/* ============================================================
   Portfolio — shared stylesheet
   Extracted from the demo, plus pagination + markdown prose.
   Colors and fonts live in the :root variables below.
   ============================================================ */

:root{
  --bg:        #0b0c0e;
  --bg-raised: #131417;
  --line:      #23252a;
  --ink:       #e9e7e0;
  --ink-dim:   #9a9ca3;
  --ink-faint: #5f6169;
  --accent:    #e0a458;
  --accent-dim:#8a6a3d;
  --wave-line: #7fd4bc;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --maxw: 760px;
}

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}

a{ color:inherit; }

::selection{ background:var(--accent); color:#0b0c0e; }

/* ---------- background texture ---------- */
.grain{
  position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity:0.85;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent 70%);
}

/* ---------- page-wide signal-trace background ---------- */
.page-waves{ position:fixed; inset:0; z-index:0; overflow:hidden; pointer-events:none; }
.wave-track{
  position:absolute; inset:0; width:200%; display:flex;
  animation: wave-scroll 60s linear infinite;
}
.wave-rows-set{
  width:50%; height:100%; flex-shrink:0;
  display:flex; flex-direction:column;
}
.wave-rows-set svg{ width:100%; height:10%; display:block; }
.wave-rows-set polyline{
  fill:none;
  stroke:var(--wave-line);
  stroke-width:2.4;
  vector-effect:non-scaling-stroke;
}
@keyframes wave-scroll{
  from{ transform:translateX(0); }
  to{ transform:translateX(-50%); }
}
@media (prefers-reduced-motion: reduce){
  .wave-track{ animation:none; }
}

/* ---------- hero signal-trace banner ---------- */
.hero-band{
  position:relative;
  overflow:hidden;
  border-top:1px solid rgba(95,174,155,0.35);
  border-bottom:1px solid rgba(95,174,155,0.35);
  text-align:center;
  padding:0 24px !important;
  max-width:none !important;
}
.hero-band::after{
  content:"";
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background: radial-gradient(ellipse 60% 75% at 50% 48%, rgba(11,12,14,0.94) 0%, rgba(11,12,14,0.6) 45%, rgba(11,12,14,0.05) 75%);
}

.hero-content{ position:relative; z-index:2; max-width:var(--maxw); margin:0 auto; padding:120px 0 100px; }
.hero-content .prompt{ text-align:center; }
.hero-content .hero-desc{ margin-left:auto; margin-right:auto; }
.hero-cta{ max-width:52ch; margin:28px auto 0; color:var(--ink); }

.contact-rows{
  margin-top:26px;
  font-family:var(--mono);
  font-size:14px;
  display:grid;
  gap:8px;
}
.contact-rows .label{ color:var(--ink-dim); }
.contact-rows .value{
  color:var(--accent);
  font-weight:600;
  text-decoration:underline;
  text-decoration-color:var(--accent-dim);
  text-underline-offset:3px;
}

/* ---------- nav ---------- */
header{
  position:sticky; top:0; z-index:10;
  background:rgba(11,12,14,0.85);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
nav{
  max-width:var(--maxw);
  margin:0 auto;
  padding:18px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-family:var(--mono);
  font-size:13px;
}
.brand{
  color:var(--ink);
  text-decoration:none;
  font-weight:600;
  letter-spacing:0.02em;
}
.brand .dot{ color:var(--accent); }
.navlinks{ display:flex; gap:22px; list-style:none; margin:0; padding:0; }
.navlinks a{
  text-decoration:none;
  color:var(--ink-dim);
  position:relative;
  transition:color 0.15s ease;
}
.navlinks a:hover, .navlinks a:focus-visible{ color:var(--accent); }
.navlinks a.active{ color:var(--accent); }
.navlinks a::before{ content:"· "; color:var(--ink-faint); }

main{ position:relative; z-index:1; }

section{
  max-width:var(--maxw);
  margin:0 auto;
  padding:88px 24px;
  border-bottom:1px solid var(--line);
}
section:last-of-type{ border-bottom:none; }

