/* ==========================================================================
   Site styles — loaded after minima's main.css (see _includes/head.html).

   Contents
     1. Settings: colours & fonts   ← change the look of the whole site here
     2. Base (text, links, headings)
     3. Header & menu
     4. Footer
     5. Illustrations (cartoon + coloured shapes) & page headers
     6. Home: intro & "Updates" newspaper clipping
     7. Shared pieces (list headings, buttons, labels)
     8. Publications
     9. Presentations
    10. Teaching
    11. CV
    12. Research
    13. Small screens (phones)
   ========================================================================== */


/* 1. SETTINGS ------------------------------------------------------------- */
:root {
  /* Palette (Kandinsky-like primaries on paper) */
  --ink: #1d1d1f;        /* text, outlines */
  --muted: #5f6368;      /* secondary text */
  --line: #e4e1da;       /* thin separators */
  --paper: #fbfaf7;      /* page background */
  --card: #ffffff;       /* boxes */
  --newsprint: #f3eee2;  /* "Updates" clipping */
  --blue: #1f4fa3;
  --red: #d6402b;
  --yellow: #f2c230;
  --orange: #ee8a2a;
  --green: #2f8f5b;

  /* Fonts (Source Sans 3, Space Grotesk and Playfair are loaded from Google Fonts in _includes/head.html) */
  --font-text: "Source Sans 3", "Helvetica Neue", Arial, sans-serif;     /* body text */
  --font-heading: "Helvetica Neue", Helvetica, Arial, sans-serif;        /* page titles, section titles, your name */
  --font-title: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;    /* logo, menu, small labels */
  --font-news: "Playfair Display", Georgia, serif;                       /* "Updates" masthead */
  /* Width of the page content */
  --page-width: 980px;
}


/* 2. BASE ----------------------------------------------------------------- */
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 17px;
}
.wrapper { max-width: calc(var(--page-width) - 60px); }
h1, h2, h3, h4, .post-title { font-family: var(--font-heading); letter-spacing: -0.01em; }
.site-title, .site-nav { font-family: var(--font-title); }
.post-title { font-size: 2.4rem; font-weight: 700; }
.post-content h2 { font-size: 1.5rem; font-weight: 700; }
a { color: var(--blue); }
a:hover { color: var(--red); }
.note { color: var(--muted); font-size: 0.9rem; }


/* 3. HEADER & MENU -------------------------------------------------------- */
.site-header {
  background: var(--paper);
  border-top: 5px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.site-title, .site-title:visited {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--ink);
}
.site-logo { width: 30px; height: 30px; }
.site-nav .page-link {
  color: var(--ink);
  font-weight: 600;
  padding-bottom: 2px;
  border-bottom: 3px solid transparent;
}
.site-nav .page-link:hover { color: var(--ink); text-decoration: none; border-bottom-color: var(--yellow); }
.site-nav .page-link.is-active { border-bottom-color: var(--red); }


/* 4. FOOTER --------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding: 1.2rem 0; font-size: 0.9rem; }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 1.2rem; }
.footer-name { color: var(--muted); margin-right: auto; }
.footer-links { list-style: none; margin: 0; display: flex; gap: 1.2rem; }


/* 5. ILLUSTRATIONS --------------------------------------------------------
   Markup: _includes/illustration.html.
   - "style" (illustration--yellow/blue/red) sets the colours of the shapes behind.
   - "offset" (offset--red/orange/...) sets the colour of the offset outline
     around the drawing ("screen-print" effect, made with drop-shadow). */
.illustration {
  --shape-main: var(--yellow);
  --shape-second: var(--blue);
  --shape-third: var(--red);
  --offset: var(--red);
  position: relative;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}
.illustration--blue { --shape-main: var(--blue); --shape-second: var(--yellow); --shape-third: var(--red); }
.illustration--red  { --shape-main: var(--red);  --shape-second: var(--yellow); --shape-third: var(--blue); }

