@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --charcoal: #121212;
  --charcoal-50:  #f5f5f5;
  --charcoal-300: #ababab;
  --charcoal-400: #808080;
  --charcoal-500: #5e5e5e;
  --charcoal-600: #3d3d3d;
  --charcoal-700: #2a2a2a;
  --charcoal-800: #1e1e1e;
  --charcoal-900: #161616;
  --charcoal-950: #0a0a0a;
  --cobalt:       #0047AB;
  --cobalt-300:   #6193dd;
  --cobalt-800:   #003d94;
  --white:        #ffffff;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
  background: var(--charcoal);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

::selection { background: var(--cobalt); color: #fff; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--charcoal-800); }
::-webkit-scrollbar-thumb { background: var(--charcoal-600); border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: var(--cobalt); }

/* ── Layout ── */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }

/* ── Typography ── */
.label {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--cobalt);
}
.h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; line-height: 1.08; letter-spacing: -0.02em; }
.h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
.h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.3; }
.lead { font-size: 1.125rem; color: var(--charcoal-300); line-height: 1.7; }
.gradient-text { background: linear-gradient(135deg, #fff 0%, var(--charcoal-300) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.cobalt-text { background: linear-gradient(135deg, var(--cobalt-300) 0%, var(--cobalt) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.5rem; border-radius: 0.5rem;
  font-size: 0.875rem; font-weight: 600; text-decoration: none;
  cursor: pointer; border: none; transition: all 0.2s;
  white-space: nowrap;
}
.btn-primary { background: var(--cobalt); color: #fff; }
.btn-primary:hover { background: var(--cobalt-800); box-shadow: 0 8px 24px rgba(0,71,171,0.25); }
.btn-secondary { background: transparent; color: var(--charcoal-300); border: 1px solid var(--charcoal-600); }
.btn-secondary:hover { border-color: var(--cobalt); color: #fff; }
.btn-ghost { background: transparent; color: var(--charcoal-300); }
.btn-ghost:hover { background: var(--charcoal-800); color: #fff; }
.btn-lg { padding: 1rem 2.5rem; font-size: 1rem; }

/* ── Cards ── */
.card {
  background: var(--charcoal-800); border: 1px solid var(--charcoal-700);
  border-radius: 0.75rem; padding: 1.5rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.card:hover { border-color: var(--charcoal-600); box-shadow: 0 20px 40px rgba(0,0,0,0.4); }
.card-cobalt { background: var(--charcoal-800); border: 1px solid rgba(0,71,171,0.3); border-radius: 0.75rem; padding: 1.5rem; transition: border-color 0.3s, box-shadow 0.3s; }
.card-cobalt:hover { border-color: rgba(0,71,171,0.6); box-shadow: 0 20px 40px rgba(0,71,171,0.1); }

/* ── Tag ── */
.tag {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.65rem; border-radius: 9999px; font-size: 0.7rem; font-weight: 700;
  background: rgba(0,71,171,0.1); color: var(--cobalt-300); border: 1px solid rgba(0,71,171,0.2);
}

/* ── Divider ── */
.divider { height: 1px; background: linear-gradient(to right, transparent, var(--charcoal-600), transparent); }

/* ── Nav ── */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: background 0.3s, backdrop-filter 0.3s, border-color 0.3s, box-shadow 0.3s;
}
#site-header.scrolled {
  background: rgba(18,18,18,0.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--charcoal-700); box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.nav-logo-icon { width: 32px; height: 32px; background: var(--cobalt); border-radius: 8px; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
.nav-logo:hover .nav-logo-icon { background: var(--cobalt-800); }
.nav-logo-text { font-size: 0.9rem; font-weight: 600; color: var(--white); }
.nav-logo-text span { color: var(--cobalt); }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-link { color: var(--charcoal-300); font-size: 0.875rem; font-weight: 500; text-decoration: none; transition: color 0.2s; }
.nav-link:hover, .nav-link.active { color: var(--white); }
.nav-link.vault-link { display: flex; align-items: center; gap: 0.35rem; }
.nav-right { display: flex; align-items: center; gap: 0.75rem; }
#mobile-btn { display: none; background: transparent; border: none; cursor: pointer; color: var(--charcoal-300); padding: 0.5rem; }
#mobile-menu { display: none; border-top: 1px solid var(--charcoal-800); padding: 1rem 0; }
#mobile-menu a { display: block; padding: 0.625rem 0; color: var(--charcoal-300); font-size: 0.875rem; font-weight: 500; text-decoration: none; transition: color 0.2s; }
#mobile-menu a:hover { color: var(--white); }

