body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  background: #f0f0f0;
  overflow: auto;          /* allow scrolling */
  scrollbar-width: none; 
}

.waves {
  position: fixed;
  bottom: 0;
  width: 100%;
  height: 40%;
}

.pin-container {
        display: flex;
        gap: 10px;
        margin-bottom: 36px;
    }
    .pin-input {
        width: 50px;
        height: 50px;
        font-size: 24px;
        text-align: center;
        border: 2px solid #ccc;
        border-radius: 8px;
        outline: none;
        background-color: white;
    }
    .pin-input:focus {
        border-color: #007BFF;
        box-shadow: 0 0 5px rgba(0,123,255,0.5);
    }
    

/* HERO SECTION BACKGROUND */
.Join-Classroom {
  position: relative;
  background:none;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 100px;
  padding: 100px;
  height: 300px;
}


/* CONTENT STYLING */
.Join-Classroom-content {
  max-width: 1500px;
  display: flex;
  flex-direction: column; /* stacked by default (mobile view) */
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 40px;
}

/* TEXT WRAPPER (so h1 & p stay stacked even on desktop) */
.Join-Classroom-text-group {
  display: flex;
  flex-direction: column;
  max-width: 500px;
}

/* TEXT STYLING */
.Join-Classroom-content h1 {
  font-size: 2rem;
  margin: 0;
}

.Join-Classroom-content p {
  font-size: 1rem;
  line-height: 1.6;
}

/* CARD STYLING */
.Join-Classroom-card {
  background: white;
  border-radius: 20px;
  padding: 40px 60px;
  text-align: center;
  min-width: 100px;
  max-width: 250px;
  display: flex;               /* make buttons stack vertically */
  flex-direction: column;
  align-items: center;
  gap: 15px;                   /* space between buttons */
}

.Join-Classroom-card button:hover {
  transform: scale(1.03);
}

/* RESPONSIVE — switch to side-by-side layout on desktop */
@media (min-width: 900px) {

    .Join-Classroom{
        gap: 60px;
    }

  .Join-Classroom-content {
    flex-direction: row; /* side-by-side layout */
    align-items: center;
    text-align: left;
  }

  /* TEXT STYLING */
.Join-Classroom-content h1 {
  font-size: 3rem;
  margin: 0;
}

/* CARD STYLING */
.Join-Classroom-card {
  min-width: 500px;
  padding: 3% 0;
}

  .text-group {
    align-items: flex-start;
  }
}