/* ========================================
   Custom Styles for stephofx.github.io
   ======================================== */

/* --- Color Palette --- */
:root {
  --color-bg: #fafafa;
  --color-text: #2d2d2d;
  --color-text-secondary: #5a5a5a;
  --color-accent: #1a5276;
  --color-accent-light: #2980b9;
  --color-accent-hover: #0e3a54;
  --color-border: #e0e0e0;
  --color-border-light: #f0f0f0;
  --color-card-bg: #ffffff;
  --color-header-border: #1a5276;
  --color-footer-bg: #f5f5f5;
}

/* --- Base Overrides --- */
body {
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  font-size: 17px;
  line-height: 1.7;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Source Sans 3', sans-serif;
  font-weight: 600;
  color: var(--color-text);
}

h1 { font-size: 1.8em; margin-top: 1.6em; margin-bottom: 0.6em; }
h2 { font-size: 1.4em; margin-top: 1.4em; margin-bottom: 0.5em; }
h3 { font-size: 1.2em; }

.home h1:first-of-type {
  margin-top: 1.2em;
}

/* --- Links --- */
a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:visited {
  color: var(--color-accent);
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* --- Profile Block (Image + Social Icons) --- */
.profile-block {
  float: right;
  margin: 0 0 20px 30px;
  text-align: center;
}

.profile-block .profile-photo {
  float: none;
  margin: 0 0 10px 0;
  display: block;
}

/* --- Social Links (Top) --- */
.social-links-top {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.social-links-top a {
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
}

.social-links-top a:visited {
  color: var(--color-text-secondary);
}

.social-links-top a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* --- Hero Name on Homepage --- */
.hero-name {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 2.8em;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.1em;
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.hero-subtitle {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.05em;
  color: var(--color-text-secondary);
  margin-bottom: 1.5em;
  font-weight: 400;
}

/* --- Header --- */
.site-header {
  border-top: 3px solid var(--color-header-border) !important;
  border-bottom: 1px solid var(--color-border) !important;
  background-color: var(--color-card-bg);
}

.site-nav .page-link {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 15px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary) !important;
  transition: color 0.2s ease;
}

.site-nav .page-link:hover {
  color: var(--color-accent) !important;
  text-decoration: none;
}

/* --- Profile Image --- */
.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  float: right;
  margin: 0 0 20px 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border: 3px solid var(--color-border-light);
  transition: box-shadow 0.3s ease;
}

.profile-photo:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

/* --- Intro Text --- */
.intro-text {
  font-size: 1.02em;
  line-height: 1.75;
}

.intro-text p {
  margin-bottom: 1em;
}

/* --- Collapsible / Drop-down Panels --- */
details {
  margin-bottom: 0.8em;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-card-bg);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

details:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

details[open] {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

details summary {
  padding: 12px 18px;
  font-family: 'Source Sans 3', sans-serif;
  font-weight: 600;
  font-size: 1.15em;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background-color 0.2s ease;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::before {
  content: '\25B6';
  font-size: 0.65em;
  color: var(--color-text-secondary);
  transition: transform 0.2s ease;
  display: inline-block;
}

details[open] summary::before {
  transform: rotate(90deg);
}

details summary:hover {
  background-color: var(--color-border-light);
}

details .panel-content {
  padding: 8px 18px 18px 18px;
  border-top: 1px solid var(--color-border);
  line-height: 1.75;
}

/* --- Section Headings (used as drop-down titles) --- */
.section-heading {
  font-family: 'Source Sans 3', sans-serif;
  font-weight: 600;
  font-size: 1.3em;
  color: var(--color-text);
  margin-top: 1.8em;
  margin-bottom: 0.6em;
  padding-bottom: 0.3em;
  border-bottom: 2px solid var(--color-header-border);
  display: inline-block;
}

/* --- News Items --- */
.news-list {
  list-style: none;
  margin-left: 0;
  padding: 0;
}

.news-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.news-list li:last-child {
  border-bottom: none;
}

.news-date {
  font-weight: 600;
  font-size: 0.9em;
  color: var(--color-accent);
  white-space: nowrap;
  min-width: 80px;
}

.news-text {
  color: var(--color-text);
}

/* --- Publication Items --- */
.pub-item {
  margin-bottom: 1.2em;
  padding: 14px 18px;
  border-left: 3px solid var(--color-accent-light);
  background: var(--color-card-bg);
  border-radius: 0 6px 6px 0;
}

.pub-item .pub-title {
  font-weight: 600;
  font-size: 1.02em;
  margin-bottom: 4px;
}

.pub-item .pub-title a {
  color: var(--color-accent-light);
}

.pub-item .pub-title a:hover {
  color: var(--color-accent-hover);
}

.pub-item .pub-venue {
  font-style: italic;
  color: var(--color-text-secondary);
  font-size: 0.95em;
  margin-bottom: 2px;
}

.pub-item .pub-note {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 0.9em;
}

.pub-item .pub-authors {
  font-size: 0.92em;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-footer-bg) !important;
  border-top: 1px solid var(--color-border) !important;
}

.footer-heading {
  font-family: 'Cormorant Garamond', Georgia, serif !important;
  font-weight: 500 !important;
  color: var(--color-text) !important;
}

.footer-col-wrapper {
  color: var(--color-text-secondary) !important;
}

/* --- Page Content Spacing --- */
.page-content {
  padding-top: 40px;
  padding-bottom: 40px;
}

/* --- Code Block Styling --- */
pre, code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  background-color: #f6f8fa;
  border-color: var(--color-border);
}

/* --- Blockquote --- */
blockquote {
  border-left: 4px solid var(--color-accent-light);
  color: var(--color-text-secondary);
  font-style: italic;
  padding: 10px 20px;
  background: var(--color-border-light);
  border-radius: 0 4px 4px 0;
}

/* --- Smooth Scrolling --- */
html {
  scroll-behavior: smooth;
}

/* --- Selection Color --- */
::selection {
  background: rgba(41, 128, 185, 0.2);
}

/* --- Responsive Adjustments --- */
@media screen and (max-width: 600px) {
  .hero-name {
    font-size: 2em;
  }

  .profile-block {
    float: none;
    margin: 0 auto 20px auto;
    width: fit-content;
  }

  .profile-photo {
    width: 150px;
    height: 150px;
  }

  .news-list li {
    flex-direction: column;
    gap: 2px;
  }

  .news-date {
    min-width: auto;
  }

  .pub-item {
    padding: 12px 14px;
  }
}