/* ── Grid ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }

/* ── Hero BG ── */
.hero-bg {
  position: absolute; inset: 0;
  background: var(--charcoal-950);
}
.hero-grid {
  position: absolute; inset: 0; opacity: 0.15;
  background-image: linear-gradient(rgba(0,71,171,0.25) 1px, transparent 1px), linear-gradient(90deg, rgba(0,71,171,0.25) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow-1 { position: absolute; top: 25%; left: 25%; width: 400px; height: 400px; background: rgba(0,71,171,0.06); border-radius: 50%; filter: blur(80px); }
.hero-glow-2 { position: absolute; bottom: 25%; right: 25%; width: 320px; height: 320px; background: rgba(0,71,171,0.04); border-radius: 50%; filter: blur(80px); }

/* ── Stat strip ── */
.stat-strip { padding: 3.5rem 0; border-top: 1px solid var(--charcoal-800); border-bottom: 1px solid var(--charcoal-800); background: rgba(22,22,22,0.5); }
.stat-number { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--white); }
.stat-label { font-size: 0.75rem; color: var(--charcoal-400); margin-top: 0.25rem; }

/* ── Form ── */
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--charcoal-300); }
.field label .req { color: var(--cobalt); }
.input {
  width: 100%; background: var(--charcoal-800); border: 1px solid var(--charcoal-600);
  border-radius: 0.5rem; padding: 0.75rem 1rem; color: var(--white); font-family: inherit; font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s; outline: none;
}
.input::placeholder { color: var(--charcoal-500); }
.input:focus { border-color: var(--cobalt); box-shadow: 0 0 0 3px rgba(0,71,171,0.15); }
.input.error { border-color: #ef4444; }
select.input { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235e5e5e' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }
textarea.input { resize: vertical; min-height: 130px; }

/* ── Progress bar (diligence report mockup) ── */
.progress-bar { height: 6px; background: var(--charcoal-700); border-radius: 9999px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 9999px; transition: width 0.6s ease; }

/* ── Footer ── */
footer { background: var(--charcoal-950); border-top: 1px solid var(--charcoal-800); }
footer a { color: var(--charcoal-400); font-size: 0.875rem; text-decoration: none; transition: color 0.2s; }
footer a:hover { color: var(--white); }

/* ── Animations ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes spin { to { transform: rotate(360deg); } }
.animate-fade-up { animation: fadeUp 0.7s ease-out forwards; }
.animate-fade-in { animation: fadeIn 0.6s ease-out forwards; }
.animate-spin { animation: spin 1s linear infinite; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.on-scroll { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.on-scroll.visible { opacity: 1; transform: translateY(0); }

/* ── Vault ── */
#vault-interior { display: none; }

/* ── Scroll hint ── */
.scroll-hint {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.35rem;
  pointer-events: none;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}
.scroll-arrow { animation: scrollBounce 1.6s ease-in-out infinite; }

