/* ===== Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f0f9ff;
  color: #111;
  line-height: 1.6;
}

/* ===== Wrapper ===== */
.wrapper {
  max-width: 1200px;
  margin: 0px;
  margin-left: auto;

  padding: 20px;
}

/* ===== Header and Navbar ===== */
header {
  background-color: rgba(201, 232, 251, 0.9);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

nav {
  display: flex;
  align-items: center;
}

nav a {
  position: relative;
  margin-left: 20px;
  text-decoration: none;
  color: #004c99;
  font-weight: bold;
  padding: 5px 0;
  transition: color 0.3s ease;
}

/* Underline hover effect */
nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  height: 2px;
  width: 0%;
  background-color: rgb(0, 0, 0);
  transition: width 0.3s ease;
}

nav a:hover {
  color: #061682;
  transform: scale(1.1);
  transition: 0.5s ease;
}

nav a:hover::after {
  width: 100%;
}

/* ===== Main ===== */

main {
  padding: 60px 40px;
  margin-top: 10vh;
  background-color: #e0f7ff;
}

/* ===== Buttons ===== */
button {
  background-color: #007acc;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s ease;
}

button:hover {
  background-color: #005f99;
}

/* ===== Cards / Tiles ===== */
.card {
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  padding: 20px;
  margin-bottom: 20px;
  transition: 0.3s ease;
}

.card:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* ===== Images ===== */
img {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
}

.logo a {
  text-decoration: none;
}

/* ===== Utility Classes ===== */
.text-center {
  text-align: center;
}

/* ===== logo ===== */

header .logo {
  display: flex;
  align-items: center;
  font-weight: bold;
  font-size: 1.2rem;
  color: #004c99;
}

header .logo img {
  scale: 3;
  height: 40px;
  margin-right: 10px;
}

/* ===== profile icon ===== */
.profile-icon {
  width: 30px;
  height: 30px;
  border-radius: 0%;
  vertical-align: middle;
  transition: transform 0.3s;
}

.profile-link {
  display: inline-block;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-image: url("Images/Student-02/profile_icon.png");
  background-size: cover;
  background-position: center;
  position: relative;
}

.profile-link:hover {
  transform: scale(1.1);
}

.profile-link::after {
  content: "Profile";
  position: absolute;
  bottom: -25px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #004c99;
  color: #fff;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.profile-link:hover::after {
  opacity: 1;
}

/* ===== Footer ===== */
footer {
  background-color: #004c99;
  color: white;
  padding: 40px 40px 20px;
  font-family: Arial, sans-serif;
  margin-bottom: 2px;
}

footer a {
  color: #aee;
  text-decoration: underline;
}

.footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: flex-start;
  max-width: 1200px;
  margin: 1 auto;
  gap: 30px;
}

.footer-logo {
  width: 180px;
  height: auto;
  display: block;
  margin: 0;
  padding: 0;
}
.footer-col {
  flex: 0 0 auto;
  width: 200px;
}

.footer-logo-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.footer-site-name {
  font-size: 1.3rem;
  font-weight: bold;
  margin-top: 0;
  line-height: 1;
}

.footer-col h4 {
  margin-bottom: 10px;
  font-size: 1.1rem;
  border-bottom: 2px solid #aee;
  display: inline-block;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

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

.footer-col ul li a {
  color: #aee;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: white;
  text-decoration: underline;
}

.footer-credit {
  text-align: center;
  margin-top: 25px;
  font-size: 0.9rem;
  color: #bbe1ff;
}
/* ===== go top button ===== */

.go-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #0077b6;
  color: white;
  padding: 10px 15px;
  border-radius: 50%;
  text-decoration: none;
  font-size: 1.5rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  display: none; /* hidden at first */
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 999;
}
.go-top:hover {
  background-color: #005f99;
  transform: scale(1.1);
}