:root {
  --body-bg-color: #ffffff;
  --body-text-color: #000000;
  --heading-color: #006c8b;
  --hero-gradient1: #99e6fc;
  --hero-gradient2: #006c8b;
  --footer-bg-color: #006c8b;
  --link-color: #99e6fc;
  --header-bg-color: #006c8b;
  --font-family: system-ui;
  --nav-link-color: #ffffff;
  --footer-text-color: #ffffff;
  --header-text-color: #ffffffff;
}

body {
  background-color: var(--body-bg-color) !important;
  color: var(--body-text-color) !important;
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1 {
  font-size: clamp(2rem, 4vw, 2.5rem) !important;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2rem) !important;
}

h3 {
  font-size: clamp(1.4rem, 3vw, 1.7rem) !important;
}

p {
  margin-bottom: 0.5rem !important;
}

section {
  padding: 15px 0;
}


h2,
h3 {
  color: var(--heading-color) !important;
}

h2 {
  font-family: var(--font-family);
  font-weight: 700;
  text-align: center;
  position: relative;
  margin-bottom: 1.5rem;
  letter-spacing: 2px;
  text-shadow:
    0 0 5px var(--hero-gradient1),
    0 0 10px var(--hero-gradient2);

  /* gentle wave animation */
  animation: h2wave 5s infinite ease-in-out;
}

/* Subtle glowing underline like seaweed stem */
h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--hero-gradient1), var(--hero-gradient2));
  animation: shimmer 4s infinite linear;
}

/* Wave effect */
@keyframes h2wave {

  0%,
  100% {
    transform: translateY(0) rotate(-1deg);
  }

  50% {
    transform: translateY(-4px) rotate(1deg);
  }
}

/* Shimmer effect for underline */
@keyframes shimmer {
  0% {
    background-position: -100px 0;
  }

  100% {
    background-position: 200px 0;
  }
}

.content-area a {
  color: var(--link-color) !important;
  text-decoration: none !important;
}

.content-area a:hover {
  color: var(--link-color) !important;
  opacity: 0.8;
}

.footer {
  background-color: var(--footer-bg-color);
  color: var(--footer-text-color);
}

.footer a {
  text-decoration: none;
  color: var(--link-color) !important;
}


.sidebar-page-list {
  padding: 0;
  margin: 0;
  margin-bottom: 17px;
  width: 279px;
}

.sidebar-page-list li {
  list-style-type: disc;
  list-style-position: inside;
  color: var(--heading-color);
}

.sidebar-page-list li::marker {
  color: var(--link-color);
  font-size: 1.2em;
}

.sidebar-page-list li:last-child {
  border-bottom: none;
}

.sidebar-page-list li a {
  padding: 12px 0;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  color: var(--link-color);
}

.sidebar-page-list li a:hover {
  padding-left: 11px;
}

.error_page {
  min-height: 70vh;
}


.navbar {
  background-color: var(--header-bg-color) !important;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.hero-section {
  padding: 55px 0;
  position: relative;
  overflow: hidden;
  color: var(--header-text-color);
}

.hero-section.gradient-bg {
  background: linear-gradient(135deg, var(--hero-gradient1), var(--hero-gradient2));
}

.hero-section.with-bg {
  background-image: url('/images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-section.with-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgb(0, 0, 0));
  opacity: 0.5;
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

@media (max-width: 768px) {
  .hero-section {
    padding: 60px 0;
  }

}

.navbar-light .navbar-nav .nav-link {
  color: var(--nav-link-color, #141414) !important;
}

.navbar-light .navbar-nav .nav-link.active {
  color: var(--link-color) !important;
  font-weight: bold;
}

/* Mobile nav */
@media (max-width: 1199.98px) {
  .navbar-collapse {
    position: fixed;
    top: 61px;
    left: 15px;
    right: 15px;
    background-color: color-mix(in srgb, var(--header-bg-color) 65%, transparent);
    backdrop-filter: blur(12px);
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    padding: 15px;
    margin: 0;
  }

  .navbar-nav {
    width: 100%;
  }

  .navbar-nav .nav-item {
    margin: 7px 0;
  }

  .navbar-nav .nav-item:hover {
    transform: translateY(-1px);
  }

  .navbar-nav .nav-link {
    font-size: 1.2rem;
    font-weight: 500;
    text-decoration: none;
    display: block;
    padding: 0;
  }

  .navbar-toggler {
    z-index: 10000;
    position: relative;
    border: var(--bs-border-width) solid var(--nav-link-color, #141414) !important;
    background-color: #fff;
  }
}

@media screen and (min-width: 1199.98px) {
  .dropdown-menu {
    top: 100%;
    left: 50% !important;
    transform: translateX(-50%);
  }
}

.navbar .dropdown-toggle::after {
  transition: transform .3s ease
}

.dropdown:hover .dropdown-toggle::after {
  transform: rotate(180deg)
}

.custom-dropdown {
  border: 0;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .15);
  border-radius: 12px;
  padding: .5rem 0;
  margin-top: .5rem;
  min-width: 220px;
  background: color-mix(in srgb, var(--header-bg-color) 65%, transparent) !important;
  backdrop-filter: blur(12px)
}

