/* ─────────────────────────────────────────────────────────────
   ReturnZero — main.css
   Typefaces: Syne (display) · Lora (body) · IBM Plex Mono (code)
   ───────────────────────────────────────────────────────────── */

:root {
  --bg:         #0b0d11;
  --bg2:        #111318;
  --bg3:        #181b22;
  --border:     #23272f;
  --accent:     #e85d3a;
  --accent2:    #f0a04b;
  --green:      #4caf7d;
  --red:        #e05252;
  --blue:       #4a9eff;
  --text:       #c8cdd8;
  --text-dim:   #6b7385;
  --text-head:  #eef0f5;
  --mono:       'IBM Plex Mono', monospace;
  --serif:      'Lora', serif;
  --display:    'Syne', sans-serif;
  --radius:     4px;
  --max-w:      760px;
  --max-w-wide: 1100px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2rem;
  background: rgba(11,13,17,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: var(--mono);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: -.01em;
}
.nav-logo-return { color: var(--accent); }
.nav-logo-zero  { color: var(--text-head); }
.nav-links {
  display: flex;
  gap: 2rem;
  font-family: var(--display);
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: var(--text-head); }

/* ── Hero ── */
.hero {
  min-height: 88vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
}
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 4rem; }
  .hero-deco { display: none; }
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1.6rem;
}
.label-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:.4; transform:scale(.7); }
}
.hero-headline {
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  color: var(--text-head);
  margin-bottom: 1.6rem;
  letter-spacing: -.02em;
}
.hero-highlight {
  color: var(--accent);
  position: relative;
  display: inline-block;
}
.hero-highlight::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  opacity: .4;
  border-radius: 2px;
}
.hero-sub {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 440px;
  margin-bottom: 2.4rem;
  line-height: 1.65;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn-primary {
  font-family: var(--display);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--accent);
  color: #fff;
  padding: .75rem 1.6rem;
  border-radius: var(--radius);
  transition: background .2s, transform .15s;
}
.btn-primary:hover { background: #d04f2e; transform: translateY(-1px); }
.btn-ghost {
  font-family: var(--display);
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: .75rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: .5rem;
  transition: color .2s, border-color .2s;
}
.btn-ghost:hover { color: var(--text-head); border-color: var(--text-dim); }

/* ── Hero decorative code block ── */
.hero-deco {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.deco-code {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  font-family: var(--mono);
  font-size: .8rem;
  line-height: 1.8;
  overflow-x: auto;
}
.deco-code pre { background: none; border: none; padding: 0; margin: 0; }
.dc-kw { color: #c678dd; }
.dc-fn { color: #61afef; }
.dc-st { color: #98c379; }
.dc-cm { color: #5c6370; font-style: italic; }
.deco-verdict {
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--text-dim);
  padding: .6rem 1rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: .6rem;
}
.verdict-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}
.verdict-fail { color: var(--red); }

/* ── Verdict badges ── */
.verdict-badge {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .18rem .55rem;
  border-radius: 2px;
}
.verdict-exploitable     { background: rgba(224,82,82,.15);  color: var(--red);   border: 1px solid rgba(224,82,82,.3); }
.verdict-not-exploitable { background: rgba(76,175,125,.12); color: var(--green); border: 1px solid rgba(76,175,125,.3); }
.verdict-partial         { background: rgba(240,160,75,.12); color: var(--accent2); border: 1px solid rgba(240,160,75,.3); }

/* ── Posts section ── */
.posts-section {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 5rem 2rem;
  border-top: 1px solid var(--border);
}
.posts-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}
.posts-header h2 {
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.posts-all {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--accent);
  transition: color .2s;
}
.posts-all:hover { color: var(--accent2); }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.post-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  transition: border-color .2s, transform .2s;
}
.post-card:hover {
  border-color: rgba(232,93,58,.4);
  transform: translateY(-2px);
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--text-dim);
}
.post-card-cve {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--accent);
  letter-spacing: .06em;
}
.post-card-title {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-head);
}
.post-card-title a { transition: color .2s; }
.post-card-title a:hover { color: var(--accent); }
.post-card-summary {
  font-size: .88rem;
  color: var(--text-dim);
  line-height: 1.6;
  flex: 1;
}
.post-card-footer {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  margin-top: .3rem;
}
.tag {
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: .15rem .5rem;
  border-radius: 2px;
}
a.tag:hover { color: var(--text); border-color: var(--text-dim); }

