/* ==========================================================================
   CTRL-ALT-Security public site
   Design notes: the keycap is the signature. Everything else stays quiet.
   Mono carries structure and labels, sans carries reading text.
   ========================================================================== */

:root {
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --wrap: 1140px;
  --radius: 10px;
  --radius-sm: 6px;
  --speed: 180ms;
}

html[data-theme="dark"] {
  --bg: #090D11;
  --bg-2: #0D1319;
  --surface: #111921;
  --surface-2: #16202A;
  --line: #1F2C36;
  --line-soft: #17222B;
  --text: #E4EDF4;
  --text-strong: #FFFFFF;
  --muted: #8A9AA8;
  --accent: #8DC63F;
  --accent-soft: rgba(141, 198, 63, 0.14);
  --accent-line: rgba(141, 198, 63, 0.35);
  --accent-ink: #0A0F06;
  --key-face-a: #333C45;
  --key-face-b: #222A32;
  --key-edge: #10161C;
  --key-text: #DCE6EE;
  --shadow: 0 18px 40px -22px rgba(0, 0, 0, 0.9);
  --grid: rgba(141, 198, 63, 0.055);
}

html[data-theme="light"] {
  --bg: #F1F4EF;
  --bg-2: #E9EEE5;
  --surface: #FFFFFF;
  --surface-2: #F6F8F3;
  --line: #D5DDD0;
  --line-soft: #E3E9DE;
  --text: #171D22;
  --text-strong: #0B0F13;
  --muted: #5A6670;
  --accent: #3E7A0E;
  --accent-soft: rgba(62, 122, 14, 0.10);
  --accent-line: rgba(62, 122, 14, 0.30);
  --accent-ink: #FFFFFF;
  --key-face-a: #FFFFFF;
  --key-face-b: #E7EBE2;
  --key-edge: #BEC7B6;
  --key-text: #1B2228;
  --shadow: 0 16px 34px -24px rgba(20, 30, 15, 0.55);
  --grid: rgba(30, 60, 10, 0.05);
}

/* Author level display rules beat the UA [hidden] rule, so force it. */
[hidden] { display: none !important; }

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

/* Target for the brand link. This deliberately sits above the header rather
   than on it: the header is position sticky, so anchoring to it would scroll
   relative to wherever it is currently pinned instead of to the document top. */
#top { position: absolute; top: 0; left: 0; width: 0; height: 0; scroll-margin-top: 0; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.icon { display: block; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; font-family: var(--font-mono);
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- Keycaps: the signature element ---------- */

.keycaps { display: inline-flex; align-items: center; gap: 6px; }

.key {
  display: inline-flex;
  background: var(--key-edge);
  border-radius: 8px;
  padding-bottom: 3px;
  transition: transform var(--speed) ease, padding-bottom var(--speed) ease;
}
.key-face {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--key-face-a), var(--key-face-b));
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--key-text);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.key-accent { background: color-mix(in srgb, var(--accent) 45%, #000); }
.key-accent .key-face {
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 72%, #000));
  border-color: color-mix(in srgb, var(--accent) 60%, #000);
  color: var(--accent-ink);
}

.keycaps-sm .key-face { min-width: 40px; height: 28px; font-size: 12px; padding: 0 8px; }
.keycaps-lg .key-face { min-width: 84px; height: 62px; font-size: 20px; padding: 0 14px; border-radius: 10px; }
.keycaps-lg .key { border-radius: 12px; padding-bottom: 6px; }

.brand:hover .key,
.keycaps-lg:hover .key { transform: translateY(2px); padding-bottom: 1px; }
.keycaps-lg:hover .key { padding-bottom: 2px; }

/* ---------- Top bar ---------- */

.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar-inner {
  display: flex; align-items: center; gap: 18px;
  min-height: 66px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--text-strong); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-name { font-family: var(--font-mono); font-size: 16px; font-weight: 600; letter-spacing: -0.01em; white-space: nowrap; }
.brand-ctrl { color: var(--text-strong); }
.brand-sec { color: var(--accent); }

.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  padding: 8px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  text-decoration: none;
  transition: color var(--speed), background var(--speed), border-color var(--speed);
}
.nav a:hover { color: var(--text-strong); background: var(--surface); border-color: var(--line); text-decoration: none; }
.nav a.is-active { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }

.topbar-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--speed), color var(--speed);
}
.icon-btn:hover { border-color: var(--accent-line); color: var(--accent); }
.nav-toggle { display: none; }
html[data-theme="dark"] .theme-dark { display: none; }
html[data-theme="light"] .theme-light { display: none; }

