/* =========================
   Diffusion Lighthouse — UI
   ========================= */

:root{
  --bg:#0b0f14;
  --panel:#0f1623;
  --panel-soft:#0b1220;
  --text:#e6eaf2;
  --muted:#9aa7bd;
  --border:#223049;
  --chip:#111b2f;
  --link:#9bd2ff;

  --shadow-lg: 0 10px 30px rgba(0,0,0,.25);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.2);

  --radius-lg:16px;
  --radius-md:12px;
}

/* Reset */
*{ box-sizing:border-box }
html,body{ height:100% }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background:
    radial-gradient(1000px 600px at 15% -10%, rgba(80,120,255,.18), transparent 55%),
    radial-gradient(900px 500px at 85% -15%, rgba(0,255,210,.10), transparent 50%),
    var(--bg);
  color:var(--text);
  line-height:1.45;
}

/* =========================
   Layout
   ========================= */

.container{
  max-width:1100px;
  margin:0 auto;
  padding:20px;
}

header{
  position:sticky;
  top:0;
  z-index:10;
  background: linear-gradient(
    rgba(11,15,20,.98),
    rgba(11,15,20,.82)
  );
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}

.hero{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  padding:10px 0 6px;
}

/* =========================
   Branding
   ========================= */

.brandRow{
  display:flex;
  align-items:flex-start;
  gap:12px;
}

.logo{
  width:48px;
  height:48px;
  flex-shrink:0;
  border-radius:14px;
  border:1px solid var(--border);
  background: rgba(15,22,35,.65);
  box-shadow: var(--shadow-sm);
  object-fit:contain;
}

.brand h1{
  margin:0;
  font-size:26px;
  letter-spacing:.2px;
  line-height:1.15;
}

.brand p{
  margin:6px 0 0;
  color:var(--muted);
  font-size:14px;
  line-height:1.35;
}

.brandRow p{
  margin:4px 0 0;
  color:var(--muted);
  font-size:13px;
}

/* =========================
   Subnav (Index / Editorial Policy)
   ========================= */

.subnav{
  display:flex;
  gap:10px;
  align-items:center;
  margin-top:10px;
  margin-bottom:4px;
}

.subnavLink{
  display:inline-flex;
  align-items:center;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--muted);
  text-decoration:none;
  background: transparent;
  font-size:13px;
}

.subnavLink:hover{
  border-color: rgba(155,210,255,.35);
  color: var(--text);
  background: rgba(15,22,35,.35);
  text-decoration:none;
}

.subnavLink.active{
  border-color: rgba(155,210,255,.35);
  color: var(--text);
  background: rgba(15,22,35,.55);
}

/* =========================
   KPIs / Pills
   ========================= */

.kpis{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.kpi{
  border:1px solid var(--border);
  background: rgba(15,22,35,.7);
  border-radius:999px;
  padding:6px 10px;
  font-size:12px;
  color:var(--muted);
}

/* =========================
   Controls
   ========================= */

.controls{
  margin:14px 0 12px;
  display:grid;
  grid-template-columns: 1fr 220px 220px 180px auto;
  gap:10px;
}

@media (max-width: 900px){
  .controls{
    grid-template-columns:1fr 1fr;
  }
}

input,
select,
button{
  padding:10px 12px;
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  background: rgba(15,22,35,.75);
  color:var(--text);
  outline:none;
}

input::placeholder{
  color:rgba(154,167,189,.75);
}

input:focus,
select:focus{
  border-color: rgba(155,210,255,.55);
  box-shadow: 0 0 0 4px rgba(155,210,255,.10);
}

button{
  cursor:pointer;
  background: linear-gradient(
    180deg,
    rgba(155,210,255,.18),
    rgba(15,22,35,.75)
  );
}

button:hover{
  border-color: rgba(155,210,255,.55);
}

/* =========================
   Main list
   ========================= */

main{
  padding-top:14px;
}

.list{
  display:grid;
  gap:12px;
  margin-top:14px;
}

/* =========================
   Paper cards
   ========================= */

.card{
  border:1px solid var(--border);
  background: linear-gradient(
    180deg,
    rgba(15,22,35,.82),
    rgba(11,18,32,.72)
  );
  border-radius:var(--radius-lg);
  padding:12px 12px 10px;
  box-shadow: var(--shadow-lg);
  transition:
    transform .12s ease,
    border-color .12s ease;
}

.card:hover{
  transform: translateY(-1px);
  border-color: rgba(155,210,255,.40);
}

.cardTop{
  display:flex;
  justify-content:space-between;
  gap:12px;
}

.card h2{
  margin:0;
  font-size:17px;
  line-height:1.25;
}

/* =========================
   Metadata & chips
   ========================= */

.smallMeta{
  color:var(--muted);
  font-size:12px;
  margin-top:4px;
  line-height:1.35;
}