/* ── Language switcher ── */
.lang-switcher { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 0.35rem;
  background: transparent; border: 1px solid var(--charcoal-700); border-radius: 0.375rem;
  color: var(--charcoal-300); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em;
  padding: 0.35rem 0.65rem; cursor: pointer; transition: border-color 0.2s, color 0.2s;
  font-family: inherit;
}
.lang-btn:hover { border-color: var(--cobalt); color: var(--white); }
.lang-dropdown { position: relative; }
.lang-menu {
  position: absolute; top: calc(100% + 0.5rem); right: 0;
  background: var(--charcoal-800); border: 1px solid var(--charcoal-700); border-radius: 0.5rem;
  min-width: 130px; z-index: 100; overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.lang-option {
  display: flex; align-items: center; gap: 0.5rem; width: 100%;
  padding: 0.625rem 0.875rem; background: transparent; border: none; cursor: pointer;
  color: var(--charcoal-300); font-size: 0.8rem; font-family: inherit; text-align: left;
  transition: background 0.15s, color 0.15s;
}
.lang-option:hover { background: var(--charcoal-700); color: var(--white); }
.lang-option-active { color: var(--cobalt-300) !important; }
.lang-option span { color: var(--charcoal-500); font-size: 0.75rem; }

/* ── Nav dropdown ── */
.nav-item-dropdown { position: relative; }
.nav-dropdown-trigger { display: flex !important; align-items: center; gap: .35rem; }
.nav-dd-arrow { transition: transform .2s; flex-shrink: 0; }
.nav-item-dropdown:hover .nav-dd-arrow,
.nav-item-dropdown.open .nav-dd-arrow { transform: rotate(180deg); }
.nav-dropdown-menu {
  position: absolute; top: calc(100% + .75rem); left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--charcoal-800); border: 1px solid var(--charcoal-700); border-radius: .75rem;
  min-width: 230px; z-index: 200; overflow: hidden; padding: .375rem 0;
  box-shadow: 0 12px 32px rgba(0,0,0,.55);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .15s, visibility .15s, transform .15s;
}
.nav-item-dropdown:hover .nav-dropdown-menu,
.nav-item-dropdown.open .nav-dropdown-menu {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-item {
  display: flex; flex-direction: column; gap: .15rem;
  padding: .625rem 1rem; text-decoration: none; transition: background .15s;
}
.nav-dropdown-item:hover { background: var(--charcoal-700); }
.nav-dropdown-item-label { color: var(--white); font-size: .8rem; font-weight: 600; }
.nav-dropdown-item-desc { color: var(--charcoal-500); font-size: .7rem; }
.nav-dropdown-divider { height: 1px; background: var(--charcoal-700); margin: .25rem 0; }

/* ── Pillar accent tokens ── */
.pillar-velocity     { --pc: var(--cobalt-300);  --pb: rgba(0,71,171,.12);    --pe: rgba(0,71,171,.25); }
.pillar-deliverability { --pc: #fbbf24;           --pb: rgba(245,158,11,.12); --pe: rgba(245,158,11,.25); }
.pillar-governance   { --pc: #34d399;             --pb: rgba(16,185,129,.12); --pe: rgba(16,185,129,.25); }
.pillar-tag {
  display: inline-flex; align-items: center; padding: .2rem .65rem; border-radius: 9999px;
  font-size: .7rem; font-weight: 700;
  background: var(--pb); color: var(--pc); border: 1px solid var(--pe);
}

/* ── Breadcrumbs ── */
.breadcrumb { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin-bottom: 2rem; }
.breadcrumb a { color: var(--charcoal-500); font-size: .75rem; text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--charcoal-300); }
.breadcrumb-sep { color: var(--charcoal-700); font-size: .75rem; }
.breadcrumb-current { color: var(--charcoal-300); font-size: .75rem; }

/* ── Post index cards ── */
.post-card {
  background: var(--charcoal-800); border: 1px solid var(--charcoal-700); border-radius: .75rem;
  padding: 1.5rem; text-decoration: none; display: block;
  transition: border-color .3s, box-shadow .3s;
}
.post-card:hover { border-color: var(--charcoal-600); box-shadow: 0 8px 24px rgba(0,0,0,.3); }
.post-meta { display: flex; align-items: center; gap: .75rem; margin-bottom: .875rem; flex-wrap: wrap; }
.post-date { color: var(--charcoal-500); font-size: .7rem; }
.post-title { color: var(--white); font-size: 1rem; font-weight: 600; line-height: 1.45; margin-bottom: .625rem; }
.post-excerpt { color: var(--charcoal-400); font-size: .82rem; line-height: 1.65; margin-bottom: 1rem; }
.post-read-link { color: var(--cobalt-300); font-size: .78rem; font-weight: 600; }