.offset--red    { --offset: var(--red); }
.offset--orange { --offset: var(--orange); }
.offset--blue   { --offset: var(--blue); }
.offset--green  { --offset: var(--green); }
.offset--yellow { --offset: var(--yellow); }

.illustration-shapes {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.illustration-shapes > * { mix-blend-mode: multiply; }
.shape-main   { fill: var(--shape-main); }
.shape-second { fill: var(--shape-second); opacity: 0.85; }
.shape-third  { fill: var(--shape-third); }
.shape-accent { fill: var(--ink); }
.shape-line   { stroke: var(--ink); stroke-width: 2.5; }

.illustration img {
  position: relative;
  max-height: 440px;
  width: auto;
  filter: drop-shadow(8px 6px 0 var(--offset));
  transition: transform 0.3s;
}
.illustration:hover img { transform: rotate(-2deg); }

/* Header of inner pages: title + intro on the left, illustration on the right.
   Shown when the page sets `illustration:` in its front matter (see _layouts/page.html). */
.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(180px, 1fr);
  gap: 2rem;
  align-items: center;
  margin: 0.5rem 0 1.5rem;
}
.page-hero .illustration img { max-height: 300px; }
.page-intro { color: var(--muted); line-height: 1.55; }
.page-intro p { margin-bottom: 0.8rem; }
.page-intro .tag { vertical-align: 0.1em; margin-left: 0.2rem; }


/* 6. HOME ----------------------------------------------------------------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(220px, 1fr);
  gap: 2.5rem;
  align-items: center;
  margin: 1rem 0 2.5rem;
}
.hero-text h1 { font-size: 2.6rem; font-weight: 700; margin-bottom: 0.2rem; }
/* Job title under the name (the yellow stroke comes from .highlight, section 7) */
.hero-role { font-family: var(--font-title); font-weight: 500; margin: 0.2rem 0 1.4rem; }
.hero-text p { line-height: 1.6; }
.hero-links a {
  display: inline-block;
  margin: 0.3rem 0.4rem 0 0;
  padding: 0.25rem 0.8rem;
  border: 2px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}
.hero-links a:nth-child(4n+1):hover { background: var(--yellow); }
.hero-links a:nth-child(4n+2):hover { background: var(--blue); color: #fff; }
.hero-links a:nth-child(4n+3):hover { background: var(--red); color: #fff; }
.hero-links a:nth-child(4n+4):hover { background: var(--ink); color: #fff; }

/* "Updates": a newspaper clipping on the page, with a coloured offset
   like the illustrations (change --clipping-offset to var(--yellow), var(--orange)...) */
.clipping {
  --clipping-offset: var(--blue);
  position: relative;
  background: var(--newsprint);
  padding: 1.2rem 1.5rem 1rem;
  margin: 1rem 0 2.5rem;
  box-shadow: 9px 8px 0 var(--clipping-offset);
  transform: rotate(-0.6deg);
}
.clipping-head {
  text-align: center;
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 0.3rem 0 0.2rem;
  margin-bottom: 0.5rem;
}
.post-content .clipping-title, .clipping-title {
  font-family: var(--font-news);
  font-weight: 900;
  font-size: 1.6rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0;
  line-height: 1.1;
}
.clipping-list { list-style: none; margin: 0; }
.clipping-list li {
  display: flex;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px dotted #b9b2a3;
  line-height: 1.45;
}
.clipping-list li:last-child { border-bottom: 0; }
.clipping-when {
  flex: 0 0 6rem;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--blue);
  padding-top: 0.1rem;
}

/* Design credits at the bottom of the home page (text: `credits:` in index.md) */
.credits { color: var(--muted); font-size: 0.9rem; line-height: 1.5; margin: 0 0 1.5rem; }
.credits strong { color: var(--muted); }


