/* ─── Reset & base ───────────────────────────────────────────────────────── */

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

:root {
  --bg:        #f0a020;
  --surface:   #fff9ec;
  --surface-2: rgba(44, 26, 6, 0.06);
  --surface-3: rgba(44, 26, 6, 0.11);
  --border:    rgba(44, 26, 6, 0.18);
  --border-2:  rgba(44, 26, 6, 0.30);

  --accent:    #2c1a06;
  --accent-dim:  rgba(44, 26, 6, 0.10);
  --accent-glow: rgba(44, 26, 6, 0.05);

  --text:      #2c1a06;
  --text-2:    #6b4020;
  --text-3:    #a06830;

  --gold:      #b06c00;
  --gold-dim:  rgba(176, 108, 0, 0.14);
  --green:     #166534;
  --green-dim: rgba(22, 101, 52, 0.12);
  --bronze:    #9a3412;
  --bronze-dim: rgba(154, 52, 18, 0.12);
  --closed:    #374151;
  --closed-dim: rgba(55, 65, 81, 0.12);

  --radius:    10px;
  --radius-sm: 6px;
  --sidebar-w: 250px;
  --font-fallback: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font:      'Inter', var(--font-fallback);
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

html { font-size: 14px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--text); text-decoration: underline; text-underline-offset: 2px; }
a:hover { opacity: 0.7; }

button { cursor: pointer; font-family: inherit; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

.hidden { display: none !important; }

/* ─── Layout ─────────────────────────────────────────────────────────────── */

.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

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

.sidebar {
  grid-column: 1;
  grid-row: 1 / -1;
  background: var(--bg);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}

/* Floating vertical divider — doesn't touch top or bottom */
.sidebar::after {
  content: '';
  position: absolute;
  right: 0;
  top: 52px;
  bottom: 52px;
  width: 1px;
  background: var(--border-2);
  pointer-events: none;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.sidebar-header {
  padding: 20px 18px 12px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  cursor: pointer;
}

.sidebar-logo svg, .sidebar-logo img { color: var(--text); flex-shrink: 0; }

.sidebar-subtitle {
  font-size: 0.65rem;
  color: var(--text-3);
  margin-top: 3px;
  padding-left: 28px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar-search { padding: 8px 10px 4px; }

.sidebar-search-wrap { position: relative; }

.sidebar-search-icon {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
}

.sidebar-search-input {
  width: 100%;
  background: rgba(44, 26, 6, 0.07);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 7px 10px 7px 28px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
}

.sidebar-search-input:focus {
  border-color: var(--border-2);
  background: rgba(44, 26, 6, 0.10);
}

.sidebar-search-input::placeholder { color: var(--text-3); }

.sidebar-section-label {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 20px 18px 6px;
}

.topic-list {
  flex: 1;
  padding: 4px 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.topic-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-2);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-align: left;
  width: 100%;
  transition: background 0.12s, color 0.12s, box-shadow 0.12s;
  gap: 8px;
}

.topic-pill:hover {
  background: rgba(44, 26, 6, 0.09);
  color: var(--text);
}

.topic-pill.active {
  background: transparent;
  color: var(--text);
  box-shadow: inset 2px 0 0 var(--text);
  font-weight: 700;
}

.topic-pill-label { flex: 1; min-width: 0; }

.topic-badge {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-3);
  background: rgba(44, 26, 6, 0.1);
  padding: 1px 6px;
  border-radius: 4px;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.topic-pill.active .topic-badge {
  background: rgba(44, 26, 6, 0.15);
  color: var(--text);
}

/* Journals nav fills remaining space */
#journalList  { flex: 1; }
#newsList     { flex: none; }

.sidebar-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.sidebar-link {
  font-size: 0.68rem;
  color: var(--text-3);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  transition: color 0.12s;
}
.sidebar-link:hover { color: var(--text); opacity: 1; text-decoration: none; }

/* ─── Mobile header ──────────────────────────────────────────────────────── */

.mobile-header {
  display: none;
  grid-column: 1 / -1;
  grid-row: 1;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--text-2);
  padding: 4px;
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
}

.sidebar-toggle:hover { background: rgba(44, 26, 6, 0.09); }

.mobile-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

.main {
  grid-column: 2;
  grid-row: 1 / -1;
  min-height: 100vh;
  overflow: auto;
}

/* ─── Welcome ────────────────────────────────────────────────────────────── */

.welcome {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  min-height: 100vh;
  overflow: hidden;
}

/* Brain / city-map SVG — upper-right */
.welcome-svg {
  position: absolute;
  top: clamp(-15vh, calc(6vh + (100vw - 1200px) * 0.5), 6vh);
  right: -6%;
  width: min(72%, 740px);
  opacity: 1;
  /* mask applied dynamically by JS when brain overlaps text */
}

