/* ============================================================
   CASEY J. WICHMAN — ACADEMIC WEBSITE
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Courier+Prime:ital,wght@0,400;0,700;1,400&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #eef0e4;
  --bg-nav:   #e2e6d4;
  --text:     #1a1a1a;
  --muted:    #5a5f4a;
  --accent:   #1e4d2b;
  --accent-h: #2d7a42;
  --rule:     #a0a88a;
  --card-bg:  #e8ebe0;
  --card-hover: #dde3d1;
  --max-w:    780px;
  --font:     'Courier Prime', 'Courier New', Courier, monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
}

/* ---------- Nature scene ---------- */
.nature-scene {
  font-size: 0.7rem;
  line-height: 1.25;
  white-space: pre;
  overflow-x: auto;
  color: var(--accent);
  margin-top: 0;
  margin-bottom: 0.3rem;
  opacity: 0;
  animation: fadeDownMuted 0.8s ease forwards 0.1s;
}

@keyframes fadeDownMuted {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.wv { display: inline-block; animation-iteration-count: infinite; animation-timing-function: ease-in-out; animation-fill-mode: both; }
@keyframes waveUp   { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-2px)} }
@keyframes waveDown { 0%,100%{transform:translateY(0)} 50%{transform:translateY(2px)}  }

/* ---------- Header ---------- */
header {
  max-width: var(--max-w);
  margin: 1rem auto 0.5rem auto;
  padding: 0 1.5rem;
}

.site-name {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: bold;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-top: 0;
  margin-bottom: 0rem;
  opacity: 0;
  animation: fadeDown 0.8s ease forwards 0.4s;
}

.tagline {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 0.2rem;
  opacity: 0;
  animation: fadeDown 0.8s ease forwards 0.6s;
}

.cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
  color: var(--accent);
}

@keyframes blink    { 0%,100%{opacity:1} 50%{opacity:0} }
@keyframes fadeDown { from{opacity:0;transform:translateY(-10px)} to{opacity:1;transform:translateY(0)} }

/* ---------- Sticky Nav ---------- */
#sticky-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 0.6rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.4rem;
  font-size: 0.9rem;
}

#sticky-nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}

#sticky-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}

#sticky-nav a:hover,
#sticky-nav a.active { color: var(--accent); }

#sticky-nav a:hover::after,
#sticky-nav a.active::after { width: 100%; }

/* ---------- Themes bar ---------- */
.themes-bar {
  background: var(--bg-nav);
  border-bottom: 1px solid var(--rule);
  padding: 0.35rem 1.5rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.themes-label { color: var(--accent); margin-right: 0.4rem; }

/* ---------- Main ---------- */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

/* ---------- Fade-in on scroll ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  margin-bottom: 3.5rem;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ---------- Draw-in separator ---------- */
.separator.draw-in {
  position: relative;
  height: 1em;
  overflow: hidden;
  margin-bottom: 1rem;
}

.separator.draw-in::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  height: 1px;
  width: 0;
  background: repeating-linear-gradient(
    to right,
    var(--rule) 0px,
    var(--rule) 6px,
    transparent 6px,
    transparent 10px
  );
  transition: width 0.8s ease 0.2s;
}

.separator.draw-in.visible::after {
  width: 100%;
}

/* ---------- Headings ---------- */
h2 {
  font-size: 1.15rem;
  text-transform: lowercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}
h3 {
  font-size: 1rem;
  font-weight: bold;
  margin-top: 1.8rem;
  margin-bottom: 0.2rem;
}

/* ---------- Separator ---------- */
.separator {
  color: var(--rule);
  font-size: 0.85rem;
  margin-bottom: 1rem;
  overflow: hidden;
  white-space: nowrap;
}

/* ---------- Text & links ---------- */
p { margin-bottom: 1rem; }
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-h); text-decoration: underline; }
em { color: var(--muted); }

/* ---------- Lists ---------- */
ul { list-style: none; padding-left: 0; margin-bottom: 1rem; }
ul li {
  padding-left: 1.5em;
  margin-bottom: 0.6rem;
  position: relative;
  transition: transform 0.15s;
}
ul li::before { content: '--'; position: absolute; left: 0; color: var(--rule); }
ul li:hover { transform: translateX(4px); }

/* ---------- Paper cards ---------- */
.paper-card {
  border: 1px solid var(--rule);
  margin-bottom: 0.6rem;
  background: var(--card-bg);
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.paper-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateX(3px);
}

