/* sentinel ai defense - styles
   dark, terminal-ish. system font for prose, mono for the techy bits.
   deliberately not pixel-perfect in a couple places. */

:root {
  --bg: #0d0f12;
  --bg-alt: #121519;
  --panel: #16191e;
  --panel-2: #1b1f25;
  --ink: #d7dce2;
  --ink-dim: #9aa3ad;
  --muted: #5f6b76;
  --line: #262c33;
  --accent: #5ad17a;     /* terminal green */
  --accent-dim: #3f9a59;
  --warn: #e0b341;
  --danger: #e05c5c;
  --link: #7fb6ff;
  --mono: "SFMono-Regular", "JetBrains Mono", "Consolas", "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* faint scanline-ish texture, very subtle */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.012) 0px,
    rgba(255,255,255,0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  z-index: 1;
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--muted); }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 650; letter-spacing: -0.01em; }
h2 { font-size: 1.85rem; margin: 0 0 12px; }
h3 { font-size: 1.2rem; }

.kicker, .section-tag, .team-label, .post-cve, .case-tag, .term-title {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent-dim);
  letter-spacing: 0.02em;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13,15,18,0.82);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 58px;
}
.brand {
  font-family: var(--mono);
  color: var(--ink);
  font-size: 0.98rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--accent); }
.blink { animation: blink 1.2s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--ink-dim); font-size: 0.92rem; }
.nav a:hover { color: var(--ink); text-decoration: none; }
.nav-cta {
  border: 1px solid var(--accent-dim);
  color: var(--accent) !important;
  padding: 6px 12px;
  border-radius: 4px;
}
.nav-cta:hover { background: rgba(90,209,122,0.08); }

.nav-toggle {
  display: none;
  font-family: var(--mono);
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  z-index: 2;
  padding: 78px 0 64px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 380px at 78% -8%, rgba(90,209,122,0.06), transparent 60%),
    var(--bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.kicker { display: block; margin-bottom: 14px; }
.hero h1 {
  font-size: 2.6rem;
  margin: 0 0 20px;
  max-width: 16ch;
}
.lede {
  color: var(--ink-dim);
  font-size: 1.08rem;
  max-width: 54ch;
  margin: 0 0 26px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-note {
  font-size: 0.9rem;
  color: var(--muted);
  border-left: 2px solid var(--line);
  padding-left: 12px;
  max-width: 46ch;
}

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.92rem;
  padding: 11px 18px;
  border-radius: 5px;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #08130c;
  font-weight: 600;
}
.btn-primary:hover { background: #6fdc8c; }
/* ghost button is intentionally a slightly different green than the accent */
.btn-ghost {
  border-color: #2f7d47;
  color: #74c98c;
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* terminal block */
.term {
  background: #0a0c0f;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
  box-shadow: 0 18px 40px -22px rgba(0,0,0,0.8);
  /* nudge it down a touch so it's not perfectly aligned with the h1 */
  margin-top: 10px;
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  background: #14171b;
  border-bottom: 1px solid var(--line);
}
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.dot.red { background: #e05c5c; }
.dot.yellow { background: #e0b341; }
.dot.green { background: #5ad17a; }
.term-title { margin-left: 8px; color: var(--muted); }
.term-body {
  margin: 0;
  padding: 16px 15px 20px;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: #b9c4cd;
  white-space: pre-wrap;
  min-height: 168px;
}
.term-body .ln-ok { color: var(--accent); }
.term-body .ln-warn { color: var(--warn); }

/* ---------- generic section ---------- */
.section {
  position: relative;
  z-index: 2;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}
.section-alt { background: var(--bg-alt); }
.section-tag { display: block; margin-bottom: 10px; }
.section-intro {
  color: var(--ink-dim);
  max-width: 60ch;
  margin: 0 0 32px;
}

/* ---------- service cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 22px 20px;
}
.card h3 { margin: 0 0 12px; }
.card p { font-size: 0.95rem; color: var(--ink-dim); margin: 0 0 12px; }
.card .caveat {
  font-size: 0.86rem;
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: 11px;
  margin-bottom: 0;
}
/* the red-team card gets a faint left accent so the row isn't dead symmetric */
.card-accent { border-left: 2px solid var(--accent-dim); }

/* ---------- about ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 46px;
  align-items: start;
}
.about-copy p { color: var(--ink-dim); margin: 0 0 16px; }
.about-copy p:first-of-type { color: var(--ink); }

.team {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 20px 18px;
}
.team-label { display: block; margin-bottom: 14px; }
.team-list { list-style: none; margin: 0; padding: 0; }
.team-list li {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.team-list li:last-child { border-bottom: none; padding-bottom: 0; }
.t-name { display: block; font-weight: 600; color: var(--ink); }
.t-role { display: block; font-family: var(--mono); font-size: 0.78rem; color: var(--accent-dim); margin: 2px 0 4px; }
.t-note { display: block; font-size: 0.86rem; color: var(--muted); }

