/* =========================================================================
   Kevin Duncan, site stylesheet
   Design tokens per design handoff (Clean Corporate / Playbooks, 2026)
   ========================================================================= */

:root {
  --ink: #0F2942;
  --teal: #1F6F6B;
  --teal-light: #7ED0C9;
  --teal-tint: #E3EFEE;
  --ground: #FBFCFD;
  --surface: #FFFFFF;
  --ground-muted: #F7F9FB;
  --ground-cool: #F2F6F8;
  --ground-hover: #EEF2F5;
  --border: #E4E9EE;
  --border-strong: #CFD9E1;
  --text-body: #4A6076;
  --text-muted: #7B8B9A;
  --ondark-body: #B9C7D4;
  --ondark-muted: #8FA2B4;
  --dark-card: #16344F;

  --content-max: 1180px;
  --content-pad: 36px;
}

/* ---------- Reset / base ---------- */

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: 'Manrope', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; }

p { margin: 0; }

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

a {
  color: var(--teal);
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease, box-shadow 150ms ease;
}

a:hover { color: var(--ink); }

::selection { background: #1F6F6B22; }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
  border-radius: 4px;
}

#about, #expertise, #experience {
  scroll-margin-top: 90px;
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad);
}

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}

.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.section--muted { background: var(--ground-muted); }
.section--no-border { border-bottom: none; }

.section-heading {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.12;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-weight: 600;
  font-size: 15px;
  border-radius: 10px;
  padding: 14px 24px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn--primary {
  background: var(--teal);
  color: var(--ground);
  box-shadow: 0 6px 18px rgba(31, 111, 107, .18);
}
.btn--primary:hover { background: var(--ink); color: var(--ground); }

.btn--secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border-strong);
  font-weight: 500;
  padding: 14px 22px;
}
.btn--secondary:hover { border-color: var(--teal); color: var(--teal); }

.btn--light {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--ground);
  color: var(--ink);
  padding: 13px 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}
.btn--light:hover { background: var(--teal-light); color: var(--ink); }

.btn--block { width: 100%; padding: 14px 20px; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 252, 253, .9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px var(--content-pad);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand__mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--ground);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
}

.brand__name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.brand__title {
  font-size: 12px;
  color: var(--text-muted);
}

.nav {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
}

.nav a:not(.nav-cta) {
  color: var(--text-body);
  padding: 8px 12px;
  border-radius: 8px;
}
.nav a:not(.nav-cta):hover { background: var(--ground-hover); color: var(--ink); }

.nav-cta {
  margin-left: 8px;
  background: var(--ink);
  color: var(--ground);
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 500;
}
.nav-cta:hover { background: var(--teal); color: var(--ground); }

.nav--desktop { display: flex; }
.nav-mobile { display: none; }

@media (max-width: 720px) {
  .nav--desktop { display: none; }

  .nav-mobile {
    display: block;
    position: relative;
  }
  .nav-mobile > summary {
    list-style: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink);
  }
  .nav-mobile > summary::-webkit-details-marker { display: none; }
  .nav-mobile > summary:hover { background: var(--ground-hover); }
  .nav-mobile[open] > summary { background: var(--ground-hover); }
  .nav-mobile .nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px;
    box-shadow: 0 12px 28px rgba(15, 41, 66, .1);
    min-width: 200px;
  }
  .nav-mobile .nav-cta { margin-left: 0; text-align: center; }
}

.hamburger {
  width: 18px;
  height: 12px;
  position: relative;
}
.hamburger span,
.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}
.hamburger::before { top: 0; }
.hamburger span { top: 5px; }
.hamburger::after { top: 10px; }

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(180deg, var(--ground-cool) 0%, var(--ground) 100%);
  border-bottom: 1px solid var(--border);
}

.hero .container {
  padding-top: 96px;
  padding-bottom: 84px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 72px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--teal-tint);
  color: var(--teal);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 28px;
}

.pill__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.hero h1 {
  font-size: clamp(38px, 4.8vw, 64px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.035em;
  margin: 0 0 24px;
  text-wrap: balance;
}

.hero__lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-body);
  max-width: 54ch;
  margin: 0 0 34px;
  text-wrap: pretty;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.hero__note {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: 4px;
}

.hero__media { position: relative; }

.hero__photo {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(15, 41, 66, .14);
  border: 1px solid var(--border);
  background: var(--ground-hover);
  aspect-ratio: 4 / 5;
}

