:root {
  /* Color tokens — One Half Dark */
  --c-bg:          #1a1d23;
  --c-surface:     #282c34;
  --c-border:      #3e4451;
  --c-dim:         #5c6370;
  --c-primary:     #61afef;
  --c-bright:      #85c1f5;
  --c-text:        #dcdfe4;
  --c-muted:       #abb2bf;
  --c-glow:        rgba(97, 175, 239, 0.14);
  --c-glow-hi:     rgba(97, 175, 239, 0.32);

  /* Code */
  --c-code-bg:     #21252b;
  --c-code-border: #3e4451;

  /* CRT */
  --c-bezel:       #0f1114;

  /* Typography */
  --font-pixel:    'Press Start 2P', monospace;
  --font-mono:     'Space Mono', 'Courier New', monospace;
}

/* ─────────────── RESET ─────────────── */

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

html {
  background: var(--c-bg);
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) var(--c-bg);
}

body {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

::-webkit-scrollbar          { width: 5px; height: 5px; }
::-webkit-scrollbar-track    { background: var(--c-bg); }
::-webkit-scrollbar-thumb    { background: var(--c-border); }
::-webkit-scrollbar-thumb:hover { background: var(--c-dim); }

a {
  color: var(--c-primary);
  text-decoration: none;
}

a:hover {
  color: var(--c-bright);
  text-shadow: 0 0 8px var(--c-glow-hi);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 1px solid var(--c-primary);
  outline-offset: 2px;
}

/* ─────────────── CRT OVERLAY (scanlines + vignette) ─────────────── */

.crt-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10001;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.04) 2px,
    rgba(0, 0, 0, 0.04) 4px
  );
}

.crt-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 50% 44%,
    transparent 45%,
    rgba(0, 0, 0, 0.22) 72%,
    rgba(0, 0, 0, 0.45) 100%
  );
}


/* ─────────────── BOOT SEQUENCE ─────────────── */

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes boot-fade-out {
  from { opacity: 1; }
  to   { opacity: 0; }
}

.boot-screen {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  z-index: 10000;
  align-items: center;
  justify-content: center;
}

.boot-content {
  width: min(340px, 80vw);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.boot-label {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--c-primary);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0;
}

.boot-prompt {
  color: var(--c-bright);
  margin-right: 6px;
}

.boot-typed {
  color: var(--c-text);
}

.boot-cursor {
  color: var(--c-primary);
  animation: blink 1s step-end infinite;
}

.boot-cursor.no-blink {
  animation: none;
  opacity: 1;
}

.boot-bar-terminal {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: -1.5px;
  text-align: left;
  visibility: hidden;
}

.boot-bar-terminal::before { content: '[ '; color: var(--c-dim); letter-spacing: 0; }
.boot-bar-terminal::after  { content: ' ]'; color: var(--c-dim); letter-spacing: 0; }

#boot-bar-fill  { color: var(--c-primary); }
.boot-bar-empty { color: var(--c-border); }

.boot-fade {
  animation: boot-fade-out 0.5s ease forwards;
}

/* ─────────────── LAYOUT ─────────────── */

.page-bg    { display: none; }
.site-header { display: none; }

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 0 0 80px;
}

/* Shared surface */
.glass {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}

/* ─────────────── HERO ─────────────── */

.hero {
  padding: 56px 16px 20px;
  text-align: center;
}

.hero-inner {
  width: min(820px, 92vw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-kicker {
  font-family: var(--font-pixel);
  font-size: clamp(14px, 3.5vw, 26px);
  letter-spacing: 0.08em;
  color: var(--c-bright);
  text-shadow: 0 0 24px var(--c-glow-hi), 0 0 48px rgba(0, 223, 162, 0.1);
  margin-bottom: 14px;
}

.hero-handle { display: inline-block; }

/* suppress old gradient-text behavior */
.gradient-text {
  color: inherit;
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(11px, 1.6vw, 13px);
  font-weight: 400;
  color: var(--c-muted);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}

.hero-title::before {
  content: '> ';
  color: var(--c-dim);
}

.hero-title::after {
  content: '_';
  color: var(--c-primary);
  animation: blink 1s step-end infinite;
}

