/* ---------------------------------------------------------
   Design tokens
--------------------------------------------------------- */
:root {
  color-scheme: light;
  --surface-1:      #fcfcfb;
  --page-plane:     #f9f9f7;
  --surface-raised: #ffffff;
  --text-primary:   #0b0b0b;
  --text-secondary: #52514e;
  --text-muted:     #6b6a65;
  --gridline:       #e1e0d9;
  --baseline:       #c3c2b7;
  --border:         rgba(11,11,11,0.10);
  --success:        #006300;

  --series-blue:    #2a78d6;
  --series-orange:  #eb6834;
  --series-aqua:    #1baf7a;
  --series-yellow:  #eda100;
  --series-magenta: #e87ba4;
  --series-violet:  #4a3aa7;

  --seq-100: #cde2fb;
  --seq-300: #6da7ec;
  --seq-450: #2a78d6;
  --seq-600: #184f95;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --max-width: 1120px;

  --font-sans: system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --surface-1:      #1a1a19;
    --page-plane:     #0d0d0d;
    --surface-raised: #202020;
    --text-primary:   #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted:     #898781;
    --gridline:       #2c2c2a;
    --baseline:       #383835;
    --border:         rgba(255,255,255,0.10);
    --success:        #0ca30c;

    --series-blue:    #3987e5;
    --series-orange:  #d95926;
    --series-aqua:    #199e70;
    --series-yellow:  #c98500;
    --series-magenta: #d55181;
    --series-violet:  #9085e9;

    --seq-100: #184f95;
    --seq-300: #256abf;
    --seq-450: #3987e5;
    --seq-600: #9ec5f4;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-1:      #1a1a19;
  --page-plane:     #0d0d0d;
  --surface-raised: #202020;
  --text-primary:   #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted:     #898781;
  --gridline:       #2c2c2a;
  --baseline:       #383835;
  --border:         rgba(255,255,255,0.10);
  --success:        #0ca30c;

  --series-blue:    #3987e5;
  --series-orange:  #d95926;
  --series-aqua:    #199e70;
  --series-yellow:  #c98500;
  --series-magenta: #d55181;
  --series-violet:  #9085e9;

  --seq-100: #184f95;
  --seq-300: #256abf;
  --seq-450: #3987e5;
  --seq-600: #9ec5f4;
}

/* ---------------------------------------------------------
   Base
--------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--page-plane);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 96px 0; }
#impact { padding-top: 48px; }
@media (max-width: 640px) {
  section { padding: 64px 0; }
  #impact { padding-top: 32px; }
}

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 12px;
}

h1, h2, h3, h4 { font-family: var(--font-sans); font-weight: 650; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: clamp(28px, 4vw, 38px); }
h3 { font-size: 22px; }

p { color: var(--text-secondary); }

.section-head {
  max-width: 640px;
  margin: 0 0 48px;
}
.section-head p { margin-top: 12px; font-size: 17px; }

/* ---------------------------------------------------------
   Nav
--------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--page-plane) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-name {
  font-weight: 700;
  font-size: 17px;
  text-decoration: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 550;
  color: var(--text-primary);
  transition: opacity .15s ease;
}
.nav-links a:hover { opacity: 0.65; }
.nav-cta {
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
  color: var(--text-primary) !important;
}
.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface-raised);
  width: 36px;
  height: 36px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
}
.theme-toggle svg { width: 16px; height: 16px; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}
@media (max-width: 760px) {
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; flex-direction: column; align-items: flex-start;
    background: var(--surface-1); border-bottom: 1px solid var(--border); padding: 20px 24px 28px; gap: 18px;
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: all .18s ease; }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-toggle { display: block; }
}

/* ---------------------------------------------------------
   Hero
--------------------------------------------------------- */
.hero { padding: 88px 0 32px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--series-blue);
  background: color-mix(in srgb, var(--series-blue) 12%, transparent);
  padding: 6px 12px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-greeting {
  font-size: 17px;
  color: var(--text-secondary);
  margin: 0 0 8px;
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1.08;
  max-width: 900px;
}
.hero .lede {
  font-size: 19px;
  max-width: 660px;
  margin: 22px 0 0;
}
.hero-actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--text-primary); color: var(--page-plane); }
.btn-secondary { border-color: var(--border); color: var(--text-primary); }

/* ---------------------------------------------------------
   Stat tiles (impact grid)
--------------------------------------------------------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .stat-grid { grid-template-columns: 1fr; } }

.stat-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
}
.stat-tile .label { font-size: 13.5px; color: var(--text-secondary); margin: 0 0 10px; }
.stat-tile .value { font-size: 32px; font-weight: 650; letter-spacing: -0.01em; }
.stat-tile .delta { font-size: 13.5px; margin-top: 8px; display: flex; align-items: center; gap: 5px; }
.stat-tile .delta.up { color: var(--success); }
.stat-tile .delta svg { width: 12px; height: 12px; }
.stat-tile .context { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