/* Content — bottom left */
.welcome-content {
  position: relative;
  z-index: 1;
  padding: 0 56px 72px 64px;
}

.welcome-eyebrow {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-2);
  margin-bottom: 16px;
}

.welcome h1 {
  font-size: clamp(3.4rem, 6.5vw, 6.2rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}

.welcome-tagline {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ─── Topic view ─────────────────────────────────────────────────────────── */

.topic-view {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.topic-header {
  padding: 24px 28px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.topic-title {
  font-size: 1.4rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text);
  letter-spacing: -0.01em;
}

.topic-meta {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 4px;
}

.refresh-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 0.75rem;
  padding: 5px 10px;
  flex-shrink: 0;
  transition: color 0.12s, background 0.12s, border-color 0.12s;
}

.refresh-btn:hover {
  background: rgba(44, 26, 6, 0.08);
  color: var(--text);
  border-color: var(--text-2);
}

.refresh-btn.spinning svg {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ─── Controls bar ───────────────────────────────────────────────────────── */

.controls-bar {
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(240, 160, 32, 0.90);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 10;
}

.controls-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  flex: 1;
}

.search-wrap {
  position: relative;
  flex: 1;
  min-width: 180px;
  max-width: 320px;
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
}

.filter-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.875rem;
  padding: 7px 12px 7px 32px;
  font-family: inherit;
  transition: border-color 0.15s, background 0.15s;
  outline: none;
}

.filter-input:focus {
  border-color: var(--text);
  background: rgba(255, 255, 255, 0.75);
}
.filter-input::placeholder { color: var(--text-3); }

.time-select {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.875rem;
  padding: 7px 10px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s;
}

.time-select:focus { border-color: var(--text); }

/* Sort area (chips + info button) */
.sort-area {
  display: flex;
  align-items: center;
  gap: 7px;
}

.triage-info-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.50);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.12s;
}

.triage-info-btn:hover {
  background: rgba(255, 255, 255, 0.85);
  color: var(--text);
  border-color: var(--text);
}

/* Segmented sort control */
.sort-chips {
  display: flex;
  gap: 0;
}

.sort-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.40);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: 0;
  transition: all 0.12s;
  white-space: nowrap;
  position: relative;
  margin-right: -1px;
}

.sort-chip:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.sort-chip:last-child  { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-right: 0; }

.sort-chip:disabled {
  opacity: 0.4;
  cursor: default;
}

.sort-chip:hover {
  background: rgba(255, 255, 255, 0.65);
  color: var(--text);
  z-index: 1;
}

.sort-chip.active {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
  z-index: 1;
}

/* ─── Results bar ────────────────────────────────────────────────────────── */

.results-bar {
  padding: 10px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.results-count {
  font-size: 0.78rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.oa-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
}

.oa-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  outline: 1px solid rgba(44, 26, 6, 0.2);
}

.oa-dot.gold   { background: var(--gold); }
.oa-dot.green  { background: var(--green); }
.oa-dot.bronze { background: var(--bronze); }
.oa-dot.closed { background: var(--closed); }

/* ─── Paper list ─────────────────────────────────────────────────────────── */

.paper-list {
  padding: 10px 28px 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ─── Paper card ─────────────────────────────────────────────────────────── */

.paper-card {
  background: transparent;
  border-bottom: 1px solid var(--border-2);
  padding: 18px 20px;
  position: relative;
}

.paper-card:first-child {
  border-top: 1px solid var(--border-2);
}

.paper-card:hover {
  background: rgba(44, 26, 6, 0.04);
}

.paper-header { margin-bottom: 8px; }

.paper-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 5px;
}

.paper-title a {
  color: inherit;
  text-decoration: none;
}

.paper-title a:hover { color: var(--text-2); }

.paper-byline {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.4;
}

.paper-byline-authors { color: var(--text-2); }

/* Badges row */
.paper-badges {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.badge-citations {
  background: rgba(44, 26, 6, 0.08);
  color: var(--text);
  border: 1px solid var(--border);
}

.badge-altmetric {
  background: rgba(176, 108, 0, 0.10);
  color: var(--gold);
  border: 1px solid rgba(176, 108, 0, 0.22);
}

.badge-influential {
  background: rgba(109, 40, 217, 0.08);
  color: #6d28d9;
  border: 1px solid rgba(109, 40, 217, 0.20);
}

.badge-oa {
  background: rgba(22, 101, 52, 0.09);
  color: var(--green);
  border: 1px solid rgba(22, 101, 52, 0.22);
}

.badge-oa.bronze {
  background: rgba(154, 52, 18, 0.09);
  color: var(--bronze);
  border: 1px solid rgba(154, 52, 18, 0.22);
}

.badge-oa.gold {
  background: rgba(176, 108, 0, 0.09);
  color: var(--gold);
  border: 1px solid rgba(176, 108, 0, 0.22);
}

