/* ===========================================================
   MASCOT — Warm Companion Design System
   =========================================================== */

:root {
  /* Purple base — headings, links */
  --primary-1: #7c5cff;
  --primary-2: #9d4edd;
  /* Warm coral / amber — hero, CTAs, accents */
  --coral-1: #ff6b6b;
  --coral-2: #ff8e53;
  --amber: #f59e0b;
  /* Teal — metrics / results */
  --teal-1: #06b6d4;
  --teal-2: #14b8a6;

  --ink: #1f2937;
  --ink-soft: #5b6472;
  --line-soft: #ece6f5;
  --tint: #fdf7f4;          /* warm page tint */
  --tint-2: #f6f2ff;        /* cool purple tint */

  --radius-card: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 6px 18px rgba(31, 41, 55, 0.08);
  --shadow-card-hover: 0 16px 38px rgba(124, 92, 255, 0.22);
  --transition-lift: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;

  --container-max: 1080px;
  --nav-height: 60px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 16px);
}

body {
  font-family: 'Noto Sans', sans-serif;
  color: var(--ink);
}

.title, .subtitle, h1, h2, h3, h4, h5 {
  font-family: 'Google Sans', 'Noto Sans', sans-serif;
}

/* ---------- gradient text helper ---------- */
.grad-text {
  background: linear-gradient(135deg, var(--primary-1), var(--coral-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===========================================================
   STICKY NAV
   =========================================================== */
.topnav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(31, 41, 55, 0.07);
}

.topnav .nav-inner {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topnav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Google Sans', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .5px;
}

.topnav .brand img { height: 30px; width: auto; }

.topnav .links {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.topnav .links a {
  position: relative;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  padding: 4px 0;
  transition: color .2s ease;
}

.topnav .links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--primary-1), var(--coral-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}

.topnav .links a:hover,
.topnav .links a.is-active { color: var(--ink); }
.topnav .links a:hover::after,
.topnav .links a.is-active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--ink);
  cursor: pointer;
}

/* ===========================================================
   HERO
   =========================================================== */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(820px circle at 15% 0%, rgba(124, 92, 255, 0.18), transparent 60%),
    radial-gradient(680px circle at 92% 12%, rgba(255, 142, 83, 0.20), transparent 62%),
    radial-gradient(760px circle at 55% 105%, rgba(20, 184, 166, 0.16), transparent 64%),
    linear-gradient(180deg, #ffffff 0%, var(--tint) 100%);
}

.hero::before, .hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(8px);
  opacity: .5;
  pointer-events: none;
  z-index: 0;
}
.hero::before {
  width: 260px; height: 260px;
  top: -60px; left: -40px;
  background: radial-gradient(circle, rgba(255,107,107,.45), transparent 70%);
  animation: float-orb 17s ease-in-out infinite;
}
.hero::after {
  width: 320px; height: 320px;
  bottom: -120px; right: -60px;
  background: radial-gradient(circle, rgba(124,92,255,.40), transparent 70%);
  animation: float-orb 21s ease-in-out infinite reverse;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(26px, -30px) scale(1.1); }
}

.hero .hero-body { position: relative; z-index: 1; }

.publication-title {
  font-weight: 700;
  line-height: 1.18;
}

.publication-authors { font-family: 'Google Sans', sans-serif; }
.publication-authors a { color: var(--primary-1) !important; font-weight: 600; }
.publication-authors a:hover { text-decoration: underline; }
.author-block { display: inline-block; }

/* Acceptance banner (EMNLP 2026) */
.venue-banner {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  padding: 14px 28px;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: var(--transition-lift);
}
.venue-banner:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary-1);
}
.venue-logo { height: 46px; width: auto; flex-shrink: 0; }
.venue-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 2px;
  border-left: 1px solid var(--line-soft);
  padding-left: 20px;
}
.venue-accept {
  font-family: 'Google Sans', 'Noto Sans', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
}
.venue-rate {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* CTA buttons */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  color: #fff;
  border: none;
  transition: var(--transition-lift);
}
.cta.is-paper { background: linear-gradient(135deg, var(--primary-2), var(--primary-1)); }
.cta.is-code  { background: linear-gradient(135deg, #374151, #1f2937); }
.cta:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(124, 92, 255, 0.4); color: #fff; }
.cta.is-disabled { opacity: .55; pointer-events: none; }

