/* ===== Theme ===== */
:root {
  --cyan: #00feff;
  --cyan-dark: #00c8d4;
  --dark: #0b1120;
  --dark-mid: #131b2e;
  --white: #ffffff;
  --gray-50: #f5f7fa;
  --gray-100: #eaedf2;
  --gray-300: #ced4da;
  --gray-500: #6c757d;
  --gray-800: #2d3748;
  --gray-900: #1a202c;
  --text: #2d3748;
  --text-light: #5a6577;
  --cyan-glow: rgba(0, 254, 255, 0.25);
  --cyan-glow-strong: rgba(0, 254, 255, 0.45);
}

html {
  scroll-behavior: smooth;
}

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

/* ===== Hero ===== */
.hero.is-primary-gradient {
  background: linear-gradient(160deg, var(--dark) 0%, var(--dark-mid) 60%, #0d2137 100%);
  position: relative;
  overflow: hidden;
  padding-bottom: 0;
}

.hero.is-primary-gradient::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero.is-primary-gradient .publication-title {
  font-family: 'Google Sans', sans-serif;
  color: var(--white);
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  text-shadow: 0 0 40px var(--cyan-glow);
}

.hero.is-primary-gradient .publication-authors a {
  color: var(--cyan) !important;
  font-weight: 600;
  transition: opacity 0.3s;
}

.hero.is-primary-gradient .publication-authors a:hover {
  color: var(--white) !important;
  text-decoration: underline;
}

.hero.is-primary-gradient .button.is-dark {
  background-color: transparent;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  font-weight: 600;
  transition: all 0.3s ease;
}

.hero.is-primary-gradient .button.is-dark:hover {
  background-color: var(--cyan);
  color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--cyan-glow-strong);
}

/* ===== Sections ===== */
section.section {
  padding: 4rem 1.5rem;
}

.section-alt {
  background-color: var(--gray-50);
}

.section-gradient {
  background: linear-gradient(180deg, var(--white) 0%, rgba(0, 254, 255, 0.03) 100%);
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
  position: relative;
}

/* ===== Section Headings ===== */
h2.title.is-2 {
  font-family: 'Google Sans', sans-serif;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1.8rem;
  position: relative;
  padding-bottom: 0.75rem;
}

/* ===== Teaser ===== */
.teaser-video {
  border-radius: 14px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--gray-100);
}

.teaser-caption {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-top: 0.75rem;
}

/* ===== Highlight Cards ===== */
.highlight-card {
  padding: 1.5rem 1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 12px;
  background: var(--white);
  border: 1px solid var(--gray-100);
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  border-color: var(--cyan);
}

.highlight-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  font-size: 1.6rem;
  color: var(--white);
  background: var(--dark);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 16px var(--cyan-glow);
}

/* ===== Video Cards ===== */
.video-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--gray-100);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  background: var(--white);
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border-color: var(--cyan);
}

.video-card video {
  display: block;
  width: 100%;
}

.video-card .video-card-body {
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--gray-100);
}

.video-card .video-card-body h5 {
  margin-bottom: 0 !important;
  color: var(--gray-800);
  font-size: 0.85rem !important;
}

.video-card .video-card-body p {
  margin-bottom: 0;
}

/* ===== Figure Images ===== */
figure.image-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--gray-100);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: var(--white);
}

figure.image-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}

figure.image-card img {
  display: block;
  width: 100%;
}

/* ===== Seamless Card (Floating) ===== */
.seamless-card {
  border-radius: 16px;
  border: none;
  background: transparent;
  /* Soft shadow for depth */
  box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.seamless-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px -5px rgba(0, 0, 0, 0.15);
}

.seamless-card img {
  display: block;
  width: 100%;
  border-radius: 16px;
}

/* ===== Flat Figure (Clean, No Depth) ===== */
.flat-figure {
  background: transparent;
  border: none;
  box-shadow: none;
  transition: none;
  padding: 0;
  margin: 0;
}

.flat-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== Tabs (Pill Style) ===== */
.tabs.is-pill {
  overflow: visible !important;
}

.tabs.is-pill ul {
  border-bottom: none;
  gap: 0.8rem;
  flex-wrap: wrap;
  justify-content: center;
  padding: 10px; /* 그림자 잘림 방지 */
}

.tabs.is-pill li a {
  border: 1px solid rgba(0, 0, 0, 0.05) !important;
  border-radius: 999px !important;
  padding: 0.7em 1.8em;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-light);
  background: var(--white);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.tabs.is-pill li a:hover {
  border-color: rgba(0, 0, 0, 0.1) !important;
  color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.06);
}

.tabs.is-pill li.is-active a {
  background: var(--dark) !important;
  color: var(--white) !important;
  border-color: var(--dark) !important;
  box-shadow: 0 8px 20px rgba(11, 17, 32, 0.25);
  transform: translateY(-2px);
}

/* ===== Fade-in Animation ===== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Figcaptions ===== */
figcaption {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-top: 0.75rem;
  padding: 0 0.5rem;
}

/* ===== Caption Card ===== */
.caption-card {
  background: var(--white);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--gray-100);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.7;
}

.caption-card b {
  color: var(--gray-800);
}

/* ===== BibTeX ===== */
#BibTeX pre {
  border-radius: 12px;
  background: var(--gray-50);
  padding: 1.25rem;
  border: 1px solid var(--gray-100);
  box-shadow: none;
}

.copy-bibtex-btn {
  opacity: 0.5;
  transition: opacity 0.3s ease, background-color 0.3s ease;
}

.copy-bibtex-btn:hover {
  opacity: 1;
}

.copy-bibtex-btn.is-success {
  background-color: var(--cyan) !important;
  color: var(--dark) !important;
  border-color: var(--cyan) !important;
  opacity: 1;
}

/* ===== Footer ===== */
.footer {
  padding: 2rem 1.5rem;
  background-color: var(--gray-50);
}

.footer .icon-link {
  font-size: 25px;
  color: var(--gray-800);
  transition: color 0.3s;
}

.footer .icon-link:hover {
  color: var(--cyan-dark);
}

/* ===== Nerfies Legacy / Shared ===== */
.link-block a {
  margin-top: 5px;
  margin-bottom: 5px;
}

.dnerf {
  font-variant: small-caps;
}

.publication-title {
  font-family: 'Google Sans', sans-serif;
  margin-top: 3rem;
}

.publication-authors {
  font-family: 'Google Sans', sans-serif;
}

.publication-venue {
  color: var(--gray-500);
  width: fit-content;
  font-weight: bold;
}

.publication-awards {
  color: #ff3860;
  width: fit-content;
  font-weight: bolder;
}

.publication-authors a {
  color: var(--cyan-dark) !important;
}

.publication-authors a:hover {
  text-decoration: underline;
}

.author-block {
  display: inline-block;
}

.publication-video {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 10px !important;
}

.publication-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.results-carousel {
  overflow: hidden;
}

.results-carousel .item {
  margin: 5px;
  overflow: hidden;
  border: 1px solid var(--gray-300);
  border-radius: 10px;
  padding: 0;
  font-size: 0;
}

.results-carousel video {
  margin: 0;
}

.interpolation-panel {
  background: var(--gray-50);
  border-radius: 10px;
}

.interpolation-panel .interpolation-image {
  width: 100%;
  border-radius: 5px;
}

.interpolation-panel .slider {
  margin: 0 !important;
}

#interpolation-image-wrapper {
  width: 100%;
}

#interpolation-image-wrapper img {
  border-radius: 5px;
}

.is-hidden {
  display: none !important;
}