/* ═══════════════════════════════════════
   ajs-lab-core-header.css
   Tokens + Reset + Navigation
   Load this first — body and footer CSS depend on these tokens.
═══════════════════════════════════════ */

/* ═══════════════════════════════════════
   TOKENS — from logo palette
═══════════════════════════════════════ */
:root {
  --navy-deep:   #09102a;
  --navy:        #0d1b3e;
  --navy-2:      #152648;
  --cyan:        #32dad6;
  --cyan-dim:    #1a9e9b;
  --blue-glow:   #0691e7;
  --blue-mid:    #4080b8;
  --lime:        #73bf50;
  --lime-dim:    #4e8a30;
  --white-glow:  #f3fafc;

  --ink:         #1a1e2e;
  --ink-soft:    #3d4460;
  --ink-muted:   #7a82a8;
  --page:        #f5f7fc;
  --page-2:      #eceef7;
  --rule:        #d4d9ee;

  /* Pillar accent colors */
  --p-strategy:    #0691e7;
  --p-strategy-bg: #e4f2fc;
  --p-innovation:  #32dad6;
  --p-innovation-bg:#e4f7f7;
  --p-delivery:    #4a6fd4;
  --p-delivery-bg: #eaedfa;
  --p-leadership:  #73bf50;
  --p-leadership-bg:#edf7e6;

  /* Stream badge colors */
  --s-practitioner: #0d1b3e;
  --s-quickbytes:   #0691e7;
  --s-leadership-lens: #4a6fd4;
  --s-leading-ai:   #1a9e9b;
  --s-ips:          #4e8a30;

  --serif:   'Source Serif 4', Georgia, serif;
  --display: 'DM Serif Display', Georgia, serif;
  --mono:    'JetBrains Mono', monospace;
  --shadow-sm: 0 1px 4px rgba(9,16,42,.08);
  --shadow:    0 3px 14px rgba(9,16,42,.10);
  --shadow-lg: 0 8px 36px rgba(9,16,42,.16);
  --radius: 6px;
}

/* ═══════════════════════════════════════
   RESET
═══════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--serif); background: var(--page); color: var(--ink); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ═══════════════════════════════════════
   NAV
═══════════════════════════════════════ */
.site-nav {
  position: sticky; top: 0; z-index: 900;
  background: rgba(9,16,42,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(50,218,214,.12);
  box-shadow: 0 2px 20px rgba(6,145,231,.08);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center;
  padding: 0 2rem; height: 56px;
}
.nav-brand {
  display: flex; align-items: center; gap: .6rem;
  flex-shrink: 0; margin-right: 2rem;
}
.nav-brand img {
  height: 34px; width: auto;
  filter: drop-shadow(0 0 6px rgba(50,218,214,.35));
}
.nav-links {
  display: flex; align-items: center; gap: 0; flex: 1;
}
.nav-links a {
  font-family: var(--mono); font-size: .68rem; color: rgba(255,255,255,.5);
  padding: .4rem .75rem; border-radius: 3px; white-space: nowrap;
  letter-spacing: .02em; transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--cyan); background: rgba(50,218,214,.08); }
.nav-links a.active { color: var(--cyan); }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a::after { content: ' ▾'; font-size: .55rem; opacity: .5; }
.nav-dropdown-menu {
  position: absolute; top: 100%; left: 0;
  background: var(--navy); border: 1px solid rgba(50,218,214,.1);
  border-radius: var(--radius); padding: .4rem 0;
  min-width: 280px; opacity: 0; pointer-events: none;
  transform: translateY(4px); transition: opacity .2s, transform .2s;
  box-shadow: var(--shadow-lg);
}
.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1; pointer-events: auto; transform: translateY(0);
}
.nav-dropdown-menu a {
  display: block; padding: .5rem 1rem; font-size: .7rem;
  color: rgba(255,255,255,.55);
}
.nav-dropdown-menu a:hover { background: rgba(50,218,214,.06); color: #fff; }
.pillar-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  margin-right: .5rem; vertical-align: middle;
}
.pillar-dot.strategy   { background: var(--p-strategy); }
.pillar-dot.innovation { background: var(--p-innovation); }
.pillar-dot.delivery   { background: var(--p-delivery); }
.pillar-dot.leadership { background: var(--p-leadership); }
.stream-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  margin-right: .5rem; vertical-align: middle;
}
.stream-dot.practitioner { background: var(--p-strategy); }
.stream-dot.quickbytes   { background: var(--p-innovation); }
.stream-dot.executive    { background: var(--p-delivery); }
.stream-dot.spotlight    { background: var(--p-leadership); }

/* Article Streams nav link — blue gradient like hero "Build" */
.nav-links a.nav-streams-link,
.nav-links a.nav-streams-link:hover {
  background: linear-gradient(135deg, var(--blue-glow), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.nav-contact {
  margin-left: auto; font-family: var(--mono); font-size: .66rem;
  color: var(--cyan); border: 1px solid rgba(50,218,214,.3);
  padding: .32rem .8rem; border-radius: 3px;
  transition: all .2s; letter-spacing: .04em;
}
.nav-contact:hover { background: rgba(50,218,214,.1); color: #fff; border-color: var(--cyan); }

/* Mobile */
.nav-toggle { display: none; background: none; border: 1px solid rgba(50,218,214,.3); color: var(--cyan); cursor: pointer; padding: .25rem .4rem; border-radius: 3px; font-size: 1rem; }
@media(max-width: 800px) {
  .nav-toggle { display: block; margin-left: auto; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 56px; left: 0; right: 0;
    background: var(--navy); border-bottom: 1px solid rgba(50,218,214,.12);
    padding: .5rem 0; z-index: 800;
    max-height: calc(100vh - 56px); overflow-y: auto;
  }
  .nav-links.open a { padding: .6rem 2rem; border-radius: 0; }
  .nav-dropdown-menu { position: static; opacity: 1; pointer-events: auto; transform: none; border: none; padding-left: 1rem; box-shadow: none; }
  .nav-contact { margin: .5rem 2rem; text-align: center; }
}