/* =============================================================================
 * project.css — Component library for research project pages.
 *
 * Loaded by _layouts/project_layout.html. Pair with a theme file from
 * css/themes/<name>.css that overrides the --theme-* custom properties below.
 * ============================================================================= */

:root {
  /* Neutral defaults — themed project pages override these via css/themes/<name>.css.
     The homepage loads project.css without a theme and gets this neutral palette. */
  --theme-primary:        #495057;   /* slate */
  --theme-primary-dark:   #2d3748;
  --theme-bg-tint:        #f5f5f5;
  --theme-on-primary:     #ffffff;
  --theme-link:           var(--theme-primary);
  --theme-bibtex-border:  var(--theme-primary);
  --theme-bibtex-bg:      #eeeeee;
  --theme-section-title:  var(--theme-primary);
  --theme-tldr-accent:    var(--theme-primary);

  /* Theme-independent accents */
  --accent-purple:        #7600b9;
  --hl-soft-bg:           #ffe6ff;
  --hl-mute-bg:           #dadada;
  --text-muted:           #555;
}

/* --- Reset & base --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--theme-bg-tint);
  color: #000000;
  line-height: 1.6;
  text-align: center;
  padding: 2rem;
}

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

section {
  margin-top: 3rem;
  margin-bottom: 3rem;
}

p {
  text-align: left;
  margin-bottom: 1rem;
}

.paper-section > p {
  padding-left: 5rem;
  padding-right: 5rem;
}

.paper-section p {
  font-size: 1rem;
  line-height: 1.7;
  color: #333;
}

/* --- Paper section card --- */
.paper-section {
  background: #ffffff;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-weight: bold;
  max-width: 1200px;
  font-size: 2rem;
  color: var(--theme-section-title);
  margin-bottom: 1rem;
  display: inline-block;
  padding-bottom: 0.25rem;
}

/* --- Title / authors / affiliations / venue --- */
.title {
  font-weight: bold;
  font-size: 36px;
  line-height: 1.3;
  margin-bottom: 1.2em;
}

.authors {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em 1.5em;
  justify-content: center;
  margin-top: 1.0em;
}

.authors span {
  font-size: 20px;
}

/* Tighter inter-author spacing for long-title pages where authors are auto-numbered. */
.authors sup {
  margin-right: 0.1em;
}

.affiliations {
  margin-top: 1em;
  margin-bottom: 0.5em;
  line-height: 1.8;
}

.affiliations span {
  font-size: 16px;
}

.affiliation-item {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3em;
  margin: 0 1em;
}

.affiliation-logo {
  height: 100px;
  width: auto;
  vertical-align: middle;
}

.venue {
  margin-top: 1.2em;
  margin-bottom: 1.5em;
}

/* --- Buttons / link group --- */
.button-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.5em;
  margin-bottom: 2rem;
}

.button-group .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--theme-primary);
  color: var(--theme-on-primary);
  padding: 0.6rem 1.3rem;
  font-size: 1.2rem;
  border-radius: 6px;
  text-decoration: none !important;
  cursor: pointer;
  transition: background-color 0.3s;
  border: none;
  font-weight: 600;
  white-space: nowrap;
}

.button-group .btn:hover {
  background-color: var(--theme-primary-dark);
  color: var(--theme-on-primary);
  text-decoration: none !important;
}

.button-group .btn i,
.button-group .btn .fab,
.button-group .btn .fas {
  display: inline-block;
  text-decoration: none !important;
}

.button-group .btn span {
  text-decoration: none;
  display: inline-block;
}

.button-group .btn:hover span {
  text-decoration: underline;
}

.button-group .btn:hover i,
.button-group .btn:hover .fab,
.button-group .btn:hover .fas {
  text-decoration: none !important;
}

@media (max-width: 500px) {
  .button-group {
    flex-direction: column;
    align-items: center;
  }
  .button-group .btn {
    width: 100%;
    justify-content: center;
  }
}

/* --- TLDR callout --- */
.tldr-block {
  border-left: 6px solid var(--theme-tldr-accent);
  background-color: #f9f9f9;
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.tldr-title {
  font-weight: bold;
  font-size: 32px;
  color: var(--theme-tldr-accent);
  margin-bottom: 8px;
}

.tldr-content {
  font-weight: bold;
  text-align: left;
  font-size: 20px;
  line-height: 1.6;
}

.tldr-content ol {
  margin: 0;
  padding-left: 20px;
}

.tldr-content li {
  margin-bottom: 8px;
}

/* --- Inline highlights --- */
.highlight-primary {
  color: var(--theme-primary);
  font-weight: 600;
}

.highlight-accent {
  color: var(--accent-purple);
  font-weight: 600;
}

.highlight-soft {
  background-color: var(--hl-soft-bg);
  color: #000000;
  font-weight: bold;
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.highlight-mute {
  background-color: var(--hl-mute-bg);
  color: #000000;
  font-weight: bold;
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

/* --- Custom ordered lists --- */
.paper-section ul.custom-list,
.paper-section ul.list-123 {
  list-style: none;
  padding-left: 5rem;
  padding-right: 5rem;
  text-align: left;
  margin-bottom: 1rem;
}

.paper-section ul.custom-list  { counter-reset: custom-counter; }
.paper-section ul.list-123     { counter-reset: number-counter; }