.badgeRow{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:8px;
}

.chip{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border:1px solid var(--border);
  background: rgba(17,27,47,.85);
  border-radius:999px;
  font-size:12px;
  color:var(--muted);
  white-space:nowrap;
}

/* =========================
   Links & description
   ========================= */

.links{
  margin-top:8px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

a{
  color:var(--link);
  text-decoration:none;
}

a:hover{
  text-decoration:underline;
}

.why{
  margin-top:8px;
  color: rgba(230,234,242,.92);
  line-height:1.45;
  font-size:13px;
}

/* =========================
   Footer
   ========================= */

.footer{
  border-top:1px solid var(--border);
  margin-top:22px;
  padding-top:14px;
  font-size:12px;
  color:var(--muted);
}

code{
  color:#c7d2fe;
}

/* =========================
   Cite button + modal
   ========================= */

.cardActions{
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.citeBtn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 10px;
  border-radius:12px;
  border:1px solid var(--border);
  background: rgba(15,22,35,.2);
  color:var(--text);
  cursor:pointer;
  line-height: 1;
}

.citeBtn:hover{
  border-color: rgba(155,210,255,.55);
}

.citeIcon{
  width:16px;
  height:16px;
}

/* Modal */
.modal{
  position: fixed;
  inset: 0;
  display: none;
  z-index: 50;
}

.modal[aria-hidden="false"]{
  display: block;
}

.modalOverlay{
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(6px);
}

.modalPanel{
  position: relative;
  max-width: 820px;
  margin: 8vh auto;
  background: linear-gradient(180deg, rgba(15,22,35,.95), rgba(11,18,32,.92));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 14px;
}

.modalHeader{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 10px;
}

.modalTitle{
  font-size: 16px;
  font-weight: 700;
}

.modalSubtitle{
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.iconBtn{
  border: 1px solid var(--border);
  background: rgba(15,22,35,.75);
  color: var(--text);
  border-radius: 10px;
  padding: 6px 10px;
  cursor: pointer;
}

.iconBtn:hover{
  border-color: rgba(155,210,255,.55);
}

.bibtexBox{
  width: 100%;
  min-height: 280px;
  resize: vertical;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(10,16,28,.8);
  color: var(--text);
  padding: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.4;
}

.modalActions{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-top: 10px;
}

.ghostBtn{
  background: rgba(15,22,35,.2);
}

.linkBtn{
  display: inline-flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(15,22,35,.2);
  color: var(--text);
  text-decoration: none;
  line-height: 1.2;
  font-size: 13px;
  box-sizing: border-box;
}

.linkBtn:hover{
  border-color: rgba(155,210,255,.55);
  text-decoration: none;
}

.modalFootnote{
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

.links{
  margin-top:10px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  align-items:center;
}

/* Make link-actions consistent (anchors + buttons) */
.links a,
.links button.linkAction{
  display:inline-flex;
  align-items:center;
  gap:6px;

  padding:0;
  border:0;
  background:transparent;
  color:var(--link);
  font: inherit;
  cursor:pointer;
}

.links a:hover,
.links button.linkAction:hover{
  text-decoration:underline;
}

.links .citeIcon{
  width:15px;
  height:15px;
  opacity: .95;
  transform: translateY(1px);
}

.section{
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.sectionTitle{
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
  letter-spacing: .2px;
}

.relations{
  display: grid;
  gap: 8px;
}

.relationItem{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  color: var(--text);
  font-size: 13px;
}

.relationType{
  display:inline-flex;
  align-items:center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(17,27,47,.55);
  color: var(--muted);
  font-size: 12px;
}

.relationLink{
  color: var(--link);
  cursor: pointer;
  text-decoration: none;
}

.relationLink:hover{
  text-decoration: underline;
}

.brand{
  position:relative;
}

.brand::before{
  content:"";
  position:absolute;
  inset:-12px;
  background: radial-gradient(400px 200px at 0% 0%, rgba(155,210,255,.08), transparent 60%);
  z-index:-1;
}

/* =========================
   FINAL: Make PDF/DOI/PDF-like pills match Cite/Details sizing exactly
   (this targets runtime <a class="linkBtn"> inside cards/modals)
   ========================= */

.cardActions a.linkBtn,
#paperLinks a.linkBtn{
  padding: 8px 10px !important;
  border-radius: 12px !important;
  line-height: 1 !important;
  font-size: 13px !important;
  display: inline-flex !important;
  align-items: center !important;
  box-sizing: border-box !important;
}


.relationsPreview {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.relChip {
  display: inline-flex;
  gap: 6px;
  align-items: baseline;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  font-size: 13px;
}

.relType {
  opacity: 0.85;
  font-weight: 600;
}