.hero-links {
  display: flex;
  justify-content: center;
  margin: 18px 0 28px;
  width: 100%;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 10px 16px;
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-primary);
  border: 1px solid var(--c-border);
  background: transparent;
  transition: border-color 0.2s, box-shadow 0.2s, color 0.2s;
}

.hero-link::before { content: '[ '; color: var(--c-dim); transition: color 0.2s; }
.hero-link::after  { content: ' ]'; color: var(--c-dim); transition: color 0.2s; }

.hero-link:hover {
  color: var(--c-bright);
  border-color: var(--c-primary);
  box-shadow: 0 0 14px var(--c-glow), inset 0 0 8px var(--c-glow);
  text-shadow: 0 0 8px var(--c-glow-hi);
}

.hero-link:hover::before,
.hero-link:hover::after {
  color: var(--c-primary);
}

/* ─────────────── STATS ─────────────── */

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 28px;
  width: 100%;
}

.stat.glass {
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(110px, 20vw, 152px);
  height: 68px;
  padding: 10px 14px;
  text-align: center;
  border-color: var(--c-border);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.stat.glass:hover {
  border-color: var(--c-primary);
  box-shadow: 0 0 12px var(--c-glow);
}

.stat.glass > div { width: 100%; }

.stat-value {
  font-family: var(--font-pixel);
  font-size: 20px;
  color: var(--c-primary);
  text-shadow: 0 0 10px var(--c-glow-hi);
  display: block;
  letter-spacing: 0.04em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-top: 5px;
}

/* ─────────────── SEARCH ─────────────── */

.search-wrap {
  position: relative;
  max-width: 540px;
  margin: 0 auto;
  width: 100%;
}

.search-wrap::before {
  content: '>';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--c-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  pointer-events: none;
  z-index: 1;
}

.search-input {
  width: 100%;
  padding: 11px 14px 11px 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  caret-color: var(--c-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input::placeholder { color: var(--c-dim); }

.search-input:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 10px var(--c-glow);
}

/* ─────────────── FILTERS ─────────────── */

.filters {
  padding: 28px 16px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.filters-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  margin-bottom: 14px;
}

.filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
  justify-content: center;
}

.filters-label {
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.chip {
  font-family: var(--font-pixel);
  font-size: 7px;
  letter-spacing: 0.05em;
  padding: 7px 10px;
  color: var(--c-muted);
  border: 1px solid var(--c-border);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, box-shadow 0.15s;
  text-transform: uppercase;
}

.chip::before { content: '[ '; }
.chip::after  { content: ' ]'; }

.chip:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.chip-active {
  color: var(--c-bg) !important;
  background: var(--c-primary) !important;
  border-color: var(--c-primary) !important;
  box-shadow: 0 0 10px var(--c-glow);
}

.chip-tag {
  font-size: 7px;
  padding: 5px 8px;
  color: var(--c-muted);
  border-color: var(--c-border);
}

.chip-tag.chip-active {
  color: var(--c-bg) !important;
  background: var(--c-primary) !important;
}

.results-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-dim);
  margin-bottom: 20px;
  text-align: center;
}

/* ─────────────── WRITEUP CARDS ─────────────── */

.writeup-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.writeup-grid.two-column {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.writeup-card {
  display: block;
  color: inherit;
  text-decoration: none;
}

.writeup-card article {
  padding: 14px 16px;
  height: 182px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

/* Top accent line on hover */
.writeup-card article::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: transparent;
  transition: background 0.2s, box-shadow 0.2s;
}

.writeup-card article:hover {
  border-color: var(--c-primary);
  box-shadow: 0 0 18px var(--c-glow), inset 0 0 16px rgba(0, 223, 162, 0.03);
}

.writeup-card article:hover::before {
  background: var(--c-primary);
  box-shadow: 0 0 8px var(--c-glow-hi);
}

.writeup-card article > * { margin: 0; }

.badge {
  font-family: var(--font-pixel);
  font-size: 7px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-primary);
  align-self: flex-start;
  padding: 2px 0;
}

.badge::before { content: '[ '; color: var(--c-dim); }
.badge::after  { content: ' ]'; color: var(--c-dim); }