.paper-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.7rem 0.9rem;
  cursor: pointer;
}

.paper-meta {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
}

.paper-title {
  display: block;
  font-size: 1rem;
  font-weight: bold;
  color: var(--accent);
  line-height: 1.4;
  margin-bottom: 0.2rem;
  text-decoration: none;
  transition: color 0.15s;
}

a.paper-title:hover {
  color: var(--text);
  text-decoration: underline;
}

.paper-row {
  font-size: 0.87rem;
  line-height: 1.4;
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  color: var(--text);
}

.paper-label {
  color: var(--accent);
  font-weight: bold;
  font-size: 0.8rem;
  flex-shrink: 0;
  letter-spacing: 0.03em;
}

.paper-toggle {
  background: none;
  border: 1px solid var(--rule);
  color: var(--accent);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1;
  width: 1.6rem;
  height: 1.6rem;
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
  margin-top: 0.1rem;
}

.paper-toggle:hover {
  background: var(--accent);
  color: var(--bg);
}

.paper-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.paper-body p {
  padding: 0 0.9rem;
  margin-bottom: 0;
}

.paper-body .paper-abstract {
  font-size: 0.88rem;
  color: var(--muted);
  padding-top: 0.6rem;
  border-top: 1px solid var(--rule);
  text-align: justify;
  line-height: 1.5;
}

.paper-card.is-open .paper-body {
  background: var(--card-hover);
}

.paper-body .paper-links {
  font-size: 0.82rem;
  padding-bottom: 0.7rem;
  padding-top: 0.4rem;
}

/* ---------- Paper icon ---------- */
.paper-icon {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  padding-top: 0.15rem;
}

.paper-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ---------- Teaching ---------- */
.teaching-course {
  margin-bottom: 1.2rem;
}

.course-title {
  font-weight: bold;
  font-size: 1rem;
  margin-bottom: 0.3rem;
  color: var(--accent);
}

.course-note {
  font-weight: normal;
  font-size: 0.88rem;
  color: var(--muted);
}

.teaching-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.2rem;
  font-style: italic;
}

/* ---------- WIP cards ---------- */
.wip-card {
  border: 1px solid var(--rule);
  background: var(--card-bg);
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.6rem;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
}

.wip-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateX(3px);
}

.wip-card .paper-title {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-weight: bold;
  font-size: 1rem;
  line-height: 1.4;
}

/* ---------- Teaching cards ---------- */
.teaching-card {
  border: 1px solid var(--rule);
  background: var(--card-bg);
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.6rem;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
  cursor: default;
}

.teaching-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateX(3px);
}

.teaching-card .paper-title {
  margin-bottom: 0.25rem;
}

/* ---------- Other writing cards ---------- */
.writing-card {
  border: 1px solid var(--rule);
  background: var(--card-bg);
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.6rem;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
}

.writing-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateX(3px);
}

.writing-title {
  display: block;
  font-size: 1rem;
  font-weight: bold;
  color: var(--accent);
  text-decoration: none;
  line-height: 1.4;
  margin-bottom: 0.2rem;
  transition: color 0.15s;
}

a.writing-title:hover {
  color: var(--text);
  text-decoration: underline;
}

/* ---------- News cards ---------- */
.news-card {
  border: 1px solid var(--rule);
  background: var(--card-bg);
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.6rem;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.news-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateX(3px);
}

.news-card h4 {
  font-size: 1rem;
  font-weight: bold;
  color: var(--accent);
  margin: 0 0 0.5rem 0;
  letter-spacing: 0.04em;
}

.news-card ul {
  margin: 0;
  padding-left: 1.2rem;
}

.news-card ul li {
  font-size: 0.88rem;
  line-height: 1.5;
  margin-bottom: 0.3rem;
}

/* ---------- Footer ---------- */
footer {
  max-width: var(--max-w);
  margin: 0 auto 3rem auto;
  padding: 0 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}
footer p { margin-top: 0.5rem; }

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .ascii-header { font-size: 0.38rem; }
  .nature-scene { font-size: 0.5rem; }
  .site-name { font-size: 1.7rem; }
  #sticky-nav { position: fixed; top: 0; left: 0; right: 0; padding: 0.3rem 1rem; font-size: 0.78rem; }
  .themes-bar { padding: 0.2rem 1rem; font-size: 0.78rem; }
  body { font-size: 0.95rem; padding-top: 3rem; }
  .paper-icon { width: 1.2rem; height: 1.2rem; }
}