:root{
  --bg: #0a1630;
  --panel: #111318;
  --panel2: #0f1116;
  --text: #e7e7ea;
  --muted: #a6a7ad;
  --line: rgba(255,255,255,0.10);
  --line2: rgba(255,255,255,0.16);
  --accent: #7dd3fc;
  --shadow: 0 10px 30px rgba(0,0,0,0.40);
  --radius: 18px;
  --radius2: 24px;
  --maxw: 1100px;
}

*{ 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, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 10% 0%, rgba(125,211,252,0.12), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(244,114,182,0.10), transparent 60%),
              linear-gradient(180deg, #081327 0%, #0a1b3a 100%);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration:none; }
a:hover{ color: var(--accent); }

.container{
  width: min(var(--maxw), calc(100% - 40px));
  margin: 0 auto;
}

.topbar{
  position: sticky;
  top:0;
  z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(11,12,16,0.65);
  border-bottom: 1px solid var(--line);
}

.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 0;
  gap: 16px;
}

.brand{
  font-weight: 700;
  letter-spacing: 0.2px;
}

.nav{
  display:flex;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}
.nav a{ padding: 6px 10px; border-radius: 999px; }
.nav a:hover{ background: rgba(255,255,255,0.06); color: var(--text); }

.hero{
  padding: 38px 0 18px;
  text-align: center;
}
.hero-full{
  position: relative;
  min-height: 86vh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow: hidden;
  padding: 80px 0 36px;
}
.hero-content{
  position: relative;
  z-index: 2;
}
.hero-bg{
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}
.hero-bg-video{
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05) brightness(0.55);
  transform: scale(1.02);
}
.hero-overlay{
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 500px at 20% 10%, rgba(0,0,0,0.2), transparent 70%),
    radial-gradient(900px 600px at 80% 20%, rgba(0,0,0,0.35), transparent 70%),
    linear-gradient(180deg, rgba(11,12,16,0.65), rgba(11,12,16,0.75));
  z-index: 1;
}
.title{
  font-size: clamp(34px, 4vw, 54px);
  margin: 14px 0 6px;
  letter-spacing: -0.4px;
}
.subtitle{
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 18px;
}
.authors{
  display:flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin: 10px 0 4px;
  justify-content: center;
}
.author{
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.03);
}
.affiliations{
  display:flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 14px;
  justify-content: center;
}

.icon-row{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 18px;
  justify-content: center;
}

.icon-btn{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  box-shadow: 0 1px 0 rgba(255,255,255,0.06) inset;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
  font-size: 14px;
}
.icon-btn:hover{
  transform: translateY(-1px);
  border-color: var(--line2);
  background: linear-gradient(180deg, rgba(125,211,252,0.10), rgba(255,255,255,0.03));
}
.icon{
  width: 18px;
  height: 18px;
  display:inline-block;
}
.icon-img{
  object-fit: contain;
}

.section{
  padding: 80px 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 1;
  background: transparent;
}
.after-hero{
  margin-top: 0;
  padding-top: 0;
}

.section-head{
  margin-bottom: 16px;
}
.section-head h2{
  margin: 0 0 6px;
  font-size: 26px;
  letter-spacing: -0.2px;
}
#generation .section-head h2{
  text-align: center;
}
#editing .section-head h2{
  text-align: center;
}
.muted{ color: var(--muted); }
.bullets{ margin: 10px 0 0 18px; color: var(--muted); }
#abstract .col.text p{ text-align: justify; }

.card{
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  box-shadow: var(--shadow);
  overflow:hidden;
}

.card-header{
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--line);
}
.card-title{ font-weight: 700; }
.card-subtitle{ color: var(--muted); font-size: 13px; margin-top: 2px; }
.card-body{ padding: 14px 16px; }

.teaser-video{
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #000;
}

.two-col{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}
@media (max-width: 900px){
  .two-col{ grid-template-columns: 1fr; }
}

.figure-card{
  margin:0;
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  background: rgba(0,0,0,0.18);
  overflow:hidden;
}
.figure-card img{
  width: 100%;
  display:block;
}
.figure-card figcaption{
  padding: 10px 12px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

.tabs{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0 14px;
}
.tab{
  cursor:pointer;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  transition: background .15s ease, border-color .15s ease;
  font-size: 14px;
}
.tab:hover{ border-color: var(--line2); }
.tab.active{
  border-color: rgba(125,211,252,0.35);
  background: rgba(125,211,252,0.12);
}

.tabpane{ display:none; }
.tabpane.active{ display:block; }

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

/* Masonry-like packing for mixed aspect ratios (no large row gaps). */
#imageEditGrid,
#imageEditGrid.grid{
  display: block !important;
  column-count: 3;
  column-gap: 14px;
}

#imageEditGrid .media-card{
  display: inline-block;
  width: 100%;
  margin: 0 0 14px;
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
}

@media (max-width: 1000px){
  .grid{ grid-template-columns: repeat(2, 1fr); }
  #imageEditGrid{ column-count: 2; }
}
@media (max-width: 650px){
  .grid{ grid-template-columns: 1fr; }
  #imageEditGrid{ column-count: 1; }
}

.media-card{
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  overflow:hidden;
  background: rgba(0,0,0,0.20);
  position: relative;
  transition: border-color .15s ease, transform .15s ease;
}
.media-card:hover{
  border-color: rgba(125,211,252,0.35);
  transform: translateY(-1px);
}

.media{
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display:block;
  background:#000;
}

.media-meta{
  border-top: 1px solid var(--line);
  padding: 10px 12px;
}
.media-meta .label{
  font-weight: 650;
  font-size: 13px;
}
.media-meta .sub{
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.info-btn{
  position:absolute;
  top: 10px;
  right: 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.35);
  color: var(--text);
  width: 34px;
  height: 34px;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.info-btn:hover{ border-color: rgba(125,211,252,0.35); }

