@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

/* DESIGN TOKENS */
:root {
  --bg-primary: #FAF8F5; /* Warm natural sand background */
  --bg-secondary: #FFFFFF; /* Pure white for clean surface layers */
  --text-primary: #1F2522; /* Warm forest-black */
  --text-secondary: #5A6961; /* Soft moss-charcoal */
  --accent-primary: #2A4D3D; /* Deep organic forest green */
  --accent-primary-hover: #1E372B;
  --accent-primary-rgb: 42, 77, 61;
  --accent-secondary: #C0925B; /* Elegant warm amber-gold */
  --accent-secondary-hover: #A67B47;
  --border-color: rgba(42, 77, 61, 0.08);
  --border-color-hover: rgba(42, 77, 61, 0.16);
  --shadow-sm: 0 4px 6px -1px rgba(42, 77, 61, 0.03), 0 2px 4px -1px rgba(42, 77, 61, 0.02);
  --shadow-md: 0 12px 24px -4px rgba(42, 77, 61, 0.05), 0 4px 12px -2px rgba(42, 77, 61, 0.03);
  --shadow-lg: 0 24px 48px -8px rgba(42, 77, 61, 0.08), 0 8px 24px -4px rgba(42, 77, 61, 0.04);
  
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 30px;
  
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-editorial: 'Playfair Display', Georgia, serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* GENERAL STYLING & RESET */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: 80px; /* Offset for fixed header */
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

/* HEADER & FLOATING NAVIGATION */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.nav-container {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  color: var(--accent-primary);
}

.site-logo span {
  color: var(--accent-secondary);
}

.nav-menu {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-link {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-primary);
  opacity: 0.85;
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-primary);
  transition: var(--transition-smooth);
}

.nav-link:hover {
  opacity: 1;
  color: var(--accent-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--accent-primary);
  opacity: 1;
}

/* MOBILE NAV TOGGLE (CSS Only Drawer or Responsive Top Menu) */
.mobile-toggle {
  display: none;
}

/* PAGE WRAPPER / CONTAINER */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

/* HERO SECTIONS */
.hero {
  text-align: center;
  padding: 64px 0 48px;
  max-width: 800px;
  margin: 0 auto 40px;
}

.hero-subtitle {
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-secondary);
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: 3.5rem;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
}

/* CARDS & GRIDS SYSTEM */
.grid-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.category-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-spring);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--accent-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-smooth);
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-color-hover);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card .icon {
  font-size: 2.2rem;
  color: var(--accent-primary);
  margin-bottom: 20px;
}

.category-card h3 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.category-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  flex-grow: 1;
  margin-bottom: 24px;
}

.card-link {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: var(--transition-smooth);
}

.category-card:hover .card-link svg {
  transform: translateX(4px);
}

/* BIRDS INDEX DIRECTORY GRID */
.birds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 32px;
}

.bird-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-spring);
  display: flex;
  flex-direction: column;
}

.bird-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-color-hover);
}

.bird-card-image-wrap {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: #EBE6DF;
  position: relative;
}

.bird-card-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-spring);
}

.bird-card:hover .bird-card-image-wrap img {
  transform: scale(1.05);
}

.bird-card-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.bird-card-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.bird-card-scientific {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 12px;
}

.bird-card-description {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

/* BIRD DETAIL LAYOUT */
.back-btn-wrap {
  margin-bottom: 32px;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-title);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.95rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.back-btn:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateX(-4px);
}

.detail-hero {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 48px;
}

.detail-hero-content h1 {
  font-family: var(--font-editorial);
  font-size: 3.2rem;
  line-height: 1.1;
  margin-bottom: 6px;
}

.detail-hero-content .scientific-name {
  font-family: var(--font-title);
  font-style: italic;
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--accent-primary);
  margin-bottom: 24px;
}

.ebird-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(192, 146, 91, 0.08);
  border: 1px solid rgba(192, 146, 91, 0.25);
  color: var(--accent-secondary);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.detail-hero-content .intro-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.detail-hero-image-wrap {
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background-color: #EBE6DF;
}

.detail-hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* eBIRDS ECOLOGY FACTS GRID */
.ecology-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}

