@charset "UTF-8";
/* css/custom.css */

:root {
  --bs-primary: #3f4d66;
  --bs-primary-rgb: 63, 77, 102;
  --bs-accent: #b3d547;
  --bs-accent-rgb: 179, 213, 71;
}

/* --- Bootstrap Class Overrides --- */
.text-primary {
  color: var(--bs-primary) !important;
}

.bg-primary {
  background-color: var(--bs-primary) !important;
}

.border-primary {
  border-color: var(--bs-primary) !important;
}

/* --- Custom Utility Classes --- */
.text-accent {
  color: var(--bs-accent) !important;
}

.bg-accent {
  background-color: var(--bs-accent) !important;
}

.bg-custom-navy {
  background-color: var(--bs-primary) !important;
}

/* --- Button Components --- */
.btn-navy {
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
  color: #ffffff !important;
  font-weight: 700;
  transition: all 0.25s ease-in-out;
}

.btn-navy:hover,
.btn-navy:focus {
  background-color: var(--bs-accent) !important;
  border-color: var(--bs-accent) !important;
  color: #1a202c !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(63, 77, 102, 0.25) !important;
}

.btn-navy:active {
  background-color: #9ebf3b !important;
  border-color: #9ebf3b !important;
  color: #1a202c !important;
  transform: translateY(0);
}

.btn-accent {
  background-color: var(--bs-accent);
  border-color: var(--bs-accent);
  color: #1a202c;
  font-weight: 600;
  transition: all 0.2s ease-in-out;
}

.btn-accent:hover,
.btn-accent:focus,
.btn-accent:active {
  background-color: #9ebf3b;
  border-color: #9ebf3b;
  color: #000000;
}

.btn-outline-accent {
  color: var(--bs-accent) !important;
  border-color: var(--bs-accent) !important;
  transition: all 0.2s ease-in-out;
}

.btn-outline-accent:hover,
.btn-outline-accent:focus,
.btn-outline-accent:active {
  background-color: var(--bs-accent) !important;
  border-color: var(--bs-accent) !important;
  color: #1a202c !important;
}

/* Custom reversed button (Lime Green with black text to Dark Navy with white text on hover) */
.btn-lime {
  background-color: var(--bs-accent);
  color: #000000 !important;
  border: 1px solid var(--bs-accent);
  font-weight: 600;
  transition: all 0.25s ease-in-out;
}

.btn-lime:hover,
.btn-lime:focus {
  background-color: var(--bs-primary) !important;
  color: #ffffff !important;
  border-color: var(--bs-primary) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(63, 77, 102, 0.25) !important;
}

.btn-lime:active {
  background-color: #9ebf3b !important;
  color: #000000 !important;
  transform: translateY(0);
}

/* --- Navbar & Dropdown Enhancements --- */
.dropdown-menu {
  border-top: 3px solid var(--bs-accent);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--bs-primary);
  color: #ffffff;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link:focus {
  color: var(--bs-accent);
}

/* --- Page Scroll & Section Anchor Utilities --- */
html {
  scroll-behavior: smooth;
}

section[id],
div[id] {
  scroll-margin-top: 80px;
}

/* --- Footer --- */
footer {
  background-color: rgb(165, 191, 225);
  padding-top: 1rem;
  padding-bottom: 1rem;
  margin-bottom: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
}

footer {
  margin-top: auto;
}

footer, 
footer .text-muted, 
footer p {
  color: #212529 !important;
}

footer a {
  color: #212529 !important;
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

footer a:hover,
footer a:focus {
  color: var(--bs-accent) !important;
  text-decoration: underline !important;
}

/* --- Figures & Tables Thumbnail Gallery Styles --- */
.thumb-card {
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.thumb-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.thumb-img-wrapper {
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thumb-img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: opacity 0.2s ease-in-out;
}

.thumb-card:hover .thumb-img {
  opacity: 0.85;
}

/* --- Author Bio Links --- */
.about-author-link {
  color: var(--bs-primary);
  font-weight: 600;       
  text-decoration: underline;    
  text-underline-offset: 3px;    
  transition: color 0.2s ease-in-out;
}

.about-author-link:hover {
  color: var(--bs-accent);       
  text-decoration: underline;
}