/* ==========================================================================
   KPS Learning Chronicle — Base, Header, Navigation & Footer Layout
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.68;
  color: var(--text-main);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

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

img {
  height: auto;
}

a {
  color: var(--ink-navy);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--t-fast) ease, background-color var(--t-fast) ease, border-color var(--t-fast) ease;
}

a:hover {
  color: var(--crest-maroon);
}

:focus-visible {
  outline: 2px solid var(--antique-brass);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -120px;
  left: 1rem;
  z-index: 2000;
  background: var(--ink-navy);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: var(--fs-sm);
  text-decoration: none;
  border: 2px solid var(--antique-brass);
  transition: top var(--t-fast) ease;
}

.skip-link:focus {
  top: 1rem;
  color: var(--white);
}

/* Typography Hierarchy */
h1, h2, h3, h4 {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink-navy);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: 500; line-height: 1.24; }
h4 { font-size: var(--fs-h4); font-family: var(--font-sans); font-weight: 600; letter-spacing: 0; }

p {
  margin: 0 0 1rem;
  max-width: 66ch;
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.65;
  color: var(--text-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--crest-maroon);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1.5px;
  background-color: var(--antique-brass);
  flex-shrink: 0;
}

.eyebrow--light {
  color: var(--antique-brass);
}

.eyebrow--light::before {
  background-color: var(--antique-brass);
}

.eyebrow--green {
  color: var(--forest-green);
}

/* Containers & Surfaces */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--section-py);
  position: relative;
}

.section--compact {
  padding-block: var(--section-py-sm);
}

.section--ivory {
  background-color: var(--warm-ivory);
}

.section--ivory-alt {
  background-color: var(--warm-ivory-alt);
}

.section--white {
  background-color: var(--white);
}

.section--navy {
  background-color: var(--ink-navy);
  color: var(--text-on-dark);
}

.section--navy h1,
.section--navy h2,
.section--navy h3,
.section--navy h4 {
  color: var(--white);
}

.section--navy .lead,
.section--navy p {
  color: var(--text-on-dark-muted);
}

.section--green {
  background-color: var(--forest-green);
  color: var(--text-on-dark);
}

.section--green h1,
.section--green h2,
.section--green h3,
.section--green h4 {
  color: var(--white);
}

.section--green .lead,
.section--green p {
  color: var(--text-on-dark-muted);
}

.rule-divider {
  border: 0;
  height: 1px;
  background: var(--border-subtle);
  margin-block: 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8125rem 1.5rem;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  border-radius: var(--radius-xs);
  border: 1.5px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--t-fast) var(--ease-editorial),
              background-color var(--t-fast) ease,
              border-color var(--t-fast) ease,
              color var(--t-fast) ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background-color: var(--ink-navy);
  color: var(--white);
  border-color: var(--ink-navy);
}

.btn--primary:hover {
  background-color: var(--forest-green);
  border-color: var(--forest-green);
  color: var(--white);
}

.btn--brass {
  background-color: var(--antique-brass);
  color: var(--ink-navy-deep);
  border-color: var(--antique-brass);
}

.btn--brass:hover {
  background-color: #D2AA69;
  border-color: #D2AA69;
  color: var(--ink-navy-deep);
}

.btn--outline {
  background-color: transparent;
  color: var(--ink-navy);
  border-color: var(--ink-navy);
}

.btn--outline:hover {
  background-color: var(--ink-navy);
  color: var(--white);
}

.btn--outline-light {
  background-color: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.45);
}

.btn--outline-light:hover {
  background-color: var(--white);
  color: var(--ink-navy);
  border-color: var(--white);
}

.btn--sm {
  padding: 0.5625rem 1.1rem;
  font-size: var(--fs-xs);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--forest-green);
  text-decoration: none;
  border-bottom: 1.5px solid var(--antique-brass);
  padding-bottom: 0.15rem;
}

.text-link:hover {
  color: var(--crest-maroon);
  border-bottom-color: var(--crest-maroon);
}

.text-link svg {
  transition: transform var(--t-fast) ease;
}

.text-link:hover svg {
  transform: translateX(3px);
}

/* ==========================================================================
   Two-Level Header
   ========================================================================== */
.utility-bar {
  background-color: var(--ink-navy);
  color: var(--text-on-dark);
  font-size: 0.78rem;
  line-height: 1.3;
  border-bottom: 1px solid rgba(195, 154, 88, 0.28);
}

