:root {
  --ink: #1c1b19;
  --paper: #faf7f2;
  --paper-raised: #ffffff;
  --accent: #c1502e;
  --accent-ink: #ffffff;
  --line: #e4ddd2;
  --muted: #6b6459;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Georgia", "Iowan Old Style", serif;
  line-height: 1.55;
}

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

header.site-header {
  border-bottom: 1px solid var(--line);
  padding: 32px 0 24px;
}

.site-header-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-logo-link {
  flex-shrink: 0;
  line-height: 0;
}

.site-logo {
  display: block;
  width: 168px;
  height: auto;
}

.site-title {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.01em;
}

.site-tagline {
  margin: 4px 0 20px;
  color: var(--muted);
  font-style: italic;
}

nav.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

nav.site-nav a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

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

main {
  padding: 48px 0 80px;
}

section {
  margin-bottom: 64px;
}

section:last-child {
  margin-bottom: 0;
}

.section-heading {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 20px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card h3 {
  margin: 0;
  font-size: 1.3rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  flex-grow: 1;
}

.btn {
  display: inline-block;
  align-self: flex-start;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--accent-ink);
  background: var(--accent);
  padding: 10px 18px;
  border-radius: 3px;
}

.btn:hover {
  opacity: 0.9;
}

.btn-secondary {
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
}

.intro-lede {
  font-size: 1.15rem;
  max-width: 640px;
}

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.9rem;
  color: var(--muted);
}

footer.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}

.footer-contact {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.social-link {
  display: inline-flex;
  color: var(--muted);
  line-height: 0;
}

.social-link:hover {
  color: var(--accent);
}

.social-link .icon-instagram {
  width: 20px;
  height: 20px;
}

footer.site-footer a {
  color: var(--muted);
}

/* Comic reader */
.comic-carousel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.carousel-viewport {
  max-width: 432px;
  width: 100%;
}

.carousel-slide {
  display: none;
  margin: 0;
}

.carousel-slide.is-active {
  display: block;
}

.carousel-slide img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 3px;
  display: block;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.carousel-btn {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 8px 16px;
  cursor: pointer;
}

.carousel-btn:hover {
  opacity: 0.9;
}

.carousel-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.carousel-caption {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

/* Portfolio case studies */
.logo-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 32px;
  margin: 20px 0 24px;
  padding: 20px 24px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.logo-strip img {
  height: 28px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.75;
}

.case-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.case-study {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
}

.case-study h3 {
  margin: 0 0 4px;
  font-size: 1.3rem;
}

.case-meta {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.badge-logo {
  height: 16px;
  width: auto;
  vertical-align: middle;
  filter: grayscale(1);
  opacity: 0.8;
}

.case-media {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.case-media img,
.case-media video {
  max-height: 340px;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 3px;
  flex: 0 1 auto;
}

.case-media video {
  max-height: none;
  width: 100%;
  max-width: 360px;
}

.case-fields {
  margin: 0;
}

.case-fields dt {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin: 14px 0 4px;
}

.case-fields dt:first-child {
  margin-top: 0;
}

.case-fields dd {
  margin: 0;
}

/* A link button inside a case study field */
.case-fields .case-link {
  margin: 12px 0 0;
}

.case-tip {
  margin: 16px 0 0;
  padding: 12px 16px;
  background: var(--paper);
  border-left: 3px solid var(--accent);
  font-style: italic;
  color: var(--muted);
}

/* Games UX Blog */
.blog-archive {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.blog-post {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
}

.blog-post h3 {
  margin: 0 0 4px;
  font-size: 1.25rem;
}

.blog-post .post-date {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 14px;
}

.blog-post img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 3px;
  display: block;
  margin-bottom: 14px;
}

.blog-post p {
  margin: 0 0 14px;
}

/* A small series label above a post's heading, e.g. "Games UX in Movies and TV" */
.blog-post .post-label {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 4px;
}

