/* ==========================================================================
   ONEM OBSERVATOIRE NATURALISTE DES ECOSYSTEMES MEDITERRANEES
   Design System & Master Stylesheet - Association Loi 1901
   ========================================================================== */

:root {
  --charcoal: #1C1A17;
  --charcoal-light: #2D2A26;
  --earth-ocher: #C87D55;
  --earth-ocher-dark: #A6613C;
  --earth-ocher-light: #E8B496;
  --alabaster: #F9F6F0;
  --card-bg: #FFFFFF;
  --border-color: #D9D2C9;
  --border-light: #EBE6DF;
  --text-muted: #5C5852;
  --font-serif: "Georgia", "Playfair Display", "Times New Roman", serif;
  --font-mono: "Courier New", Courier, 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(--alabaster);
  color: var(--charcoal);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  background-color: var(--alabaster);
  color: var(--charcoal);
  padding-top: var(--header-height);
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   READING PROGRESS BAR
   ========================================================================== */
#reading-progress-container {
  position: fixed;
  right: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: rgba(200, 125, 85, 0.2);
  z-index: 10001;
}

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

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

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;
  box-shadow: 0 2px 10px rgba(28, 26, 23, 0.08);
}

/* Row 1: Utility Bar */
.utility-bar {
  background-color: var(--charcoal);
  color: var(--alabaster);
  height: 38px;
  font-family: var(--font-mono);
  font-size: 13px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.utility-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.utility-meta {
  display: flex;
  gap: 20px;
  align-items: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.utility-badge {
  background: var(--earth-ocher);
  color: #fff;
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 11px;
  font-weight: bold;
}

.utility-link {
  color: var(--earth-ocher-light);
  text-decoration: none;
  transition: color 0.2s;
  white-space: nowrap;
}

.utility-link:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

/* Row 2: Main Navigation */
.main-nav-bar {
  background-color: #FFFFFF;
  height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.main-nav-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

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

.brand-emblem {
  width: 44px;
  height: 44px;
  background-color: var(--charcoal);
  border: 2px solid var(--earth-ocher);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-weight: bold;
  font-size: 16px;
  letter-spacing: 1px;
}

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

.brand-acronym {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.1;
  color: var(--charcoal);
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-block;
  padding: 10px 14px;
  color: var(--charcoal);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.2s ease;
  border-radius: 3px;
  min-height: 44px;
  line-height: 24px;
}

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

.nav-link.active {
  color: var(--earth-ocher-dark);
  border-bottom: 2px solid var(--earth-ocher);
}

/* Dropdown styling */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #FFFFFF;
  min-width: 220px;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(28, 26, 23, 0.12);
  border-radius: 0 0 4px 4px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: all 0.2s ease;
  z-index: 1000;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown li a {
  display: block;
  padding: 11px 18px;
  color: var(--charcoal);
  text-decoration: none;
  font-size: 13.5px;
  border-bottom: 1px solid var(--border-light);
  transition: all 0.15s ease;
}

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

.nav-dropdown li a:hover {
  background-color: var(--alabaster);
  color: var(--earth-ocher);
  padding-left: 22px;
}

/* Header Action Button */
.btn-cta-header {
  background-color: var(--earth-ocher);
  color: #FFFFFF !important;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: bold;
  padding: 9px 18px;
  border-radius: 3px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background 0.2s ease;
  white-space: nowrap;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

/* Mobile Hamburger Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 12px;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--charcoal);
  margin: 4px 0;
  transition: 0.2s;
}

/* ==========================================================================
   LAYOUT STRUCTURES & GRIDS
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-wrapper {
  flex: 1 0 auto;
  padding: 40px 0 60px 0;
}

/* Asymmetrical Grid: 1fr 3fr */
.asym-grid {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 32px;
  align-items: start;
}

.sidebar-logs {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
}

.sidebar-title {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: bold;
  text-transform: uppercase;
  color: var(--earth-ocher-dark);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.sidebar-log-item {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border-light);
}

.sidebar-log-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-log-label {
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 2px;
}

.sidebar-log-value {
  color: var(--charcoal);
  font-weight: 600;
  word-break: break-word;
}

.main-content-flow {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ==========================================================================
   CONTENT CARDS & TYPOGRAPHY
   ========================================================================== */
.content-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 36px;
  box-shadow: 0 1px 3px rgba(28, 26, 23, 0.04);
}

.content-card-compact {
  padding: 24px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--charcoal);
  line-height: 1.25;
  margin-bottom: 16px;
  font-weight: 700;
}

h1 {
  font-size: 2.25rem;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 1.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
  margin-top: 12px;
}

h3 {
  font-size: 1.35rem;
  color: var(--charcoal-light);
}

p {
  margin-bottom: 18px;
  color: var(--charcoal);
  max-width: 75ch;
}

.lead-p {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--charcoal-light);
  border-left: 3px solid var(--earth-ocher);
  padding-left: 18px;
  margin-bottom: 24px;
}

.meta-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background-color: var(--alabaster);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: 2px;
  color: var(--earth-ocher-dark);
}

/* Non-Profit Declaration Box */
.non-profit-banner {
  background: #FFFFFF;
  border-left: 4px solid var(--earth-ocher);
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 24px;
  margin-bottom: 30px;
  font-size: 0.95rem;
}

.non-profit-banner strong {
  color: var(--earth-ocher-dark);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 6px;
}

