:root {
  --clr-accent: #2b5d86;
  --clr-accent-light: rgba(43, 93, 134, 0.12);
  --clr-text: #333;
  --clr-muted: #555;
  --clr-muted-light: #556677;
  --font-size-base: 15px;
  --transition-base: 0.25s ease;
}

/* Paper card layout */
.paper {
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding-bottom: 15px;
  will-change: transform;
  overflow: auto; /* allows float wrapping */
  scroll-margin-top: 80px;
}

.paper-content-wrapper {
  overflow: hidden; /* contains floats */
  position: relative;
}

.paper-image.left {
  float: left;
  margin-right: 16px;
}
.paper-image.right {
  float: right;
  margin-left: 16px;
}

.paper-img {
  width: 350px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

.paper-video {
  width: 350px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

/* Let text flow beside floated images */
.paper-text {
  overflow: visible;
  display: block;
}

.paper-title {
  /* Swapped: use previous group-title visual style */
  font-size: 18px;
  margin: 6px 0 12px;
  color: var(--clr-accent);
}

/* Accent border and padding based on image side */
.paper-image.left + .paper-text {
  padding-left: 10px;
  border-left: 4px solid rgba(43, 93, 134, 0.12);
}
.paper-image.right + .paper-text {
  padding-right: 10px;
  border-right: 4px solid rgba(43, 93, 134, 0.12);
  text-align: right;
}

/* Ensure inner elements follow parent alignment */
.paper-image.left + .paper-text .paper-title,
.paper-image.left + .paper-text .paper-description,
.paper-image.left + .paper-text .paper-metadata {
  text-align: left;
}

.paper-image.right + .paper-text .paper-title,
.paper-image.right + .paper-text .paper-description,
.paper-image.right + .paper-text .paper-metadata {
  text-align: right;
}

/* Margin rules for small metadata pills (keep away from image) */
.paper-image.left + .paper-text .paper-project,
.paper-image.left + .paper-text .paper-contact {
  margin: 0 12px 0 0;
  padding: 0;
}

.paper-image.right + .paper-text .paper-project,
.paper-image.right + .paper-text .paper-contact {
  margin: 0 0 0 12px;
  padding: 0;
}

.paper-metadata {
  font-size: 14px;
  color: #556677;
  margin: 3px 0;
  line-height: 1.4;
}

.paper-project,
.paper-contact {
  display: block;
  background: transparent;
  color: var(--clr-text);
  padding: 0;
  border-radius: 0;
  font-size: 14px;
  margin: 6px 0;
  font-weight: 400;
}

/* Meta values inherit surrounding text color */
.paper-project .meta-value,
.paper-contact .meta-value {
  color: inherit;
  font-weight: 400;
}

/* Contact names clickable and show pointer; use accent color */
.paper-contact .meta-value a.contact-mail {
  cursor: pointer;
  color: var(--clr-accent);
  text-decoration: none;
}
.paper-contact .meta-value a.contact-mail:hover {
  text-decoration: underline;
}

/* Links inside meta use accent color */
.paper-project a,
.paper-contact a {
  color: var(--clr-accent);
  font-weight: 400;
  text-decoration: none;
}

.paper-abstract {
  margin: 8px 0;
  line-height: 1.4;
  text-align: justify;
  clear: none;
}

.paper-description {
  margin: 0;
  color: #333;
  font-size: 15px;
  hyphens: auto;
  text-align: left;
}

/* Responsive: stack images above text */
@media (max-width: 1200px) {
  .paper-image,
  .group-list .paper .paper-image {
    width: 100%;
    float: none !important;
    margin: 0 0 20px 0 !important;
  }
  .group-list .paper {
    overflow: visible;
  }
  .group-list .paper .paper-img,
  .group-list .paper .paper-video {
    width: 100%;
    height: auto;
  }

  /* Remove side accents when stacked */
  .paper-image.left + .paper-text,
  .paper-image.right + .paper-text {
    padding: 0;
    border: none;
    text-align: left;
  }
}

/* Project grid and groups */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.project-group {
  background: transparent;
  padding: 18px 0 6px;
  border-top: 2px solid var(--clr-accent-light);
}
.group-title {
  font-size: 22px;
  font-weight: 700;
  color: #1f4868;
  margin-bottom: 8px;
  line-height: 1.2;
}
.group-desc {
  margin: 0 0 14px;
  color: #444;
  font-size: 15px;
}
.projects-cards {
  display: block;
}

.group-list .paper {
  padding: 8px 0 12px;
  background: transparent;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.group-list .paper:last-child {
  border-bottom: none;
  padding-bottom: 6px;
}

.group-list .paper .paper-image {
  width: 50%;
  margin: 0 16px 0 0;
  float: left;
}
.group-list .paper .paper-img,
.group-list .paper .paper-video {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: none;
  max-height: 300px;
}

/* Alternate float direction for even cards */
.group-list .paper:nth-child(even) .paper-image {
  float: right;
  margin: 0 0 0 12px;
}

/* Horizontal divider */
.projects-hr {
  border: none;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(43, 93, 134, 0.18),
    rgba(43, 93, 134, 0.06)
  );
  margin: 24px 0;
}
.projects-hr:first-child,
.projects-hr:last-child {
  display: none;
}

/* Loading / error messages */
.group-list p.loading,
.group-list p.error {
  margin: 6px 0 10px;
  color: #666;
}

/* Repeated responsive rules (kept for legacy support) */
@media (max-width: 1200px) {
  .paper-image,
  .group-list .paper .paper-image {
    width: 100%;
    float: none !important;
    margin: 0 0 20px 0 !important;
  }
  .group-list .paper {
    overflow: visible;
  }
  .group-list .paper .paper-img,
  .group-list .paper .paper-video {
    width: 100%;
    height: auto;
  }
}

@media (max-width: 900px) {
  .paper-content-wrapper > div:first-of-type {
    font-size: 16px;
    padding-left: 6px;
    border-left-width: 3px;
  }
  .paper-description {
    font-size: 14px;
  }
}