.utility-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 0.5rem;
  flex-wrap: wrap;
}

.utility-bar__group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.utility-bar__item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-on-dark-muted);
  text-decoration: none;
}

.utility-bar__item strong {
  color: var(--white);
  font-weight: 600;
}

.utility-bar a.utility-bar__item:hover {
  color: var(--antique-brass);
}

.utility-bar__divider {
  width: 1px;
  height: 12px;
  background-color: rgba(255, 255, 255, 0.22);
}

.utility-bar__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid rgba(195, 154, 88, 0.45);
  border-radius: var(--radius-xs);
  color: var(--antique-brass);
  font-weight: 600;
  text-decoration: none;
}

.utility-bar__pill:hover {
  background-color: var(--antique-brass);
  color: var(--ink-navy-deep);
}

/* Main Navigation Bar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow var(--t-base) ease, background-color var(--t-base) ease;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 28px rgba(23, 45, 59, 0.08);
  background-color: rgba(255, 255, 255, 0.99);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-lockup__img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.primary-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.15rem;
}

.primary-nav__item {
  position: relative;
}

.primary-nav__link,
.primary-nav__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.65rem 0.78rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-navy);
  background: transparent;
  border: 0;
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  transition: color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.primary-nav__link:hover,
.primary-nav__trigger:hover,
.primary-nav__item.is-open > .primary-nav__trigger {
  color: var(--crest-maroon);
  background-color: var(--warm-ivory);
}

.primary-nav__link.is-active,
.primary-nav__trigger.is-active {
  color: var(--crest-maroon);
}

.primary-nav__link.is-active::after,
.primary-nav__trigger.is-active::after {
  content: "";
  position: absolute;
  left: 0.78rem;
  right: 0.78rem;
  bottom: 0.32rem;
  height: 2px;
  background-color: var(--antique-brass);
}

.primary-nav__trigger svg {
  transition: transform var(--t-fast) ease;
}

.primary-nav__item.is-open > .primary-nav__trigger svg {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 248px;
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--crest-maroon);
  box-shadow: var(--shadow-card);
  padding: 0.5rem 0;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--t-fast) ease, transform var(--t-fast) var(--ease-editorial), visibility var(--t-fast);
  z-index: 1200;
}

.primary-nav__item.is-open > .nav-dropdown,
.primary-nav__item:focus-within > .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.58rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  text-decoration: none;
}

.nav-dropdown a:hover,
.nav-dropdown a.is-active {
  background-color: var(--warm-ivory);
  color: var(--crest-maroon);
}

.nav-dropdown a.is-active {
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-cta-desktop {
  display: none;
}

.mobile-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--warm-ivory);
  color: var(--ink-navy);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 700;
  cursor: pointer;
}

@media (min-width: 1120px) {
  .primary-nav {
    display: flex;
  }
  .header-cta-desktop {
    display: inline-flex;
  }
  .mobile-menu-toggle {
    display: none;
  }
}

@media (max-width: 767px) {
  .utility-bar__hide-sm {
    display: none;
  }
  .brand-lockup__img {
    height: 44px;
  }
  .site-header__inner {
    min-height: 66px;
  }
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 1500;
  pointer-events: none;
  visibility: hidden;
}

.mobile-drawer.is-open {
  pointer-events: auto;
  visibility: visible;
}

.mobile-drawer__backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(15, 32, 43, 0.62);
  opacity: 0;
  transition: opacity var(--t-base) ease;
}

.mobile-drawer.is-open .mobile-drawer__backdrop {
  opacity: 1;
}

.mobile-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(380px, 90vw);
  background-color: var(--warm-ivory);
  border-left: 1px solid var(--border-subtle);
  transform: translateX(100%);
  transition: transform var(--t-base) var(--ease-editorial);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-drawer.is-open .mobile-drawer__panel {
  transform: translateX(0);
}

.mobile-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background-color: var(--white);
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-drawer__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--warm-ivory);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  color: var(--ink-navy);
  cursor: pointer;
}

.mobile-drawer__body {
  padding: 1.25rem;
  flex: 1;
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav-list > li {
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav__link,
.mobile-nav__group-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0.25rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-navy);
  background: transparent;
  border: 0;
  text-decoration: none;
  text-align: left;
  cursor: pointer;
}

