/* ════════════════════════════════════════════════════════════
   CyberSec Hugo Theme  ·  main.css
   IBM Plex Mono + Sans · Dark grid · Cyan/Purple/Green accents
════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,600;1,400&family=IBM+Plex+Sans:wght@300;400;600;700&display=swap');

/* ── Design Tokens ─────────────────────────────────────── */
:root {
  --bg:        #080c14;
  --surface:   #0d1424;
  --card:      #101828;
  --card-alt:  #0c1520;
  --border:    #1c2e4a;
  --border-hi: #2a4264;

  --cyan:    #00e5ff;
  --purple:  #9b72ff;
  --green:   #00e5a0;
  --amber:   #ffb340;
  --red:     #ff4d6a;

  --cyan-bg:   rgba(0,229,255,.08);
  --purple-bg: rgba(155,114,255,.10);
  --green-bg:  rgba(0,229,160,.08);
  --amber-bg:  rgba(255,179,64,.08);
  --red-bg:    rgba(255,77,106,.07);

  --text:  #c8d8f0;
  --dim:   #6a88a8;
  --muted: #344860;

  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;

  --r:   8px;
  --r-s: 5px;
  --r-l: 12px;

  /* Per-site accent — override in hugo.toml params.accent */
  --accent: var(--cyan);
  --accent-bg: var(--cyan-bg);
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { font-size: 16px; scroll-behavior: smooth; }
body  {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Dot-grid overlay */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,229,255,.017) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,.017) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* ── Layout ─────────────────────────────────────────────── */
.site-wrap { position: relative; z-index: 1; display: flex; flex-direction: column; min-height: 100vh; }
.container { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Header / Nav ───────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 200;
  background: rgba(8,12,20,.93);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; height: 56px; gap: 1.5rem;
  max-width: 1040px; margin: 0 auto; padding: 0 1.5rem;
}

/* Brand */
.site-brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; flex-shrink: 0; }
.brand-shield {
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--accent-bg);
  border: 1px solid rgba(0,229,255,.25);
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem; flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-family: var(--mono); font-size: .88rem; font-weight: 600;
  color: var(--accent); letter-spacing: .02em;
}
.brand-sub { font-family: var(--mono); font-size: .6rem; color: var(--muted); letter-spacing: .06em; }

/* Nav links */
.site-nav { display: flex; align-items: center; gap: .15rem; flex: 1; }
.site-nav a {
  font-family: var(--mono); font-size: .76rem; color: var(--dim);
  text-decoration: none; padding: .32rem .7rem;
  border-radius: var(--r-s); border: 1px solid transparent;
  transition: all .18s; letter-spacing: .02em; white-space: nowrap;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--accent); border-color: rgba(0,229,255,.22); background: var(--accent-bg);
}

/* External link icon */
.site-nav a[target="_blank"]::after { content: ' ↗'; font-size: .65rem; opacity: .6; }

/* Hamburger */
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: var(--r-s); color: var(--dim); padding: .35rem .5rem;
  cursor: pointer; font-size: .95rem; margin-left: auto;
}

/* ── Hero Banner ────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(160deg, #0a1428 0%, #080c14 55%);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0 2.5rem;
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 65% 40%, rgba(0,229,255,.07) 0%, transparent 60%);
}
.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  display: flex; align-items: center; gap: .5rem;
  font-family: var(--mono); font-size: .68rem; color: var(--accent);
  letter-spacing: .16em; text-transform: uppercase; margin-bottom: .75rem;
}
.hero-eyebrow::before { content: ''; width: 20px; height: 2px; background: var(--accent); border-radius: 1px; }

.page-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 700; line-height: 1.2; letter-spacing: -.02em;
  color: var(--text); margin-bottom: .8rem;
}
.page-hero h1 .accent { color: var(--accent); }
.page-hero .lead { font-size: .95rem; color: var(--dim); max-width: 600px; line-height: 1.7; }

/* Hero badges row */
.hero-badges { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1.2rem; }

/* ── Page body ──────────────────────────────────────────── */
.page-body { padding: 2.5rem 0 3.5rem; }

/* ── Prose (rendered markdown) ──────────────────────────── */
.prose { font-size: .95rem; line-height: 1.78; color: var(--text); }

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-weight: 600; line-height: 1.3; color: var(--text); margin: 2rem 0 .7rem;
}
.prose h1 { font-size: 1.8rem; }
.prose h2 {
  font-size: 1.25rem; padding-bottom: .45rem;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: .5rem;
}
.prose h2::before { content: '//'; font-family: var(--mono); font-size: .75rem; color: var(--muted); }
.prose h3 { font-size: 1rem; color: var(--accent); font-family: var(--mono); }
.prose h4 { font-size: .9rem; color: var(--dim); font-family: var(--mono); }

