/* ==========================================================================
   Maximilian Grimm — personal site
   Aesthetic: warm minimal scholarly, all-serif, narrow measure
   ========================================================================== */

:root {
  --paper:   #fbfaf6;   /* warm off-white background */
  --ink:     #1c1917;   /* near-black text */
  --muted:   #6b6259;   /* secondary text, metadata */
  --rule:    #e7e2d6;   /* warm light dividers */
  --accent:  #8c2718;   /* deep oxblood for links */
  --accent-hover: #5a1810;

  --measure: 38rem;     /* content column width */
  --pad-x:   1.5rem;
}

* { box-sizing: border-box; }

html {
  font-size: 18px;       /* slightly larger base; readable for body text */
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "EB Garamond", Georgia, "Times New Roman", serif;
  font-weight: 400;
  font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 3rem var(--pad-x) 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
}

.brand {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 1.4rem;
  font-size: 1rem;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}

.site-header nav a:hover {
  color: var(--accent);
}

.site-header nav a.active {
  color: var(--ink);
}
.site-header nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: var(--ink);
}

.site-header nav .scholar-icon {
  height: 1.1em;
  width: auto;
  vertical-align: -0.2em;
  filter: grayscale(1);
  transition: opacity 120ms ease;
}
.site-header nav a:hover .scholar-icon { opacity: 0.7; }

.site-header nav .email-icon svg {
  width: 1.05em;
  height: 1.05em;
  vertical-align: -0.2em;
}

/* ==========================================================================
   Main
   ========================================================================== */

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 3rem var(--pad-x) 4rem;
}

main p { margin: 0 0 1rem; }

main a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 39, 24, 0.3);
  transition: border-color 120ms ease, color 120ms ease;
}
main a:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}

/* Section headings on research page */
h2.section {
  font-size: 1rem;
  font-weight: 600;
  font-style: italic;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 3rem 0 1.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}
h2.section:first-child { margin-top: 0; }

/* ==========================================================================
   Landing page intro
   ========================================================================== */

.intro {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.portrait {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
  filter: saturate(0.95);
}

.bio p {
  font-size: 1.1rem;
  line-height: 1.65;
}

.bio p:first-child { margin-top: -0.3rem; }

@media (max-width: 600px) {
  .intro {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .portrait { max-width: 180px; }
}

/* ==========================================================================
   Papers
   ========================================================================== */

.paper {
  margin-bottom: 2rem;
}

.paper h3 {
  font-size: 1.18rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
  line-height: 1.3;
  color: var(--ink);
}

.paper .authors {
  font-style: italic;
  color: var(--muted);
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.paper .venue {
  font-size: 0.98rem;
  color: var(--muted);
  margin: 0;
}

.paper details {
  margin-top: 0.6rem;
}

.paper summary {
  cursor: pointer;
  color: var(--accent);
  font-size: 0.95rem;
  font-style: italic;
  display: inline-block;
  list-style: none;
  user-select: none;
}
.paper summary::-webkit-details-marker { display: none; }
.paper summary::before {
  content: "▸ ";
  display: inline-block;
  transition: transform 150ms ease;
}
.paper details[open] summary::before {
  content: "▾ ";
}
.paper summary:hover { color: var(--accent-hover); }

.paper details > p {
  margin: 0.5rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--rule);
  color: #3a342e;
  font-size: 1rem;
  line-height: 1.55;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.5rem var(--pad-x) 3rem;
  border-top: 1px solid var(--rule);
}

.site-footer p {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
}