/* 7. SHARED PIECES -------------------------------------------------------- */
/* Section headings used in lists (publications, teaching, CV) */
.list-heading {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 1.8rem 0 0.7rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--ink);
}
/* "Highlighter pen" stroke behind a text: a slightly tilted yellow band with uneven ends.
   Markdown: add {: .highlight} on the line after a paragraph or title.
   HTML: <span class="highlight">some text</span> */
.highlight {
  position: relative;
  z-index: 0;
  display: inline-block;
  color: var(--ink);
  padding: 0 0.3rem;
}
.highlight::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: -0.2rem;
  right: -0.4rem;
  top: 0.35em;          /* lower = covers more of the text height */
  bottom: -0.05em;
  background: var(--yellow);
  opacity: 0.85;
  border-radius: 0.6em 0.25em 0.5em 0.2em;
  transform: rotate(-1.2deg) skewX(-12deg);   /* the tilt */
}
/* Yellow box with a hard shadow: .btn for links ("Download CV"),
   .sticker for titles or text (Markdown: {: .sticker} after a title) */
.btn, .sticker {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border: 2px solid var(--ink);
  background: var(--yellow);
  color: var(--ink) !important;
  font-weight: 700;
  text-decoration: none !important;
  box-shadow: 3px 3px 0 var(--ink);
}
.btn:hover { transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--ink); }
.post-content h2.sticker { font-size: 1.15rem; margin: 1.6rem 0 0.9rem; }
/* Small red warning word, e.g. "Out-of-date" */
.warning { color: var(--red); font-weight: 700; }
/* Blue link with a small arrow head before it, like "Summary" (add class="arrow-link" to any <a>) */
.arrow-link { color: var(--blue); font-weight: 600; }
.arrow-link::before { content: "\25B6"; font-size: 0.7em; margin-right: 0.35em; vertical-align: 0.1em; }
/* Small coloured labels (presentations): talk = blue, poster = red, anything else = yellow */
.tag {
  flex: 0 0 auto;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  color: var(--ink);
  background: var(--yellow);
}
.tag--talk { background: var(--blue); color: #fff; }
.tag--poster { background: var(--red); color: #fff; }


/* 8. PUBLICATIONS --------------------------------------------------------- */
.pub {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: 4px;
  padding: 0.7rem 1rem;
  margin-bottom: 0.7rem;
}
.pub-body { flex: 1; min-width: 0; }
.post-content .pub-title { font-size: 1.02rem; margin: 0 0 0.2rem; line-height: 1.35; }
.pub-authors, .pub-venue { margin: 0; font-size: 0.9rem; line-height: 1.4; color: var(--muted); }
.pub-authors strong { color: var(--ink); }
.pub-links { margin-top: 0.3rem; font-size: 0.85rem; }
.pub-links a, .talk-links a { margin-right: 0.8rem; font-weight: 600; }
.pub-abstract, .talk-details { margin-top: 0.3rem; font-size: 0.88rem; }
.pub-abstract summary, .talk-details summary { cursor: pointer; color: var(--blue); font-weight: 600; }
.pub-abstract p, .talk-details p { margin: 0.4rem 0 0; text-align: justify; line-height: 1.5; }
.pub-pdf { flex: 0 0 auto; color: var(--red); margin-top: 0.15rem; transition: transform 0.15s; }
.pub-pdf:hover { transform: rotate(-6deg) scale(1.08); }


/* 9. PRESENTATIONS -------------------------------------------------------- */
.timeline-year { display: flex; gap: 1.2rem; }
.post-content .timeline-year .year {
  flex: 0 0 3.5rem;
  font-size: 1.1rem;
  margin: 0.6rem 0 0;
}
.talks { list-style: none; margin: 0 0 0.6rem; flex: 1; min-width: 0; border-left: 2px solid var(--ink); padding-left: 1rem; }
.talk { padding: 0.55rem 0; border-bottom: 1px solid var(--line); }
.talk:last-child { border-bottom: 0; }
.talk-head { display: flex; gap: 0.6rem; align-items: baseline; }
.post-content .talk-title { font-size: 1rem; margin: 0; line-height: 1.35; }
.talk-event { margin: 0.15rem 0 0; font-size: 0.88rem; color: var(--muted); line-height: 1.4; }
.talk-links { margin-top: 0.25rem; font-size: 0.85rem; }
.btn-video { color: var(--red) !important; }


