/* ডিফল্ট Light mode */
:root {
  --bg-color: #ffffff;
  --text-color: #222222;
  --btn-bg: #222222;
  --btn-text: #ffffff;
}

/* Dark mode */
.dark-mode {
  --bg-color: #121212;
  --text-color: #f1f1f1;
  --btn-bg: #f1f1f1;
  --btn-text: #121212;
}

.container {
  text-align: center;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: "Poppins", sans-serif;
  transition: all 0.3s ease;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  padding-top: 5%;
}

#toggleBtn {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  padding: 12px 25px;
  font-size: 1.1rem;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 20px;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

#toggleBtn:hover {
  transform: scale(1.05);
}
.custom-link {
    margin-left: 10%;
    display: inline-block;
    padding: 12px 28px;
    background: linear-gradient(45deg, #6a11cb, #2575fc);
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-radius: 30px;
    box-shadow: 0 4px 15px rgba(38, 50, 56, 0.3);
    transition: background 0.3s ease, box-shadow 0.3s ease;
    font-family: Arial, sans-serif;
  }

  .custom-link:hover {
    background: linear-gradient(45deg, #2575fc, #6a11cb);
    box-shadow: 0 6px 20px rgba(38, 50, 56, 0.5);
    text-decoration: none;
  }