/* ---------- Hero ---------- */

.hero { position: relative; padding: 84px 0 76px; overflow: hidden; border-bottom: 1px solid var(--line-soft); }
.grid-bg {
  position: absolute; inset: -1px 0 0 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 30% 20%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 30% 20%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr); gap: 48px; align-items: center; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}
.prompt { color: var(--accent); font-weight: 700; }
.cursor {
  display: inline-block; width: 8px; height: 14px;
  background: var(--accent); margin-left: 5px; vertical-align: -2px;
  animation: blink 1.15s steps(2, start) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.wordmark {
  font-family: var(--font-mono);
  font-size: clamp(42px, 8.2vw, 92px);
  line-height: 0.95;
  letter-spacing: -0.045em;
  margin: 0 0 14px;
  font-weight: 700;
}
.wm-ctrl { color: var(--text-strong); }
.wm-sec { color: var(--accent); }

.tagline {
  font-family: var(--font-mono);
  font-size: clamp(13px, 2vw, 16px);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 26px;
  padding-left: 4px;
  border-left: 3px solid var(--accent);
  padding-block: 2px;
  padding-inline-start: 14px;
}
.hero-lede { max-width: 58ch; color: var(--text); font-size: 18px; margin: 0 0 30px; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 14px; font-weight: 600;
  padding: 12px 20px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); cursor: pointer;
  text-decoration: none;
  transition: transform var(--speed), background var(--speed), border-color var(--speed), color var(--speed);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 86%, #fff); }
.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover { border-color: var(--accent-line); color: var(--accent); }
.btn-small { padding: 9px 14px; font-size: 13px; background: var(--surface); color: var(--text); }
.btn-small:hover { border-color: var(--accent-line); color: var(--accent); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }

.hero-mark { display: flex; flex-direction: column; align-items: flex-end; gap: 18px; }
.hero-mark-note {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin: 0;
}

/* ---------- Sections ---------- */

.section { padding: 76px 0; border-bottom: 1px solid var(--line-soft); }
.section-alt { background: var(--bg-2); }
.section-title {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-strong);
  margin: 0 0 14px;
  max-width: 24ch;
}
.section-lede { color: var(--muted); max-width: 68ch; margin: 0 0 32px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.section-meta { font-family: var(--font-mono); font-size: 12px; color: var(--muted); margin: 0 0 18px; }

.prose p { margin: 0 0 16px; }
.prose p:last-child { margin-bottom: 0; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; }
.prose li { margin-bottom: 7px; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose code { font-family: var(--font-mono); font-size: 0.9em; background: var(--surface-2); padding: 2px 6px; border-radius: 4px; }
.prose blockquote { margin: 0 0 16px; padding-left: 16px; border-left: 3px solid var(--accent-line); color: var(--muted); }
.prose-sm { font-size: 15px; color: var(--muted); }
.prose-sm p { margin-bottom: 12px; }

/* ---------- About ---------- */

.about-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.75fr); gap: 46px; }
.block-title { font-family: var(--font-mono); font-size: 18px; margin: 26px 0 10px; color: var(--text-strong); }
.block-title:first-child { margin-top: 0; }
.about-side {
  border-left: 1px solid var(--line);
  padding-left: 28px;
}
.side-title {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 12px;
}
.chips { list-style: none; margin: 0 0 28px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-family: var(--font-mono); font-size: 12px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 6px 12px; color: var(--text);
}
.chips-alt li { border-color: var(--accent-line); color: var(--accent); background: var(--accent-soft); }
.side-note { font-size: 13.5px; color: var(--muted); margin: 0; padding-top: 16px; border-top: 1px dashed var(--line); }

/* ---------- News ---------- */

.news-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.news-item { border-bottom: 1px solid var(--line); }
.news-item > a {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr) 118px;
  grid-template-areas: "source title date" "source summary date";
  gap: 2px 22px;
  padding: 18px 16px 18px 14px;
  color: var(--text);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background var(--speed), border-color var(--speed);
}
.news-item > a:hover { background: var(--surface); border-left-color: var(--accent); text-decoration: none; }
.news-source {
  grid-area: source;
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); padding-top: 3px;
}
.news-title { grid-area: title; font-weight: 600; color: var(--text-strong); line-height: 1.4; }
.news-summary { grid-area: summary; font-size: 14px; color: var(--muted); }
.news-date { grid-area: date; font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); text-align: right; padding-top: 3px; }
.news-item.is-pinned > a { border-left-color: var(--accent-line); background: var(--accent-soft); }
.empty { color: var(--muted); font-family: var(--font-mono); font-size: 14px; }