.writeup-card h3 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.writeup-card p {
  flex: 1 1 0;
  min-height: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  max-height: 24px;
  overflow: hidden;
  min-height: 16px;
}

.tag-pill {
  font-family: var(--font-pixel);
  font-size: 7px;
  padding: 3px 6px;
  color: var(--c-dim);
  border: 1px solid var(--c-border);
  background: transparent;
  letter-spacing: 0.04em;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding-top: 8px;
  border-top: 1px solid var(--c-border);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-muted);
  margin-top: auto;
  flex-wrap: nowrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.meta-item svg,
.meta-arrow svg { display: none; }

.meta-arrow {
  margin-left: auto;
  color: var(--c-dim);
  transition: transform 0.2s, color 0.2s;
}

.writeup-card article:hover .meta-arrow {
  transform: translateX(4px);
  color: var(--c-primary);
}

/* ─────────────── POST PAGE ─────────────── */

.post {
  padding: 32px 36px;
  margin: 40px auto;
  max-width: 800px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-top: 2px solid var(--c-primary);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  margin-bottom: 24px;
  transition: color 0.2s, text-shadow 0.2s;
}

.back-link::before { content: '< '; color: var(--c-dim); }

.back-link:hover {
  color: var(--c-primary);
  text-shadow: 0 0 8px var(--c-glow);
}

.back-link svg { display: none; }

.eyebrow {
  font-family: var(--font-pixel);
  font-size: 7px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-dim);
}

.eyebrow::before { content: '// '; }

.post-header h1 {
  font-family: var(--font-pixel);
  font-size: clamp(13px, 2vw, 18px);
  color: var(--c-bright);
  text-shadow: 0 0 16px var(--c-glow);
  margin: 10px 0 14px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  overflow-wrap: break-word;
  word-break: break-word;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-muted);
}

.post-meta .tag-row {
  margin: 0;
  max-height: none;
  min-height: 0;
}

.meta-pill {
  font-family: var(--font-pixel);
  font-size: 7px;
  padding: 3px 7px;
  color: var(--c-primary);
  border: 1px solid var(--c-border);
  background: transparent;
  letter-spacing: 0.05em;
}

.meta-pill::before { content: '[ '; color: var(--c-dim); }
.meta-pill::after  { content: ' ]'; color: var(--c-dim); }

/* ─────────────── PROSE ─────────────── */

.post-content { margin-top: 28px; }

.prose {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.85;
  color: var(--c-text);
}

.prose h1,
.prose h2,
.prose h3 {
  font-family: var(--font-pixel);
  font-weight: 400;
  color: var(--c-bright);
  text-shadow: 0 0 10px var(--c-glow);
  margin-top: 1.8em;
  margin-bottom: 0.8em;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.prose h4,
.prose h5,
.prose h6 {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-primary);
  margin-top: 1.4em;
  margin-bottom: 0.5em;
  line-height: 1.4;
}

.prose h1 { font-size: 16px; }
.prose h2 { font-size: 13px; }
.prose h3 { font-size: 11px; }
.prose h4 { font-size: 13px; }

.prose h2::before { content: '## '; color: var(--c-dim); }
.prose h3::before { content: '### '; color: var(--c-dim); }

.prose p {
  margin-bottom: 1em;
  color: var(--c-text);
}

.prose a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--c-border);
}

.prose a:hover {
  color: var(--c-bright);
  text-decoration-color: var(--c-primary);
}

.prose ul,
.prose ol {
  padding-left: 1.6em;
  margin-bottom: 1em;
}

.prose li { margin-bottom: 0.3em; }

.prose ul li::marker { color: var(--c-primary); }
.prose ol li::marker { color: var(--c-primary); font-size: 10px; }

.prose blockquote {
  border-left: 2px solid var(--c-primary);
  padding-left: 1em;
  margin: 1.2em 0;
  color: var(--c-muted);
  font-style: normal;
}

.prose blockquote::before {
  display: block;
  content: '//';
  color: var(--c-dim);
  font-size: 10px;
  margin-bottom: 4px;
}

.prose img {
  max-width: 100%;
  border: 1px solid var(--c-border);
  margin: 1.5em 0;
  display: block;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--c-border);
  margin: 2em 0;
}