/* 10. TEACHING ------------------------------------------------------------ */
.courses { list-style: none; margin: 0; }
.course { display: flex; gap: 1rem; padding: 0.5rem 0; border-bottom: 1px solid var(--line); }
.course-year { flex: 0 0 6.5rem; font-weight: 700; font-size: 0.9rem; color: var(--red); padding-top: 0.1rem; }
.course-body { flex: 1; min-width: 0; }
.post-content .course-title { font-size: 1rem; margin: 0; }
.course-hours { font-size: 0.75rem; font-weight: 700; background: var(--yellow); padding: 0.05rem 0.4rem; border-radius: 3px; margin-left: 0.3rem; }
.course-meta { margin: 0.1rem 0 0; font-size: 0.88rem; color: var(--muted); line-height: 1.4; }

/* 11. CV ------------------------------------------------------------------ */
.cv-actions { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; align-items: center; font-size: 0.9rem; color: var(--muted); }
.cv-section .list-heading { margin-top: 1.5rem; }
.cv-entry { display: flex; gap: 1rem; padding: 0.3rem 0; line-height: 1.4; }
.cv-date { flex: 0 0 8rem; font-size: 0.88rem; color: var(--muted); padding-top: 0.05rem; }
.cv-body { flex: 1; min-width: 0; }
.cv-title { font-weight: 600; }
.cv-org, .cv-details { display: block; font-size: 0.9rem; color: var(--muted); }
.cv-link { font-size: 0.85rem; margin-left: 0.4rem; }


/* 12. RESEARCH ------------------------------------------------------------ */
.topic { margin-bottom: 1.6rem; }
.topic h2 { margin-bottom: 0.4rem; }
/* A small Kandinsky shape before each topic title. Shapes repeat every 5 topics,
   so a new <section class="topic"> gets one automatically. */
.topic h2::before {
  content: "";
  display: inline-block;
  width: 0.9em;
  height: 0.9em;
  margin-right: 0.5rem;
  vertical-align: -0.05em;
}
.topic:nth-of-type(5n+1) h2::before { background: var(--yellow); border-radius: 50%; }
.topic:nth-of-type(5n+2) h2::before { background: var(--blue); clip-path: polygon(50% 0, 100% 100%, 0 100%); }
.topic:nth-of-type(5n+3) h2::before { background: var(--red); transform: rotate(45deg) scale(0.8); }
.topic:nth-of-type(5n+4) h2::before { background: var(--ink); border-radius: 1em 1em 0 0; height: 0.45em; }
.topic:nth-of-type(5n+5) h2::before { border: 3px solid var(--green); border-radius: 50%; box-sizing: border-box; }
.topic p { text-align: justify; }
.topic-when { font-size: 0.8rem; font-weight: 600; color: var(--red); margin-left: 0.4rem; white-space: nowrap; }


/* 13. SMALL SCREENS ------------------------------------------------------- */
@media (max-width: 700px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .hero .illustration { order: -1; }
  .page-hero { grid-template-columns: minmax(0, 1fr); gap: 0.5rem; }
  .page-hero .illustration img { max-height: 220px; }
  .illustration img { max-height: 300px; }
  .hero-text h1 { font-size: 2rem; }
  .clipping { transform: none; padding: 1rem; }
  .clipping-list li, .course, .cv-entry, .timeline-year { flex-direction: column; gap: 0.15rem; }
  .clipping-when, .course-year, .cv-date, .post-content .timeline-year .year { flex-basis: auto; }
  .talk-head { flex-direction: column; gap: 0.2rem; }
}