/* ==========================================================================
   LECTURE ET CULTURE - Master Design System Stylesheet
   Pure CSS Grid, Flexbox, Responsive Breakpoints & Semantic Typography
   Compliant with Google Ad Grants Non-Profit Standards & Accessibility
   ========================================================================== */

:root {
  --color-raw-charcoal: #1C1A17;
  --color-earth-ocher: #C87D55;
  --color-earth-ocher-hover: #B26B44;
  --color-alabaster-bg: #F9F6F0;
  --color-surface-white: #FFFFFF;
  --color-border-subtle: #D9D2C9;
  --color-border-light: #E5E7EB;
  --color-text-main: #2B2823;
  --color-text-muted: #5C564E;
  --color-slate-caption: #64748B;
  --color-green-accent: #2E5C43;
  --color-amber-bg: #F5EBE1;

  --font-serif: "Georgia", "Cambria", "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --shadow-sm: 0 2px 6px rgba(28, 26, 23, 0.04);
  --shadow-md: 0 6px 20px rgba(28, 26, 23, 0.06);
  --shadow-lg: 0 12px 30px rgba(28, 26, 23, 0.08);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-alabaster-bg);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Dynamic Reading Progress Bar */
#reading-progress-bar {
  position: fixed;
  top: 0;
  right: 0;
  width: 4px;
  height: 0%;
  background: var(--color-earth-ocher);
  box-shadow: 0 0 8px rgba(200, 125, 85, 0.5);
  z-index: 9999;
  transition: height 0.08s ease-out;
}

@media (max-width: 992px) {
  #reading-progress-bar {
    display: none !important;
  }
}

/* ==========================================================================
   HEADER NAVIGATION ARCHITECTURE
   ========================================================================== */

/* Row 1: Administrative Utility Bar */
.utility-bar {
  background-color: #1C1A17;
  color: #F9F6F0;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.utility-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.utility-identifiers {
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.02em;
}

.utility-divider {
  opacity: 0.4;
}

.utility-link {
  color: #F9F6F0;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.utility-link:hover {
  color: var(--color-earth-ocher);
}

/* Ethical Non-Profit Reinvestment Strip */
.reinvestment-strip {
  background-color: var(--color-amber-bg);
  border-bottom: 1px solid var(--color-border-subtle);
  padding: 8px 0;
  font-size: 0.875rem;
}

.reinvestment-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
}

.reinvestment-symbol {
  color: var(--color-earth-ocher);
  font-size: 1.1rem;
}

.reinvestment-text {
  color: var(--color-text-main);
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Row 2: Sticky Header Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-raw-charcoal);
}

.brand-icon {
  font-size: 1.8rem;
  line-height: 1;
}

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

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-raw-charcoal);
  line-height: 1.2;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Primary Navigation Menu */
.primary-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 6px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  color: var(--color-text-main);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--color-earth-ocher);
  background-color: rgba(200, 125, 85, 0.08);
}

.nav-link.active {
  color: var(--color-earth-ocher);
  font-weight: 700;
  background-color: rgba(200, 125, 85, 0.12);
  border-bottom: 2px solid var(--color-earth-ocher);
}

/* Non-commercial CTA Button in Navigation */
.nav-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 0 20px;
  background-color: var(--color-raw-charcoal);
  color: #FFFFFF !important;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-raw-charcoal);
  transition: all 0.2s ease;
  cursor: pointer;
}

.nav-cta-button:hover,
.nav-cta-button.active {
  background-color: var(--color-earth-ocher);
  border-color: var(--color-earth-ocher);
  color: #FFFFFF !important;
  box-shadow: 0 4px 12px rgba(200, 125, 85, 0.25);
}

/* Mobile Hamburger Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-raw-charcoal);
  transition: all 0.25s ease;
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

.nav-toggle.is-open .nav-toggle-icon {
  background-color: transparent;
}

.nav-toggle.is-open .nav-toggle-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle.is-open .nav-toggle-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

/* ==========================================================================
   LAYOUT, GRID & TYPOGRAPHY
   ========================================================================== */

main {
  flex: 1 0 auto;
}

.content-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 60px 24px;
}

.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 24px 80px 24px;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-raw-charcoal);
  line-height: 1.3;
  margin-bottom: 18px;
}

h1 {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.85rem;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-subtle);
}

h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 18px;
  color: var(--color-text-main);
  font-size: 1.05rem;
}

ul, ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
  font-size: 1.02rem;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(180deg, #FFFFFF 0%, var(--color-alabaster-bg) 100%);
  border-bottom: 1px solid var(--color-border-subtle);
  padding: 48px 0 54px 0;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background-color: var(--color-amber-bg);
  color: var(--color-earth-ocher);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 14px;
  border: 1px solid rgba(200, 125, 85, 0.2);
}

.hero-headline {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
  color: var(--color-raw-charcoal);
}

.hero-summary-box {
  background-color: #FFFFFF;
  border-left: 4px solid var(--color-earth-ocher);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 24px;
  margin: 20px 0 28px 0;
  box-shadow: var(--shadow-sm);
  border-top: 1px solid var(--color-border-subtle);
  border-right: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.hero-summary-text {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--color-raw-charcoal);
  margin-bottom: 0;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 24px;
}

/* Explicit Mission Block (Exact 120+ words callout) */
.mission-callout {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-subtle);
  border-left: 5px solid var(--color-earth-ocher);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin: 36px 0;
  box-shadow: var(--shadow-sm);
}