.ecology-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.ecology-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(42, 77, 61, 0.16);
}

.ecology-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent-primary);
}

.ecology-card-header svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent-primary);
  fill: none;
  stroke-width: 2px;
}

.ecology-card p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* SECTION HEADERS */
.section-title-wrap {
  margin-bottom: 32px;
  border-left: 4px solid var(--accent-primary);
  padding-left: 16px;
}

.section-title {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* IMAGE GALLERIES */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.gallery-item {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #EBE6DF;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-spring);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(42, 77, 61, 0.15);
  opacity: 0;
  transition: var(--transition-smooth);
}

.gallery-item:hover::after {
  opacity: 1;
}

/* WINTER FLORA TABS & PAGINATION */
.flora-banner {
  background: linear-gradient(135deg, rgba(42, 77, 61, 0.04) 0%, rgba(192, 146, 91, 0.04) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 48px;
  text-align: center;
}

.flora-banner h2 {
  font-family: var(--font-editorial);
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.flora-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 64px;
}

.flora-item-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.flora-item-card h3 {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 4px;
}

.flora-item-card .latin {
  font-style: italic;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.flora-item-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
}

.pagination-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.pagination-btn:hover:not(:disabled) {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-num-indicator {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 0.95rem;
}

/* WILD KUMAON NATURALIST CHECKLIST */
.wild-search-wrap {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.wild-search-input {
  flex-grow: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  outline: none;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.wild-search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(42, 77, 61, 0.1);
}

.wild-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-chip {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 8px 18px;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-chip:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.filter-chip.active {
  background: var(--accent-primary);
  color: var(--bg-secondary);
  border-color: var(--accent-primary);
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.checklist-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

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

.checklist-card .scientific {
  font-style: italic;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.checklist-card .badge {
  align-self: flex-start;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(42, 77, 61, 0.06);
  color: var(--accent-primary);
}

/* FOOTER */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 48px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h4 {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--accent-primary);
  margin-bottom: 12px;
}

.footer-brand p {
  max-width: 320px;
}

.footer-links h5, .footer-contact h5 {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

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

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

.footer-links a:hover {
  color: var(--accent-primary);
  padding-left: 4px;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* LIGHTBOX MODAL FOR IMAGES */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(31, 37, 34, 0.95);
  z-index: 2000;
  display: none;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
}

/* ============================================
   TECH NOTES DROPDOWN NAVIGATION
   ============================================ */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > .nav-link::after {
  display: none; /* Hide the underline for the dropdown trigger */
}

.nav-dropdown > .nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
}

.nav-dropdown > .nav-link .caret {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: var(--transition-smooth);
  opacity: 0.7;
}

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

.dropdown-menu {
  display: block;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: 240px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 10px 0;
  transform: translateY(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
  z-index: 2000;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s;
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: var(--transition-smooth);
  border-radius: 0;
}

.dropdown-menu a:hover {
  background: var(--bg-primary);
  color: var(--accent-secondary);
  padding-left: 26px;
}

.dropdown-menu-header {
  padding: 6px 20px 10px;
  font-family: var(--font-title);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 4px;
}

/* ============================================
   TECH NOTES HUB SECTION (Homepage Cards)
   ============================================ */
.tech-hub-section {
  margin: 64px 0;
}

.tech-hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 32px;
}

.tech-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition-smooth);
  cursor: pointer;
  display: block;
  text-decoration: none;
}

.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color-hover);
}

.tech-card-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, rgba(42, 77, 61, 0.08), rgba(192, 146, 91, 0.1));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.6rem;
  border: 1px solid rgba(42, 77, 61, 0.1);
}

.tech-card h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.3;
}

.tech-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

.tech-card-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-secondary);
  font-family: var(--font-title);
  letter-spacing: 0.5px;
}

@media (max-width: 992px) {
  .tech-hub-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
  .detail-hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px;
  }
}

@media (max-width: 768px) {
  body {
    padding-top: 70px;
  }
  .site-header {
    height: 70px;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .footer-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .flora-list {
    grid-template-columns: 1fr;
  }
}