/* ==========================================================================
   IMAGE GALLERIES & MEDIA
   ========================================================================== */
.image-showcase {
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
  background-color: #000;
}

.image-showcase img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 480px;
}

.image-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 28px;
}

.image-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.image-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.image-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-color);
}

.image-card-body {
  padding: 18px;
  flex: 1;
}

.image-card-body h4 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.image-card-body p {
  font-size: 0.9rem;
  margin-bottom: 0;
  color: var(--text-muted);
}

/* ==========================================================================
   STATISTICAL & IMPACT DATA GRIDS
   ========================================================================== */
.impact-numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 28px 0;
}

.impact-stat-box {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 24px 18px;
  text-align: center;
  border-radius: 4px;
}

.impact-stat-number {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: bold;
  color: var(--earth-ocher);
  line-height: 1;
  margin-bottom: 8px;
}

.impact-stat-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  color: var(--charcoal);
  letter-spacing: 0.5px;
}

/* ==========================================================================
   TABLES & ACCOUNTING LEDGERS
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 20px 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13px;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
}

.data-table th, .data-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  text-align: left;
}

.data-table th {
  background-color: var(--charcoal);
  color: var(--alabaster);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 12px;
}

.data-table tbody tr:nth-child(even) {
  background-color: var(--alabaster);
}

.data-table tbody tr:hover {
  background-color: rgba(200, 125, 85, 0.08);
}

.data-table tfoot {
  font-weight: bold;
  background-color: #F1ECE3;
}

/* ==========================================================================
   BUTTONS & ACTION ELEMENTS
   ========================================================================== */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 24px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none;
  border-radius: 3px;
  min-height: 44px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

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

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

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

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

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

.btn-outline:hover {
  background-color: var(--charcoal);
  color: #FFFFFF;
}

/* ==========================================================================
   FORMS & INPUT FIELDS
   ========================================================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--charcoal);
  text-transform: uppercase;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  background-color: #FFFFFF;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--charcoal);
  transition: border-color 0.2s;
  min-height: 44px;
}

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

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ==========================================================================
   HERO SLIDER (VANILLA JS)
   ========================================================================== */
.hero-slider-wrapper {
  position: relative;
  width: 100%;
  max-height: 520px;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  margin-bottom: 36px;
  background-color: var(--charcoal);
}

.hero-slide {
  display: none;
  position: relative;
  width: 100%;
}

.hero-slide.active {
  display: block;
}

.hero-slide img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  display: block;
  filter: brightness(0.85);
}

.hero-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 36px;
  background: linear-gradient(to top, rgba(28, 26, 23, 0.9) 0%, rgba(28, 26, 23, 0.4) 70%, transparent 100%);
  color: #FFFFFF;
}

.hero-caption h1, .hero-caption h2 {
  color: #FFFFFF;
  margin-bottom: 10px;
}

.hero-caption p {
  color: #F9F6F0;
  font-size: 1.05rem;
  max-width: 80ch;
  margin-bottom: 0;
}

.slider-controls {
  position: absolute;
  bottom: 20px;
  right: 24px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

.slider-btn {
  background: rgba(28, 26, 23, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #FFFFFF;
  width: 44px;
  height: 44px;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 16px;
  transition: 0.2s;
}

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

/* ==========================================================================
   FOOTER ARCHITECTURE
   ========================================================================== */
.site-footer {
  background-color: var(--charcoal);
  color: var(--alabaster);
  border-top: 3px solid var(--earth-ocher);
  padding: 50px 0 30px 0;
  margin-top: auto;
}

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

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.15rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

.footer-col p {
  color: #D9D2C9;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #D9D2C9;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--earth-ocher-light);
  text-decoration: underline;
}

.footer-declaration {
  background-color: #141210;
  border: 1px solid rgba(200, 125, 85, 0.3);
  padding: 20px 24px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: #C2BBB2;
  margin-bottom: 24px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #8C867F;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: var(--earth-ocher-light);
  text-decoration: none;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (BREAKPOINTS: 992px, 768px)
   ========================================================================== */
@media (max-width: 992px) {
  :root {
    --header-height: 100px;
  }

  .utility-bar {
    font-size: 11.5px;
  }

  .utility-meta span:nth-child(2) {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #FFFFFF;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    border-bottom: 2px solid var(--earth-ocher);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    max-height: 80vh;
    overflow-y: auto;
    gap: 0;
  }

  .nav-menu.show {
    display: flex;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--border-light);
  }

  .nav-link {
    width: 100%;
    padding: 12px 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    transform: none;
    background-color: var(--alabaster);
    padding: 6px 14px;
    margin-bottom: 10px;
    border-left: 2px solid var(--earth-ocher);
  }

  .nav-dropdown li a {
    padding: 8px 12px;
    font-size: 13px;
  }

  .btn-cta-header {
    margin-top: 14px;
    width: 100%;
    justify-content: center;
  }

  /* Break down Asymmetrical Grid to single column */
  .asym-grid {
    grid-template-columns: 1fr !important;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 94px;
  }

  body {
    padding-top: var(--header-height);
  }

  .utility-bar {
    height: 32px;
  }

  .utility-bar .container {
    justify-content: center;
  }

  .utility-meta {
    font-size: 11px;
  }

  .main-nav-bar {
    height: 62px;
  }

  .brand-acronym {
    font-size: 15px;
  }

  .brand-tagline {
    font-size: 9.5px;
  }

  .content-card {
    padding: 22px 18px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.45rem;
  }

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

  .impact-numbers-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}