/* ==========================================================================
   BIBLIOTHÈQUE DIOCÉSAINE DE MONTPELLIER - DESIGN SYSTEM (LOI 1901)
   Architecture Typographique, Grilles Asymétriques & Utilité Publique
   Palette: Raw Charcoal (#1C1A17), Earth Ocher (#C87D55), Alabaster (#F9F6F0)
   ========================================================================== */

:root {
  --color-charcoal: #1C1A17;
  --color-ocher: #C87D55;
  --color-ocher-hover: #AF6A45;
  --color-ocher-light: rgba(200, 125, 85, 0.12);
  --color-alabaster: #F9F6F0;
  --color-white: #FFFFFF;
  --color-border: #D9D2C9;
  --color-border-dark: #A8A196;
  --color-muted: #57524A;
  --font-serif: "Georgia", "Baskerville", "Palatino", serif;
  --font-mono: "Courier New", Courier, "Lucida Console", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --header-height: 110px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-alabaster);
  color: var(--color-charcoal);
  font-family: var(--font-sans);
  line-height: 1.6;
}

body {
  min-height: 100vh;
  padding-top: var(--header-height);
  background-color: var(--color-alabaster);
  color: var(--color-charcoal);
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   READING PROGRESS STRIP
   ========================================================================== */
#reading-progress-track {
  position: fixed;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  background: rgba(200, 125, 85, 0.2);
  z-index: 10001;
  pointer-events: none;
}

#reading-progress-bar {
  width: 100%;
  height: 0%;
  background: var(--color-ocher);
  transition: height 0.08s linear;
}

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

/* ==========================================================================
   STICKY DOUBLE-DECKER HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(28, 26, 23, 0.04);
}

/* Row 1: Utility Bar */
.utility-bar {
  background: var(--color-charcoal);
  color: var(--color-alabaster);
  min-height: 38px;
  font-family: var(--font-mono);
  font-size: 12px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 4px 0;
}

.utility-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  flex-wrap: wrap;
  gap: 8px;
}

.utility-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.utility-label {
  color: var(--color-ocher);
  font-weight: bold;
}

.utility-link {
  color: var(--color-alabaster);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
}

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

/* Row 2: Main Navigation */
.main-nav {
  height: 72px;
  display: flex;
  align-items: center;
  background: var(--color-white);
}

.main-nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.brand-identity {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--color-charcoal);
}

.brand-emblem {
  width: 44px;
  height: 44px;
  background: var(--color-charcoal);
  color: var(--color-alabaster);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: bold;
  border: 1px solid var(--color-ocher);
  letter-spacing: -0.5px;
}

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

.brand-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--color-charcoal);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.8px;
  color: var(--color-muted);
  text-transform: uppercase;
}

/* Navigation Menu */
.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 6px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  min-height: 44px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-charcoal);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  transition: color 0.2s ease, background-color 0.2s ease;
  border-radius: 2px;
}

.nav-link:hover, .nav-item:hover > .nav-link {
  color: var(--color-ocher);
  background-color: var(--color-alabaster);
}

.nav-arrow {
  font-size: 10px;
  margin-left: 5px;
  color: var(--color-muted);
}

/* Dropdowns */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 24px rgba(28, 26, 23, 0.08);
  list-style: none;
  padding: 8px 0;
  display: none;
  z-index: 10002;
}

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

.dropdown-link {
  display: block;
  padding: 10px 18px;
  min-height: 44px;
  font-size: 13px;
  color: var(--color-charcoal);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 210, 201, 0.3);
  font-family: var(--font-sans);
  font-weight: 500;
  transition: all 0.15s ease;
}

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

.dropdown-link:hover {
  background-color: var(--color-alabaster);
  color: var(--color-ocher);
  padding-left: 22px;
}

.nav-btn {
  background: var(--color-ocher);
  color: var(--color-white) !important;
  padding: 10px 20px;
  font-weight: 600;
  border-radius: 2px;
  border: 1px solid var(--color-ocher);
  transition: all 0.2s ease;
}

