/**
 * Minimalistic black & white design
 * Adapts to user's display scheme (light/dark mode) via prefers-color-scheme
 */

/* Typography - enhanced legibility */
body {
  font-family: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Mobile responsive - base layout */
.wrapper {
  padding-left: clamp(1rem, 4vw, 1.875rem);
  padding-right: clamp(1rem, 4vw, 1.875rem);
}

.site-nav .page-link:not(:last-child) {
  margin-right: clamp(0.75rem, 2vw, 1.25rem);
}

@media (max-width: 600px) {
  .page-content { padding-top: 1.5rem; padding-bottom: 2rem; }
  .post-list-heading { font-size: 1.5rem; }
  .post-link { font-size: 1.25rem; }
}

/* Shared utilities */
.container { margin: 4rem auto; max-width: 32rem; text-align: center; }
.muted { margin: 0; color: #666; }

/* Home page */
.home-hero {
  text-align: center;
  padding: 3rem 0 2.5rem;
  margin-bottom: 2rem;
}

.home-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.home-role {
  font-size: 1.125rem;
  color: #555;
  margin: 0 0 0.75rem;
}

@media (prefers-color-scheme: dark) {
  .home-role { color: #aaa; }
}

.home-tagline {
  font-size: 1rem;
  max-width: 36rem;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

.home-beyond {
  font-size: 0.9375rem;
  color: #666;
  margin: 0 auto 0.35rem;
  letter-spacing: 0.02em;
}

.home-beyond-note {
  font-size: 0.875rem;
  color: #888;
  max-width: 32rem;
  margin: 0 auto 1.5rem;
  line-height: 1.5;
}

.home-beyond-note a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.home-beyond-note a:hover {
  color: inherit;
}

@media (prefers-color-scheme: dark) {
  .home-beyond { color: #999; }
  .home-beyond-note { color: #888; }
}

.home-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
}

.home-nav a {
  font-weight: 500;
}

.home-featured {
  padding-top: 2rem;
  border-top: 1px solid #e0e0e0;
}

@media (prefers-color-scheme: dark) {
  .home-featured { border-top-color: #333; }
}

.home-section-heading {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
}

.home-project-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  width: 100%;
}

.home-project-grid .home-project-card {
  flex: 1 1 100%;
  min-width: 0;
}

@media (min-width: 640px) {
  .home-project-grid {
    flex-wrap: nowrap;
  }
  .home-project-grid .home-project-card {
    flex: 1 1 0;
  }
}

.home-project-card {
  display: block;
  padding: 1rem;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.home-project-card:hover {
  border-color: #999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  .home-project-card {
    border-color: #333;
  }
  .home-project-card:hover {
    border-color: #555;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  }
}

.home-project-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 6px;
  margin-bottom: 0.75rem;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-project-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: #888;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.home-project-tag {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
  margin-bottom: 0.25rem;
}

@media (prefers-color-scheme: dark) {
  .home-project-image { background: #1a1a1a; }
}

.home-project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.home-project-placeholder {
  width: 100%;
  height: 100%;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  color: #888;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (prefers-color-scheme: dark) {
  .home-project-placeholder { color: #666; }
}

.home-project-tag {
  display: block;
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
  margin-bottom: 0.25rem;
}

@media (prefers-color-scheme: dark) {
  .home-project-tag { color: #888; }
}

.home-project-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.home-project-meta {
  font-size: 0.8125rem;
  color: #555;
  margin: 0 0 0.25rem;
}

@media (prefers-color-scheme: dark) {
  .home-project-meta { color: #888; }
}

.home-project-excerpt {
  font-size: 0.875rem;
  margin: 0;
  line-height: 1.5;
}

.home-featured-footer {
  margin: 0;
  font-size: 0.9375rem;
}

.home-featured-footer a {
  font-weight: 500;
}

@media (max-width: 600px) {
  .home-hero { padding: 2rem 0 1.5rem; }
}
@media (prefers-color-scheme: dark) {
  .muted { color: #888 !important; }
}

/* Dark mode: respects system preference */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }

  body {
    background-color: #0a0a0a !important;
    color: #e5e5e5 !important;
  }

  .site-header {
    border-top-color: #333 !important;
    border-bottom-color: #222 !important;
  }

