/* Sci-fi terminal aesthetic — dark, cyan/violet accents, readable prose */

:root {
  --bg-deep: #070a0f;
  --bg-panel: #0c1219;
  --bg-elevated: #111a24;
  --border: rgba(0, 229, 255, 0.14);
  --text: #e6edf3;
  --text-muted: #8b9cb3;
  --accent: #00e5ff;
  --accent-dim: rgba(0, 229, 255, 0.65);
  --violet: #a78bfa;
  --danger: #f472b6;
  --radius: 10px;
  --font-display: "Orbitron", system-ui, sans-serif;
  --font-body: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  --font-sans: "Source Sans 3", system-ui, sans-serif;
  --glow: 0 0 24px rgba(0, 229, 255, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg-deep);
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    radial-gradient(ellipse 120% 80% at 50% -30%, rgba(88, 28, 135, 0.22), transparent 55%),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(0, 229, 255, 0.06), transparent 45%);
  background-size: 48px 48px, 48px 48px, 100% 100%, 100% 100%;
  background-attachment: fixed;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

a:hover {
  color: #8ff;
  border-bottom-color: var(--accent-dim);
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

.site-header {
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  border-bottom: none;
  text-shadow: var(--glow);
}

.brand:hover {
  color: var(--accent);
  border-bottom: none;
}

.brand-tag {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-dim);
  margin-top: 0.35rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 1.25rem;
}

.nav a {
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid transparent;
  padding: 0.25rem 0;
}

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

main {
  position: relative;
}

.site-footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

/* Home intro */
.home-intro {
  margin-bottom: 2.5rem;
}

.home-intro .lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 1.25rem 0;
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.link-row a {
  color: var(--violet);
}

.section-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

/* Project cards */
.project-deck {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: rgba(0, 229, 255, 0.35);
  box-shadow: var(--glow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.card h3 a {
  color: var(--text);
  border-bottom: none;
}

.card h3 a:hover {
  color: var(--accent);
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.card-badges {
  margin-top: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.card-badges img {
  height: 22px;
  width: auto;
  vertical-align: middle;
}

.writing-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-top: 1rem;
}

.writing-box ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.writing-box li {
  margin: 0.35rem 0;
}

/* Blog index */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--border);
}

.post-list a.block {
  display: block;
  padding: 1.15rem 0.25rem;
  border-bottom: none;
  border-radius: var(--radius);
}

.post-list a.block:hover {
  background: rgba(0, 229, 255, 0.04);
}

.post-list .meta {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dim);
}

.post-list h2 {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text);
}

.post-list .excerpt {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.tag-row {
  margin-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--violet);
}

/* Single post */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.post-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.post-meta {
  margin-top: 0.75rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Prose (post body) */
.prose {
  max-width: 68ch;
}

.prose h2,
.prose h3,
.prose h4 {
  font-family: var(--font-display);
  margin-top: 1.75rem;
  margin-bottom: 0.65rem;
  letter-spacing: 0.03em;
  color: var(--text);
}

.prose h2 {
  font-size: 1.25rem;
}

.prose p {
  margin: 0.85rem 0;
}

.prose ul,
.prose ol {
  padding-left: 1.35rem;
}

.prose li {
  margin: 0.35rem 0;
}

.prose blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--violet);
  background: rgba(167, 139, 250, 0.06);
  color: var(--text-muted);
}

.prose code {
  font-family: var(--font-body);
  font-size: 0.88em;
  padding: 0.12rem 0.35rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.prose pre {
  margin: 1.25rem 0;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.prose pre code {
  padding: 0;
  border: none;
  background: none;
  font-size: 0.82rem;
  line-height: 1.5;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.prose th,
.prose td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.65rem;
}

.prose th {
  background: var(--bg-elevated);
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-dim);
}

.page-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.06em;
  margin: 0 0 1.5rem;
}

/* Kramdown footnotes + reference lists (long-form posts) */
.prose sup {
  font-size: 0.72em;
  vertical-align: super;
}

.prose sup a {
  border-bottom: none;
  padding: 0 0.1em;
}

.prose sup a:hover {
  color: var(--violet);
}

.prose .footnotes {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.prose .footnotes ol {
  padding-left: 1.25rem;
}

.prose .footnotes li {
  margin: 0.65rem 0;
  line-height: 1.55;
}

.prose .footnotes p {
  margin: 0.35rem 0;
}

.prose .footnotes a {
  word-break: break-all;
}

.prose .reversefootnote {
  border-bottom: none;
  font-size: 0.85em;
}

.prose h2#references,
.prose h2.references {
  margin-top: 2.25rem;
}

.prose .reference-list {
  font-size: 0.9rem;
}

.prose .reference-list li {
  margin: 0.5rem 0;
}

.prose .reference-list a {
  word-break: break-all;
}

.prose h2#references + ol,
.prose h2#references + ul {
  font-size: 0.9rem;
  line-height: 1.55;
}

.prose h2#references + ol a,
.prose h2#references + ul a {
  word-break: break-all;
}