.nav-btn:hover {
  background: var(--color-ocher-hover) !important;
  color: var(--color-white) !important;
  box-shadow: 0 2px 6px rgba(200, 125, 85, 0.3);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-charcoal);
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   PAGE LAYOUT & ASYMMETRICAL GRID
   ========================================================================== */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-intro {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.page-title {
  font-family: var(--font-serif);
  font-size: 38px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 14px;
}

.page-lead {
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-muted);
  max-width: 850px;
}

/* Asymmetrical Grid: 1fr 3fr */
.asym-grid {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 36px;
  margin-bottom: 60px;
}

.sidebar-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 24px;
  height: fit-content;
  position: sticky;
  top: 130px;
}

.sidebar-title {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  color: var(--color-ocher);
  letter-spacing: 1px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
  margin-bottom: 16px;
  font-weight: 700;
}

.sidebar-log {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.sidebar-log-item {
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.sidebar-log-key {
  color: var(--color-charcoal);
  font-weight: bold;
}

.sidebar-log-val {
  color: var(--color-muted);
  word-break: break-word;
}

.sidebar-menu {
  list-style: none;
  margin-top: 16px;
}

.sidebar-menu-item {
  border-bottom: 1px solid rgba(217, 210, 201, 0.4);
}

.sidebar-menu-link {
  display: block;
  padding: 10px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-charcoal);
  text-decoration: none;
  transition: color 0.15s;
}

.sidebar-menu-link:hover {
  color: var(--color-ocher);
}

.main-content {
  min-width: 0;
}

/* ==========================================================================
   CARDS, CONTAINERS & TYPOGRAPHY
   ========================================================================== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 32px;
  margin-bottom: 32px;
}

.card-accent {
  border-left: 4px solid var(--color-ocher);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--color-charcoal);
  margin-bottom: 16px;
  line-height: 1.3;
}

.card-subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--color-ocher);
  letter-spacing: 0.8px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 18px;
  line-height: 1.7;
}

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

.highlight-box {
  background: var(--color-alabaster);
  border: 1px solid var(--color-border);
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 15px;
}

.highlight-box-title {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--color-ocher);
  font-weight: bold;
  margin-bottom: 8px;
}

/* Data Tables */
.data-table-wrapper {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--color-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--color-white);
  text-align: left;
}

.data-table th {
  background: var(--color-charcoal);
  color: var(--color-alabaster);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-charcoal);
}

.data-table tr:nth-child(even) td {
  background: #FCFAF7;
}

.data-table tr:hover td {
  background: rgba(200, 125, 85, 0.05);
}

/* ==========================================================================
   BUTTONS & CALLS TO ACTION (NON-COMMERCIAL)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  min-height: 44px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-align: center;
  line-height: 1;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-charcoal);
  border-color: var(--color-charcoal);
}

.btn-secondary:hover {
  background: var(--color-charcoal);
  color: var(--color-alabaster);
}

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

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

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 24px 0;
}

/* ==========================================================================
   IMAGE ARCHITECTURE
   ========================================================================== */
.img-container {
  width: 100%;
  margin-bottom: 24px;
  border: 1px solid var(--color-border);
  background: var(--color-charcoal);
  position: relative;
  overflow: hidden;
}

.img-container img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.img-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 24px 0;
}

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

/* ==========================================================================
   HOMEPAGE SPECIFIC (HERO SLIDER & PILLARS)
   ========================================================================== */
.hero-wrapper {
  position: relative;
  background: var(--color-charcoal);
  color: var(--color-alabaster);
  margin-bottom: 48px;
  border-bottom: 2px solid var(--color-ocher);
}

.hero-slider-track {
  position: relative;
  width: 100%;
  min-height: 480px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  background-size: cover;
  background-position: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(28, 26, 23, 0.94) 35%, rgba(28, 26, 23, 0.65) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: 60px 0;
}

.hero-badge {
  display: inline-block;
  background: var(--color-ocher);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.15;
  color: #FFFFFF;
  margin-bottom: 16px;
  font-weight: 700;
}