/* Credit line under an embedded video or image */
.blog-post .post-credit {
  margin: -6px 0 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Quotes inside a post */
.blog-post .post-quote {
  margin: 0 0 14px;
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--accent);
  font-style: italic;
}

.blog-post .video-embed {
  position: relative;
  width: 100%;
  max-width: 560px;
  aspect-ratio: 16 / 9;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.blog-post .video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 3px;
  padding: 8px 14px;
  cursor: pointer;
}

.like-btn:hover:not(:disabled) {
  background: rgba(193, 80, 46, 0.08);
}

.like-btn.liked {
  background: var(--accent);
  color: var(--accent-ink);
  cursor: default;
}

.like-btn:disabled {
  opacity: 0.85;
}

.like-btn .heart {
  font-size: 0.95rem;
}

/* Horoscopes */
.horoscope-meta {
  font-size: 1.15rem;
  max-width: 640px;
  margin: 0 0 28px;
}

.horoscope-grid {
  display: grid;
  gap: 14px;
}

.horoscope-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 20px;
}

.horoscope-card summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

.horoscope-card summary::-webkit-details-marker {
  display: none;
}

.horoscope-card summary img {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.horoscope-sign-name {
  font-size: 1.05rem;
}

.horoscope-sign-dates {
  display: block;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  color: var(--muted);
}

.horoscope-card summary::after {
  content: "+";
  margin-left: auto;
  font-size: 1.4rem;
  color: var(--accent);
}

.horoscope-card[open] summary::after {
  content: "\2212";
}

.horoscope-body {
  padding: 4px 0 20px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.horoscope-body p {
  margin: 0 0 12px;
}

.horoscope-extra {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin: 4px 0;
}

.page-like-bar {
  display: flex;
  justify-content: flex-end;
  margin: 0 0 24px;
}

.page-disclaimer {
  margin-top: 28px;
  font-size: 0.85rem;
  font-style: italic;
  color: var(--muted);
}

/* Jumbles */
.jumble-like-bar {
  margin-bottom: 12px;
}

.jumble-heading {
  margin-bottom: 10px;
}

.jumble-intro {
  margin: 8px 0 16px;
  max-width: none;
  font-size: 1rem;
}

.jumble-embed {
  margin-bottom: 48px;
}

.jumble-embed:last-child {
  margin-bottom: 0;
}

.jumble-model-link {
  margin: -24px 0 24px;
}

/* FIN 579 Vibe Coding Exercise (CSV checker) */
.csv-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 36px 20px;
  border: 2px dashed var(--line);
  border-radius: 4px;
  background: var(--paper);
  cursor: pointer;
  text-align: center;
}

.csv-drop:hover,
.csv-drop.is-over,
.csv-drop:focus-within {
  border-color: var(--accent);
}

.csv-drop input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.csv-drop-title {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-ink);
  background: var(--accent);
  padding: 10px 18px;
  border-radius: 3px;
}

.csv-drop-hint,
.csv-privacy,
.csv-note {
  color: var(--muted);
  font-size: 0.95rem;
}

.csv-privacy {
  margin: 12px 0 0;
  font-style: italic;
}

.csv-status {
  margin: 8px 0 0;
  font-weight: bold;
}

.csv-status:empty {
  display: none;
}

.csv-results {
  margin-top: 40px;
}

.csv-var-list {
  margin: 8px 0 0;
  padding-left: 1.6em;
  columns: 2 220px;
}

.csv-table-wrap {
  overflow-x: auto;
  margin-top: 8px;
}

.csv-table {
  width: 100%;
  border-collapse: collapse;
}

.csv-table th {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: normal;
  text-align: left;
}

.csv-table th,
.csv-table td {
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.csv-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.csv-table .jm-group-row th {
  text-align: center;
  white-space: nowrap;
  padding: 8px 12px;
  border-bottom: 2px solid var(--line);
  border-left: 1px solid var(--line);
}