.prose p  { margin-bottom: 1.1rem; }
.prose a  { color: var(--accent); text-decoration: underline; text-decoration-color: rgba(0,229,255,.35); }
.prose a:hover { text-decoration-color: var(--accent); }
.prose strong { color: var(--text); font-weight: 600; }

/* Inline code */
.prose code {
  font-family: var(--mono); font-size: .82em;
  background: var(--card-alt); border: 1px solid var(--border);
  border-radius: var(--r-s); padding: .12em .38em; color: var(--cyan);
}

/* Code blocks */
.prose pre, .highlight {
  background: var(--surface) !important;
  border: 1px solid var(--border); border-radius: var(--r-l);
  padding: 1.2rem 1.35rem; overflow-x: auto; margin: 1.25rem 0;
  position: relative;
}
.prose pre code, .highlight code {
  background: none; border: none; padding: 0;
  font-size: .83rem; color: var(--text); line-height: 1.65;
}

/* Blockquote */
.prose blockquote {
  border-left: 3px solid var(--accent); background: var(--accent-bg);
  border-radius: 0 var(--r) var(--r) 0;
  padding: .8rem 1.2rem; margin: 1.25rem 0; color: var(--dim); font-style: italic;
}

/* Lists */
.prose ul, .prose ol { padding-left: 1.4rem; margin-bottom: 1rem; }
.prose li { margin-bottom: .35rem; }
.prose li::marker { color: var(--accent); }
.prose li a { color: var(--accent); }

/* HR */
.prose hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* Tables */
.prose table {
  width: 100%; border-collapse: collapse;
  font-size: .84rem; margin: 1.25rem 0;
  border: 1px solid var(--border); border-radius: var(--r-l); overflow: hidden;
  display: block; overflow-x: auto;
}
.prose thead { background: var(--surface); }
.prose th {
  font-family: var(--mono); font-size: .7rem; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
  padding: .65rem 1rem; text-align: left; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.prose td { padding: .6rem 1rem; color: var(--dim); border-bottom: 1px solid rgba(255,255,255,.04); }
.prose tr:last-child td { border-bottom: none; }
.prose tbody tr:hover { background: rgba(255,255,255,.02); }

/* Images */
.prose img { max-width: 100%; border-radius: var(--r-l); border: 1px solid var(--border); margin: .5rem 0; }

/* ── Slide list (course pages) ───────────────────────────── */
.slide-list { list-style: none; padding: 0; margin: .75rem 0 1.5rem; }
.slide-list li {
  display: flex; align-items: center; gap: .75rem;
  padding: .55rem .85rem; border-radius: var(--r);
  border: 1px solid var(--border); background: var(--card);
  margin-bottom: .4rem;
  transition: border-color .18s, background .18s;
}
.slide-list li:hover { border-color: rgba(0,229,255,.3); background: var(--card-alt); }

.slide-num {
  font-family: var(--mono); font-size: .68rem; font-weight: 600;
  color: var(--accent); min-width: 2.2rem; flex-shrink: 0;
}
.slide-title { font-size: .87rem; color: var(--text); flex: 1; }
.slide-coming {
  font-family: var(--mono); font-size: .65rem; color: var(--muted);
  border: 1px solid var(--border); border-radius: 4px; padding: .1rem .4rem;
}
.slide-list li a { text-decoration: none; display: flex; align-items: center; gap: .75rem; width: 100%; color: inherit; }
.slide-list li a .slide-title { color: var(--text); }
.slide-list li a:hover .slide-title { color: var(--accent); }
.slide-pdf-badge {
  font-family: var(--mono); font-size: .6rem; color: var(--amber);
  background: var(--amber-bg); border: 1px solid rgba(255,179,64,.2);
  border-radius: 4px; padding: .1rem .4rem; flex-shrink: 0;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r-l); padding: 1.3rem;
  transition: border-color .2s, box-shadow .2s;
}
.card:hover { border-color: var(--border-hi); box-shadow: 0 0 18px rgba(0,229,255,.04); }
.card h3 { font-size: .95rem; font-weight: 600; color: var(--text); margin-bottom: .4rem; }
.card p  { font-size: .83rem; color: var(--dim); line-height: 1.6; }

.card-accent-cyan   { border-left: 3px solid var(--cyan); }
.card-accent-purple { border-left: 3px solid var(--purple); }
.card-accent-green  { border-left: 3px solid var(--green); }
.card-accent-amber  { border-left: 3px solid var(--amber); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; margin: 1rem 0; }

