/* ============================================
   VIRTUS CYBERSECURITY — virtuscybersecurity.com
   Design: Professional cyber. Precision over flash.
   ============================================ */

/* --- Variables --- */
:root {
  --bg: #0a0a0a;
  --bg-card: #151515;
  --green: #4ade80;
  --green-dark: #22c55e;
  --green-muted: rgba(74, 222, 128, 0.12);
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --border: #1f2937;
  --sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  --max-w: 1120px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-dark); }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }

/* --- Typography --- */
h1, h2, h3, h4 { line-height: 1.2; color: var(--text); font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
h4 { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--green); }

p { margin-bottom: 1.25rem; }
p:last-child { margin-bottom: 0; }

.lead { font-size: 1.15rem; color: var(--text-muted); line-height: 1.8; }

/* --- Utility --- */
.text-green { color: var(--green); }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--green);
  color: #0a0a0a;
}
.btn-primary:hover {
  background: var(--green-dark);
  color: #0a0a0a;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--green);
}
.btn-outline:hover {
  background: var(--green-muted);
  color: var(--green);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.nav.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  color: var(--green);
  text-decoration: none;
  text-transform: uppercase;
}
.nav-logo:hover { color: var(--green-dark); }

.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--green);
}
.nav-links a.coming-soon {
  color: var(--text-dim);
  cursor: default;
  pointer-events: none;
}

.nav-links .nav-cta {
  background: var(--green);
  color: #0a0a0a;
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  font-weight: 600;
}
.nav-links .nav-cta:hover {
  background: var(--green-dark);
  color: #0a0a0a;
}

/* --- Mobile Nav Toggle --- */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  z-index: 200;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Responsive Nav (Desktop) --- */
@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .nav-links {
    display: flex;
  }
}

/* --- Mobile Nav (Full-screen overlay) --- */
@media (max-width: 767px) {
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    font-size: 1.25rem;
    z-index: 150;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    font-size: 1.15rem;
  }
}

/* --- Hero Section --- */
.hero {
  padding: 8rem 2rem 5rem;
  text-align: center;
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 1.25rem;
  color: var(--text);
}

.hero h1 .accent {
  color: var(--green);
}

.hero .lead {
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Credential Badges --- */
.credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.credential-badge {
  background: var(--green-muted);
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 4px;
  padding: 0.4rem 1rem;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* --- Section Layout --- */
.section {
  padding: 5rem 2rem;
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3rem;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--green);
  margin-top: 0.5rem;
}

.section-header .lead {
  max-width: 600px;
}

.section-alt {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

/* --- Service Cards --- */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

.service-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 1.25rem;
  color: var(--green);
}

.service-card h3 {
  margin-bottom: 0.75rem;
  color: var(--text);
}

.service-card p {
  color: var(--text-muted);
  flex: 1;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.5rem;
  color: var(--green);
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap var(--transition);
}
.service-link:hover {
  gap: 0.65rem;
  color: var(--green-dark);
}

/* --- Trust/Credential Cards --- */
.trust-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.75rem;
}

.trust-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--green);
}

.trust-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  padding: 5rem 2rem;
}

.cta-section h2 {
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 2rem;
}

/* --- Disclaimer / Legal --- */
.disclaimer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 0 6px 6px 0;
  padding: 1rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 2rem 0;
}

/* --- Stage 0 classroom CTA (R-CLASSROOM-STAGE-0-STRIP-PUBLIC-MD-LINKS-2026-05-13) ---
   Used on the 7 public course pages where the Curriculum Draft section
   was stripped pending the Stage 1 /classroom/ rollout.  Palette-B muted
   color, no underline, not-allowed cursor signals the link is a
   placeholder pointing at the coming-soon classroom surface. */
.cta {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease;
}
.cta--disabled {
  color: var(--text-muted);
  background: var(--bg-card);
  border-color: var(--border);
  cursor: not-allowed;
  pointer-events: none;
}
.cta--disabled:hover { text-decoration: none; }

/* --- Footer --- */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr 1fr;
    align-items: start;
  }
}

.footer-brand .nav-logo {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.footer-links h4 {
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-links a:hover {
  color: var(--green);
}

.footer-contact h4 {
  margin-bottom: 1rem;
}

.footer-contact a {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-contact a:hover {
  color: var(--green);
}

