/*
  MDC Website v2.0 — Build 2.2
  File: style.css
  Purpose: Complete executable homepage layout, components, responsiveness, and interactions.
*/
* { box-sizing: border-box; }
body { margin: 0; background: var(--color-white); overflow-x: hidden; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }

.skip-link {
  position: absolute; left: -999px; top: 1rem; z-index: 999;
  background: var(--color-gold-500); color: var(--color-navy-950);
  padding: .75rem 1rem; border-radius: var(--radius-sm); font-weight: 800;
}
.skip-link:focus { left: 1rem; }

.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }
.section { padding: var(--section-padding) 0; }
.section-muted { background: var(--color-gray-50); }
.section-dark { background: radial-gradient(circle at top right, #1a4d78 0, var(--color-navy-900) 35%, var(--color-navy-950) 100%); color: var(--color-white); }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.88); backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(217,225,234,.75);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); background: rgba(255,255,255,.96); }
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .85rem; min-width: max-content; }
.brand-mark {
  width: 54px; height: 54px; display: grid; place-items: center;
  border-radius: 16px; background: linear-gradient(135deg, var(--color-navy-900), var(--color-emerald-600));
  color: var(--color-white); font-family: var(--font-heading); font-weight: 800;
  letter-spacing: -.05em; box-shadow: var(--shadow-sm);
}
.brand-text { display: grid; line-height: 1.1; }
.brand-text strong { font-family: var(--font-heading); color: var(--color-navy-950); font-size: 1.1rem; }
.brand-text small { color: var(--color-gray-600); font-size: .75rem; }
.primary-nav { display: flex; align-items: center; gap: 1.35rem; font-weight: 700; color: var(--color-gray-800); }
.primary-nav a { position: relative; padding: .45rem 0; }
.primary-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: var(--color-emerald-600); transition: width var(--transition);
}
.primary-nav a:hover::after, .primary-nav a.active::after { width: 100%; }
.nav-toggle { display: none; border: 0; background: transparent; width: 44px; height: 44px; padding: .4rem; }
.nav-toggle span { display: block; height: 2px; background: var(--color-navy-900); margin: 7px 0; transition: var(--transition); }

.hero { padding: clamp(5rem, 9vw, 8rem) 0; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: auto -15% -35% auto; width: 520px; height: 520px; background: rgba(213,166,66,.2); filter: blur(80px); border-radius: 50%; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); gap: clamp(2rem, 6vw, 5rem); align-items: center; position: relative; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px;
  padding: .85rem 1.25rem; border-radius: 999px; border: 1px solid transparent;
  font-weight: 800; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-primary { background: var(--color-gold-500); color: var(--color-navy-950); }
.btn-secondary { background: rgba(255,255,255,.09); color: var(--color-white); border-color: rgba(255,255,255,.25); }
.hero-panel { display: grid; gap: 1rem; }
.impact-card, .service-card, .value-card, .contact-form {
  background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow-sm);
}
.hero-panel .impact-card { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.16); backdrop-filter: blur(14px); }
.impact-card.featured { padding: 2rem; }
.impact-number { color: var(--color-gold-500); font: 800 clamp(3rem, 8vw, 5.8rem)/1 var(--font-heading); letter-spacing: -.07em; }
.plus { color: var(--color-gold-500); font-size: 2rem; font-weight: 900; }
.impact-card p, .impact-card span { color: rgba(255,255,255,.82); }
.mini-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.mini-grid strong { display: block; color: var(--color-white); font-family: var(--font-heading); font-size: 1.2rem; }

