/* =======================================================
 * Site-level custom styles
 * Keep original Colorlib/bootstrap CSS in css/style.css.
 * Put new site colors, helper classes, page-specific styles,
 * and inline-style replacements here.
 * ======================================================= */

:root {
  --site-accent: #6C5070;
  --site-accent-dark: #312434;
  --site-sidebar-bg: #f2f3f7;
  --site-alert-red: #D62728;
  --site-info-blue: #3663A1;
  --site-soft-yellow: #FEEFD6;
  --site-badge-yellow: #FCDBA6;
  --site-vision-yellow: #F3E29C;
  --site-muted-purple: #5A476F;
  --site-text-dark: #2f2f2f;
  --site-text-muted: #555;
  --site-border-light: #eeeeee;
}

/* ---------- Shared sidebar ---------- */
.site-author-img {
  background-image: url("../images/profile.jpg");
  background-size: cover;
  background-position: center center;
}

#colorlib-aside .colorlib-social-menu {
  display: block;
  width: 100%;
  padding-bottom: 20%;
}

#colorlib-aside .colorlib-social-menu ul {
  text-align: center;
  margin: 0;
  padding: 0;
}

#colorlib-aside .colorlib-social-menu ul li {
  display: inline-block;
  margin: 0 6px;
  list-style: none;
}

#colorlib-aside .colorlib-social-menu ul li a {
  color: rgba(0, 0, 0, 0.6) !important;
  font-size: 18px;
}

#colorlib-aside .colorlib-social-menu ul li a:hover,
#colorlib-aside .colorlib-social-menu ul li a:active,
#colorlib-aside .colorlib-social-menu ul li a:focus {
  color: var(--site-accent) !important;
}

/* ---------- Home page helpers ---------- */
.hero-slide-2025-rs { background-image: url("../images/2025-rs.jpg"); }
.hero-slide-2024-graduate { background-image: url("../images/2024-graduate.jpg"); }
.hero-slide-2024-graduate-2 { background-image: url("../images/2024-graduate-2.jpg"); }
.hero-slide-2023-icassp { background-image: url("../images/2023-icassp.jpg"); }
.hero-slide-2023-acii { background-image: url("../images/2023-acii.jpg"); }
.hero-slide-2024-icassp { background-image: url("../images/2024-icassp.jpg"); }
.hero-slide-2025-rs-2 { background-image: url("../images/2025-rs-2.jpg"); }

.position-highlight {
  display: inline-block;
  font-size: 24px;
}

.student-notice {
  display: inline-block;
  padding: 6px 12px;
  background: var(--site-soft-yellow);
  border: 2px dotted #000;
  color: #000;
  border-radius: 8px;
  font-size: 17px;
  font-weight: 300;
  white-space: normal;
}

.student-notice__title {
  display: inline-block;
  color: var(--site-alert-red);
  font-weight: 500;
}

.contact-action {
  margin-top: 14px;
}

.colorlib-contact iframe,
.colorlib-Contact iframe {
  border: 0;
}

/* ---------- Publication helpers ---------- */
.pub-title-main {
  color: #000;
}

.text-award {
  color: var(--site-alert-red);
}

.text-info-blue {
  color: var(--site-info-blue);
}

.text-accent {
  color: var(--site-accent);
}

.publication-subheading {
  color: var(--site-accent);
}

/* ---------- Research page ---------- */
.research-intro {
  font-size: 18px;
  line-height: 1.9;
  color: var(--site-text-muted);
  margin-bottom: 35px;
}

.research-section-title {
  font-family: 'Ubuntu', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--site-text-dark);
  margin-bottom: 18px;
  border-left: 4px solid var(--site-accent);
  padding-left: 14px;
}

.vision-badge {
  display: inline-block;
  background: var(--site-vision-yellow);
  color: var(--site-muted-purple);
  font-family: 'Ubuntu', sans-serif;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  padding: 10px 18px;
  border-radius: 14px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.vision-figure-wrap {
  background: #fff;
  border: 1px solid var(--site-border-light);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  margin-bottom: 18px;
}

.vision-figure-wrap img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
}

.vision-caption {
  font-size: 16px;
  line-height: 1.8;
  color: #666;
  margin-top: 18px;
  margin-bottom: 45px;
}

.topic-card {
  background: #fff;
  border: 1px solid var(--site-border-light);
  border-radius: 16px;
  padding: 28px 28px 24px 28px;
  margin-bottom: 32px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.045);
  transition: all 0.25s ease;
}

.topic-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.topic-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.topic-number {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--site-accent);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.topic-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(108, 80, 112, 0.10);
  color: var(--site-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.topic-title {
  font-family: 'Ubuntu', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--site-text-dark);
  line-height: 1.4;
  margin: 0;
}

.topic-desc {
  font-size: 17px;
  line-height: 1.95;
  color: var(--site-text-muted);
  margin: 0 0 22px 0;
  text-align: justify;
}

.topic-figure-wrap {
  background: #fafafa;
  border: 1px solid var(--site-border-light);
  border-radius: 14px;
  padding: 16px;
  margin-top: 6px;
}

.topic-figure-wrap img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
}

.research-note {
  margin-top: 12px;
  font-size: 15px;
  color: #777;
  font-style: italic;
}

@media screen and (max-width: 768px) {
  .topic-header {
    align-items: flex-start;
  }

  .topic-title {
    font-size: 21px;
  }

  .topic-desc,
  .research-intro,
  .vision-caption {
    font-size: 16px;
  }

  .vision-badge {
    font-size: 17px;
    padding: 8px 14px;
    border-radius: 12px;
  }
}

/* ---------- Publication page: preserve original hand-coded appearance ---------- */
.bibliography .title b,
.bibliography .title strong {
  font-weight: 700;
}

.pub-new-badge {
  height: 20px !important;
  width: auto !important;
  margin-left: 6px;
  vertical-align: text-bottom;
}

.bibliography .badge a,
.bibliography .badge a:hover,
.bibliography .badge a:active,
.bibliography .badge a:focus {
  color: var(--site-muted-purple);
  text-decoration: none !important;
}

.bibliography code {
  display: inline-block;
  margin-left: 4px;
  margin-right: 4px;
}