.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--accent);
  margin:0 0 14px 0;
}
.eyebrow::before{ content:"// "; color:var(--accent-dim); }

h1,h2,h3{
  font-family:var(--mono);
  font-weight:600;
  line-height:1.25;
  margin:0 0 16px 0;
  color:var(--ink);
}
h1{ font-size:clamp(28px, 5vw, 38px); }
h2{ font-size:22px; }
p{ color:var(--ink-dim); margin:0 0 14px 0; }

.page-intro{ max-width:56ch; margin-bottom:40px; }

/* ---------- hero ---------- */
#home{ padding-top:120px; padding-bottom:100px; }
.prompt{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-faint);
  margin-bottom:22px;
}
.prompt .cursor{
  display:inline-block;
  width:8px; height:14px;
  background:var(--accent);
  margin-left:4px;
  vertical-align:middle;
  animation:blink 1.1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity:0; } }

.hero-name{
  font-size:clamp(34px, 6vw, 52px);
  letter-spacing:-0.01em;
}
.hero-role{
  font-family:var(--sans);
  font-size:18px;
  color:var(--ink-dim);
  margin-bottom:24px;
}
.hero-role strong{ color:var(--ink); font-weight:600; }

.hero-desc{ max-width:56ch; }

.hero-links{
  display:flex; gap:16px; flex-wrap:wrap;
  margin-top:28px;
  font-family:var(--mono);
  font-size:13px;
}
.hero-links a{
  text-decoration:none;
  border:1px solid var(--line);
  padding:9px 16px;
  border-radius:3px;
  color:var(--ink);
  transition:border-color 0.15s ease, color 0.15s ease;
}
.hero-links a:hover, .hero-links a:focus-visible{
  border-color:var(--accent);
  color:var(--accent);
}
.hero-links a.primary{
  background:var(--accent);
  color:#0b0c0e;
  border-color:var(--accent);
  font-weight:600;
}
.hero-links a.primary:hover{ opacity:0.88; color:#0b0c0e; }

.section-head{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:12px; flex-wrap:wrap;
}
.section-more{
  font-family:var(--mono); font-size:12px;
  color:var(--accent); text-decoration:none;
}
.section-more:hover{ text-decoration:underline; }

/* ---------- project cards ---------- */
.card{
  background:var(--bg-raised);
  border:1px solid var(--line);
  border-radius:6px;
  padding:26px 28px;
  margin-bottom:20px;
  transition:border-color 0.15s ease, transform 0.15s ease;
}
.card:hover{ border-color:var(--accent-dim); }
.card-head{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:12px; flex-wrap:wrap;
  margin-bottom:6px;
}
.card-title{
  font-family:var(--mono);
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  text-decoration:none;
}
.card-title:hover{ color:var(--accent); }
.card-tag{
  font-family:var(--mono);
  font-size:11px;
  color:var(--ink-faint);
  border:1px solid var(--line);
  padding:2px 8px;
  border-radius:20px;
  white-space:nowrap;
}
.card-sub{
  font-size:14px;
  color:var(--ink);
  opacity:0.75;
  margin-bottom:10px;
}
.stack{
  display:flex; flex-wrap:wrap; gap:6px;
  margin-top:14px;
  font-family:var(--mono);
  font-size:11px;
}
.stack span, .stack button{
  color:var(--accent);
  background:rgba(224,164,88,0.08);
  border:none;
  padding:3px 9px;
  border-radius:20px;
  font-family:var(--mono);
  font-size:11px;
  cursor:pointer;
}
.stack button:hover{ background:rgba(224,164,88,0.18); }
.card-links{
  margin-top:14px;
  display:flex; gap:16px;
  font-family:var(--mono);
  font-size:12px;
}
.card-links a{ color:var(--ink-dim); text-decoration:none; }
.card-links a:hover{ color:var(--accent); }