/* ── About strip ── */
.about-strip {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 4rem 2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}
@media (max-width: 700px) {
  .about-inner { grid-template-columns: 1fr; gap: 2rem; }
}
.about-text h2 {
  font-family: var(--display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-head);
  margin-bottom: .9rem;
}
.about-text p { color: var(--text-dim); font-size: .95rem; margin-bottom: .5rem; }
.about-stats {
  display: flex;
  gap: 2.5rem;
  flex-shrink: 0;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--display);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-head);
  line-height: 1;
}
.stat-label {
  display: block;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: .3rem;
}

/* ── Article page ── */
.article {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}
.article-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.article-cve-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  background: var(--accent);
  color: #fff;
  padding: .25rem .75rem;
  border-radius: 2px;
  margin-bottom: 1.4rem;
}
.article-title {
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text-head);
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -.02em;
}
.article-subtitle {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 1.2rem;
  font-style: italic;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: .9rem;
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}
.article-affected {
  margin-top: 1.1rem;
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
}
.affected-label { color: var(--text-dim); }
.article-affected code {
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: .1rem .45rem;
  border-radius: 2px;
  color: var(--accent2);
}

/* ── Article body typography ── */
.article-body h2 {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-head);
  margin: 3rem 0 1.1rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--border);
}
.article-body h2::before {
  content: '// ';
  color: var(--accent);
  font-family: var(--mono);
}
.article-body h3 {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-head);
  margin: 2rem 0 .7rem;
}
.article-body p { margin-bottom: 1.1rem; }
.article-body a { color: var(--accent2); border-bottom: 1px solid transparent; transition: border-color .2s; }
.article-body a:hover { border-color: var(--accent2); }
.article-body ul, .article-body ol { margin: 0 0 1.1rem 1.4rem; }
.article-body li { margin-bottom: .35rem; }
.article-body strong { color: var(--text-head); font-weight: 600; }
.article-body em { font-style: italic; }
.article-body code {
  font-family: var(--mono);
  font-size: .83em;
  background: var(--bg3);
  color: #e0a07a;
  padding: .15em .4em;
  border-radius: 3px;
}
.article-body pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  overflow-x: auto;
  margin: 1.4rem 0 1.8rem;
  font-family: var(--mono);
  font-size: .8rem;
  line-height: 1.65;
}
.article-body pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
.article-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.5rem 0;
  padding: .8rem 1.4rem;
  background: var(--bg2);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-dim);
  font-style: italic;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
  margin: 1.4rem 0 1.8rem;
}
.article-body th {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding: .5rem .8rem;
  text-align: left;
}
.article-body td {
  padding: .65rem .8rem;
  border-bottom: 1px solid rgba(35,39,47,.7);
  vertical-align: top;
}
.article-tags {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

/* ── List page ── */
.list-page { max-width: var(--max-w-wide); margin: 0 auto; padding: 4rem 2rem 6rem; }
.list-header { margin-bottom: 3rem; }
.list-header h1 {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-head);
  margin-bottom: .4rem;
}
.list-header p { font-family: var(--mono); font-size: .8rem; color: var(--text-dim); }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
}
.footer-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}
.footer-brand { font-weight: 600; }
.footer-brand .return { color: var(--accent); }
.footer-sep { color: var(--border); }
.footer a { transition: color .2s; }
.footer a:hover { color: var(--accent2); }

/* ── Syntax highlight (Nord theme from Hugo) ── */
.chroma { background: var(--bg2) !important; }

/* ── ReturnZero brand overrides ── */
.nav-logo-return { color: var(--text-head); font-weight: 800; }
.nav-logo-zero   { color: var(--accent);   font-weight: 800; }

.footer-brand .return { color: var(--text-head); }
.footer-brand .zero   { color: var(--accent); }

.verdict-zero { color: var(--accent); }

.dc-nu { color: #d19a66; }