/* Topics */
.paper-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 10px;
}

.topic-tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 4px;
}

/* Links row */
.paper-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.paper-link {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.12s;
}

.paper-link:hover { color: var(--text); text-decoration: none; opacity: 1; }

.paper-link.primary {
  color: var(--text);
}

.paper-link.primary:hover { color: var(--text-2); }

.paper-link-sep { color: var(--border-2); }

/* Abstract toggle */
.abstract-toggle {
  background: none;
  border: none;
  color: var(--text-3);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0;
  margin-left: auto;
  transition: color 0.12s;
}

.abstract-toggle:hover { color: var(--text); }

.abstract-toggle svg { transition: transform 0.2s; }
.abstract-toggle.open svg { transform: rotate(180deg); }

.paper-abstract {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.65;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: none;
}

.paper-abstract.visible { display: block; }

/* ─── Skeleton loading ───────────────────────────────────────────────────── */

@keyframes shimmer {
  0%   { background-position: -800px 0; }
  100% { background-position: 800px 0; }
}

.skeleton-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-2);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.skeleton-line {
  border-radius: 4px;
  background: linear-gradient(
    90deg,
    rgba(44,26,6,0.07) 25%,
    rgba(44,26,6,0.13) 50%,
    rgba(44,26,6,0.07) 75%
  );
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite;
}

.sk-title   { height: 16px; width: 80%; margin-bottom: 8px; }
.sk-title-2 { height: 16px; width: 55%; margin-bottom: 12px; }
.sk-meta    { height: 11px; width: 60%; margin-bottom: 6px; }
.sk-meta-2  { height: 11px; width: 40%; margin-bottom: 14px; }
.sk-badges  { height: 22px; width: 35%; }

/* ─── No results ─────────────────────────────────────────────────────────── */

.no-results {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-3);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ─── Error state ────────────────────────────────────────────────────────── */

.error-banner {
  margin: 16px 28px;
  padding: 12px 16px;
  background: rgba(154, 52, 18, 0.10);
  border: 1px solid rgba(154, 52, 18, 0.28);
  border-radius: var(--radius-sm);
  color: var(--bronze);
  font-size: 0.85rem;
}

/* ─── AI Triage modal ────────────────────────────────────────────────────── */

.triage-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(44, 26, 6, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.triage-modal-card {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  max-width: 440px;
  width: 100%;
  position: relative;
  box-shadow: 0 8px 32px rgba(44, 26, 6, 0.18);
}

.triage-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  font-size: 0.85rem;
  color: var(--text-3);
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  transition: all 0.12s;
}
.triage-modal-close:hover { background: var(--surface-2); color: var(--text); }

.triage-modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}

.triage-sort-section {
  padding: 12px 0;
  border-top: 1px solid var(--border);
}

.triage-sort-section:last-child { padding-bottom: 0; }

.triage-sort-heading {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text);
  margin-bottom: 5px;
}

.triage-sort-body {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.55;
}

/* ─── Loading overlay ────────────────────────────────────────────────────── */

.loading-state {
  padding: 0 28px 28px;
}

.loading-header {
  padding: 16px 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-3);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.loading-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border-2);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
  vertical-align: middle;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Small spinner variant — for inline button use */
.loading-spinner--sm {
  width: 10px;
  height: 10px;
  border-width: 1.5px;
}

/* Spinner inside an active (dark-bg) sort chip — keep it readable */
.sort-chip.active .loading-spinner {
  border-color: rgba(240, 160, 32, 0.35);
  border-top-color: var(--bg);
}

/* AI Triage loading banner — sits above paper list */
.triage-loading-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 28px 10px;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(44, 26, 6, 0.03);
  color: var(--text-3);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

@media (max-width: 768px) {
  .triage-loading-banner { margin-left: 16px; margin-right: 16px; }
}

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

.main { scrollbar-width: thin; scrollbar-color: var(--border-2) transparent; }
.main::-webkit-scrollbar { width: 5px; }
.main::-webkit-scrollbar-track { background: transparent; }
.main::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

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

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .mobile-header { display: flex; }

  .sidebar {
    grid-column: 1;
    grid-row: 1;
    position: fixed;
    top: 0;
    left: -100%;
    width: 260px;
    height: 100vh;
    z-index: 200;
    transition: left 0.25s ease;
    box-shadow: 4px 0 24px rgba(44, 26, 6, 0.25);
  }

  .sidebar.open { left: 0; }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(44, 26, 6, 0.40);
    z-index: 199;
  }

  .sidebar-overlay.visible { display: block; }

  .main {
    grid-column: 1;
    grid-row: 2;
  }

  .topic-header, .controls-bar, .results-bar, .paper-list, .loading-state {
    padding-left: 16px;
    padding-right: 16px;
  }