/* ---------- blog posts ---------- */
.post{
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.post:last-child{ border-bottom:none; }
#post-list .post:first-child, .post-list .post:first-child{ padding-top:0; }

.post-date{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-faint);
  margin-bottom:6px;
}
.post-meta{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  font-family:var(--mono); font-size:12px; color:var(--ink-faint);
  margin-bottom:8px;
}
.post-meta .featured{ color:var(--accent); }
.post-meta .sep{ color:var(--line); }

.post-title{
  font-family:var(--mono); font-size:17px; font-weight:600;
  text-decoration:none; color:var(--ink);
  display:inline-block; margin-bottom:8px;
}
.post-title:hover{ color:var(--accent); }
.post-excerpt{ margin-bottom:10px; }

.post-tags{ display:flex; gap:6px; flex-wrap:wrap; margin-bottom:8px; }
.post-tags button{
  font-family:var(--mono); font-size:11px;
  color:var(--ink-dim);
  background:var(--bg-raised);
  border:1px solid var(--line);
  padding:3px 10px;
  border-radius:20px;
  cursor:pointer;
  transition:border-color 0.15s ease, color 0.15s ease;
}
.post-tags button:hover{ border-color:var(--accent); color:var(--accent); }

.post-more{
  font-family:var(--mono); font-size:12px;
  text-decoration:none; color:var(--accent);
}
.post-more:hover{ text-decoration:underline; }

/* ---------- controls (search / sort / tag filter) ---------- */
.controls{
  display:flex; flex-direction:column; gap:18px;
  margin-bottom:36px;
  padding-bottom:28px;
  border-bottom:1px solid var(--line);
}
.search-row{ display:flex; gap:12px; flex-wrap:wrap; align-items:center; }
.search-input{
  flex:1; min-width:200px;
  background:var(--bg-raised);
  border:1px solid var(--line);
  border-radius:6px;
  padding:10px 14px;
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink);
  outline:none;
  transition:border-color 0.15s ease;
}
.search-input::placeholder{ color:var(--ink-faint); }
.search-input:focus{ border-color:var(--accent); }

.sort-select{
  background:var(--bg-raised);
  border:1px solid var(--line);
  border-radius:6px;
  padding:10px 14px;
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink);
  outline:none;
  cursor:pointer;
  transition:border-color 0.15s ease;
}
.sort-select:focus{ border-color:var(--accent); }

.tag-row{ display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
.tag-btn{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-dim);
  background:transparent;
  border:1px solid var(--line);
  padding:6px 13px;
  border-radius:20px;
  cursor:pointer;
  transition:border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.tag-btn:hover{ border-color:var(--accent-dim); color:var(--ink); }
.tag-btn.active{
  color:var(--accent);
  border-color:var(--accent);
  background:rgba(224,164,88,0.08);
}
.tag-btn .count{ color:var(--ink-faint); }
.tag-btn.active .count{ color:var(--accent-dim); }

.clear-btn{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-faint);
  background:none;
  border:none;
  cursor:pointer;
  text-decoration:underline;
  padding:6px 4px;
}
.clear-btn:hover{ color:var(--accent); }
.clear-btn[hidden]{ display:none; }

.result-count{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-faint);
}

/* ---------- empty state ---------- */
.empty-state{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-faint);
  padding:50px 0;
  text-align:center;
  border:1px dashed var(--line);
  border-radius:6px;
}
.empty-state[hidden]{ display:none; }
.empty-state button{
  display:block; margin:14px auto 0;
  font-family:var(--mono); font-size:12px;
  color:var(--accent); background:none; border:none;
  cursor:pointer; text-decoration:underline;
}

