/* =========================================================================
   Subrosa Technical & Cyber Security — stylesheet
   Brand tokens sampled directly from the supplied logo artwork:
     - Signature red   #E62C37  (swirl mark)
     - Wordmark grey   #87878A  (division-name type in the original artwork)
     - Charcoal grey   #3C3C3A  (parent-name type in the original artwork)
     - True black      #000000 (logo's native canvas — header/hero match it
       exactly so the artwork sits with no visible background seam)
   Fonts are self-hosted (not loaded from Google Fonts CDN) so no visitor
   IP address or font request is sent to a third party — relevant under
   UK GDPR / PECR, given the German case law on third-party font CDNs.
   ========================================================================= */

:root {
  /* --- Colour tokens -------------------------------------------------- */
  --black: #000000;
  --charcoal-900: #0c0d0f;   /* page background */
  --charcoal-800: #14161a;   /* section panels */
  --charcoal-700: #1b1e23;   /* cards */
  --hairline: rgba(255, 255, 255, 0.09);
  --hairline-strong: rgba(255, 255, 255, 0.16);

  --red: #e62c37;
  --red-dim: #5a1318;
  --red-glow: rgba(230, 44, 55, 0.35);

  --text-primary: #f1f1ef;
  --text-secondary: #a3a3a1;
  --text-muted: #6f6f6d;

  /* --- Type tokens ------------------------------------------------------ */
  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  /* --- Layout ------------------------------------------------------------ */
  --max-width: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 3px;
}

/* --- Self-hosted fonts --------------------------------------------------- */
@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/space-grotesk-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/space-grotesk-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/space-grotesk-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("../fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("../fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("../fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* --- Reset / base --------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--charcoal-900);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.08; font-weight: 700; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.05rem); line-height: 1.18; }
h3 { font-size: 1.05rem; line-height: 1.3; }

p { margin: 0 0 1rem; color: var(--text-secondary); }
p:last-child { margin-bottom: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid var(--hairline-strong);
  transition: border-color 0.15s ease, background-color 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}
.btn:hover, .btn:focus-visible { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }

.btn--primary {
  background: var(--red);
  border-color: var(--red);
  color: #0c0d0f;
  font-weight: 500;
}
.btn--primary:hover { background: #ff3b46; border-color: #ff3b46; }

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
}
.btn--ghost:hover { border-color: var(--text-secondary); }

/* --- Header --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--hairline);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}
.brand-mark { display: flex; align-items: center; gap: 0.7rem; }
.brand-icon { height: 34px; width: 34px; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}
.brand-name em {
  font-style: normal;
  font-weight: 500;
  color: var(--text-secondary);
}
.brand-caption {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 1px;
}
@media (max-width: 540px) {
  .brand-name em { display: block; font-size: 0.78em; }
}

.site-nav { display: flex; align-items: center; gap: 1.9rem; }
.site-nav a {
  font-size: 0.86rem;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}
.site-nav a:hover { color: var(--text-primary); }
.nav-cta { display: flex; gap: 0.6rem; }

.nav-toggle { display: none; }

@media (max-width: 860px) {
  .site-nav .nav-links { display: none; }
  .nav-cta .btn--ghost { display: none; }
}

/* --- Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  background: var(--black);
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}

/* Signature element: concentric scan rings, echoing the brand mark, used once */
.hero-rings {
  position: absolute;
  right: -120px;
  top: 50%;
  transform: translateY(-50%);
  width: 620px;
  height: 620px;
  pointer-events: none;
  opacity: 0.55;
}
.hero-rings svg { width: 100%; height: 100%; }

.hero .wrap {
  position: relative;
  padding-top: clamp(3.5rem, 8vw, 6.5rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}
.hero-content { max-width: 700px; }
.hero h1 { margin-top: 0.9rem; }
.hero-lede { margin-top: 1.4rem; font-size: 1.05rem; max-width: 620px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.1rem; }

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
}
.trust-badge::before {
  content: "✓";
  color: var(--red);
  font-size: 0.75rem;
}

/* --- Status strip (live ops readout) --------------------------------------- */
.status-strip {
  background: var(--charcoal-800);
  border-bottom: 1px solid var(--hairline);
}
.status-strip .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}
.status-item { display: flex; align-items: center; gap: 0.5rem; }
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 0 var(--red-glow);
  animation: pulse 2.4s infinite;
}
.status-dot--steady { background: #5fbf73; animation: none; box-shadow: none; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 var(--red-glow); }
  70%  { box-shadow: 0 0 0 7px rgba(230, 44, 55, 0); }
  100% { box-shadow: 0 0 0 0 rgba(230, 44, 55, 0); }
}
.status-strip strong { color: var(--text-primary); font-weight: 500; }