/* ── Key signals ── */
.signal-card {
  background: var(--charcoal-800); border: 1px solid var(--charcoal-700); border-radius: .75rem;
  padding: 1.25rem 1.5rem; display: flex; gap: 1rem; align-items: flex-start;
  transition: border-color .3s;
}
.signal-icon {
  width: 40px; height: 40px; border-radius: .625rem; display: flex; align-items: center;
  justify-content: center; flex-shrink: 0;
  background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.2);
}

/* ── Intelligence sidebar / inline CTA ── */
.intel-sidebar { position: sticky; top: 88px; }
.intel-cta-block {
  background: linear-gradient(135deg, rgba(0,71,171,.15) 0%, rgba(0,71,171,.05) 100%);
  border: 1px solid rgba(0,71,171,.3); border-radius: 1rem; padding: 1.75rem;
}
.inline-cta {
  background: linear-gradient(135deg, rgba(0,71,171,.12) 0%, rgba(0,71,171,.04) 100%);
  border: 1px solid rgba(0,71,171,.25); border-radius: 1rem; padding: 2rem;
  margin: 2.5rem 0; text-align: center;
}

/* ── Article prose ── */
.prose { color: var(--charcoal-300); font-size: .95rem; line-height: 1.8; }
.prose h2 { color: var(--white); font-size: 1.5rem; font-weight: 700; margin: 2.5rem 0 1rem; letter-spacing: -.015em; }
.prose h3 { color: var(--white); font-size: 1.15rem; font-weight: 600; margin: 2rem 0 .75rem; }
.prose p { margin-bottom: 1.35rem; }
.prose strong { color: var(--white); font-weight: 600; }
.prose ul { padding-left: 0; margin-bottom: 1.35rem; display: flex; flex-direction: column; gap: .5rem; list-style: none; }
.prose ul li { display: flex; gap: .75rem; align-items: flex-start; }
.prose ul li::before { content: ''; display: block; width: 5px; height: 5px; border-radius: 50%; background: var(--cobalt-300); flex-shrink: 0; margin-top: .7rem; }
.prose ol { padding-left: 0; margin-bottom: 1.35rem; counter-reset: ol-counter; display: flex; flex-direction: column; gap: .5rem; list-style: none; }
.prose ol li { display: flex; gap: .75rem; align-items: flex-start; counter-increment: ol-counter; }
.prose ol li::before { content: counter(ol-counter); display: flex; align-items: center; justify-content: center; width: 1.6rem; height: 1.6rem; background: rgba(0,71,171,.15); border: 1px solid rgba(0,71,171,.25); border-radius: 50%; font-size: .65rem; font-weight: 800; color: var(--cobalt-300); flex-shrink: 0; margin-top: .1rem; }
.prose blockquote { border-left: 3px solid var(--cobalt); padding: .5rem 0 .5rem 1.25rem; margin: 1.5rem 0; color: var(--charcoal-300); font-style: italic; }

/* ── Briefing archive cards ── */
.briefing-card {
  background: var(--charcoal-800); border: 1px solid var(--charcoal-700); border-radius: .75rem;
  padding: 1.5rem; transition: border-color .3s;
}
.briefing-card:hover { border-color: var(--charcoal-600); }
.briefing-issue { color: var(--cobalt-300); font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin-bottom: .5rem; }
.briefing-headline { color: var(--white); font-size: .9rem; font-weight: 600; margin-bottom: .5rem; line-height: 1.4; }
.briefing-summary { color: var(--charcoal-400); font-size: .8rem; line-height: 1.6; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .grid-split { grid-template-columns: 1fr; gap: 2.5rem; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  #mobile-btn { display: block; }
  .hide-mobile { display: none; }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .btn-lg { padding: 0.875rem 1.75rem; }
  .stat-strip .grid-4 { grid-template-columns: 1fr 1fr; }
}