.footer-bottom {
  max-width: var(--max-w);
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-bottom p {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* --- Form Styles --- */
.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

input,
select,
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-family: var(--sans);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-muted);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

button[type="submit"],
input[type="submit"] {
  background: var(--green);
  color: #0a0a0a;
  padding: 0.8rem 2rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
}

button[type="submit"]:hover,
input[type="submit"]:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding: 7rem 2rem 3rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.page-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.page-hero h1 {
  margin-bottom: 1rem;
}

.page-hero .lead {
  max-width: 640px;
}

/* --- List styles (for service pages) --- */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '▸';
  color: var(--green);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* --- Table styles --- */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
}

.table-wrapper table {
  margin: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

th {
  text-align: left;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.75rem 1rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

tr:last-child td {
  border-bottom: none;
}

/* --- Responsive utilities --- */
@media (max-width: 767px) {
  .hide-mobile { display: none; }
  .section { padding: 3.5rem 1.5rem; }
  .hero { padding: 7rem 1.5rem 3.5rem; }
  .cta-section { padding: 3.5rem 1.5rem; }
}

@media (min-width: 1024px) {
  .section { padding: 6rem 2rem; }
}

/* --- Blog --- */

/* Blog index card layout */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 720px;
  margin: 0 auto;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
  text-decoration: none;
  display: block;
  color: inherit;
}
.blog-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
  color: inherit;
}

.blog-card h3 {
  color: var(--text);
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.blog-card-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.blog-card-meta span + span::before {
  content: '\00b7';
  margin: 0 0.5rem;
}

.blog-card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.blog-tag {
  background: var(--green-muted);
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.blog-card-excerpt {
  color: var(--text-muted);
  margin: 0.75rem 0 0;
  font-size: 0.95rem;
}

.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  color: var(--green);
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap var(--transition);
}
.blog-read-more:hover {
  gap: 0.65rem;
  color: var(--green-dark);
}

/* Blog post article typography */
.blog-post {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}

.blog-post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.blog-post-header h1 {
  margin-bottom: 0.75rem;
}

.blog-post-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.blog-post-meta span + span::before {
  content: '\00b7';
  margin: 0 0.5rem;
}

.blog-post h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.blog-post h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.blog-post h4 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.blog-post p {
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.blog-post ul,
.blog-post ol {
  margin: 1.25rem 0;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.blog-post li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

/* Code blocks */
.blog-post pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.blog-post pre code {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--text);
  background: none;
  padding: 0;
  border: none;
  border-radius: 0;
}

/* Inline code */
.blog-post code {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.15em 0.4em;
  font-family: var(--mono);
  font-size: 0.875em;
}

/* Blockquotes */
.blog-post blockquote {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 0 6px 6px 0;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
}

.blog-post blockquote p {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Blog post back link */
.blog-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  transition: color var(--transition);
}
.blog-back:hover {
  color: var(--green);
}

/* Responsive adjustments for blog */
@media (max-width: 767px) {
  .blog-post {
    padding: 2rem 1.5rem 3.5rem;
  }
  .blog-post pre {
    padding: 1rem;
    font-size: 0.8rem;
  }
}

/* ============================================
   VIRTUS CYBER ACADEMY — Palette B additions
   Parent green stays primary; Academy amber marks
   academy-distinct surfaces (logo subhead, CTA,
   page-hero eyebrow). Per excursions/visual-
   presentation-research.md §2.2.
   ============================================ */

:root {
  --academy-amber: #fbbf24;
  --academy-amber-dark: #f59e0b;
  --academy-amber-muted: rgba(251, 191, 36, 0.12);
}

/* Compound Academy logo: VIRTUS in green, CYBER ACADEMY in amber */
.nav-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  white-space: nowrap;
  color: var(--green);
}
.nav-logo .nav-logo-virtus {
  color: var(--green);
  font-weight: 700;
  letter-spacing: 0.05em;
}
.nav-logo .nav-logo-academy {
  color: var(--academy-amber);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
}
.nav-logo:hover .nav-logo-virtus { color: var(--green-dark); }
.nav-logo:hover .nav-logo-academy { color: var(--academy-amber-dark); }

/* Parent-site back-link in nav */
.nav-links .nav-parent {
  color: var(--text-dim);
  font-size: 0.82rem;
  border-left: 1px solid var(--border);
  padding-left: 1rem;
  margin-left: 0.25rem;
}
.nav-links .nav-parent:hover {
  color: var(--green);
}

/* Academy CTA: amber, not green — distinct from parent's "Request a Quote" */
.nav-links .nav-cta {
  background: var(--academy-amber);
  color: #0a0a0a;
}
.nav-links .nav-cta:hover {
  background: var(--academy-amber-dark);
  color: #0a0a0a;
}