/* ── Team card ────────────────────────────────────────────── */
.team-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r-l);
  padding: 1.5rem; display: flex; align-items: flex-start; gap: 1.25rem;
  max-width: 460px; margin: 1rem 0;
}
.team-photo {
  width: 187; height: 250px; border-radius: var(--r-l);
  border: 2px solid var(--border); object-fit: cover; flex-shrink: 0;
}
.team-name { font-weight: 600; font-size: 1rem; color: var(--text); margin-bottom: .2rem; }
.team-role { font-family: var(--mono); font-size: .72rem; color: var(--accent); letter-spacing: .04em; margin-bottom: .5rem; }
.team-links { display: flex; flex-wrap: wrap; gap: .4rem; }

/* ── Badges & Tags ───────────────────────────────────────── */
.badge {
  display: inline-block; font-family: var(--mono); font-size: .68rem; font-weight: 600;
  padding: .18rem .52rem; border-radius: var(--r-s); letter-spacing: .04em; white-space: nowrap;
}
.badge-cyan   { background: var(--cyan-bg);   color: var(--cyan);   border: 1px solid rgba(0,229,255,.2); }
.badge-purple { background: var(--purple-bg); color: var(--purple); border: 1px solid rgba(155,114,255,.2); }
.badge-green  { background: var(--green-bg);  color: var(--green);  border: 1px solid rgba(0,229,160,.2); }
.badge-amber  { background: var(--amber-bg);  color: var(--amber);  border: 1px solid rgba(255,179,64,.2); }
.badge-red    { background: var(--red-bg);    color: var(--red);    border: 1px solid rgba(255,77,106,.2); }
.badge-muted  { background: rgba(255,255,255,.05); color: var(--dim); border: 1px solid var(--border); }

/* ── Button ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--mono); font-size: .75rem; font-weight: 600;
  padding: .42rem .95rem; border-radius: var(--r-s); border: 1px solid;
  text-decoration: none; cursor: pointer; transition: all .18s; letter-spacing: .03em;
}
.btn-primary { background: var(--cyan-bg); border-color: rgba(0,229,255,.35); color: var(--cyan); }
.btn-primary:hover { background: rgba(0,229,255,.15); border-color: var(--cyan); }
.btn-ghost   { background: transparent; border-color: var(--border); color: var(--dim); }
.btn-ghost:hover { border-color: var(--border-hi); color: var(--text); }

/* ── Callout shortcode ────────────────────────────────────── */
.callout {
  border-radius: var(--r-l); padding: .9rem 1.1rem; margin: 1.25rem 0;
  border: 1px solid; display: flex; gap: .75rem; align-items: flex-start;
}
.callout-icon { font-size: 1rem; flex-shrink: 0; margin-top: .1rem; }
.callout-body { flex: 1; font-size: .84rem; line-height: 1.6; }
.callout-body strong { display: block; margin-bottom: .2rem; }
.callout-body p { margin: 0; color: var(--dim); }

.callout-info    { background: var(--cyan-bg);   border-color: rgba(0,229,255,.22);   color: var(--cyan); }
.callout-warning { background: var(--amber-bg);  border-color: rgba(255,179,64,.22);  color: var(--amber); }
.callout-danger  { background: var(--red-bg);    border-color: rgba(255,77,106,.18);  color: var(--red); }
.callout-success { background: var(--green-bg);  border-color: rgba(0,229,160,.18);   color: var(--green); }

/* ── Section divider ─────────────────────────────────────── */
.section-label {
  font-family: var(--mono); font-size: .68rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); display: flex; align-items: center; gap: .5rem;
  margin-bottom: 1.1rem;
}
.section-label::before { content: '//'; color: var(--muted); }

/* ── Syntax highlight tokens (Chroma) ────────────────────── */
.chroma .k, .chroma .kd, .chroma .kn { color: var(--purple); }
.chroma .s, .chroma .s1, .chroma .s2 { color: var(--green); }
.chroma .c, .chroma .c1, .chroma .cm { color: var(--muted); font-style: italic; }
.chroma .na, .chroma .nb             { color: var(--cyan); }
.chroma .nc, .chroma .nf             { color: var(--amber); }
.chroma .mi, .chroma .mf             { color: var(--amber); }
.chroma .o                           { color: var(--dim); }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--surface); border-top: 1px solid var(--border);
  padding: 1.5rem 0; margin-top: auto;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: .75rem;
  font-family: var(--mono); font-size: .7rem; color: var(--muted);
}
.footer-inner a { color: var(--dim); text-decoration: none; }
.footer-inner a:hover { color: var(--text); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 640px) {
  .site-nav { display: none; }
  .site-nav.open {
    display: flex; flex-direction: column; gap: .25rem;
    position: absolute; top: 56px; left: 0; right: 0;
    background: var(--surface); border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem; z-index: 199;
  }
  .nav-toggle { display: flex; }
  .page-hero   { padding: 2rem 0 1.75rem; }
  .team-card   { flex-direction: column; }
  .team-photo  { width: 64px; height: 64px; }
}