.mobile-nav__link.is-active {
  color: var(--crest-maroon);
}

.mobile-nav__sub {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0 0 0 0.9rem;
  border-left: 2px solid var(--antique-brass);
  display: none;
}

.mobile-nav__sub.is-open {
  display: block;
}

.mobile-nav__sub a {
  display: block;
  padding: 0.48rem 0.5rem;
  font-size: 0.875rem;
  color: var(--text-main);
  text-decoration: none;
}

.mobile-nav__sub a.is-active {
  color: var(--crest-maroon);
  font-weight: 700;
}

.mobile-drawer__footer {
  padding: 1.25rem;
  background-color: var(--white);
  border-top: 1px solid var(--border-subtle);
  display: grid;
  gap: 0.65rem;
}

/* ==========================================================================
   Interior Page Banner & Breadcrumbs
   ========================================================================== */
.page-banner {
  background-color: var(--ink-navy);
  color: var(--white);
  padding-block: clamp(2.5rem, 5vw, 4.25rem);
  border-bottom: 3px solid var(--antique-brass);
  position: relative;
  overflow: hidden;
}

.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 20%, rgba(195, 154, 88, 0.16), transparent 55%),
              linear-gradient(120deg, rgba(36, 75, 67, 0.42), transparent 65%);
  pointer-events: none;
}

.page-banner__inner {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--text-on-dark-muted);
}

.breadcrumb a {
  color: var(--antique-brass);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.page-banner__title {
  color: var(--white);
  margin-bottom: 0.65rem;
  max-width: 22ch;
}

.page-banner__lead {
  color: var(--text-on-dark-muted);
  font-size: var(--fs-lead);
  max-width: 60ch;
}

/* Interior Grid with Side Navigation */
.interior-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 992px) {
  .interior-shell--with-aside {
    grid-template-columns: 280px 1fr;
    gap: 3.5rem;
  }
}

.side-nav {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--ink-navy);
  padding: 1.35rem;
}

.side-nav__title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--crest-maroon);
  margin-bottom: 0.9rem;
}

.side-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-nav__list li + li {
  border-top: 1px solid var(--warm-ivory-alt);
}

.side-nav__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.68rem 0.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  text-decoration: none;
}

.side-nav__list a:hover {
  color: var(--crest-maroon);
}

.side-nav__list a.is-active {
  color: var(--ink-navy);
  font-weight: 700;
  border-left: 3px solid var(--antique-brass);
  padding-left: 0.65rem;
}

.side-nav__card {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background-color: var(--forest-green);
  color: var(--white);
}

.side-nav__card h4 {
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 0.45rem;
}

.side-nav__card p {
  font-size: 0.875rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--ink-navy);
  color: var(--text-on-dark);
  padding-top: clamp(3.5rem, 6vw, 5rem);
  border-top: 4px solid var(--antique-brass);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-dark);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1.15fr;
    gap: 2rem;
  }
}

.footer-brand-plaque {
  display: inline-block;
  background-color: var(--warm-ivory);
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(195, 154, 88, 0.5);
  margin-bottom: 1.15rem;
}

.footer-brand-plaque img {
  height: 50px;
  width: auto;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 1.15rem;
}

.footer-col__title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--antique-brass);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--text-on-dark-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--antique-brass);
}

.footer-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-on-dark-muted);
}

.footer-contact-list a {
  color: var(--white);
  text-decoration: none;
}

.footer-contact-list a:hover {
  color: var(--antique-brass);
}

.footer-social {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xs);
  color: var(--white);
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-social:hover {
  border-color: var(--antique-brass);
  color: var(--antique-brass);
}

.footer-motto-band {
  padding-block: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-on-dark-muted);
}

.footer-motto-seal {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--antique-brass);
  letter-spacing: 0.01em;
}

/* Scroll to Top */
.scroll-top-btn {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--ink-navy);
  color: var(--antique-brass);
  border: 1.5px solid var(--antique-brass);
  border-radius: var(--radius-xs);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--t-fast) ease, transform var(--t-fast) ease;
}

.scroll-top-btn.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* Reveal Animations (Safe & Respects Reduced Motion) */
[data-reveal] {
  opacity: 1;
  transform: none;
  transition: opacity 280ms var(--ease-editorial), transform 280ms var(--ease-editorial);
}

.js-ready [data-reveal]:not(.is-revealed) {
  opacity: 0;
  transform: translateY(10px);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  .js-ready [data-reveal]:not(.is-revealed) {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}