/* ================================================
   Custom styles for andreaskuepfer.github.io
   ================================================ */

/* ------------------------------------------------
   Section spacing
   ------------------------------------------------ */
.home-section {
  padding-top: 80px;
  padding-bottom: 80px;
}

.home-section:first-of-type {
  padding-top: 60px;
}

/* ------------------------------------------------
   Scroll-triggered fade-in for sections
   ------------------------------------------------ */
.home-section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease-out, transform 0.65s ease-out;
}

.home-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ------------------------------------------------
   Navigation refinements
   ------------------------------------------------ */
.navbar {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
  transition: box-shadow 0.3s ease;
}

.nav-link {
  position: relative;
  transition: color 0.25s ease !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #7ed0e0;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* ------------------------------------------------
   Section headings — refined underline
   ------------------------------------------------ */
.section-heading h1,
.wg-blank .col-12 > h1 {
  font-size: 1.5rem;
  letter-spacing: 3px;
  text-align: center;
  text-transform: uppercase;
}

.section-heading h1::before,
.section-heading h1::after {
  display: none;
}

.section-heading h1,
.wg-blank .col-12 > h1 {
  position: relative;
  padding-bottom: 12px;
}

.section-heading h1::after,
.wg-blank .col-12 > h1::after {
  display: block;
  content: '';
  position: absolute;
  top: auto;
  right: auto;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: #2c5f6f;
  border-radius: 2px;
}

/* ------------------------------------------------
   News / hero section items
   ------------------------------------------------ */
.wg-hero p strong:first-child,
.wg-hero p > strong {
  color: #2c5f6f;
  font-weight: 700;
}

.wg-hero p {
  padding: 10px 14px;
  border-left: 3px solid transparent;
  margin-bottom: 0.6rem;
  border-radius: 0 4px 4px 0;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.wg-hero p:hover {
  border-left-color: #2c5f6f;
  background-color: rgba(44, 95, 111, 0.05);
}

/* ------------------------------------------------
   Publication cards — subtle lift on hover
   ------------------------------------------------ */
.card {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(44, 95, 111, 0.15);
}

/* ------------------------------------------------
   Links — smooth colour transition
   ------------------------------------------------ */
a {
  transition: color 0.2s ease;
}

/* ------------------------------------------------
   About section — photo border accent
   ------------------------------------------------ */
.portrait-title h2 {
  font-size: 1.75rem;
  letter-spacing: 0.5px;
  color: #2c5f6f;
}

img.portrait {
  border: 4px solid #fff;
  box-shadow: 0 6px 24px rgba(26, 56, 69, 0.18);
  transition: box-shadow 0.3s ease;
}

img.portrait:hover {
  box-shadow: 0 10px 32px rgba(26, 56, 69, 0.28);
}

/* ------------------------------------------------
   Contact section links
   ------------------------------------------------ */
.wg-contact ul li a {
  position: relative;
  display: inline-block;
}