/* ============================================
   Kevin Stauss — Portfolio
   A well-typeset essay that happens to be a website.
   ============================================ */

/* --- Custom Properties --- */

:root {
  --bg: #fafaf9;
  --text: #1a1a1a;
  --text-secondary: #6b6b6b;
  --accent: #1a4a4a;
  --accent-hover: #0f3333;
  --border: #e5e2dd;
  --surface: #f3f1ed;

  --font-heading: 'Instrument Serif', Georgia, serif;
  --font-body: Georgia, 'Times New Roman', Times, serif;
  --font-ui: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --content-width: 680px;
  --nav-width: 960px;
  --page-width: 820px;

  --body-size: 19px;
  --body-lh: 1.72;
}


/* --- Reset --- */

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--body-size);
  line-height: var(--body-lh);
  color: var(--text);
  background-color: var(--bg);
  box-shadow: inset 0 0 120px rgba(0,0,0,0.02);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}


/* --- Base Typography --- */

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.25;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.015em;
  margin-bottom: 0.4em;
  text-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

h2 {
  font-size: 1.35rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.45;
  margin-bottom: 1.8em;
}

h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  font-variant: small-caps;
  letter-spacing: 0.05em;
  text-transform: lowercase;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 3em;
  margin-bottom: 1em;
}

p {
  margin-bottom: 1.2em;
}

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

strong {
  font-weight: 700;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2.5em 0;
  color: var(--text);
}

blockquote p {
  font-style: normal;
}


/* --- Links --- */

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}


/* --- Layout --- */

.content-width {
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.page-width {
  max-width: var(--page-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}


/* --- Navigation --- */

.site-header {
  padding: 2rem 0;
}

.nav {
  max-width: var(--nav-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.nav-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-name:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

.nav-links a.active {
  color: var(--text);
}


/* --- Intro Section (Homepage) --- */

.intro {
  padding: 4rem 0 5rem;
}

.intro h1 {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
}

.intro p {
  margin-bottom: 1.3em;
}


/* --- Drop Cap --- */

.intro .drop-cap::first-letter {
  font-family: var(--font-heading);
  float: left;
  font-size: 3.6em;
  line-height: 0.8;
  padding-right: 0.08em;
  padding-top: 0.07em;
  color: var(--text);
}


/* --- Section Divider --- */

.section-rule {
  border: none;
  width: 50px;
  height: 1px;
  background-color: var(--accent);
  margin: 3.5rem auto;
}


/* --- GX Footnote --- */

.gx-footnote {
  margin-top: 3rem;
  padding-left: 1.25rem;
  border-left: 3px solid var(--accent);
  font-size: 0.92rem;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.65;
}


/* --- Case Study Grid (Homepage) --- */

.case-studies {
  padding: 2rem 0 6rem;
}

.case-study-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.case-study-card {
  padding: 2rem 1.25rem;
  border-top: 1px solid var(--border);
  margin-left: -1.25rem;
  margin-right: -1.25rem;
  transition: background-color 0.2s ease-out;
}

.case-study-card:last-child {
  border-bottom: 1px solid var(--border);
}

.case-study-card:hover {
  background-color: var(--surface);
}

.case-study-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-top: 0;
  margin-bottom: 0.6em;
}

.case-study-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0.8em;
}

.case-study-card .read-more {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  color: var(--accent);
  text-decoration: none;
}

.case-study-card .read-more:hover {
  text-decoration: underline;
}

.case-study-card .card-tag {
  display: inline-block;
  font-family: 'SF Mono', SFMono-Regular, ui-monospace, Menlo, Consolas, 'Liberation Mono', monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.6em;
  padding-bottom: 0.6em;
}

.case-study-card .card-tag::after {
  content: '';
  display: block;
  width: 33%;
  height: 1px;
  background: var(--border);
  margin-top: 0.6em;
}

.case-studies-heading {
  font-family: var(--font-heading);
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.05em;
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 2rem;
}


/* --- Case Study Article Pages --- */

.case-study-article {
  padding: 3rem 0 6rem;
}

.case-study-article h1 {
  margin-bottom: 0.3em;
}

.case-study-article h2 {
  margin-bottom: 2.5em;
}

.case-study-article h3 {
  font-size: 1.15rem;
  margin-top: 3.5em;
}

.case-study-article h3:first-of-type::before {
  content: '';
  display: block;
  width: 50px;
  height: 1px;
  background-color: var(--accent);
  margin-bottom: 3.5em;
}