.csv-table .jm-group-row th:first-child {
  border-left: 0;
}

.csv-tag {
  color: var(--muted);
}

.csv-tag-num {
  color: var(--ink);
}

.csv-missing {
  color: var(--accent);
}

.csv-note {
  margin: 12px 0 0;
}

.csv-select-label {
  display: block;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 8px 0 6px;
}

.csv-select {
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 8px 10px;
  max-width: 100%;
  min-width: 220px;
}

.csv-select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.csv-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 20px 0 0;
}

.csv-stats div {
  flex: 1 1 180px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
}

.csv-stats dt {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.csv-stats dd {
  margin: 4px 0 0;
  font-size: 1.6rem;
  font-variant-numeric: tabular-nums;
}

/* FIN 579 Jumble Difficulty Model */
.jm-run:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.jm-mode-note {
  margin: 14px 0 0;
  color: var(--muted);
}

.jm-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
}

.jm-tile {
  flex: 1 1 180px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
}

.jm-tile-value {
  font-size: 1.8rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.jm-tile-label {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 4px;
}

.jm-var-list {
  margin: 10px 0;
  padding-left: 1.4em;
  color: var(--muted);
}

.jm-var-list li {
  margin-bottom: 4px;
}

.jm-var-list strong {
  color: var(--ink);
}

.jm-equation {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin: 8px 0 12px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 3px;
  font-size: 1.25rem;
  font-variant-numeric: tabular-nums;
}

.jm-eq-term {
  white-space: nowrap;
}

.jm-equation-small {
  font-size: 1rem;
  margin-top: 12px;
}

.jm-eq-total {
  font-weight: bold;
}

/* Wide tables scroll sideways inside their wrapper instead of squeezing on phones */
#weights-table {
  min-width: 520px;
}

#data-table {
  min-width: 660px;
}

.jm-form {
  margin-top: 12px;
}

.jm-answers {
  display: grid;
  gap: 4px;
}

.jm-answer-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.jm-input {
  font: inherit;
  flex: 1 1 220px;
  min-width: 0;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 8px 10px;
}

.jm-input:focus,
.jm-topic:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.jm-topic {
  min-width: 160px;
  flex: 0 1 180px;
}

.jm-run {
  border: 0;
  cursor: pointer;
  margin-top: 8px;
}

.jm-result-label {
  font-size: 1.6rem;
  margin: 16px 0 0;
}

/* Open/close sections on the model page */
.jm-section > summary {
  position: relative;
  padding-right: 2.2em;
  cursor: pointer;
  list-style: none;
}

.jm-section > summary::-webkit-details-marker {
  display: none;
}

.jm-section > summary::after {
  content: "+";
  position: absolute;
  top: 0;
  right: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent);
}

.jm-section[open] > summary::after {
  content: "\2212";
}

.jm-section > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.jm-section > summary h3 {
  margin: 0;
}

.jm-section[open] > summary {
  margin-bottom: 12px;
}

/* The Pitch: the two-page written solution, shown as written */
.pitch p {
  margin: 0 0 14px;
}

.pitch-byline {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.9rem;
  color: var(--muted);
}

.pitch-title {
  margin: 0 0 14px;
  font-size: 1.15rem;
  text-wrap: balance;
}

.pitch .pitch-equation {
  font-size: 1.05rem;
}

.pitch-circle {
  margin: 0 0 14px;
  padding-left: 1.4em;
  display: grid;
  gap: 12px;
}

.pitch-circle blockquote {
  margin: 6px 0 0;
  padding: 2px 0 2px 14px;
  border-left: 3px solid var(--line);
  color: var(--muted);
}

.pitch-circle blockquote p {
  margin: 0 0 8px;
}

.pitch-circle blockquote p:last-child {
  margin-bottom: 0;
}

/* The results table has many columns, so it scrolls sideways inside its box */
#results-table {
  min-width: 1000px;
}

.jm-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

@media (max-width: 560px) {
  .jm-equation {
    font-size: 1.05rem;
  }
}

@media (max-width: 480px) {
  .site-title {
    font-size: 1.6rem;
  }

  .site-logo {
    width: 132px;
    height: auto;
  }
}