/* Page-hero eyebrow ("Education") in amber on Academy pages */
.page-hero h4 {
  color: var(--academy-amber);
}

/* Mobile: stack the compound logo so it stays legible at narrow widths */
@media (max-width: 480px) {
  .nav-logo {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    line-height: 1.1;
  }
  .nav-logo .nav-logo-academy {
    font-size: 0.62rem;
    letter-spacing: 0.16em;
  }
}

/* Mobile nav: drop the parent back-link's left-border separator */
@media (max-width: 767px) {
  .nav-links .nav-parent {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
  }
}

/* === Worker B: Geist webfont self-host ===
   Source: https://github.com/vercel/geist-font release 1.8.0
   License: SIL Open Font License 1.1 (see fonts/OFL.txt)
   Files: variable woff2 (single file covers wght 100-900) for both
   Geist Sans and Geist Mono, plus paired italic axes. font-display: swap
   keeps slow connections on the system fallback until Geist arrives;
   no FOIT. Self-hosted to satisfy CSP `font-src 'self'` — no third-party
   CDN load (per excursions/visual-presentation-research.md §3.1).
   ============================================ */
@font-face {
  font-family: 'Geist';
  src: url('fonts/geist-variable.woff2') format('woff2-variations'),
       url('fonts/geist-variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Geist';
  src: url('fonts/geist-italic-variable.woff2') format('woff2-variations'),
       url('fonts/geist-italic-variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Geist Mono';
  src: url('fonts/geist-mono-variable.woff2') format('woff2-variations'),
       url('fonts/geist-mono-variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Geist Mono';
  src: url('fonts/geist-mono-italic-variable.woff2') format('woff2-variations'),
       url('fonts/geist-mono-italic-variable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* Apply --mono to code surfaces site-wide (covers any future pages
   without the .blog-post wrapper). Specific .blog-post code/pre rules
   above already use var(--mono). */
code, pre, kbd, samp {
  font-family: var(--mono);
}
/* === /Worker B === */

/* === Worker C: Palette B sweep + footer + belt ladder ===
   Amber stays a precious-resource accent — Academy-distinct surfaces only.
   Parent green remains the default for chrome, links, primary CTAs. Per
   excursions/visual-presentation-research.md §2.2.
   ============================================ */

/* --- Palette B sweep: section-header underline modifier ---
   Default green underline is preserved on all parent-shared sections.
   .section-header--academy promotes amber for Academy-distinct sections
   (Pipeline, Flagship, Foundation Stream, Cyber+RE Core, Advanced+Specialty,
   The Virtus Academy Approach). */
.section-header--academy h2::after {
  background: var(--academy-amber);
}

/* --- Palette B sweep: stream-label modifier ---
   Default .stream-label stays green for parent-shared tracks
   (Network / Pentest / Wireless). .stream-label--academy promotes amber
   for Academy-distinct tracks (Foundations / RE / Hardware / Capstone). */
.stream-label--academy {
  color: var(--academy-amber);
}

/* --- Palette B sweep: footer attribution links ---
   "Part of Virtus Cybersecurity →" back-link styled as a quiet parent
   reference rather than an active CTA. */
.footer .nav-parent {
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer .nav-parent:hover {
  color: var(--academy-amber);
}

/* Footer-brand uses the compound nav-logo from Pass 1 — re-establish
   inline-flex layout (older rule above set inline-block on the same
   selector with parent-only logo markup). */
.footer-brand .nav-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

/* Footer-bottom: keep the back-link aligned right on desktop. */
.footer-bottom p:last-child {
  margin-left: auto;
}

/* Footer-back-parent paragraph spacing */
.footer-brand .footer-back-parent {
  margin-top: 0.75rem;
  margin-bottom: 0;
}

/* --- 5-dot belt ladder: progression visualization ---
   Echoes pwn.college's belt-ladder mental model without copying. Five dots
   is Virtus's number. First N filled with academy amber; remaining N are
   outline-only against text-dim. Screen-reader semantics live in the
   role="img" + aria-label on the wrapper.
   Per visual-presentation-research.md §6. */
.belt-ladder {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  vertical-align: middle;
}

.belt-ladder-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.belt-ladder-dot--filled {
  background: var(--academy-amber);
  border: 1px solid var(--academy-amber);
}