/* ─────────────── CODE BLOCKS ─────────────── */

code, pre {
  font-family: var(--font-mono) !important;
}

.prose pre,
pre[class*="language-"],
pre.shiki {
  background: var(--c-code-bg) !important;
  border: 1px solid var(--c-code-border) !important;
  border-radius: 0 !important;
  padding: 14px 16px !important;
  overflow-x: auto;
  margin: 1rem 0 1.4rem;
  font-size: 12px !important;
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) var(--c-code-bg);
}

pre[class*="language-"] > code,
pre.shiki code {
  background: transparent;
  padding: 0;
  margin: 0;
  display: block;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: inherit;
}

pre.language-text,
pre.language-text code {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.prose :not(pre) > code {
  font-family: var(--font-mono);
  background: var(--c-surface);
  color: var(--c-primary);
  padding: 0.15em 0.4em;
  border: 1px solid var(--c-border);
  font-size: 0.875em;
}

.prose pre code {
  background: transparent;
  padding: 0;
  margin: 0;
  display: block;
  border: none;
}

.prose pre::-webkit-scrollbar          { height: 4px; background: var(--c-code-bg); }
.prose pre::-webkit-scrollbar-thumb    { background: var(--c-border); }
pre[class*="language-"]::-webkit-scrollbar       { height: 4px; background: var(--c-code-bg); }
pre[class*="language-"]::-webkit-scrollbar-thumb { background: var(--c-border); }

/* ─────────────── TABLES ─────────────── */

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin: 1em 0;
}

.prose th {
  font-family: var(--font-pixel);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-primary);
  border: 1px solid var(--c-border);
  padding: 8px 12px;
  background: var(--c-surface);
  text-align: left;
}

.prose td {
  border: 1px solid var(--c-border);
  padding: 8px 12px;
  color: var(--c-text);
}

/* ─────────────── KATEX ─────────────── */

.katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 1em 0;
  color: var(--c-text);
}

.katex {
  font-size: 1.05em;
  color: var(--c-text);
}

/* ─────────────── RESPONSIVE ─────────────── */

@media (max-width: 900px) {
  .container {
    width: 96vw;
    padding: 0 0 60px;
  }

  .writeup-grid.two-column {
    grid-template-columns: 1fr;
  }

  .tag-row {
    max-height: none;
    min-height: 0;
  }

  .post {
    max-width: 100%;
    margin: 24px auto;
    padding: 24px 20px;
  }
}

@media (max-width: 640px) {
  .container {
    width: 100vw;
    padding: 0 0 48px;
  }

  .hero {
    padding: 32px 12px 12px;
  }

  .hero-inner {
    width: 100%;
    padding: 0 4px;
  }

  .hero-kicker {
    font-size: clamp(11px, 5.5vw, 18px);
    word-break: break-word;
  }

  .hero-title {
    font-size: 10px;
  }

  .hero-stats {
    gap: 8px;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .stat.glass {
    flex: 1 1 calc(33% - 8px);
    min-width: 80px;
    height: 58px;
    padding: 8px;
  }

  .stat-value { font-size: 16px; }
  .stat-label { font-size: 8px; }

  .search-wrap  { max-width: 100%; }
  .search-input { font-size: 11px; }

  .filters {
    padding: 16px 8px 24px;
  }

  .chip {
    font-size: 6px;
    padding: 6px 8px;
  }

  .chip-tag {
    font-size: 6px;
    padding: 4px 6px;
  }

  .filters-label { font-size: 7px; }

  .writeup-grid { gap: 10px; }

  .writeup-card article { padding: 12px 14px; }
  .writeup-card h3 { font-size: 12px; }
  .writeup-card p  { font-size: 10px; }

  .post {
    padding: 16px 14px;
    margin: 16px auto;
  }

  .post-header h1 {
    font-size: 12px;
    line-height: 1.8;
  }

  .back-link  { font-size: 7px; }
  .prose      { font-size: 12px; }
  .prose h1   { font-size: 12px; }
  .prose h2   { font-size: 11px; }
  .prose h3   { font-size: 10px; }

  pre[class*="language-"],
  .prose pre  { font-size: 11px !important; }

  .meta-pill  { font-size: 6px; }
}