/* --- Generic section scaffolding -------------------------------------------- */
section { padding-top: clamp(3.4rem, 7vw, 5.5rem); padding-bottom: clamp(3.4rem, 7vw, 5.5rem); }
.section--alt { background: var(--charcoal-800); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }

.section-head { max-width: 680px; margin-bottom: 2.6rem; }
.section-head .eyebrow { margin-bottom: 0.8rem; display: block; }
.section-head p { margin-top: 1rem; }

/* --- About / intro ----------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-figures {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
.figure-card {
  background: var(--charcoal-900);
  padding: 1.3rem 1rem;
}
.figure-card .num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--red);
  display: block;
}
.figure-card .label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (max-width: 540px) {
  .about-figures { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* --- Capability groups / services -------------------------------------------- */
.capability-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.capability-card {
  background: var(--charcoal-700);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
}
.capability-card .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
  display: block;
  margin-bottom: 0.7rem;
}
.capability-card h3 { margin-bottom: 0.9rem; }
.capability-card ul { margin: 0; padding: 0; list-style: none; }
.capability-card li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  border-top: 1px solid var(--hairline);
  display: flex;
  gap: 0.6rem;
}
.capability-card li:first-of-type { border-top: none; padding-top: 0; }
.capability-card li::before {
  content: "›";
  color: var(--red);
  flex-shrink: 0;
}

@media (max-width: 980px) {
  .capability-groups { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .capability-groups { grid-template-columns: 1fr; }
}

/* --- Certifications ------------------------------------------------------------ */
.group-label {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 2.6rem 0 1.1rem;
}
.group-label:first-of-type { margin-top: 0; }
.group-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.group-dot--certified { background: #5fbf73; }
.group-dot--aligned { background: transparent; border: 1.5px solid var(--text-secondary); }

.cert-row { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.cert-badge {
  flex: 1 1 280px;
  background: var(--charcoal-700);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}
.cert-badge .ring {
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 2px solid var(--red);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--red);
  text-align: center;
  line-height: 1.1;
}
.cert-badge--aligned .ring { border-color: var(--text-secondary); color: var(--text-secondary); }
.cert-badge h3 { margin-bottom: 0.35rem; }
.cert-badge p { font-size: 0.9rem; margin: 0; }
.cert-badge .scope {
  display: block;
  margin-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.standards-note {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 720px;
}

/* --- SOC integration ------------------------------------------------------------- */
.soc-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.soc-diagram {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 360px;
  margin: 0 auto;
}
.soc-diagram svg { width: 100%; height: 100%; }
@media (max-width: 820px) {
  .soc-grid { grid-template-columns: 1fr; }
  .soc-diagram { order: -1; max-width: 240px; }
}

.feed-list { margin: 1.4rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.55rem; }
.feed-list li {
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--text-secondary);
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
}
.feed-list li::before { content: "::"; color: var(--red); }

/* --- Contact ----------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.4rem;
}
.contact-card {
  background: var(--charcoal-700);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
}
.contact-card .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.8rem;
}
.contact-card a, .contact-card address {
  font-style: normal;
  color: var(--text-primary);
  font-size: 0.98rem;
  line-height: 1.55;
}
.contact-card a:hover { color: var(--red); }

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-banner {
  margin-top: 2.4rem;
  padding: 1.4rem 1.6rem;
  border: 1px solid var(--red-dim);
  background: linear-gradient(180deg, rgba(230,44,55,0.07), rgba(230,44,55,0.02));
  border-radius: var(--radius);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.contact-banner p { color: var(--text-primary); margin: 0; font-size: 0.95rem; }

/* --- Footer ----------------------------------------------------------------------- */
.site-footer {
  background: var(--black);
  border-top: 1px solid var(--hairline);
  padding-top: 2.6rem;
  padding-bottom: 2.6rem;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.6rem;
  align-items: flex-start;
}
.footer-brand { display: flex; align-items: center; gap: 0.7rem; }
.footer-brand img { height: 26px; width: auto; }
.footer-brand span { font-size: 0.85rem; color: var(--text-secondary); }
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; font-size: 0.85rem; color: var(--text-secondary); }
.footer-links a:hover { color: var(--text-primary); }
.footer-legal {
  margin-top: 2rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--hairline);
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
}
.footer-legal .placeholder { color: #8a5a5d; }

/* --- Skip link / accessibility ------------------------------------------------------ */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--red);
  color: #0c0d0f;
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: var(--gutter); top: 0.6rem; }