body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* PAGE CONTAINER */
.page {
  width: 100%;
  max-width: 900px;
}

/* HEADER */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 40px 20px 20px;
}

.logo img {
  height: 135px;
}

/* CARD */
.card {
  width: 100%;
  max-width: 600px;
  margin: 15px auto;
  background: linear-gradient(135deg, #6eeca8, #93e5ae);
  border-radius: 14px;
  padding: 25px 22px;
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
}

/* FORM */
.headline {
  font-size: 27px;
  font-weight: bold;
  margin-bottom: 5px;
  display: block;
}

input[type="text"] {
  width: 90%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  margin-bottom: 14px;
  background: #eef3f7;
  font-size: 15px;
  font-weight: bold;
}

/* CHECKBOX */
.checkbox {
  font-size: 16px;
  margin: 12px 0;
}

/* BUTTONS */
.buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 15px;
}

button {
  font-size: 15px;
  font-weight: bold;
  padding: 7px 14px;
  margin-top: 5px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
}

.close-btn {
  background: white;
  border: 2px solid #999;
}

.quiz-btn {
  background: white;
  border: 3px solid #1c1c1c;
}

.quiz-btn:disabled {
  background: #ccc;
  border: 3px solid #999;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
  .header {
    padding: 20px 15px 15px;
  }

  .logo img {
    height: 100px;
  }

  .card {
    max-width: 90%;
    margin: 10px auto;
    padding: 20px 15px;
  }

  .headline {
    font-size: 22px;
    margin-bottom: 10px;
  }

  input[type="text"] {
    width: 95%;
    padding: 10px;
    font-size: 14px;
    margin-bottom: 12px;
  }

  .checkbox {
    font-size: 14px;
    margin: 10px 0;
  }

  button {
    font-size: 13px;
    padding: 8px 12px;
    margin-top: 8px;
  }
}

@media (max-width: 480px) {
  .page {
    width: 90%;
    margin-right: 2.5%;
  }

  .header {
    padding: 15px 10px 10px;
  }

  .logo img {
    height: 80px;
  }

  .card {
    max-width: 95%;
    margin: 8px auto;
    padding: 15px 12px;
    border-radius: 10px;
  }

  .headline {
    font-size: 18px;
    margin-bottom: 8px;
  }

  input[type="text"] {
    width: 100%;
    padding: 8px;
    font-size: 13px;
    margin-bottom: 10px;
    box-sizing: border-box;
  }

  .checkbox {
    font-size: 13px;
    margin: 8px 0;
  }

  .buttons {
    flex-direction: column;
  }

  button {
    font-size: 12px;
    padding: 10px 12px;
    margin-top: 8px;
    margin-bottom: 6px;
    width: 100%;
  }

  .close-btn {
    order: 2;
  }

  .quiz-btn {
    order: 1;
  }
}