  .site-title,
  .site-title:visited {
    color: #e5e5e5 !important;
  }

  .site-nav .page-link {
    color: #e5e5e5 !important;
  }

  a {
    color: #e5e5e5 !important;
  }

  a:visited {
    color: #b0b0b0 !important;
  }

  a:hover {
    color: #ffffff !important;
  }

  .post-meta,
  .footer-col-wrapper {
    color: #888 !important;
  }

  blockquote {
    color: #999 !important;
    border-left-color: #333 !important;
  }

  pre, code {
    background-color: #1a1a1a !important;
    border-color: #333 !important;
    color: #e5e5e5 !important;
  }

  .wrapper {
    color: inherit;
  }

  table,
  th, td {
    border-color: #333 !important;
  }

  th {
    background-color: #1a1a1a !important;
  }

  tr:nth-child(even) {
    background-color: #141414 !important;
  }

  .svg-icon {
    fill: #888 !important;
  }

  /* Mobile nav */
  .site-nav {
    background-color: #0a0a0a !important;
    border-color: #333 !important;
  }
}

/* Light mode: ensure color-scheme for consistency */
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
  }
}

/* 404 page */
.container h1 {
  margin: 0 0 1rem;
  font-size: 4rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.container p {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.container p:last-of-type {
  margin-top: 2rem;
}

/* Portfolio filter pills */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.5rem;
}

.portfolio-pill {
  padding: 0.35rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid #ccc;
  border-radius: 2rem;
  background: transparent;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.portfolio-pill:hover {
  border-color: #888;
  background: #f5f5f5;
}

.portfolio-pill-active {
  border-color: #111;
  background: #111;
  color: #fff;
}

.portfolio-pill-active:hover {
  border-color: #333;
  background: #333;
}

@media (prefers-color-scheme: dark) {
  .portfolio-pill {
    border-color: #444;
  }

  .portfolio-pill:hover {
    border-color: #666;
    background: #1a1a1a;
  }

  .portfolio-pill-active {
    border-color: #e5e5e5;
    background: #e5e5e5;
    color: #111;
  }

  .portfolio-pill-active:hover {
    border-color: #fff;
    background: #fff;
  }
}

.portfolio-card-hidden {
  display: none !important;
}

.portfolio-intro {
  margin: 0 0 1rem;
}

/* Portfolio card grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.portfolio-card {
  display: block;
  padding: 1.5rem;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.portfolio-card:hover {
  border-color: #999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.portfolio-card-image {
  margin-bottom: 1rem;
  border-radius: 6px;
  overflow: hidden;
  background: #f5f5f5;
  min-height: 140px;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-card-image img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.portfolio-card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: #888;
}

.portfolio-card-placeholder-icon {
  font-size: 2.5rem;
  opacity: 0.7;
}

.portfolio-card-placeholder-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (prefers-color-scheme: dark) {
  .portfolio-card-placeholder { color: #666; }
}

.portfolio-card-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
  margin-bottom: 0.35rem;
}

@media (prefers-color-scheme: dark) {
  .portfolio-card-tag { color: #888; }
}

.portfolio-card-content {
  margin: 0;
}

.portfolio-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.portfolio-card-meta {
  font-size: 0.875rem;
  color: #555;
  margin: 0 0 0.5rem;
}

.portfolio-card-excerpt {
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0;
  color: inherit;
}

@media (prefers-color-scheme: dark) {
  .portfolio-card {
    border-color: #333;
  }

  .portfolio-card:hover {
    border-color: #666;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  }

  .portfolio-card-image {
    background: #1a1a1a;
  }

  .portfolio-card-meta {
    color: #888;
  }
}

@media (max-width: 600px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

/* Portfolio detail page */
.portfolio-project {
  margin-bottom: 3rem;
}

.portfolio-project:last-of-type {
  margin-bottom: 0;
}

.portfolio-project h2 {
  margin-bottom: 0.25rem;
}

.portfolio-meta {
  font-size: 0.9375rem;
  color: #555;
  margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
  .portfolio-meta {
    color: #aaa;
  }
}

.portfolio-screenshot {
  display: block;
  max-width: 280px;
  border-radius: 12px;
  border: 1px solid #e0e0e0;
  margin: 1rem 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  .portfolio-screenshot {
    border-color: #333;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  }
}

.portfolio-project table {
  font-size: 0.9375rem;
  width: 100%;
  max-width: 400px;
  border-collapse: collapse;
  margin: 0.5rem 0 1rem;
}

.portfolio-project th,
.portfolio-project td {
  padding: 0.4rem 0.75rem 0.4rem 0;
  text-align: left;
  border-bottom: 1px solid #e0e0e0;
  vertical-align: top;
}