/* ---------- Cards ---------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column;
  transition: border-color var(--speed), transform var(--speed);
}
.card::before {
  content: ""; position: absolute; left: 24px; right: 24px; top: -1px; height: 2px;
  background: var(--accent); opacity: 0; transition: opacity var(--speed);
}
.card:hover { border-color: var(--accent-line); transform: translateY(-2px); }
.card:hover::before { opacity: 1; }
.card h3 { font-family: var(--font-mono); font-size: 17px; letter-spacing: -0.02em; margin: 0 0 8px; color: var(--text-strong); }
.card-sub { color: var(--muted); font-size: 14.5px; margin: 0 0 12px; }
.card-img { width: 100%; height: 148px; object-fit: cover; border-radius: var(--radius-sm); margin-bottom: 16px; border: 1px solid var(--line); }
.card-link {
  margin-top: auto; padding-top: 14px;
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 13px; color: var(--accent);
}
.card-link:hover { text-decoration: underline; }
.card-foot { margin-top: auto; padding-top: 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-foot .card-link { margin-top: 0; padding-top: 0; }
.badge {
  align-self: flex-start;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid var(--accent-line); border-radius: 4px;
  padding: 3px 8px; margin-bottom: 10px;
}
.post-platform {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 10px;
}
.post-date { font-family: var(--font-mono); font-size: 12px; color: var(--muted); }

/* ---------- Training resources ---------- */

.resources { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.resource {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: center;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 24px;
  transition: border-color var(--speed);
}
.resource:hover { border-color: var(--accent-line); }
.resource h3 { font-family: var(--font-mono); font-size: 16px; margin: 0 0 4px; color: var(--text-strong); }
.resource-side { display: flex; align-items: center; gap: 12px; }
.resource-side .badge { margin-bottom: 0; }

/* ---------- Social ---------- */

.socials { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.social {
  display: flex; align-items: center; gap: 14px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px;
  color: var(--text); text-decoration: none;
  transition: border-color var(--speed), transform var(--speed);
}
.social:hover { border-color: var(--accent-line); transform: translateY(-2px); text-decoration: none; }
.social-icon { display: flex; flex: 0 0 auto; color: var(--accent); }
.social-text { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.social-text strong { font-family: var(--font-mono); font-size: 14.5px; color: var(--text-strong); }
.social-text small,
.social-text strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.social-text small { font-size: 12.5px; color: var(--muted); }
.social-go { margin-left: auto; flex: 0 0 auto; padding-left: 8px; color: var(--muted); transition: transform var(--speed), color var(--speed); }
.social:hover .social-go { transform: translateX(3px); color: var(--accent); }

/* ---------- Contact ---------- */

.contact-wrap { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr); gap: 52px; align-items: start; }
.contact-points { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.contact-points li { display: flex; align-items: center; gap: 10px; font-size: 14.5px; color: var(--muted); }
.contact-points .icon { color: var(--accent); flex: none; }

.contact-form {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow);
}
.field { margin-bottom: 16px; }
.field label {
  display: block; font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 7px;
}
.field input, .field textarea {
  width: 100%; padding: 11px 13px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 15.5px;
  transition: border-color var(--speed);
}
.field input:focus, .field textarea:focus { border-color: var(--accent); outline: none; }
.field textarea { resize: vertical; min-height: 130px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-status { font-family: var(--font-mono); font-size: 13px; margin: 0; color: var(--muted); }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #E5484D; }

/* ---------- Footer ---------- */

.footer { padding: 52px 0 34px; background: var(--bg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; padding-bottom: 28px; border-bottom: 1px solid var(--line-soft); }
.footer-brand p { margin: 10px 0 0; font-size: 14px; color: var(--text-strong); }
.footer-tag { font-family: var(--font-mono); font-size: 11.5px !important; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted) !important; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.footer-links a { font-family: var(--font-mono); font-size: 13px; color: var(--muted); }
.footer-links a:hover { color: var(--accent); }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); color: var(--muted);
}
.footer-social a:hover { color: var(--accent); border-color: var(--accent-line); }
.footer-legal { padding-top: 22px; }
.footer-legal p { font-size: 13px; color: var(--muted); max-width: 90ch; margin: 0 0 12px; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-family: var(--font-mono); font-size: 12px; }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--accent); }
.dot { color: var(--line); }
.build { color: var(--muted); opacity: 0.7; }

/* ---------- Responsive ---------- */

@media (max-width: 1000px) {
  .hero-inner { grid-template-columns: 1fr; gap: 34px; }
  .hero-mark { align-items: flex-start; }
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .about-side { border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 26px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 30px; }
  .socials { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: absolute; top: 66px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 11px 12px; font-size: 14px; }
  .topbar-inner { position: relative; }
  .news-item > a {
    grid-template-columns: 1fr auto;
    grid-template-areas: "source date" "title title" "summary summary";
    gap: 6px 14px;
  }
  .news-date { text-align: right; }
  .resource { grid-template-columns: 1fr; gap: 16px; align-items: start; }
  .section { padding: 56px 0; }
  .hero { padding: 56px 0 52px; }
  .socials { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .brand-name { font-size: 13px; }
  .brand { gap: 8px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
}

@media (max-width: 480px) {
  .keycaps-lg .key-face { min-width: 62px; height: 48px; font-size: 16px; }
  .contact-form { padding: 20px; }
  .brand .key-face { min-width: 34px; height: 26px; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

@media print {
  .topbar, .hero-mark, .contact-form, .nav { display: none !important; }
  body { background: #fff; color: #000; }
}