.two-column { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.section-heading { max-width: 760px; margin-bottom: 2.2rem; }
.section-heading.center { text-align: center; margin-inline: auto; }
.card-grid { display: grid; gap: 1.2rem; }
.card-grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0,1fr)); }
.service-card, .value-card { transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.service-card:hover, .value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(22,134,95,.35); }
.icon-badge { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; background: rgba(22,134,95,.11); color: var(--color-emerald-700); font-weight: 900; margin-bottom: 1rem; }
.feature-band { display: grid; grid-template-columns: 1fr .9fr; gap: 2rem; align-items: center; padding: clamp(2rem, 5vw, 3.5rem); border-radius: var(--radius-xl); background: linear-gradient(135deg, #ffffff, #f3f8f5); border: 1px solid var(--color-gray-200); box-shadow: var(--shadow-sm); }
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .9rem; }
.check-list li { position: relative; padding-left: 2rem; font-weight: 700; color: var(--color-gray-800); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--color-emerald-600); font-weight: 900; }
.value-card h3 { color: var(--color-navy-900); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.contact-note { background: var(--color-white); border-left: 4px solid var(--color-gold-500); padding: 1rem; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); color: var(--color-gray-800); }
.contact-form { display: grid; gap: .75rem; }
.contact-form label { font-weight: 800; color: var(--color-navy-900); }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; border: 1px solid var(--color-gray-200); border-radius: var(--radius-md); padding: .9rem 1rem; background: var(--color-white); color: var(--color-charcoal);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 3px solid rgba(213,166,66,.25); border-color: var(--color-gold-500); }
.form-status { margin: .25rem 0 0; font-weight: 700; color: var(--color-emerald-700); }

.site-footer { background: var(--color-navy-950); color: var(--color-white); padding: 4rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 2rem; }
.footer-brand { margin-bottom: 1rem; }
.footer-brand .brand-text strong, .footer-brand .brand-text small { color: var(--color-white); }
.site-footer h3 { color: var(--color-white); font-size: 1rem; }
.site-footer a { display: block; color: rgba(255,255,255,.78); margin-bottom: .55rem; }
.site-footer p { color: rgba(255,255,255,.72); }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; align-items: center; border-top: 1px solid rgba(255,255,255,.12); margin-top: 2.5rem; padding-top: 1.25rem; }
.to-top { border: 1px solid rgba(255,255,255,.25); background: transparent; color: var(--color-white); border-radius: 999px; padding: .6rem .9rem; cursor: pointer; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity 700ms ease, transform 700ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .primary-nav {
    position: fixed; inset: 82px 1rem auto 1rem; display: grid; gap: .25rem;
    padding: 1rem; background: var(--color-white); border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); transform: translateY(-18px);
    opacity: 0; pointer-events: none; transition: var(--transition);
  }
  .primary-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .primary-nav a { padding: .8rem 1rem; border-radius: var(--radius-md); }
  .primary-nav a:hover { background: var(--color-gray-50); }
  .hero-grid, .two-column, .feature-band, .contact-grid { grid-template-columns: 1fr; }
  .card-grid.three, .card-grid.four, .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 640px) {
  .container { width: min(100% - 1.25rem, var(--container)); }
  .brand-text small { display: none; }
  .mini-grid, .card-grid.three, .card-grid.four, .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; }
}


/* Build 2.3 — Multi-page additions */
.page-hero { padding: clamp(5rem, 8vw, 7rem) 0 clamp(3.5rem, 6vw, 5rem); }
.narrow { max-width: 880px; }
.prose p { font-size: 1.05rem; }
.statement-card {
  background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow-sm);
}
.feature-band.dark { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.14); }
.check-list.light li { color: rgba(255,255,255,.88); }
.service-list { display: grid; gap: 1.25rem; }
.service-detail {
  display: grid; grid-template-columns: 72px 1fr; gap: 1.25rem;
  background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem); box-shadow: var(--shadow-sm);
}
.service-detail > span {
  width: 56px; height: 56px; border-radius: 18px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--color-navy-900), var(--color-emerald-600)); color: var(--color-white);
  font-weight: 900; font-family: var(--font-heading);
}
.service-detail ul { margin: 1rem 0 0; padding-left: 1.25rem; color: var(--color-gray-700); }
.service-detail li { margin-bottom: .45rem; }
.cta-panel {
  display: flex; justify-content: space-between; align-items: center; gap: 2rem;
  background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem); box-shadow: var(--shadow-sm);
}
.contact-sidebar {
  background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow-sm);
}
.contact-method { display: grid; gap: .25rem; padding: 1rem 0; border-bottom: 1px solid var(--color-gray-200); }
.contact-method:last-of-type { border-bottom: 0; }
.contact-method strong { color: var(--color-navy-900); }
.contact-method a, .contact-method span { color: var(--color-gray-700); }
.small-note { font-size: .9rem; color: var(--color-gray-600); margin-top: 1rem; }
@media (max-width: 760px) {
  .service-detail { grid-template-columns: 1fr; }
  .cta-panel { flex-direction: column; align-items: flex-start; }
}