.paper-section ul.custom-list li,
.paper-section ul.list-123 li {
  margin-bottom: 0.5em;
  position: relative;
  padding-left: 2em;
}

.paper-section ul.custom-list li { counter-increment: custom-counter; }
.paper-section ul.list-123 li    { counter-increment: number-counter; }

.paper-section ul.custom-list li::before {
  content: "(" counter(custom-counter, lower-alpha) ") ";
  position: absolute;
  left: 0;
  font-weight: normal;
}

.paper-section ul.list-123 li::before {
  content: counter(number-counter) ". ";
  position: absolute;
  left: 0;
  font-weight: normal;
}

/* --- Subsection --- */
.paper-subsection {
  margin-top: 2em;
  margin-bottom: 1.5em;
  padding-left: 5rem;
  padding-right: 5rem;
}

.paper-subsection h2 {
  display: block;
  font-size: 1.2em;
  font-weight: bold;
  text-align: left;
}

.paper-subsection p {
  display: block;
  margin: 0;
  padding-left: 0;
  padding-right: 0;
}

/* --- Figures --- */
.figure-block {
  margin: 2rem auto;
  text-align: center;
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
}

figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0;
  text-align: center;
  max-width: 100%;
  box-shadow: none;
}

figure img {
  max-width: 100%;
}

figcaption {
  text-align: left;
  margin-top: 0.75rem;
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding-left: 5rem;
  padding-right: 5rem;
  margin-bottom: 1rem;
}

.figure-image-teaser {
  max-width: 80%;
  height: auto;
}

/* --- GIF row (side-by-side or single, with rounded shadow) --- */
.gif-container {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.gif-container img {
  height: auto;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
  max-width: 48%;
}

.gif-container img:only-child {
  max-width: 90%;
}

/* --- YouTube / external iframe wrapper --- */
.video-container {
  display: flex;
  justify-content: center;
  margin: 1.5rem 0;
}

.video-container iframe {
  max-width: 100%;
  border: 0;
}

/* --- Video carousel --- */
.video-carousel {
  margin-top: 2rem;
  margin-bottom: 2rem;
  padding-left: 5rem;
  padding-right: 5rem;
}

.video-carousel-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.video-carousel-item {
  display: none !important;
  flex-direction: column;
  width: 100%;
}

.video-carousel-item.active {
  display: flex !important;
}

.video-carousel-item video {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.video-caption {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 1rem;
}

.video-carousel-nav {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--theme-primary);
  background-color: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.carousel-dot:hover {
  background-color: color-mix(in srgb, var(--theme-primary) 30%, transparent);
}

.carousel-dot.active {
  background-color: var(--theme-primary);
}

/* --- BibTeX block --- */
.bibtex-block {
  background-color: var(--theme-bibtex-bg);
  border-left: 6px solid var(--theme-bibtex-border);
  padding: 1rem;
  margin-top: 1rem;
  font-family: monospace;
  white-space: pre;
  overflow-x: auto;
  font-size: 0.9rem;
  text-align: left;
}

/* --- Homepage: avatar + social icons + news --- */
.avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  border: 3px solid #ffffff;
  display: block;
  margin: 0 auto;
}

.contact-block {
  text-align: center;
  margin-top: 1rem;
}

.contact-block strong { font-size: 1.05rem; }
.contact-block address { font-style: normal; margin: 0.4rem 0 0.8rem; color: var(--text-muted); }

.social-icons {
  display: flex;
  justify-content: center;
  gap: 1.4rem;
  margin: 0.8rem 0 0.4rem;
}
.social-icons a {
  display: inline-flex;
  opacity: 0.75;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.social-icons a:hover {
  opacity: 1;
  transform: translateY(-2px);
}
.social-icons img {
  width: 36px;
  height: 36px;
}

.news-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 1.5rem;
  row-gap: 0.5rem;
  text-align: left;
  margin: 0.5rem 2rem 0;
  padding: 0;
  max-height: 14rem;
  overflow-y: auto;
}
.news-list dt {
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}
.news-list dd { margin: 0; }

.affiliation-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
}
.affiliation-row .affiliation-item {
  min-width: 140px;
  max-width: 200px;
  text-align: center;
}
.affiliation-row .affiliation-item img {
  height: 60px;
  width: auto;
  object-fit: contain;
}
.affiliation-row .affiliation-item .aff-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* --- Homepage: publication list --- */
.pub-list {
  text-align: left;
}

.pub-row {
  align-items: center;
}

.pub-teaser {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
}
.pub-teaser img {
  max-width: 100%;
  max-height: 200px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
}

.pub-meta h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.4rem 0;
  line-height: 1.35;
}
.pub-authors {
  font-size: 0.95rem;
  color: #444;
  margin-bottom: 0.4rem;
}
.pub-authors i {
  color: var(--text-muted);
}
.author-name {
  white-space: nowrap;
}
.pub-links {
  margin: 0;
}
.pub-links .btn {
  font-size: 0.8rem;
  padding: 0.25rem 0.6rem;
}

.pub-divider {
  border: 0;
  border-top: 1px solid #e3e3e3;
  margin: 1.5rem 0;
}

/* --- Homepage: teaching / awards lists --- */
.teaching-list,
.awards-list {
  text-align: left;
  max-width: 800px;
  margin: 0.5rem auto;
  padding-left: 1.5rem;
}
.teaching-list li,
.awards-list li {
  margin-bottom: 0.4rem;
}