/* ===========================================================
   SECTIONS
   =========================================================== */
.section { padding: 3.2rem 1.5rem; }
.section .container { max-width: var(--container-max); }
.section.alt-bg { background: linear-gradient(180deg, var(--tint-2) 0%, #ffffff 100%); }

.section .title.is-3 {
  margin-bottom: 1.4rem;
  position: relative;
  display: inline-block;
}
.section .title.is-3::after {
  content: "";
  display: block;
  width: 56px; height: 4px;
  margin-top: 10px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary-1), var(--coral-2));
}

.content .title.is-3 { text-align: left; }

/* ===========================================================
   CARDS
   =========================================================== */
.feature-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 30px 22px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: var(--transition-lift);
  height: 100%;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(124, 92, 255, 0.35);
}
.feature-icon {
  font-size: 2.6rem;
  margin-bottom: 18px;
  display: block;
  background: linear-gradient(135deg, var(--primary-1), var(--coral-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.methodology-step {
  background: #fff;
  border-left: 5px solid var(--primary-1);
  padding: 24px 26px;
  margin: 20px 0;
  border-radius: 0 12px 12px 0;
  box-shadow: var(--shadow-card);
  transition: var(--transition-lift);
}
.methodology-step:hover { transform: translateX(5px); box-shadow: var(--shadow-card-hover); }

/* metric cards */
.metric-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 24px 18px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: var(--transition-lift);
  height: 100%;
}
.metric-card:hover { transform: translateY(-5px); box-shadow: 0 16px 38px rgba(20, 184, 166, 0.22); }
.metric-number {
  font-size: 2.6rem;
  font-weight: 800;
  display: block;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--teal-2), var(--teal-1));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.metric-card.is-warm .metric-number { background: linear-gradient(135deg, var(--coral-1), var(--amber)); -webkit-background-clip: text; background-clip: text; }
.metric-card.is-purple .metric-number { background: linear-gradient(135deg, var(--primary-1), var(--primary-2)); -webkit-background-clip: text; background-clip: text; }
.metric-label { font-size: 0.88rem; color: var(--ink-soft); margin-top: 6px; }

/* highlight callout */
.highlight-box {
  background: linear-gradient(135deg, rgba(124,92,255,.06), rgba(255,142,83,.06));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 22px 24px;
  margin: 22px 0;
  transition: var(--transition-lift);
}
.highlight-box:hover { box-shadow: var(--shadow-card-hover); }
.highlight-box h4 { color: var(--primary-2); margin-bottom: .4rem; }

/* ===========================================================
   PERSONA CARDS  (clickable -> modal)
   =========================================================== */
.persona-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-top: 4px solid var(--primary-1);
  border-radius: var(--radius-card);
  padding: 20px 22px;
  margin: 12px 0;
  cursor: pointer;
  transition: var(--transition-lift);
  position: relative;
}
.persona-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.persona-card .persona-emoji { font-size: 1.7rem; }
.persona-card h5 { margin: 6px 0 4px; font-size: 1.08rem; }
.persona-card .persona-role { font-size: .82rem; font-weight: 600; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .4px; }
.persona-card .tap-hint {
  position: absolute; top: 14px; right: 16px;
  font-size: .72rem; color: var(--primary-1); opacity: .7;
}
/* per-persona accent colors */
.persona-card.p-anchor   { border-top-color: var(--teal-1); }
.persona-card.p-catalyst { border-top-color: var(--amber); }
.persona-card.p-beacon   { border-top-color: var(--coral-1); }
.persona-card.p-scribe   { border-top-color: var(--primary-1); }
.persona-card.p-logger   { border-top-color: var(--teal-2); }
.persona-card.p-captain  { border-top-color: var(--coral-2); }
.persona-card.p-critic   { border-top-color: var(--primary-2); }

/* ===========================================================
   FIGURES  (clickable -> lightbox)
   =========================================================== */
.fig-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 1.2rem;
  box-shadow: var(--shadow-card);
  text-align: center;
  margin: 1rem 0;
}
.fig-card img, .zoomable {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}
.zoomable { cursor: zoom-in; transition: filter .2s ease; }
.zoomable:hover { filter: brightness(1.03) saturate(1.05); }
.fig-card .caption {
  margin-top: .85rem;
  font-size: .9rem;
  color: var(--ink-soft);
  font-style: italic;
  line-height: 1.55;
  max-width: 840px;
  margin-left: auto; margin-right: auto;
}
.teaser-image { max-width: 88%; }