  .controls-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .controls-left { flex-direction: column; }

  .search-wrap { max-width: 100%; }

  .sort-chips { flex-wrap: wrap; }

  .oa-legend { display: none; }

  .welcome-svg {
    width: min(80%, 380px);
    top: 16px;
    right: -8%;
    /* mask applied dynamically by JS */
  }

  .welcome-content {
    padding: 0 24px 52px 24px;
  }
}

@media (max-width: 480px) {
  .paper-card { padding: 14px; }
  .sort-chip  { font-size: 0.7rem; padding: 4px 10px; }
}

/* ─── News card ──────────────────────────────────────────────────────────── */

.news-card {
  background: transparent;
  border-bottom: 1px solid var(--border-2);
  padding: 18px 20px;
  position: relative;
}

.news-card:first-child {
  border-top: 1px solid var(--border-2);
}

.news-card:hover {
  background: rgba(44, 26, 6, 0.04);
}

.news-outlet {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.4;
  margin-top: 5px;
}

.news-description {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ─── News view: hide time selector and paper-only sort chips ────────────── */

#topicView.news-view .time-select-wrap { display: none; }
#topicView.news-view .sort-chip[data-sort="journal-if"],
#topicView.news-view .sort-chip[data-sort="relevance"] { display: none; }
#topicView.news-view .triage-info-btn { display: none; }

/* ─── Reading list pill ──────────────────────────────────────────────────── */
.topic-pill.reading-list-pill { color: var(--text); }
.topic-pill.reading-list-pill:hover { background: rgba(44, 26, 6, 0.09); }
.topic-pill.reading-list-pill.active {
  background: transparent;
  color: var(--text);
  box-shadow: inset 2px 0 0 var(--text);
}

/* ─── News card action buttons ───────────────────────────────────────────── */

.news-card { overflow: visible; }

.news-card-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  float: right;
  margin-left: 10px;
  margin-top: 2px;
}

.btn-bookmark,
.btn-dismiss {
  background: none;
  border: none;
  padding: 3px 5px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.12s, background 0.12s;
}

.btn-bookmark:hover {
  color: var(--text);
  background: rgba(44, 26, 6, 0.08);
}

.btn-bookmark.bookmarked {
  color: var(--text);
}

.btn-bookmark.bookmarked:hover {
  color: var(--bronze);
}

.btn-dismiss {
  font-size: 1.1rem;
  font-weight: 400;
}

.btn-dismiss:hover {
  color: var(--bronze);
  background: rgba(154, 52, 18, 0.10);
}

/* ─── Reading list view ──────────────────────────────────────────────────── */

.reading-list-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.reading-list-action-btn {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 5px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  transition: background 0.12s, color 0.12s;
}

.reading-list-action-btn:hover {
  background: rgba(255, 255, 255, 0.80);
  color: var(--text);
}

.reading-list-action-btn.danger:hover {
  color: var(--bronze);
  border-color: rgba(154, 52, 18, 0.35);
  background: rgba(154, 52, 18, 0.08);
}

.reading-list-empty {
  padding: 48px 28px;
  text-align: center;
  color: var(--text-3);
  font-size: 0.82rem;
  line-height: 1.6;
}

/* ─── New-since-last-visit dot ───────────────────────────────────────────── */

.topic-pill.has-new .topic-pill-label::after {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-left: 6px;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ─── Reading notes ──────────────────────────────────────────────────────── */

.note-wrap { margin-top: 8px; }

.reading-note {
  width: 100%; min-height: 52px;
  background: rgba(44,26,6,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit; font-size: 0.8rem;
  color: var(--text); padding: 6px 8px;
  resize: vertical;
}
.reading-note:focus { outline: none; border-color: var(--text-3); }
.reading-note::placeholder { color: var(--text-3); }

/* ─── AI Digest banner ───────────────────────────────────────────────────── */

.digest-banner {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin: 0 28px 12px;
  overflow: hidden;
}
.digest-toggle {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 9px 14px;
  background: rgba(44,26,6,0.04);
  border: none; cursor: pointer;
  font-size: 0.75rem; font-weight: 600;
  color: var(--text-2); text-align: left;
  font-family: inherit;
}
.digest-toggle:hover { background: rgba(44,26,6,0.08); color: var(--text); }
.digest-chevron { margin-left: auto; transition: transform 0.2s; }
.digest-toggle[aria-expanded="true"] .digest-chevron { transform: rotate(180deg); }
.digest-body { padding: 12px 14px 14px; }
.digest-text { font-size: 0.85rem; line-height: 1.6; color: var(--text); margin: 0 0 8px; white-space: pre-wrap; }
.digest-meta { font-size: 0.7rem; color: var(--text-3); margin: 0; }

@media (max-width: 768px) {
  .digest-banner { margin-left: 16px; margin-right: 16px; }
}