/* ---------- pagination ---------- */
.pagination{
  display:flex; justify-content:center; align-items:center;
  gap:8px; flex-wrap:wrap;
  margin-top:40px;
  font-family:var(--mono); font-size:13px;
}
.pagination[hidden]{ display:none; }
.page-btn{
  min-width:36px;
  font-family:var(--mono); font-size:13px;
  color:var(--ink-dim);
  background:var(--bg-raised);
  border:1px solid var(--line);
  padding:8px 12px;
  border-radius:6px;
  cursor:pointer;
  transition:border-color 0.15s ease, color 0.15s ease;
}
.page-btn:hover:not(:disabled){ border-color:var(--accent-dim); color:var(--ink); }
.page-btn.active{
  color:var(--accent);
  border-color:var(--accent);
  background:rgba(224,164,88,0.08);
}
.page-btn:disabled{ opacity:0.4; cursor:not-allowed; }
.page-ellipsis{ color:var(--ink-faint); padding:0 4px; }

/* ---------- about ---------- */
.about-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
}
.tags{
  display:flex; flex-wrap:wrap; gap:8px;
  margin-top:10px;
}
.tags span{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink);
  border:1px solid var(--line);
  padding:5px 11px;
  border-radius:20px;
}
.facts{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-dim);
  list-style:none;
  padding:0; margin:18px 0 0 0;
  display:grid;
  gap:8px;
}
.facts li::before{ content:"— "; color:var(--ink-faint); }

/* ---------- markdown prose (detail pages) ---------- */
.prose{ color:var(--ink-dim); }
.prose h1, .prose h2, .prose h3{ margin-top:32px; }
.prose h2{ font-size:20px; }
.prose h3{ font-size:16px; }
.prose p{ margin:0 0 16px 0; }
.prose a{ color:var(--accent); text-underline-offset:3px; }
.prose strong{ color:var(--ink); }
.prose ul, .prose ol{ color:var(--ink-dim); padding-left:22px; margin:0 0 16px 0; }
.prose li{ margin-bottom:6px; }
.prose blockquote{
  border-left:2px solid var(--accent-dim);
  margin:0 0 16px 0; padding:4px 0 4px 18px;
  color:var(--ink-faint);
}
.prose code{
  font-family:var(--mono); font-size:13px;
  background:var(--bg-raised);
  border:1px solid var(--line);
  border-radius:4px;
  padding:1px 6px;
}
.prose pre{
  background:var(--bg-raised);
  border:1px solid var(--line);
  border-radius:6px;
  padding:16px 18px;
  overflow-x:auto;
  margin:0 0 16px 0;
}
.prose pre code{ background:none; border:none; padding:0; }
.prose pre code.hljs{ background:none; padding:0; }
.prose .mermaid{ text-align:center; margin:0 0 16px; }
.prose .katex-display{ overflow-x:auto; overflow-y:hidden; padding:4px 0; }
.prose img{ max-width:100%; border-radius:6px; }
.prose hr{ border:none; border-top:1px solid var(--line); margin:32px 0; }

.detail-meta{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  font-family:var(--mono); font-size:12px; color:var(--ink-faint);
  margin-bottom:20px;
}
.detail-meta .sep{ color:var(--line); }
.back-link{
  font-family:var(--mono); font-size:12px;
  color:var(--ink-dim); text-decoration:none;
  display:inline-block; margin-bottom:28px;
}
.back-link:hover{ color:var(--accent); }

/* ---------- footer ---------- */
footer{
  position:relative; z-index:1;
  max-width:var(--maxw);
  margin:0 auto;
  padding:40px 24px 60px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-faint);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  border-top:1px solid var(--line);
}
footer a{ color:var(--ink-dim); text-decoration:none; }
footer a:hover{ color:var(--accent); }
.back-top{ position:relative; z-index:1; }

@media (max-width:600px){
  nav{ padding:16px 20px; }
  .navlinks{ gap:14px; font-size:12px; }
  section{ padding:64px 20px; }
  #home{ padding-top:80px; }
  .search-row{ flex-direction:column; align-items:stretch; }
}