.mission-callout-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-raw-charcoal);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.mission-callout-text {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--color-text-main);
  margin-bottom: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-raw-charcoal);
  color: #FFFFFF;
  border: 1px solid var(--color-raw-charcoal);
}

.btn-primary:hover {
  background-color: var(--color-earth-ocher);
  border-color: var(--color-earth-ocher);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--color-raw-charcoal);
  border: 1px solid var(--color-border-subtle);
}

.btn-secondary:hover {
  border-color: var(--color-earth-ocher);
  color: var(--color-earth-ocher);
  background-color: var(--color-amber-bg);
}

.btn-ocher {
  background-color: var(--color-earth-ocher);
  color: #FFFFFF;
  border: 1px solid var(--color-earth-ocher);
}

.btn-ocher:hover {
  background-color: var(--color-earth-ocher-hover);
}

/* Documentary Photography Rules & Figcaption */
.documentary-figure {
  margin: 28px 0;
  display: block;
}

.documentary-photo {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid #E5E7EB;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  margin: 20px 0 8px 0;
  object-fit: cover;
  display: block;
  max-height: 480px;
}

.documentary-photo.hero-photo {
  max-height: 520px;
}

.documentary-caption {
  font-family: var(--font-sans);
  font-style: italic;
  font-size: 0.875rem;
  color: #64748B;
  margin-bottom: 20px;
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: 8px;
}

.documentary-caption::before {
  content: "—";
  color: var(--color-earth-ocher);
  font-style: normal;
}

/* Card Grids */
.grid-cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0;
}

.grid-cards-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin: 32px 0;
}

.grid-cards-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.content-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.content-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  line-height: 1;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-raw-charcoal);
}

.card-desc {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

/* Verified Metrics & Stats Strip */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  margin: 36px 0;
  box-shadow: var(--shadow-sm);
}

.stat-item {
  text-align: center;
  padding: 10px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-earth-ocher);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Interactive Timetable & Data Tables */
.data-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: #FFFFFF;
}

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

.data-table th, .data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.data-table th {
  background-color: var(--color-amber-bg);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-raw-charcoal);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background-color: #FAF8F5;
}

/* Forms & Inputs */
.form-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  margin: 32px 0;
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-raw-charcoal);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text-main);
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-textarea {
  min-height: 130px;
  resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-earth-ocher);
  box-shadow: 0 0 0 3px rgba(200, 125, 85, 0.15);
}

.form-hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 6px;
  display: block;
}

/* Modal Popup System */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(28, 26, 23, 0.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 20px;
}

.modal-overlay.is-active {
  display: flex;
  animation: fadeIn 0.2s ease-out;
}

.modal-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 100%;
  padding: 36px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-subtle);
  position: relative;
  text-align: center;
}

.modal-icon {
  font-size: 3rem;
  color: var(--color-green-accent);
  margin-bottom: 14px;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-raw-charcoal);
  margin-bottom: 12px;
}

.modal-body {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

.modal-close-btn {
  background-color: var(--color-raw-charcoal);
  color: #FFFFFF;
  border: none;
  padding: 10px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
}

.modal-close-btn:hover {
  background-color: var(--color-earth-ocher);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ==========================================================================
   FOOTER NAVIGATION ARCHITECTURE
   ========================================================================== */

.site-footer {
  background-color: #1C1A17;
  color: #F9F6F0;
  margin-top: auto;
  border-top: 3px solid var(--color-earth-ocher);
}

.footer-top-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 40px 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: #F9F6F0;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
  padding-left: 0;
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #D9D2C9;
  text-decoration: none;
  font-size: 0.95rem;
  display: inline-block;
  min-height: 36px;
  line-height: 36px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-earth-ocher);
  transform: translateX(4px);
}

.footer-col-desc {
  font-size: 0.88rem;
  color: #A39D93;
  line-height: 1.6;
}

.footer-contact-brief {
  font-size: 0.88rem;
  color: #A39D93;
  line-height: 1.8;
}

.footer-contact-brief a {
  color: #F9F6F0;
  text-decoration: underline;
}

.footer-compliance-section {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 32px 0 24px 0;
  background-color: #141210;
}

.compliance-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-disclosure-statement {
  font-size: 0.88rem;
  color: #C5BFB5;
  line-height: 1.6;
  margin-bottom: 18px;
  border-left: 3px solid var(--color-earth-ocher);
  padding-left: 14px;
}

.footer-registry-details {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #8C867C;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.footer-registry-details strong {
  color: #F9F6F0;
}

.footer-copyright-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 18px;
  font-size: 0.82rem;
  color: #8C867C;
}

.copyright-line {
  margin-bottom: 0;
}

.footer-sublink {
  color: #D9D2C9;
  text-decoration: underline;
}

.footer-sublink:hover {
  color: var(--color-earth-ocher);
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Mobile Media Queries)
   ========================================================================== */

@media (max-width: 992px) {
  .site-header {
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #FFFFFF;
    border-bottom: 2px solid var(--color-border-subtle);
    box-shadow: var(--shadow-lg);
    padding: 16px 24px 24px 24px;
  }

  .primary-nav.is-open {
    display: block;
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .nav-cta-button {
    width: 100%;
    margin-top: 10px;
  }

  .grid-cards-3,
  .grid-cards-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-top-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.1rem;
  }

  h2 {
    font-size: 1.55rem;
  }

  .grid-cards-2,
  .grid-cards-3,
  .grid-cards-4 {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .utility-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .footer-copyright-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}