.custom-dropdown .dropdown-item {
  padding: .75rem 1.5rem;
  transition: all .3s ease;
  color: var(--nav-link-color, #141414) !important;
  font-weight: 500;
  border-radius: 0;
  text-wrap: wrap
}

.custom-dropdown .dropdown-item:hover {
  color: #fff;
  background: color-mix(in srgb, var(--header-bg-color) 95%, transparent) !important;
}

.custom-dropdown .dropdown-item i {
  width: 16px;
  color: #6c757d;
  transition: color .3s ease
}

.custom-dropdown .dropdown-item:hover i {
  color: #fff
}

.dropdown-menu {
  opacity: 0;
  transition: all .3s ease;
  display: block;
  visibility: hidden
}

.dropdown-menu.show {
  opacity: 1;
  transform: translateY(0);
  visibility: visible
}

@media (min-width:1199.98px) {
  .custom-dropdown {
    max-width: 200px
  }
}

@media (max-width:1199.98px) {
  .custom-dropdown {
    display: none;
    background: #f8f9fa;
    box-shadow: none;
    border-radius: 0;
    margin-top: 0;
    border-top: 1px solid #dee2e6
  }

  .custom-dropdown .dropdown-item:hover {
    margin: 0;
    border-radius: 0;
    transform: none
  }
}

.dropdown-menu:hover,
.dropdown:hover .dropdown-menu {
  display: block !important;
  visibility: visible;
  opacity: 1
}

.dropdown-item.active,
.dropdown-item:active {
  color: #fff;
  text-decoration: none;
  background-color: #91919131 !important;
}

.error-text {
  font-family: var(--font-family);
  font-size: 10rem;
  font-weight: 900;
  color: var(--heading-color);
  text-align: center;
  display: inline-block;
  letter-spacing: -5px;
  position: relative;
  text-shadow:
    0 0 10px var(--hero-gradient1),
    0 0 20px var(--hero-gradient2),
    0 0 30px var(--hero-gradient2);

  /* Wavy seaweed-like animation */
  animation: seaweed 4s infinite ease-in-out;
}

/* Add a subtle water reflection shine */
.error-text::after {
  content: "404";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  color: var(--hero-gradient1);
  opacity: 0.2;
  transform: scaleY(-1) translateY(-20%);
  background: linear-gradient(to top, rgba(255, 255, 255, 0.4), transparent);
  -webkit-background-clip: text;
  background-clip: text;
  animation: ripple 6s infinite ease-in-out;
}

/* Keyframes for waving motion */
@keyframes seaweed {

  0%,
  100% {
    transform: rotate(-2deg) translateY(0);
  }

  50% {
    transform: rotate(2deg) translateY(-5px);
  }
}

/* Keyframes for watery ripple reflection */
@keyframes ripple {

  0%,
  100% {
    transform: scaleY(1) translateY(20%) translateX(0);
    opacity: 0.15;
  }

  50% {
    transform: scaleY(1) translateY(-25%) translateX(3px);
    opacity: 0.3;
  }
}

.box {
  background: linear-gradient(145deg,
      rgba(153, 230, 252, 0.15),
      rgba(0, 108, 139, 0.1));
  border: 2px solid var(--hero-gradient2);
  border-radius: 1.5rem;
  padding: 1rem;
  box-shadow: 0 8px 20px rgba(0, 108, 139, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}

/* Heading inside box */
.box h3 {
  color: var(--heading-color);
  font-family: var(--font-family);
  margin-bottom: 1rem;
  position: relative;
  text-align: center;
}

/* Decorative underline like seaweed roots */
.box h3::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  margin: 0.5rem auto 0;
  background: linear-gradient(to right,
      var(--hero-gradient1),
      var(--hero-gradient2));
  border-radius: 5px;
}

/* Paragraph inside box */
.box p {
  color: var(--body-text-color);
  line-height: 1.7;
  font-size: 1rem;
}

/* Hover effect: floating like underwater */
.box:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 12px 25px rgba(0, 108, 139, 0.3);
}

.box-wrapper {
  background: rgba(255, 255, 255, 0.65);
  /* glassy effect */
  border: 3px solid transparent;
  border-radius: 1.8rem;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 6px 20px rgba(0, 108, 139, 0.25);
  position: relative;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  height: 100%;
}

/* Decorative animated gradient border */
.box-wrapper::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 3px;
  border-radius: inherit;
  background: linear-gradient(135deg,
      var(--hero-gradient1),
      var(--hero-gradient2),
      var(--link-color));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderflow 6s linear infinite;
}

/* Heading style */
.box-wrapper h3 {
  color: var(--heading-color);
  font-size: 1.6rem;
  margin-bottom: 1rem;
  text-align: center;
  font-weight: 700;
  letter-spacing: 1px;
}

/* Paragraph style */
.box-wrapper p {
  color: var(--body-text-color);
  line-height: 1.8;
  font-size: 1rem;
}

/* Hover: floating effect */
.box-wrapper:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 28px rgba(0, 108, 139, 0.35);
}

/* Animated gradient border flow */
@keyframes borderflow {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}