.portfolio-project th {
  font-weight: 600;
  color: inherit;
}

.portfolio-project tr:last-child td {
  border-bottom: none;
}

@media (prefers-color-scheme: dark) {
  .portfolio-project th,
  .portfolio-project td {
    border-bottom-color: #333;
  }
}

.portfolio-links {
  margin-top: 1rem;
}

.portfolio-links a {
  margin-right: 1rem;
}

/* Work experience timeline */
.about-intro {
  margin-bottom: 2.5rem;
}

.about-intro p {
  margin-bottom: 0.75rem;
}

.timeline {
  position: relative;
  padding-left: 2.5rem;
  margin-top: 2rem;
}

/* Vertical spine — refined, behind markers */
.timeline::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 1px;
  margin-left: 0;
  background: linear-gradient(to bottom, transparent 0%, #bbb 10%, #bbb 90%, transparent 100%);
  z-index: 0;
}

@media (prefers-color-scheme: dark) {
  .timeline::before {
    background: linear-gradient(to bottom, transparent 0%, #444 10%, #444 90%, transparent 100%);
  }
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
  z-index: 1; /* markers sit on top of vertical spine */
}

.timeline-item:last-child {
  padding-bottom: 0;
}

/* Markers on top of vertical line — padding ring hides content behind; previous roles = filled */
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.99rem;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: #111;
  box-shadow: 0 0 0 6px #ffffff; /* padding ring + hides content behind circle */
  z-index: 2;
}

/* Current role (first) = unfilled circle */
.timeline-item:first-child::before {
  background: #ffffff;
  border: 2px solid #111;
  box-shadow: 0 0 0 6px #ffffff;
}

@media (prefers-color-scheme: dark) {
  .timeline-item::before {
    background: #e5e5e5;
    box-shadow: 0 0 0 6px #0a0a0a;
  }

  .timeline-item:first-child::before {
    background: #0a0a0a;
    border-color: #e5e5e5;
    box-shadow: 0 0 0 6px #0a0a0a;
  }
}

.timeline-content {
  margin-left: -0.75rem; /* content extends behind circle; circle hides overlapping part */
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.15rem;
}

.timeline-header strong {
  font-weight: 600;
  font-size: 1.0625rem;
}

.timeline-date {
  font-size: 0.875rem;
  color: #666;
  font-weight: 400;
}

.timeline-company {
  font-weight: 400;
  color: #555;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

@media (prefers-color-scheme: dark) {
  .timeline-date { color: #888; }
  .timeline-company { color: #aaa; }
}

.timeline-details {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.timeline-details li {
  margin-bottom: 0.35rem;
}

.timeline-details li:last-child {
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .timeline {
    padding-left: 1.5rem;
    margin-top: 1.5rem;
  }

  .timeline::before {
    left: 0.375rem;
  }

  .timeline-content {
    margin-left: -0.5rem;
  }

  .timeline-item::before {
    left: -1.1rem;
    top: 0.35rem;
    width: 10px;
    height: 10px;
    box-shadow: 0 0 0 4px #ffffff;
  }

  .timeline-item:first-child::before {
    border-width: 2px;
    box-shadow: 0 0 0 4px #ffffff;
  }

  .timeline-header strong {
    font-size: 1rem;
  }

  .timeline-details {
    padding-left: 1rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 600px) and (prefers-color-scheme: dark) {
  .timeline-item::before {
    box-shadow: 0 0 0 4px #0a0a0a;
  }

  .timeline-item:first-child::before {
    box-shadow: 0 0 0 4px #0a0a0a;
  }
}

/* Footer - equal columns, mobile responsive */
.footer-col-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-left: 0;
}

.footer-col {
  flex: 1;
  min-width: 140px;
  float: none;
  margin-bottom: 0;
  padding-left: 0;
}

.footer-col-2,
.footer-col-3 {
  width: auto;
}

/* Social links – horizontal layout */
.site-footer .social-media-list {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  gap: 1rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer .social-media-list li {
  margin: 0;
}

.footer-col-3 {
  flex: 1 1 240px;
  min-width: 0;
}

.footer-col-3 p {
  margin: 0;
  max-width: 100%;
  font-size: clamp(0.8125rem, 1.5vw + 0.5rem, 0.9375rem);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .footer-heading {
    text-align: center;
  }

  .footer-col-wrapper {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .footer-col {
    min-width: 100%;
    text-align: center;
  }

  .site-footer .social-media-list {
    justify-content: center;
    gap: 1rem;
  }

  .site-footer .social-media-list li {
    margin: 0;
  }
}