.hero__photo img { width: 100%; height: 100%; object-fit: cover; }

.hero__badge {
  position: absolute;
  bottom: -22px;
  left: -26px;
  width: 104px;
  height: 104px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 12px 30px rgba(15, 41, 66, .12);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.hero__badge img { width: 100%; height: 100%; object-fit: contain; }

/* ---------- Stat band ---------- */

.stat-band { background: var(--surface); border-bottom: 1px solid var(--border); }

.stat-band .container {
  padding: 44px var(--content-pad);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

.stat__number {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--teal);
  line-height: 1;
}

.stat__caption {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-body);
}

/* ---------- About ---------- */

.about .container {
  padding: 80px var(--content-pad);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  gap: 64px;
}

.about__body {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 70ch;
}

.about__body p {
  font-size: 17px;
  line-height: 1.72;
  color: var(--text-body);
}

/* ---------- Expertise ---------- */

.expertise .container { padding: 80px var(--content-pad); }

.expertise .section-heading { margin-bottom: 40px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px;
  box-shadow: 0 1px 2px rgba(15, 41, 66, .04);
}
.card:hover { box-shadow: 0 12px 28px rgba(15, 41, 66, .1); }

.card__rule {
  width: 34px;
  height: 3px;
  background: var(--teal);
  border-radius: 2px;
  margin-bottom: 18px;
}

.card h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 10px;
  letter-spacing: -.01em;
}

.card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-body);
}

/* ---------- Playbook teaser (navy block) ---------- */

.teaser-wrap .container { padding: 80px var(--content-pad); }

.teaser {
  background: var(--ink);
  border-radius: 20px;
  padding: 52px;
  color: var(--ground);
}

.teaser__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 48px;
  margin-bottom: 38px;
  flex-wrap: wrap;
}

.teaser__eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal-light);
  margin-bottom: 14px;
}

.teaser__head h2 {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.14;
  margin: 0 0 16px;
}

.teaser__head p {
  font-size: 17px;
  line-height: 1.62;
  color: var(--ondark-body);
  max-width: 56ch;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.cover-card { display: block; color: var(--ground); }

.cover-card__well {
  aspect-ratio: 1 / 1.414;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(251, 252, 253, .16);
  background: var(--dark-card);
  box-shadow: 0 14px 32px rgba(4, 15, 26, .35);
}
.cover-card__well img { width: 100%; height: 100%; object-fit: cover; }

.cover-card__title {
  margin-top: 14px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.cover-card__meta {
  margin-top: 4px;
  font-size: 13px;
  color: var(--ondark-muted);
}

/* ---------- Career ---------- */

.career .container { padding: 80px var(--content-pad); }

.career .section-heading { margin-bottom: 36px; }

.career-table {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.career-row {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr) 220px;
  gap: 20px;
  padding: 18px 26px;
  align-items: center;
  border-top: 1px solid var(--ground-hover);
}

.career-row:first-child {
  border-top: none;
  background: var(--ground-cool);
  padding: 20px 26px;
}

.career-row__date {
  font-size: 14px;
  color: var(--text-muted);
}
.career-row:first-child .career-row__date {
  font-weight: 600;
  color: var(--teal);
  letter-spacing: .02em;
}

.career-row__title { font-size: 17px; font-weight: 600; }
.career-row__company { font-size: 15px; color: var(--text-body); }
.career-row__location { font-size: 14px; color: var(--text-muted); }

@media (max-width: 900px) {
  .career-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}

/* ---------- Interests ---------- */

.interests .container { padding: 80px var(--content-pad); }
.interests .section-heading { margin-bottom: 36px; }

.interests-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.interest-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  overflow: hidden;
}

.interest-card__media {
  height: 180px;
  background: var(--ground-hover);
}
.interest-card__media img { width: 100%; height: 100%; object-fit: cover; }

.interest-card__body { padding: 24px; }

.interest-card h3 { font-size: 19px; font-weight: 600; margin: 0 0 10px; }

.interest-card p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-body);
}

/* ---------- Contact close ---------- */

.contact-close { background: var(--ground-cool); }

.contact-close .container {
  padding: 84px var(--content-pad);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}

.contact-close h2 {
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1.08;
  margin: 0 0 18px;
}

.contact-close p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-body);
  max-width: 46ch;
}

.contact-tiles { display: grid; gap: 12px; }

.contact-tile {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 500;
}
.contact-tile:hover { border-color: var(--teal); color: var(--teal); }