.belt-ladder-dot--empty {
  background: transparent;
  border: 1px solid var(--text-dim);
}

.belt-ladder-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

/* Belt ladder placement on course cards: nudge below the meta row,
   above the description copy. */
.belt-ladder--card {
  margin-top: 0.5rem;
  margin-bottom: 0.25rem;
}

/* Belt ladder placement on course-page hero: align with the meta row. */
.belt-ladder--hero {
  margin-top: 0.75rem;
}

/* === /Worker C === */

/* === Round 3 Task 1: belt-ladder SVG upgrade ===
   Inline-SVG implementation of the 5-dot belt ladder. Replaces the
   HTML/CSS dot-glyph spans (the .belt-ladder-dot rules above remain as
   harmless fallbacks for any markup the migrator missed). Crisper at
   high-DPI; tighter pixel control; smaller markup. Per
   excursions/visual-presentation-research.md §5 — echoes pwn.college's
   belt mental model without copying it.
   ============================================ */
.belt-ladder-svg {
  display: inline-block;
  vertical-align: middle;
  width: 74px;
  height: 10px;
  flex: 0 0 auto;
}

.belt-ladder-svg .belt-svg-dot--filled {
  fill: var(--academy-amber);
  stroke: var(--academy-amber);
  stroke-width: 1;
}

.belt-ladder-svg .belt-svg-dot--empty {
  fill: none;
  stroke: var(--text-dim);
  stroke-width: 1;
}
/* === /Round 3 Task 1 === */

/* === Round 14: 4-Mode Catalog (Tier / Track / Flat / Search) ===
   Public-tier course catalog with view-switcher tabs + Pagefind search.
   Cards are rendered client-side from /data/course-catalog.json by main.js;
   Pagefind UI is lazy-loaded only when the Search tab is first opened.
   Per OPEN-QUESTIONS §2 (resolved 2026-04-27).
   ============================================ */

/* --- Tab switcher --- */
.catalog-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.25rem;
}

.catalog-tab {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px 6px 0 0;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.55rem 1.25rem;
  text-transform: uppercase;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.catalog-tab:hover {
  color: var(--text);
  background: var(--bg-card);
  border-color: var(--academy-amber-muted);
}

.catalog-tab.is-active {
  color: var(--academy-amber);
  background: var(--academy-amber-muted);
  border-color: var(--academy-amber);
  border-bottom-color: transparent;
}

.catalog-tab:focus-visible {
  outline: 2px solid var(--academy-amber);
  outline-offset: 2px;
}

/* --- View panels --- */
.catalog-view {
  display: block;
}

.catalog-view[hidden] {
  display: none;
}

.catalog-loading {
  text-align: center;
  padding: 2rem 0;
}

/* --- Group headings (Tier 1 / Foundations / etc.) --- */
.catalog-group {
  margin-bottom: 3rem;
}
.catalog-group:last-child {
  margin-bottom: 0;
}

.catalog-group-heading {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.catalog-group-heading::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1em;
  background: var(--academy-amber);
  margin-right: 0.6rem;
  vertical-align: -0.1em;
}

.catalog-group-count {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
}

/* --- Card grid: 1col mobile, 2col ≥768px --- */
.catalog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Card --- */
.catalog-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
}

.catalog-card:hover {
  color: inherit;
}

.catalog-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.catalog-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.catalog-card-code {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.catalog-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.catalog-card-title {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
}

.catalog-card-sub {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-style: italic;
  margin-bottom: 0.25rem;
}

.catalog-card-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  margin: 0 0 0.5rem;
}

.catalog-card-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.catalog-card-facts strong {
  color: var(--text);
}

.catalog-card-equip {
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border);
  padding-top: 0.6rem;
  margin-top: 0.4rem;
}

.catalog-card-equip strong {
  color: var(--academy-amber);
  font-weight: 600;
}

.catalog-card-link {
  margin-top: 0.5rem;
  color: var(--green);
  font-size: 0.88rem;
  font-weight: 600;
  align-self: flex-start;
  transition: color var(--transition);
}

.catalog-card:hover .catalog-card-link {
  color: var(--green-dark);
}

/* --- Future-course visual differentiation: subtle amber-on-bg-card chip --- */
.cert-badge--future {
  background: transparent;
  color: var(--text-dim);
  border-color: var(--text-dim);
  font-style: italic;
}

/* --- Pagefind UI overrides: amber-accent the search bar to fit Palette B.
       Pagefind ships with --pagefind-ui-* CSS variables we can safely override.
       Defaults: highlight=#5d3aa1 (purple), primary=#393939, font=ui-sans-serif. */
.catalog-view--search {
  margin-top: 1rem;
}