/* ---------------------------------------------------------
   Case studies
--------------------------------------------------------- */
.case {
  border-top: 1px solid var(--border);
}
.case-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.case-head .tag {
  font-size: 13px;
  color: var(--text-muted);
}
.case-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 900px) {
  .case-grid { grid-template-columns: 1fr; gap: 40px; }
}
.case-narrative p { font-size: 16.5px; }
.case-narrative h4 { font-size: 15px; margin: 28px 0 10px; color: var(--text-primary); }
.case-narrative ul { margin: 0; padding-left: 20px; color: var(--text-secondary); }
.case-narrative li { margin-bottom: 10px; font-size: 15.5px; }

.chart-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 24px 18px;
}
.chart-card + .chart-card { margin-top: 16px; }
.chart-title { font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.chart-sub { font-size: 12.5px; color: var(--text-muted); margin-bottom: 14px; }
.chart-legend { display: flex; gap: 16px; margin-top: 10px; flex-wrap: wrap; }
.chart-legend .key { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--text-secondary); }
.chart-legend .swatch { width: 10px; height: 10px; border-radius: 3px; }

.mini-charts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .mini-charts { grid-template-columns: 1fr; } }

.milestone-row { display: flex; justify-content: space-between; margin-top: 10px; }
.milestone { text-align: center; flex: 1; }
.milestone .m-val { font-size: 15px; font-weight: 650; }
.milestone .m-lbl { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ---------------------------------------------------------
   Testimonials & recognition
--------------------------------------------------------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 8px;
}
@media (max-width: 760px) { .testimonial-grid { grid-template-columns: 1fr; } }

.testimonial-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  background: var(--surface-1);
  display: flex;
  flex-direction: column;
}
.testimonial-card .quote {
  font-size: 15.5px;
  color: var(--text-primary);
  margin: 0 0 16px;
  flex: 1;
  line-height: 1.5;
}
.testimonial-card .quote::before { content: "\201C"; }
.testimonial-card .quote::after { content: "\201D"; }
.testimonial-card .attribution { font-size: 13.5px; color: var(--text-secondary); font-weight: 600; }
.testimonial-card .attribution .role { font-weight: 400; color: var(--text-muted); display: block; margin-top: 2px; }
.testimonial-card .source {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.rating-strip {
  display: flex;
  gap: 16px;
  margin: 28px 0 40px;
  flex-wrap: wrap;
}
.rating-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 16px 8px 14px;
  font-size: 13.5px;
  color: var(--text-secondary);
}
.rating-chip .stars { color: var(--series-yellow); font-size: 13px; letter-spacing: 1px; }
.rating-chip strong { font-weight: 650; color: var(--text-primary); }

/* ---------------------------------------------------------
   Additional impact / smaller cards
--------------------------------------------------------- */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .impact-grid { grid-template-columns: 1fr; } }
.impact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  background: var(--surface-1);
}
.impact-card .eyebrow { margin-bottom: 8px; font-size: 12px; }
.impact-card h4 { font-size: 17px; margin-bottom: 8px; }
.impact-card p { font-size: 15px; margin: 0; }

.stack {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}
.stack-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}
.stack-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.stack-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--surface-raised);
  font-size: 12.5px;
  color: var(--text-secondary);
}

/* ---------------------------------------------------------
   Career arc timeline
--------------------------------------------------------- */
.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--gridline);
}
.tl-item { position: relative; padding-bottom: 40px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--series-blue);
  border: 2px solid var(--page-plane);
}
.tl-item .tl-period { font-size: 12.5px; color: var(--text-muted); font-weight: 600; letter-spacing: .02em; text-transform: uppercase; }
.tl-item h4 { font-size: 18px; margin: 6px 0 4px; }
.tl-item .tl-org { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.tl-item p { font-size: 15px; margin: 0; }

/* ---------------------------------------------------------
   Leadership
--------------------------------------------------------- */
.leader-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .leader-grid { grid-template-columns: 1fr; } }
.leader-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.leader-card .num { font-size: 26px; font-weight: 650; }
.leader-card .lbl { font-size: 13.5px; color: var(--text-secondary); margin-top: 6px; }

/* ---------------------------------------------------------
   Footer / contact
--------------------------------------------------------- */
.contact {
  border-top: 1px solid var(--border);
  text-align: center;
}
.contact h2 { max-width: 560px; margin: 0 auto; }
.contact p { max-width: 480px; margin: 16px auto 0; font-size: 17px; }
.contact .hero-actions { justify-content: center; margin-top: 32px; }


/* ---------------------------------------------------------
   Scroll reveal
--------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }