/* ==========================================================================
   DH LA DEMEURE HISTORIQUE - DUKE.EDU INSTITUTIONAL DESIGN SYSTEM
   Portail d'Information Officiel - Association Loi 1901 - RNA W751003815
   ========================================================================== */

:root {
  --duke-royal-blue: #001A57;
  --duke-navy-accent: #051C48;
  --duke-bright-blue: #00539B;
  --duke-action-blue: #0073D1;
  --duke-gray-canvas: #F3F4F6;
  --alabaster-white: #FFFFFF;
  --charcoal-black: #111827;
  --text-muted: #6B7280;
  --border-subtle: #E5E7EB;
  --font-serif: Georgia, "Times New Roman", Garamond, "Playfair Display", serif;
  --font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 26, 87, 0.12);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.65;
  background-color: var(--duke-gray-canvas);
  color: var(--charcoal-black);
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--duke-gray-canvas);
}

/* Reading Progress Bar */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--duke-action-blue);
  z-index: 10000;
  width: 0%;
  transition: width 0.1s ease-out;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--duke-royal-blue);
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
h2 { font-size: 1.75rem; margin-top: 1.5rem; }
h3 { font-size: 1.35rem; margin-top: 1.25rem; }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1.25rem;
  color: #2D3748;
  font-size: 1.025rem;
  line-height: 1.75;
}

a {
  color: var(--duke-bright-blue);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

a:hover {
  color: var(--duke-action-blue);
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   LEVEL 1: UTILITY STRIP
   ========================================================================== */
.utility-strip {
  background-color: var(--duke-navy-accent);
  color: #FFFFFF;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.utility-strip-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

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

.utility-badge {
  background: rgba(255, 255, 255, 0.12);
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.utility-right a {
  color: #E2E8F0;
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 12px;
}

.utility-right a:hover {
  color: #FFFFFF;
}

/* ==========================================================================
   LEVEL 2: MAIN NAVIGATION BAR
   ========================================================================== */
.main-header {
  background-color: var(--duke-royal-blue);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0, 26, 87, 0.2);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}

.brand-logo {
  display: flex;
  flex-direction: column;
}

.brand-title {
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  line-height: 1.2;
}

.brand-subtitle {
  color: #93C5FD;
  font-size: 0.725rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 600;
}

/* Desktop Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.25rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.65rem 0.9rem;
  border-radius: 4px;
  letter-spacing: 0.01em;
  min-height: 44px;
}

.nav-link:hover, .nav-item:hover > .nav-link {
  background-color: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
}

.dropdown-caret {
  font-size: 0.65rem;
  opacity: 0.8;
  transition: transform 0.2s ease;
}

.nav-item:hover .dropdown-caret {
  transform: rotate(180deg);
}

/* Dropdown Submenu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--alabaster-white);
  min-width: 250px;
  border-radius: 6px;
  box-shadow: 0 10px 25px rgba(0, 26, 87, 0.18);
  border: 1px solid var(--border-subtle);
  list-style: none;
  padding: 0.5rem 0;
  display: none;
  z-index: 1001;
}

.nav-item:hover .dropdown-menu {
  display: block;
}

.dropdown-item a {
  display: block;
  padding: 0.6rem 1.25rem;
  color: var(--duke-royal-blue);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  border-bottom: 1px solid #F3F4F6;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.dropdown-item:last-child a {
  border-bottom: none;
}

.dropdown-item a:hover {
  background-color: #EFF6FF;
  color: var(--duke-bright-blue);
  padding-left: 1.45rem;
}

/* Header Featured CTA */
.btn-header-cta {
  background-color: var(--duke-action-blue);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 0.825rem;
  padding: 0.65rem 1.25rem;
  border-radius: 4px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-left: 0.5rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 115, 209, 0.35);
}

.btn-header-cta:hover {
  background-color: #005fad;
  box-shadow: 0 4px 10px rgba(0, 115, 209, 0.45);
}

/* Mobile Hamburger Toggle */
.mobile-toggle-btn {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
  padding: 0.5rem 0.75rem;
  font-size: 1.25rem;
  border-radius: 4px;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   BUTTONS, PILLS & BADGES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.925rem;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  min-height: 44px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--duke-bright-blue);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--duke-action-blue);
  color: #FFFFFF;
}

.btn-secondary {
  background-color: transparent;
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
}

.btn-dark {
  background-color: var(--duke-royal-blue);
  color: #FFFFFF;
}

.btn-dark:hover {
  background-color: var(--duke-navy-accent);
  color: #FFFFFF;
}

.btn-outline-dark {
  background-color: transparent;
  border-color: var(--duke-royal-blue);
  color: var(--duke-royal-blue);
}

.btn-outline-dark:hover {
  background-color: var(--duke-royal-blue);
  color: #FFFFFF;
}

.pill-badge {
  display: inline-block;
  background-color: var(--duke-bright-blue);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 0.75rem;
  white-space: nowrap;
}

.pill-badge-outline {
  display: inline-block;
  border: 1px solid var(--duke-bright-blue);
  color: var(--duke-bright-blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   HERO BANNER & SHOWCASE OVERLAY
   ========================================================================== */
.hero-section {
  position: relative;
  width: 100%;
  min-height: 520px;
  background-color: var(--duke-navy-accent);
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.65;
  filter: brightness(0.9);
}

.hero-overlay-card {
  position: relative;
  z-index: 10;
  background: rgba(5, 28, 72, 0.92);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 2.75rem;
  max-width: 760px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.hero-title {
  color: #FFFFFF;
  font-size: 2.35rem;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.hero-summary {
  color: #E2E8F0;
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   CALLOUTS, MISSION STATEMENT & STATEMENTS
   ========================================================================== */
.mission-statement-callout {
  background-color: var(--alabaster-white);
  border-left: 5px solid var(--duke-bright-blue);
  border-radius: 0 8px 8px 0;
  padding: 2.25rem 2.5rem;
  margin: 2.5rem 0;
  box-shadow: var(--shadow-md);
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.mission-statement-callout h2, .mission-statement-callout h3 {
  color: var(--duke-royal-blue);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mission-statement-text {
  font-size: 1.15rem;
  line-height: 1.85;
  color: #1F2937;
  font-style: italic;
  font-family: var(--font-serif);
}

.reinvestment-box {
  background-color: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--duke-royal-blue);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.6;
}

.funding-declaration-box {
  background: var(--alabaster-white);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.75rem 2rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   CARDS & GRIDS
   ========================================================================== */
.section-wrapper {
  padding: 3.5rem 0;
}

.section-wrapper-alt {
  padding: 3.5rem 0;
  background-color: #E5E7EB;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-header h2 {
  font-size: 2rem;
  color: var(--duke-royal-blue);
  position: relative;
  display: inline-block;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 750px;
}

/* Card base */
.card {
  background-color: var(--alabaster-white);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.card-img-container {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
  background-color: #CBD5E1;
}

.card-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card-img-container img {
  transform: scale(1.04);
}

.card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  color: var(--duke-royal-blue);
  margin-bottom: 0.75rem;
}

.card-text {
  font-size: 0.95rem;
  color: #374151;
  line-height: 1.65;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.card-footer {
  margin-top: auto;
  padding-top: 0.75rem;
}

/* 4-Card Grid (index.php) */
.grid-4-activities {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* 3-Column Content Cards */
.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

/* 2-Column Duke Split Grid */
.duke-split-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: stretch;
}

.duke-split-left .card {
  height: 100%;
}

.duke-split-left .card-img-container {
  height: 320px;
}

.duke-split-right {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.duke-stacked-item {
  background: var(--alabaster-white);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.duke-stacked-img {
  width: 120px;
  height: 90px;
  flex-shrink: 0;
  border-radius: 4px;
  overflow: hidden;
}

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

.duke-stacked-content h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.duke-stacked-content p {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

/* ==========================================================================
   BLOCK QUOTE & EDITORIAL SECTION
   ========================================================================== */
.editorial-quote-section {
  background-color: var(--duke-gray-canvas);
  border-top: 1px solid #D1D5DB;
  border-bottom: 1px solid #D1D5DB;
  padding: 4rem 0;
  text-align: center;
}

.editorial-quote-content {
  max-width: 900px;
  margin: 0 auto;
}

.large-serif-quote {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  line-height: 1.5;
  color: var(--duke-royal-blue);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.quote-author {
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

/* ==========================================================================
   STATISTICAL INDICATOR PANEL
   ========================================================================== */
.stats-panel {
  background: var(--duke-royal-blue);
  color: #FFFFFF;
  border-radius: 8px;
  padding: 3rem 2rem;
  box-shadow: var(--shadow-lg);
  margin: 3rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item {
  border-right: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0 1rem;
}

.stat-item:last-child {
  border-right: none;
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 700;
  color: #93C5FD;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  color: #E2E8F0;
  line-height: 1.4;
}

/* ==========================================================================
   TESTIMONIAL PROFILE FRAME
   ========================================================================== */
.testimonial-section {
  background-color: var(--duke-royal-blue);
  color: #FFFFFF;
  border-radius: 8px;
  padding: 3rem 2.5rem;
  margin: 3rem 0;
  display: flex;
  align-items: center;
  gap: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.testimonial-avatar-frame {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 4px solid var(--duke-action-blue);
  overflow: hidden;
  flex-shrink: 0;
}

.testimonial-avatar-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-text-block {
  flex-grow: 1;
}

.testimonial-quote {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-style: italic;
  line-height: 1.6;
  color: #F8FAFC;
  margin-bottom: 1rem;
}

.testimonial-cite {
  font-size: 0.95rem;
  font-weight: 700;
  color: #93C5FD;
}

.testimonial-role {
  font-size: 0.85rem;
  color: #CBD5E1;
}

/* ==========================================================================
   PAGE ARTICLE CONTENT STYLING (2000+ / 1500+ WORDS)
   ========================================================================== */
.article-container {
  background: var(--alabaster-white);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 3rem 3.5rem;
  margin: 2.5rem auto;
  box-shadow: var(--shadow-sm);
  max-width: 1100px;
}

.article-header {
  border-bottom: 2px solid #E5E7EB;
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.article-body h2 {
  color: var(--duke-royal-blue);
  border-bottom: 1px solid #E5E7EB;
  padding-bottom: 0.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.75rem;
}

.article-body h3 {
  color: var(--duke-navy-accent);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
}

.article-body p {
  margin-bottom: 1.4rem;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #1F2937;
}

.article-body ul, .article-body ol {
  margin-left: 1.75rem;
  margin-bottom: 1.5rem;
  color: #1F2937;
  font-size: 1.025rem;
  line-height: 1.75;
}

.article-body li {
  margin-bottom: 0.6rem;
}

.article-inline-image-frame {
  margin: 2rem 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background-color: #E2E8F0;
}

.article-inline-image-frame img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.data-table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
}

.civic-data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.civic-data-table th {
  background-color: var(--duke-royal-blue);
  color: #FFFFFF;
  padding: 0.85rem 1.25rem;
  font-weight: 600;
  border: 1px solid var(--duke-navy-accent);
}

.civic-data-table td {
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--border-subtle);
  color: #374151;
}

.civic-data-table tr:nth-child(even) {
  background-color: #F8FAFC;
}

/* ==========================================================================
   FORMS (BENEVOLAT & CONTACT)
   ========================================================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--duke-royal-blue);
  font-size: 0.95rem;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--charcoal-black);
  background-color: #FFFFFF;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--duke-action-blue);
  box-shadow: 0 0 0 3px rgba(0, 115, 209, 0.2);
}

/* ==========================================================================
   UNIVERSAL FOOTER (4-COLUMN DUKE STYLE)
   ========================================================================== */
.site-footer {
  background-color: var(--duke-royal-blue);
  color: #FFFFFF;
  margin-top: auto;
  border-top: 4px solid var(--duke-action-blue);
}

.footer-top {
  padding: 4rem 0 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.4fr;
  gap: 2.5rem;
}

.footer-col h3 {
  color: #93C5FD;
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-serif);
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background-color: var(--duke-action-blue);
}

.footer-col p {
  color: #CBD5E1;
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.footer-legal-block {
  background: rgba(5, 28, 72, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 1.25rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #E2E8F0;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #CBD5E1;
  font-size: 0.9rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: #FFFFFF;
  padding-left: 4px;
}

.footer-bottom {
  background-color: var(--duke-navy-accent);
  padding: 1.25rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.825rem;
  color: #94A3B8;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-bottom-links a {
  color: #CBD5E1;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-bottom-links a:hover {
  color: #FFFFFF;
}

/* ==========================================================================
   MOBILE RESPONSIVENESS (BREAKPOINTS)
   ========================================================================== */
@media (max-width: 992px) {
  .grid-4-activities {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3-col {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .duke-split-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding: 1.25rem 0;
  }
  
  .stat-item:last-child {
    border-bottom: none;
  }
}

@media (max-width: 768px) {
  .utility-strip-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .mobile-toggle-btn {
    display: flex;
  }
  
  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    background-color: var(--duke-royal-blue);
    position: absolute;
    top: 100%;
    left: 0;
    padding: 1rem 1.5rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-menu.is-active {
    display: flex;
  }
  
  .nav-item {
    width: 100%;
  }
  
  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .dropdown-menu {
    position: static;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 4px;
    margin-left: 0.5rem;
    margin-bottom: 0.5rem;
  }
  
  .dropdown-item a {
    color: #FFFFFF;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  
  .dropdown-item a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
  }
  
  .btn-header-cta {
    width: 100%;
    margin-left: 0;
    margin-top: 1rem;
  }
  
  .grid-4-activities {
    grid-template-columns: 1fr;
  }
  
  .grid-3-col {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonial-section {
    flex-direction: column;
    text-align: center;
    padding: 2rem 1.5rem;
  }
  
  .article-container {
    padding: 1.75rem 1.25rem;
  }
  
  .hero-overlay-card {
    padding: 1.75rem 1.25rem;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .article-inline-image-frame img {
    height: 260px;
  }
}