@keyframes hilFBv {
  /* color/position animation preserved */
  0% {
    top: 0px;
    left: 25%;
    color: #ff0000;
  }
  16% {
    top: 50%;
    left: 0px;
    color: #ffa500;
  }
  32% {
    top: 100%;
    left: 25%;
    transform: translateY(-100%);
    color: #ffff00;
  }
  52% {
    top: 0px;
    left: 75%;
    color: #008000;
    transform: translateY(0px);
  }
  60% {
    top: 25%;
    left: 100%;
    color: #0000ff;
    transform: translateX(-100%);
  }
  80% {
    top: 100%;
    left: 75%;
    color: #4b0082;
    transform: translate(0px, -100%);
  }
  100% {
    top: 0px;
    left: 25%;
    color: #ee82ee;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  overflow-x: hidden;
  user-select: none;
}

h1 {
  display: block;
  position: absolute;
  animation: 30s linear 0s infinite normal none running hilFBv;
  white-space: nowrap;
}

@media (max-width: 600px) {
  h1 {
    font-size: 24px;
    white-space: nowrap;
  }
}

.box {
  background-color: rgba(255, 255, 255, 0.8);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
  display: block;
  margin: 50px auto;
  max-width: 400px;
}

/* Dashboard / nav styling (light color palette preserved) */
body {
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial;
  background-color: #f4f4f4;
  color: #111;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px;
}

div {
  /* width: min(980px, 98%); */
  background: transparent;
  padding: 18px 20px;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(2, 6, 23, 0.06);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  /* gap: 8px; */
  margin: 6px 8px;
  padding: 8px 12px;
  border-radius: 10px;
  transition:
    background-color 160ms ease,
    transform 120ms ease;
  color: #fff;
  font-weight: 600;
  background-color: #007bff;
}

.nav-link a {
  color: #fff;
  text-decoration: none;
}
.nav-link.allowed {
  background-color: #28a745;
}
.nav-link.disabled {
  background-color: #6c757d;
  opacity: 0.85;
  pointer-events: none;
  cursor: not-allowed;
}

.nav-link:hover {
  background-color: #0056b3;
  transform: translateY(-3px);
}

#courses-div {
  display: flex;
  flex-wrap: wrap;
  /* gap: 8px; */
  /* margin-top: 12px; */
  box-shadow: none;
}

#sort-by-select {
  margin-top: 12px;
  margin-right: 12px;
  padding: 8px 10px;
  border-radius: 8px;
  background: #fff;
  color: #111;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

#total-price-span,
#total-price-label {
  /* display: block; */
  margin-top: 12px;
  font-weight: 700;
  color: #111;
}

.nav-link:hover {
  background-color: #0056b3;
  transform: translateY(-3px);
}
.nav-link.allowed:hover {
  background-color: #1e7e34;
}

@media (max-width: 600px) {
  body {
    padding: 20px 12px;
  }
  .nav-link {
    padding: 8px 10px;
    margin: 6px 6px;
  }
  #courses-div {
    gap: 6px;
  }
}