.stack{
  display:flex;
  flex-direction:column;
  gap: 14px;
}

#inContextGenStack{
  display:grid;
  grid-template-columns: repeat(2, minmax(460px, 1fr));
  gap: 14px;
  align-items: start;
}
@media (max-width: 1100px){
  #inContextGenStack{
    grid-template-columns: 1fr;
  }
}

.ctx-card{
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  padding: 14px;
  background: rgba(0,0,0,0.20);
  transition: border-color .15s ease;
}
.ctx-card:hover{ border-color: rgba(125,211,252,0.35); }

.ctx-card-compact{
  width: fit-content;
  max-width: 100%;
  justify-self: start;
}

.ctx-card-compact .ctx-top{
  grid-template-columns: max-content max-content;
}

.ctx-card-compact .ctx-output{
  width: fit-content;
}

.ctx-top{
  display:grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 8px;
  align-items:start;
}
@media (max-width: 900px){
  .ctx-top{ grid-template-columns: 1fr; }
}

.ctx-refgrid{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ctx-refgrid img{
  width: 150px;
  max-width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
  background:#000;
}

.ctx-edit-top{
  grid-template-columns: minmax(0, 1fr) max-content minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.ctx-edit-col{
  min-width: 0;
}

.ctx-edit-video video{
  width: 100%;
}

.ctx-refgrid-single{
  display: flex;
  justify-content: center;
}

.ctx-refgrid-single img{
  width: 140px;
  aspect-ratio: 1/1;
  object-fit: cover;
}

.ctx-output video, .ctx-output img{
  width: 100%;
  min-width: 0;
  border-radius: 14px;
  border: 1px solid var(--line);
  background:#000;
  display:block;
  height: auto;
}
.ctx-card-compact .ctx-output video,
.ctx-card-compact .ctx-output img{
  width: clamp(220px, 24vw, 300px);
}
@media (max-width: 900px){
  .ctx-card-compact .ctx-top{
    grid-template-columns: 1fr;
  }
  .ctx-card-compact .ctx-output{
    width: 100%;
  }
  .ctx-card-compact .ctx-output video,
  .ctx-card-compact .ctx-output img{
    width: 100%;
  }
  .ctx-edit-top{
    grid-template-columns: 1fr;
    align-items: start;
  }
  .ctx-refgrid-single{
    justify-content: flex-start;
  }
}

.ctx-instruction{
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 13px;
}

.filters{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}
.filter-btn{
  cursor:pointer;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 13px;
}
.filter-btn.active{
  border-color: rgba(125,211,252,0.35);
  background: rgba(125,211,252,0.12);
}

.video-block{
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  background: rgba(0,0,0,0.20);
  padding: 12px;
  transition: border-color .15s ease, transform .15s ease;
}
.video-block:hover{
  border-color: rgba(125,211,252,0.35);
  transform: translateY(-1px);
}
.video-pair{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 900px){
  .video-pair{ grid-template-columns: 1fr; }
}
.video-pair video{
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  background:#000;
}
.block-caption{
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}

/* Image compare slider */
.compare{
  position: relative;
  width: 100%;
  border-radius: var(--radius2);
  overflow: hidden;
  border: 1px solid var(--line);
  background:#000;
}
.compare img{
  width: 100%;
  display:block;
  aspect-ratio: auto;
  object-fit: contain;
}

/* Ensure editing compare images keep native ratio (avoid 1:1 crop from stale/overridden rules) */
#edit-img .compare img{
  aspect-ratio: auto !important;
  height: auto !important;
  object-fit: initial !important;
}
.compare .after{
  position:absolute;
  inset:0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  clip-path: inset(0 0 0 50%);
}
.compare .handle{
  position:absolute;
  top:0; bottom:0;
  left:50%;
  width:2px;
  background: rgba(125,211,252,0.75);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.35);
}
.compare .range{
  position:absolute;
  inset:auto 12px 12px 12px;
  width: calc(100% - 24px);
  accent-color: var(--accent);
}

/* Prompt tooltip */
.prompt-tooltip{
  position: fixed;
  inset: auto 18px 18px auto;
  width: min(520px, calc(100% - 36px));
  display:none;
  z-index: 100;
}
.prompt-tooltip.show{ display:block; }
.prompt-tooltip-inner{
  border: 1px solid var(--line2);
  border-radius: var(--radius2);
  background: rgba(15,17,22,0.92);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  padding: 12px 14px 14px;
  position: relative;
}
.prompt-tooltip-title{
  font-weight: 700;
  margin-bottom: 6px;
}
.prompt-tooltip-text{
  color: var(--muted);
  font-size: 13px;
  white-space: pre-wrap;
}
.prompt-tooltip-close{
  position:absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.30);
  color: var(--text);
  cursor:pointer;
}
.prompt-tooltip-close:hover{ border-color: rgba(125,211,252,0.35); }

.table-wrap{
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  overflow:hidden;
  background: rgba(0,0,0,0.20);
}
.perf-table{
  width:100%;
  border-collapse: collapse;
}
.perf-table th, .perf-table td{
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align:left;
}
.perf-table thead th{
  background: rgba(255,255,255,0.04);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.2px;
}
.perf-table tbody td{
  font-size: 14px;
}

.footer{
  padding: 28px 0 46px;
}
.footer-inner{
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.brand,
.title{
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-icon{
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.title-icon{
  width: clamp(34px, 4.5vw, 52px);
  height: clamp(34px, 4.5vw, 52px);
  object-fit: contain;
}

.title-logo{
  width: min(420px, 70vw);
  height: auto;
  display: block;
}