.contact-tile__label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-tile__arrow { color: var(--text-muted); }

/* ---------- Footer ---------- */

.site-footer { background: var(--ink); color: var(--ondark-muted); }

.site-footer .container {
  padding: 26px var(--content-pad);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 8px;
}

.site-footer a { color: var(--ondark-muted); }
.site-footer a:hover { color: var(--ground); }

/* =========================================================================
   Playbooks page
   ========================================================================= */

.playbooks-hero .container {
  padding: 80px var(--content-pad) 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}

.playbooks-hero h1 {
  font-size: clamp(36px, 4.4vw, 58px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.035em;
  margin: 0 0 22px;
  text-wrap: balance;
}

.playbooks-hero__lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-body);
  max-width: 56ch;
  text-wrap: pretty;
}

.index-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: 0 8px 24px rgba(15, 41, 66, .06);
}

.index-card__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.index-card__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 20px;
  font-size: 14px;
}

.index-card__grid a { color: var(--ink); padding: 4px 0; display: block; }
.index-card__grid a:hover { color: var(--teal); }

.playbook-row .container {
  padding: 72px var(--content-pad);
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.playbook-row--alt { background: var(--ground-muted); }

.playbook-cover {
  aspect-ratio: 1 / 1.414;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--ground-hover);
  box-shadow: 0 18px 44px rgba(15, 41, 66, .12);
}
.playbook-cover img { width: 100%; height: 100%; object-fit: cover; }

.playbook-download {
  margin-top: 18px;
  background: var(--teal);
  color: var(--ground);
  box-shadow: 0 6px 18px rgba(31, 111, 107, .18);
}
.playbook-download:hover { background: var(--ink); }

.playbook-pages {
  margin-top: 12px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.playbook-detail h2 {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.12;
  margin: 0 0 16px;
}

.playbook-standfirst {
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink);
  font-weight: 500;
  margin: 0 0 18px;
  max-width: 60ch;
}

.playbook-body p {
  font-size: 17px;
  line-height: 1.72;
  color: var(--text-body);
  max-width: 70ch;
}
.playbook-body p + p { margin-top: 16px; }
.playbook-body { margin-bottom: 28px; }

.whats-inside {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px 28px;
  max-width: 76ch;
  background: var(--ground-muted);
}
.playbook-row--alt .whats-inside { background: var(--surface); }

.whats-inside h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 14px;
  letter-spacing: -.01em;
}

.whats-inside ul {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
}

.whats-inside__footnote {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-muted);
}

.cta-close {
  background: var(--ink);
  color: var(--ground);
}

.cta-close .container {
  padding: 76px var(--content-pad);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 56px;
  align-items: center;
}

.cta-close h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1.1;
  margin: 0 0 16px;
}

.cta-close p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--ondark-body);
  max-width: 56ch;
}

.cta-close a.inline-link { color: var(--teal-light); }

.cta-close__actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn--ondark-primary {
  background: var(--ground);
  color: var(--ink);
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
}
.btn--ondark-primary:hover { background: var(--teal-light); }

.btn--ondark-secondary {
  border: 1px solid rgba(251, 252, 253, .28);
  color: var(--ground);
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
}
.btn--ondark-secondary:hover { border-color: var(--teal-light); color: var(--teal-light); }

/* =========================================================================
   Responsive
   ========================================================================= */

@media (max-width: 900px) {
  .hero .container,
  .about .container,
  .contact-close .container,
  .playbooks-hero .container,
  .cta-close .container {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__media { order: -1; max-width: 360px; }

  .card-grid,
  .cover-grid,
  .stat-band .container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .interests-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .teaser__head { align-items: flex-start; }

  .playbook-row .container {
    grid-template-columns: minmax(0, 1fr);
  }
  .playbook-cover { max-width: 320px; }
}

@media (max-width: 640px) {
  :root { --content-pad: 22px; }

  .section,
  .hero .container,
  .about .container,
  .expertise .container,
  .teaser-wrap .container,
  .career .container,
  .interests .container,
  .contact-close .container,
  .playbooks-hero .container,
  .playbook-row .container,
  .cta-close .container {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .hero .container { padding-top: 56px; padding-bottom: 48px; }

  .card-grid,
  .cover-grid,
  .interests-grid,
  .stat-band .container,
  .index-card__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .teaser { padding: 32px; }

  .cta-close .container { grid-template-columns: minmax(0, 1fr); }
  .cta-close__actions { width: 100%; }
}