/* ===========================================================
   LIGHTBOX  &  MODAL  (popups)
   =========================================================== */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 30px;
  background: rgba(17, 18, 28, 0.78);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity .25s ease;
}
.overlay.is-open { display: flex; opacity: 1; }

.overlay .overlay-close {
  position: absolute;
  top: 22px; right: 26px;
  font-size: 2rem;
  color: #fff;
  background: none; border: none;
  cursor: pointer;
  line-height: 1;
}

/* lightbox image */
#lightbox img {
  max-width: 94vw;
  max-height: 82vh;
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
  transform: scale(.96);
  transition: transform .25s ease;
}
#lightbox.is-open img { transform: scale(1); }
#lightbox .lb-caption {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  max-width: 80vw;
  color: #f3f3f7;
  font-size: .9rem;
  font-style: italic;
  text-align: center;
}

/* persona modal */
.modal-card-box {
  background: #fff;
  border-radius: 18px;
  max-width: 520px;
  width: 100%;
  padding: 30px 32px;
  box-shadow: 0 30px 70px rgba(0,0,0,.4);
  transform: translateY(12px) scale(.97);
  transition: transform .25s ease;
  border-top: 6px solid var(--primary-1);
}
.overlay.is-open .modal-card-box { transform: translateY(0) scale(1); }
.modal-card-box .modal-emoji { font-size: 2.4rem; }
.modal-card-box h3 { margin: 8px 0 2px; }
.modal-card-box .modal-role { color: var(--ink-soft); font-weight: 600; text-transform: uppercase; font-size: .8rem; letter-spacing: .5px; }
.modal-card-box .modal-traits { margin: 14px 0; }
.modal-card-box .trait-chip {
  display: inline-block;
  margin: 4px 6px 4px 0;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary-2);
  background: rgba(124, 92, 255, .1);
}
.modal-card-box .modal-example {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--tint);
  border-left: 4px solid var(--coral-2);
  font-size: .92rem;
  line-height: 1.55;
}

/* ===========================================================
   REVEAL ON SCROLL
   =========================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s ease, transform .7s ease;
  will-change: opacity, transform;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ===========================================================
   TABLES (legacy)
   =========================================================== */
table.customTable {
  width: 86%;
  background-color: #fff;
  border-collapse: collapse;
  border: 2px solid var(--line-soft);
  margin-left: auto; margin-right: auto;
}
table.customTable td, table.customTable th {
  border: 2px solid var(--line-soft);
  padding: 6px;
  text-align: center;
  vertical-align: middle;
}
table.customTable thead { background-color: var(--tint-2); }

/* ===========================================================
   BIBTEX
   =========================================================== */
#BibTeX { position: relative; }
.bibtex-wrap { position: relative; }
.copy-bib {
  position: absolute;
  top: 10px; right: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: .82rem;
  font-weight: 600;
  color: #fff;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, var(--primary-1), var(--primary-2));
  transition: var(--transition-lift);
}
.copy-bib:hover { transform: translateY(-1px); }
.copy-bib.is-copied { background: linear-gradient(135deg, var(--teal-2), var(--teal-1)); }
.bibtex-wrap pre {
  border-radius: 12px;
  padding-top: 2.6rem;
  background: #1f2430;
  color: #e7e9f0;
  overflow-x: auto;
}
.bibtex-wrap pre code { color: #e7e9f0; background: none; }

/* ===========================================================
   FOOTER / MISC
   =========================================================== */
.affiliation-logo { height: 56px; width: auto; }

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media screen and (max-width: 900px) {
  .topnav .links {
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line-soft);
    padding: 8px 1.25rem 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .topnav .links.is-open { max-height: 360px; }
  .topnav .links a { width: 100%; padding: 11px 0; }
  .nav-toggle { display: block; }
}

@media screen and (max-width: 768px) {
  table.customTable { width: 100%; }
  .feature-card, .metric-card { margin-bottom: 18px; }
  .title-container { gap: 12px !important; flex-direction: column; }
  .title-icon { height: 84px !important; }
  .publication-title { font-size: 1.7rem !important; text-align: center !important; }
  .logo-container { flex-direction: column !important; gap: 16px !important; }
  .affiliation-logo { height: 46px; max-width: 80%; }
  .venue-banner { flex-direction: column; gap: 12px; padding: 16px 20px; max-width: 92%; }
  .venue-logo { height: 38px; max-width: 100%; }
  .venue-text { align-items: center; text-align: center; border-left: none; padding-left: 0; }
  .venue-accept { font-size: 0.95rem; }
}