/* Digital Employee — public education site */
:root {
  --bg: #0c0f14;
  --bg-elevated: #141922;
  --surface: #1a2130;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8eaef;
  --text-muted: #8b95a8;
  --accent: #3d9cf0;
  --accent-soft: rgba(61, 156, 240, 0.15);
  --warm: #e8a54b;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;
  --radius: 12px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 0;
  gap: 1rem;
}

.logo {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.875rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-cta {
  background: var(--accent);
  color: #0c0f14 !important;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta:hover {
  filter: brightness(1.08);
  color: #0c0f14 !important;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    gap: 0.5rem;
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 0.75rem 1rem;
    border-radius: 8px;
  }

  .nav-links a:hover {
    background: var(--surface);
  }
}

/* Hero */
.hero {
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(4rem, 10vw, 6rem);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 70%;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, var(--accent-soft), transparent);
  pointer-events: none;
}

.hero .container {
  position: relative;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm);
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  max-width: 18ch;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 42rem;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #0c0f14;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface);
}

/* Sections */
section {
  padding: clamp(3.5rem, 7vw, 5rem) 0;
}

.section-alt {
  background: var(--bg-elevated);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 400;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.section-intro {
  color: var(--text-muted);
  max-width: 40rem;
  margin: 0 0 2.5rem;
}

/* Cards grid */
.grid-2 {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.35rem;
}

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.card-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

/* Definition block */
.definition {
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-size: 1.125rem;
  color: var(--text-muted);
}

.definition strong {
  color: var(--text);
}

/* Steps */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.5rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--accent);
  color: #0c0f14;
  font-weight: 700;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.steps h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.steps p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Pillars table (simplified for web) */
.pillars {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.pillar-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  align-items: start;
}

@media (max-width: 640px) {
  .pillar-row {
    grid-template-columns: 1fr;
  }
}

.pillar-row strong {
  color: var(--accent);
  font-size: 0.9rem;
}

.pillar-row span {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat {
  text-align: center;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat .num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--warm);
  line-height: 1.2;
}

.stat .label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.stat .source {
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.75;
  margin-top: 0.5rem;
}

/* CTA band */
.cta-band {
  text-align: center;
  padding: clamp(3rem, 6vw, 4rem);
  background: linear-gradient(145deg, var(--surface) 0%, var(--bg-elevated) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 2rem 0 0;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  margin: 0 0 0.75rem;
}

.cta-band p {
  color: var(--text-muted);
  max-width: 36rem;
  margin: 0 auto 1.5rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 2rem;
}

.site-footer .inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.site-footer a {
  color: var(--text-muted);
}

/* Research note */
.research-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.research-note a {
  font-weight: 500;
}