px 4px 0;
    transition: background var(--transition);
}
.event:hover { background: rgba(0,0,0,0.02); }
.event.type-paper_done      { border-color: var(--accent); }
.event.type-step            { border-color: #8aa0b0; }
.event.type-contradiction   { border-color: var(--red);   background: var(--red-dim); }
.event.type-gap             { border-color: var(--green);  background: var(--green-dim); }
.event.type-error           { border-color: #c87730;       background: rgba(200,119,48,0.05); }
.event.type-taxonomy_expanded { border-color: var(--gold); background: var(--gold-dim); }
.event.type-pipeline_start  { border-color: var(--purple); }
.event.type-pipeline_done   { border-color: var(--purple); }
.event.type-info            { border-color: var(--text-dim); }

.event .ev-time { color: var(--text-muted); }
.event .ev-type { font-weight: 700; }
.ev-type-paper_done    { color: var(--accent); }
.ev-type-step          { color: #7090a8; }
.ev-type-contradiction { color: var(--red); }
.ev-type-gap           { color: var(--green); }
.ev-type-error         { color: #c87730; }
.ev-type-taxonomy_expanded { color: var(--gold); }
.ev-type-pipeline_start { color: var(--purple); }
.ev-type-pipeline_done  { color: var(--purple); }
.ev-type-info          { color: var(--text-dim); }

/* ── Providers Tab ────────────────────────────────────────────────── */

.providers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.provider-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    transition: border-color var(--transition);
}
.provider-card:hover { border-color: var(--border-hover); }

.provider-name {
    font-size: 0.92rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--text-primary);
    margin-bottom: 4px;
}
.provider-url {
    font-size: 0.68rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    margin-bottom: 12px;
    word-break: break-all;
}
.provider-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.provider-stat {
    display: flex;
    flex-direction: column;
}
.provider-stat-val {
    font-size: 1rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}
.provider-stat-val.green { color: var(--green); }
.provider-stat-val.red { color: var(--red); }
.provider-stat-val.cyan { color: var(--accent); }
.provider-stat-val.gold { color: var(--gold); }
.provider-stat-lbl {
    font-size: 0.65rem;
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.provider-bar-wrap {
    height: 4px;
    background: var(--bg-base);
    border-radius: 2px;
    margin-top: 12px;
    overflow: hidden;
}
.provider-bar {
    height: 100%;
    border-radius: 2px;
    background: var(--accent);
    transition: width 0.5s ease;
}

/* ── Empty states ─────────────────────────────────────────────────── */

.empty-msg {
    color: var(--text-dim);
    font-style: italic;
    padding: 24px;
    text-align: center;
    font-size: 0.8rem;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    color: var(--text-dim);
    text-align: center;
}
.empty-state svg { margin-bottom: 12px; opacity: 0.4; }
.empty-state p { font-size: 0.85rem; line-height: 1.6; max-width: 340px; }

/* ── Tooltip ──────────────────────────────────────────────────────── */

.tooltip {
    position: fixed;
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius);
    padding: 12px 14px;
    font-size: 0.75rem;
    color: var(--text-primary);
    max-width: 360px;
    pointer-events: none;
    opacity: 0;
    z-index: 10000;
    transition: opacity 0.12s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    line-height: 1.5;
}
.tooltip.visible { opacity: 1; }

/* ── D3 graph nodes ───────────────────────────────────────────────── */

.graph-node { cursor: pointer; }
.graph-node-parent { cursor: default; }

/* ── Insight Cards in Explore ─────────────────────────────────────── */

.insights-section {
    margin-top: 16px;
}
.insights-list {
    display: grid;
    gap: 12px;
}
.insight-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px 18px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
}
.insight-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.insight-type {
    font-size: 0.66rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.insight-scores {
    font-size: 0.68rem;
    color: var(--text-dim);
    font-weight: 600;
}
.insight-title {
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.45;
}
.insight-hypothesis {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.65;
    margin-bottom: 8px;
}
.insight-evidence {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.6;
    margin-bottom: 8px;
    padding: 10px 12px;
    background: var(--bg-base);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--border);
}
.insight-experiment {
    color: var(--text-dim);
    font-size: 0.78rem;
    line-height: 1.55;
    margin-bottom: 6px;
}
.insight-impact {
    color: var(--green);
    font-size: 0.78rem;
    line-height: 1.55;
    font-style: italic;
}
.insight-label {
    font-weight: 700;
    color: var(--text-dim);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.insight-papers {
    margin: 4px 0 10px;
}

/* ── Paper Citation Links ─────────────────────────────────────────── */

.paper-cite {
    display: inline-block;
    padding: 2px 8px;
    margin: 2px 4px 2px 0;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid rgba(196,112,75,0.15);
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.15s;
    font-family: var(--font-mono);
}
.paper-cite:hover {
    background: rgba(196,112,75,0.15);
    border-color: rgba(196,112,75,0.3);
    color: #a85a32;
}

/* ── Responsive ───────────────────────────────────────────────────── */

@media (max-width: 1100px) {
    .topbar-stats { display: none; }
    .topbar-right { flex: 0 0 260px; }
    .stat-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
    .sidebar {
        position: fixed;
        left: 0; top: var(--topbar-h); bottom: 0;
        width: var(--sidebar-w-collapsed);
        z-index: 60;
    }
    .sidebar .nav-item span { opacity: 0; width: 0; }
    .sidebar .nav-item { justify-content: center; padding: 10px; }
    .sidebar .btn-pipeline span { opacity: 0; width: 0; }
    .sidebar .btn-pipeline { justify-content: center; padding: 8px; }

    .content { margin-left: var(--sidebar-w-collapsed); }

    .topbar-right { flex: 0 0 200px; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .summary-grid { grid-template-columns: 1fr; }
    .recently-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .sidebar { display: none; }
    .content { margin-left: 0; }
    header#topBar { padding: 0 12px; gap: 8px; }
    .topbar-right { flex: 1 1 auto; min-width: 0; }
    .tab-scroll { padding: 14px 12px 24px; }
}

/* ── Research Launch Buttons ──────────────────────────────────────── */

.insight-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}
.btn-research {
    background: #1a5c3a;
    color: #d4f0e0;
    border: 1px solid #2a7a50;
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}
.btn-research:hover {
    background: #247a4a;
    border-color: #44aa6a;
}
.btn-preview {
    background: transparent;
    color: #8a9aaa;
    border: 1px solid #2a3a4a;
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s;
}
.btn-preview:hover {
    color: #c0d0e0;
    border-color: #4a6a8a;
}

/* ── Proposal Preview Modal ──────────────────────────────────────── */

.proposal-modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.proposal-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
}
.proposal-content {
    position: relative;
    background: #0a1020;
    border: 1px solid #1a2a3a;
    border-radius: 12px;
    width: 85vw;
    max-width: 900px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.proposal-header {
    padding: 18px 24px;
    border-bottom: 1px solid #1a2a3a;
    position: relative;
}
.proposal-header h3 {
    font-size: 1.05rem;
    color: #e8f0f8;
    margin: 0 0 6px 0;
    padding-right: 40px;
}
.proposal-stats {
    font-size: 0.72rem;
    color: #6a7a8a;
}
.btn-close {
    position: absolute;
    top: 14px;
    right: 18px;
    background: none;
    border: none;
    color: #6a7a8a;
    font-size: 1.4rem;
    cursor: pointer;
}
.btn-close:hover {
    color: #ff6b6b;
}
.proposal-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
    font-size: 0.78rem;
    line-height: 1.7;
    color: #b0c0d0;
    word-wrap: break-word;
    font-family: var(--font-body);
}
.proposal-body h1, .proposal-body h2, .proposal-body h3, .proposal-body h4 {
    color: #e0e8f0;
    margin: 1.2em 0 0.5em;
}
.proposal-body h1 { font-size: 1.3em; }
.proposal-body h2 { font-size: 1.15em; }
.proposal-body h3 { font-size: 1.05em; }
.proposal-body ul, .proposal-body ol {
    padding-left: 1.5em;
    margin: 0.5em 0;
}
.proposal-body li { margin: 0.3em 0; }
.proposal-body p { margin: 0.6em 0; }
.proposal-body strong { color: #d0dce8; }
.proposal-body code {
    background: rgba(255,255,255,0.06);
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.92em;
}
.proposal-body blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1em;
    margin: 0.8em 0;
    color: #8a9ab0;
}
.proposal-footer {
    padding: 14px 24px;
    border-top: 1px solid #1a2a3a;
    display: flex;
    justify-content: flex-end;
}

/* ── Paradigm Score Badges ────────────────────────────────────── */
.paradigm-badge {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    letter-spacing: 0.03em;
}
.paradigm-badge.high {
    background: rgba(220, 60, 40, 0.15);
    color: #e05040;
    border: 1px solid rgba(220, 60, 40, 0.3);
}
.paradigm-badge.mid {
    background: rgba(200, 160, 40, 0.12);
    color: #c8a028;
    border: 1px solid rgba(200, 160, 40, 0.25);
}
.paradigm-badge.low {
    background: rgba(100, 120, 140, 0.1);
    color: #7a8a9a;
    border: 1px solid rgba(100, 120, 140, 0.2);
}
.insight-rationale {
    color: #8a9aaa;
    font-size: 0.75rem;
    font-style: italic;
    margin-bottom: 8px;
    line-height: 1.5;
}