.hero-summary-2sent {
  font-size: 18px;
  line-height: 1.6;
  color: #E6E1DA;
  margin-bottom: 24px;
  border-left: 3px solid var(--color-ocher);
  padding-left: 18px;
  font-weight: 400;
}

.hero-slider-controls {
  position: absolute;
  bottom: 20px;
  right: 24px;
  z-index: 3;
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 32px;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.slider-dot.active {
  background: var(--color-ocher);
}

/* Impact Metrics Strip */
.metrics-strip {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 32px;
  margin: 40px 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.metric-item {
  border-right: 1px solid var(--color-border);
  padding: 0 16px;
}

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

.metric-number {
  font-family: var(--font-serif);
  font-size: 36px;
  color: var(--color-ocher);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 6px;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--color-charcoal);
  letter-spacing: 0.5px;
}

/* Core Pillars Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin: 32px 0 48px;
}

.pillar-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.pillar-img-wrapper {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

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

.pillar-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-ocher);
  font-weight: bold;
  margin-bottom: 8px;
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--color-charcoal);
}

.pillar-body p {
  font-size: 14px;
  color: var(--color-muted);
  flex: 1;
  margin-bottom: 16px;
}

/* ==========================================================================
   FORMS (BENEVOLAT, CONTACT)
   ========================================================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-charcoal);
  font-weight: bold;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-charcoal);
  border-radius: 2px;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-ocher);
  box-shadow: 0 0 0 2px var(--color-ocher-light);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-notice {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  margin-top: 8px;
}

/* ==========================================================================
   FOOTER ARCHITECTURE
   ========================================================================== */
.site-footer {
  background: var(--color-charcoal);
  color: var(--color-alabaster);
  border-top: 3px solid var(--color-ocher);
  padding-top: 50px;
  font-size: 14px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  color: var(--color-ocher);
  letter-spacing: 1px;
  margin-bottom: 18px;
  font-weight: 700;
}

.footer-desc {
  color: #C5BFB7;
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-meta-block {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #9C958C;
  line-height: 1.7;
}

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

.footer-link-item {
  margin-bottom: 10px;
}

.footer-link {
  color: #D9D2C9;
  text-decoration: none;
  font-size: 13px;
  transition: color 0.15s;
}

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

/* Mandatory Disclosure Row */
.footer-disclosure {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 28px 0;
  text-align: center;
}

.disclosure-text {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.7;
  color: #BDB7AD;
  max-width: 1000px;
  margin: 0 auto 16px;
}

.disclosure-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
}

.disclosure-links a {
  color: var(--color-ocher);
  text-decoration: underline;
}

/* ==========================================================================
   RESPONSIVENESS (992px & 768px)
   ========================================================================== */
@media (max-width: 992px) {
  :root {
    --header-height: 98px;
  }
  body {
    padding-top: var(--header-height);
  }
  .utility-bar {
    font-size: 11px;
  }
  .mobile-toggle {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 0;
    border-top: 1px solid var(--color-border);
    overflow-y: auto;
    display: none;
    z-index: 9999;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-link {
    padding: 14px 12px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-dropdown {
    position: static;
    display: block;
    box-shadow: none;
    border: none;
    padding-left: 16px;
    background: var(--color-alabaster);
  }
  .dropdown-link {
    padding: 12px;
    font-size: 13px;
  }
  .asym-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .sidebar-panel {
    position: static;
  }
  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-item:nth-child(2) {
    border-right: none;
  }
  .metric-item:nth-child(3) {
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
  }
  .metric-item:nth-child(4) {
    border-top: 1px solid var(--color-border);
    border-right: none;
    padding-top: 16px;
  }
  .pillars-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 125px;
  }
  .utility-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-title {
    font-size: 28px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-summary-2sent {
    font-size: 15px;
  }
  .hero-content {
    padding: 36px 0;
  }
  .metrics-strip {
    grid-template-columns: 1fr;
  }
  .metric-item {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: 14px 0;
  }
  .metric-item:last-child {
    border-bottom: none;
  }
  .img-grid-2, .img-grid-4 {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 20px;
  }
}