#pagefind-search {
  --pagefind-ui-scale: 0.92;
  --pagefind-ui-primary: var(--academy-amber);
  --pagefind-ui-text: var(--text);
  --pagefind-ui-background: var(--bg-card);
  --pagefind-ui-border: var(--border);
  --pagefind-ui-tag: var(--academy-amber-muted);
  --pagefind-ui-border-width: 1px;
  --pagefind-ui-border-radius: 6px;
  --pagefind-ui-image-border-radius: 4px;
  --pagefind-ui-image-box-ratio: 3 / 2;
  --pagefind-ui-font: var(--sans);
}

#pagefind-search .pagefind-ui__search-input,
#pagefind-search .pagefind-ui__search-clear {
  background: var(--bg);
  color: var(--text);
}

#pagefind-search .pagefind-ui__search-input:focus {
  outline: 2px solid var(--academy-amber);
  outline-offset: 2px;
}

#pagefind-search .pagefind-ui__result-link {
  color: var(--green);
}

#pagefind-search .pagefind-ui__result-link:hover {
  color: var(--green-dark);
}

#pagefind-search mark {
  background: var(--academy-amber-muted);
  color: var(--academy-amber);
  padding: 0.05em 0.2em;
  border-radius: 2px;
}

/* --- Mobile responsiveness: tab labels stay readable, single-column grid --- */
@media (max-width: 480px) {
  .catalog-tab {
    padding: 0.5rem 0.85rem;
    font-size: 0.78rem;
    letter-spacing: 0.03em;
  }
  .catalog-card {
    padding: 1.25rem;
  }
  .catalog-card-title {
    font-size: 1.02rem;
  }
}

/* === /Round 14 === */

/* === Round 17: Hardware Platform banner + status pill component ===
   Banner sits above the 4-mode catalog tabs on / pointing at the
   /vca-hardware-platform reference page. Status-pill component is also
   used inline on the HW Platform page itself (defined there), but mirrored
   here for any future use elsewhere in the catalog UI.
   ============================================ */

.hw-platform-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--academy-amber);
  border-left: 4px solid var(--academy-amber);
  border-radius: 6px;
  padding: 1.1rem 1.5rem;
  margin: 0 0 2rem;
  text-decoration: none;
  color: inherit;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.hw-platform-banner:hover {
  background: var(--academy-amber-muted);
  color: inherit;
  transform: translateY(-1px);
}

.hw-platform-banner-text strong {
  color: var(--academy-amber);
  display: block;
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.hw-platform-banner-text p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0;
  line-height: 1.55;
}

.hw-platform-banner-cta {
  color: var(--academy-amber);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .hw-platform-banner {
    padding: 1rem 1.1rem;
    flex-direction: column;
    align-items: flex-start;
  }
  .hw-platform-banner-cta {
    margin-top: 0.4rem;
  }
}

/* === /Round 17 === */

/* === Round 19: Status-pill + status-grid lifted from HW Platform inline
   styles into the canonical stylesheet so the new Excursions section on
   index.html can reuse them. The HW Platform page's inline <style> block
   keeps a copy (harmless duplication; first-cascade wins).
   ============================================ */

.status-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  border: 1px solid currentColor;
  vertical-align: middle;
  white-space: nowrap;
}
.status-pill--shipped {
  color: var(--academy-amber);
  background: var(--academy-amber-muted);
  border-color: var(--academy-amber);
}
.status-pill--shipped::before { content: '\2713\00a0'; }
.status-pill--validated {
  color: var(--green);
  background: var(--green-muted);
  border-color: var(--green);
}
.status-pill--in-build {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.10);
  border-color: #60a5fa;
}
.status-pill--researched {
  color: var(--text-dim);
  background: transparent;
  border-color: var(--text-dim);
}

.status-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 1.5rem 0;
}
@media (min-width: 768px) {
  .status-grid { grid-template-columns: repeat(2, 1fr); }
}
.status-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
}
.status-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.status-card-name { font-weight: 700; color: var(--text); font-size: 0.98rem; }
.status-card-line { font-size: 0.85rem; color: var(--text-muted); margin: 0.25rem 0 0; }
.status-card-est { font-family: var(--mono); font-size: 0.78rem; color: var(--text-dim); display: inline-block; margin-top: 0.4rem; }

/* === /Round 19 === */