/* Build 2.4 — Projects, Publications, Training */
.portfolio-grid,
.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
.portfolio-card,
.publication-card,
.course-card,
.training-panel {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  box-shadow: var(--shadow-sm);
}
.portfolio-card,
.publication-card,
.course-card {
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.portfolio-card:hover,
.publication-card:hover,
.course-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(22, 134, 95, .35);
}
.tag {
  display: inline-flex;
  align-items: center;
  width: max-content;
  border-radius: 999px;
  padding: .35rem .7rem;
  background: rgba(22, 134, 95, .1);
  color: var(--color-emerald-700);
  font-size: .78rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: .85rem;
}
.portfolio-card ul {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  color: var(--color-gray-700);
}
.process-list {
  display: grid;
  gap: 1rem;
}
.process-list > div {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.process-list strong,
.course-card > span {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--color-navy-900), var(--color-emerald-600));
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 900;
}
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1.5rem;
}
.filter-btn {
  border: 1px solid var(--color-gray-200);
  border-radius: 999px;
  background: var(--color-white);
  color: var(--color-gray-800);
  padding: .7rem 1rem;
  font-weight: 800;
  cursor: pointer;
}
.filter-btn.active,
.filter-btn:hover {
  background: var(--color-navy-900);
  color: var(--color-white);
  border-color: var(--color-navy-900);
}
.publication-list {
  display: grid;
  gap: 1rem;
}
.publication-card {
  display: grid;
  gap: .35rem;
}
.publication-card.is-hidden {
  display: none;
}
.publication-card a,
.course-card a {
  font-weight: 900;
  color: var(--color-emerald-700);
  margin-top: .5rem;
}
.course-card {
  display: grid;
  align-content: start;
  gap: .65rem;
}
.format-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 1rem;
}
.format-grid span {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: .85rem;
  font-weight: 800;
  color: var(--color-navy-900);
  background: var(--color-gray-50);
}
@media (max-width: 760px) {
  .portfolio-grid,
  .course-grid,
  .format-grid { grid-template-columns: 1fr; }
  .process-list > div { grid-template-columns: 1fr; }
}


/* Build 2.5 — Team, Careers, and Insights pages */
.narrow { max-width: 860px; }
.people-grid .profile-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.avatar {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-navy-900), var(--color-emerald-600));
  font-family: var(--font-heading);
  font-weight: 800;
  margin-bottom: 1rem;
}
.profile-card .role {
  color: var(--color-emerald-700);
  font-weight: 800;
  margin-top: -.35rem;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}
.tag-list li {
  font-size: .78rem;
  font-weight: 800;
  padding: .35rem .65rem;
  border-radius: 999px;
  color: var(--color-navy-900);
  background: var(--color-gray-100);
}
.application-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(8,44,74,.96), rgba(8,95,80,.94));
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.application-panel p { color: rgba(255,255,255,.82); }
.insight-layout {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 1.5rem;
  align-items: start;
}
.insight-feature,
.insight-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.insight-feature {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  min-height: 100%;
  background: linear-gradient(180deg, #ffffff, #f8fbfd);
}
.content-type,
.insight-card span {
  display: inline-flex;
  margin-bottom: .85rem;
  padding: .35rem .7rem;
  border-radius: 999px;
  background: rgba(23, 128, 112, .12);
  color: var(--color-emerald-700);
  font-size: .78rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.insight-list { display: grid; gap: 1rem; }
.topic-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}
.topic-cloud a {
  display: inline-flex;
  padding: .7rem 1rem;
  border-radius: 999px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  font-weight: 800;
  color: var(--color-navy-900);
  box-shadow: var(--shadow-sm);
}
@media (max-width: 820px) {
  .application-panel,
  .insight-layout { grid-template-columns: 1fr; }
}


/* Build 2.6 — SEO, legal, sitemap, and launch essentials */
.legal-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
.legal-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.legal-card h2 { margin-top: 0; }
.error-hero { min-height: 58vh; display: grid; align-items: center; }
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .9rem;
}
.sitemap-grid a {
  display: block;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  color: var(--color-navy-900);
  font-weight: 800;
}
.sitemap-grid a:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
@media (max-width: 760px) {
  .legal-layout, .sitemap-grid { grid-template-columns: 1fr; }
}