.case-study-article p {
  margin-bottom: 1.3em;
}

/* Lede paragraph — first paragraph after section labels */
.case-study-article .lede {
  font-size: 1.05em;
}

.case-study-meta {
  margin-top: 0;
  margin-bottom: 3em;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.case-study-meta dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem 2rem;
  margin: 0;
}

.case-study-meta .meta-item {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
}

.case-study-meta dt {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  min-width: 5.5rem;
  flex-shrink: 0;
}

.case-study-meta dd {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--text);
  margin: 0;
  line-height: 1.5;
}

.case-study-summary {
  margin-top: 3.5em;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
}

.case-study-summary p {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.case-study-article .outbound-link {
  margin-top: 3.5em;
  padding-left: 1.25rem;
  border-left: 3px solid var(--accent);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

.case-study-article .outbound-link a {
  font-weight: 500;
}


/* --- Back Link --- */

.back-link {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 3rem;
  letter-spacing: 0.01em;
}

.back-link:hover {
  color: var(--text);
  text-decoration: none;
}


/* --- Resume Page --- */

.resume-page {
  padding: 3rem 0 6rem;
}

.resume-page h1 {
  margin-bottom: 0.3em;
}

.resume-page > .content-width > p:first-of-type {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 1.05rem;
  margin-bottom: 3.5rem;
}

.resume-entry {
  margin-bottom: 3rem;
}

.resume-entry h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-top: 0;
  margin-bottom: 0.15em;
}

.resume-entry .role {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
  margin-bottom: 0.8em;
  display: block;
}

.resume-entry p {
  font-size: 0.95rem;
  line-height: 1.65;
}

.resume-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3.5rem 0;
}

.resume-sidebar {
  margin-top: 3.5rem;
  padding: 2rem;
  background-color: var(--surface);
  border-radius: 3px;
}

.resume-sidebar h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text);
  margin-top: 0;
  margin-bottom: 1.2em;
}

.resume-sidebar ul {
  list-style: none;
}

.resume-sidebar li {
  margin-bottom: 1em;
  font-size: 0.92rem;
  line-height: 1.6;
}

.resume-sidebar li strong {
  display: inline;
}

.resume-skills {
  margin-top: 3.5rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.7;
  font-family: var(--font-ui);
}

.resume-skills h3 {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  margin-bottom: 1.2em;
  color: var(--text-secondary);
}

.resume-skills p {
  margin-bottom: 0.4em;
  font-size: 0.85rem;
}


/* --- Footer --- */

.site-footer {
  padding: 5rem 0 4rem;
  border-top: none;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--text-secondary);
  position: relative;
}

.site-footer::before {
  content: '◆';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--bg);
  padding: 0 1rem;
  font-size: 0.5rem;
  color: var(--accent);
  letter-spacing: 0.5em;
}

.site-footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background-color: var(--border);
  z-index: -1;
}

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

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

.footer-email {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.footer-email a {
  color: var(--text);
  font-weight: 500;
}

.footer-email a:hover {
  color: var(--accent);
}

.footer-location {
  margin-bottom: 1.2rem;
}

.footer-links {
  font-size: 0.82rem;
}

.footer-links a {
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-sep {
  margin: 0 0.4em;
  color: var(--border);
}


/* --- Responsive --- */

@media (min-width: 768px) {
  .nav {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
  }

  .case-study-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 0;
  }

  .case-study-card {
    padding: 2rem 1.25rem;
    margin-left: 0;
    margin-right: 0;
    border-bottom: none;
    border-top: 1px solid var(--border);
    grid-column: span 2;
  }

  .case-study-card:nth-child(4) {
    grid-column: 2 / span 2;
  }

  .case-study-card:nth-child(n+4) {
    border-bottom: 1px solid var(--border);
  }

  .case-study-meta dl {
    grid-template-columns: 1fr 1fr;
  }

  .intro h1 {
    font-size: 3.2rem;
  }

  h1 {
    font-size: 2.8rem;
  }

  .site-header {
    padding: 2.5rem 0;
  }
}

@media (min-width: 1024px) {
  .intro h1 {
    font-size: 3.5rem;
  }
}