/* ---------- case studies ---------- */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.case {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
}
.case-tag {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--muted);
}
.case h3 { margin: 0 0 12px; font-size: 1.08rem; }
.case > p { font-size: 0.92rem; color: var(--ink-dim); flex-grow: 1; }
.case-stats {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
}
.case-stats li {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--ink-dim);
  padding: 2px 0;
}
.case-stats b { color: var(--accent); }

/* ---------- blog post ---------- */
.post {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 28px 26px;
  max-width: 760px;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.8rem;
  margin-bottom: 14px;
}
.post-date { color: var(--muted); }
.post-cve { color: var(--accent); }
.post-sev { padding: 2px 8px; border-radius: 3px; font-size: 0.74rem; }
.sev-high { background: rgba(224,92,92,0.12); color: #f08a8a; border: 1px solid rgba(224,92,92,0.3); }
.sev-crit { background: rgba(224,60,60,0.18); color: #ff8585; border: 1px solid rgba(224,60,60,0.45); font-weight: 600; }
.post h3 { font-size: 1.4rem; margin: 0 0 16px; }
.post h4 { margin: 22px 0 8px; color: var(--ink); font-size: 1.02rem; }
.post p { color: var(--ink-dim); margin: 0 0 14px; }
.post-list { margin: 0 0 14px; padding-left: 20px; color: var(--ink-dim); }
.post-list li { margin-bottom: 9px; }
.post-foot {
  font-size: 0.86rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: 18px;
}
.blog-more {
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 56ch;
  margin-top: 22px;
}

/* ---------- research index page ---------- */
.research-hero {
  background:
    radial-gradient(900px 380px at 78% -8%, rgba(90,209,122,0.06), transparent 60%),
    var(--bg);
}
.research-title { font-size: 2.4rem; margin: 0 0 14px; }

.post-index { list-style: none; margin: 0; padding: 0; }
.post-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  margin-bottom: 18px;
  transition: border-color 0.15s ease;
}
.post-card:hover { border-color: var(--accent-dim); }
.post-card-link { display: block; padding: 24px 24px 22px; color: inherit; }
.post-card-link:hover { text-decoration: none; }
.post-card-title { font-size: 1.4rem; margin: 4px 0 12px; color: var(--ink); }
.post-card-excerpt { color: var(--ink-dim); font-size: 0.96rem; margin: 0 0 14px; max-width: 70ch; }
.post-cwe { color: var(--ink-dim); }
.post-card-more { font-family: var(--mono); font-size: 0.88rem; color: var(--accent); }

/* ---------- article (single post) page ---------- */
.article-wrap { max-width: 760px; }
.article-back { font-family: var(--mono); font-size: 0.86rem; margin: 0 0 22px; }
.article-head { border-bottom: 1px solid var(--line); padding-bottom: 22px; margin-bottom: 26px; }
.article-title { font-size: 2.1rem; margin: 6px 0 16px; }
.article-standfirst { color: var(--ink-dim); font-size: 1.08rem; margin: 0; max-width: 64ch; }
.article-body h2 {
  font-size: 1.35rem;
  margin: 30px 0 12px;
  padding-top: 6px;
}
.article-body p { color: var(--ink-dim); margin: 0 0 14px; }
.article-body code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--accent);
  word-break: break-word;
}
.article-body ol.post-list { padding-left: 22px; }
.article-foot { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 18px; }
.article-foot .post-foot { border-top: none; padding-top: 0; margin-top: 0; }

@media (max-width: 860px) {
  .research-title { font-size: 1.9rem; }
  .article-title { font-size: 1.7rem; }
}

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: start;
}
.contact-grid p { color: var(--ink-dim); }
.contact-direct {
  font-family: var(--mono);
  font-size: 0.88rem;
  margin-top: 18px;
}
.contact-form {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 22px 20px;
}
.contact-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-dim);
  margin-bottom: 14px;
}
.contact-form input,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  background: #0c0e11;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 10px 11px;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-dim);
}
.contact-form input.bad,
.contact-form textarea.bad {
  border-color: var(--danger);
}
.form-fineprint { font-size: 0.8rem; color: var(--muted); margin: 12px 0 0; }

/* ---------- footer ---------- */
.footer {
  position: relative;
  z-index: 2;
  padding: 36px 0;
  background: #0a0c0e;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-small { color: var(--muted); font-size: 0.85rem; margin: 6px 0 0; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { color: var(--ink-dim); font-size: 0.88rem; }
.copyright {
  width: 100%;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin: 8px 0 0;
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .nav {
    position: absolute;
    top: 58px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; width: 100%; }
  .nav-toggle { display: inline-block; }

  .hero-grid,
  .about-grid,
  .cards,
  .cases,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 { font-size: 2rem; }
  .term { margin-top: 4px; }
}