/* ===============================
   BASE – DESKTOP / LAPTOP
   =============================== */
.appointment-form {
  max-width: 750px;
  margin: 40px auto;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  padding: 40px 50px;
  font-family: "Poppins", sans-serif;
  border-top: 5px solid #007bff;
}

.appointment-form h2 {
  text-align: center;
  color: #0d2b45;
  font-weight: 700;
  margin-bottom: 20px;
  font-size: 28px;
}

/* 🔹 2 column layout by default */
.appointment-form form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 25px;
}

/* form group */
.appointment-form .form-group {
  width: 100%;
}

/* labels */
.appointment-form label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
  color: #333;
}

/* inputs */
.appointment-form input,
.appointment-form select,
.appointment-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 15px;
  background: #f9f9f9;
}

/* textarea & button full width */
.appointment-form textarea,
.appointment-form .submit-btn {
  grid-column: span 2;
}

/* submit button */
.submit-btn {
  background: linear-gradient(135deg, #007bff, #0056b3);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

/* ===============================
   TABLET (≤ 991px)
   =============================== */
@media (max-width: 991px) {
  .appointment-form {
    max-width: 680px;
    padding: 30px 35px;
  }
}

/* ===============================
   MOBILE (≤ 767px)
   =============================== */
@media (max-width: 767px) {

  /* 🔥 FORCE 1 FIELD PER ROW */
  .appointment-form form {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .appointment-form textarea,
  .appointment-form .submit-btn {
    grid-column: span 1;
  }

  .appointment-form {
    margin: 20px 12px;
    padding: 22px;
  }

  .appointment-form h2 {
    font-size: 24px;
  }
}

/* ===============================
   SMALL MOBILE (≤ 480px)
   =============================== */
@media (max-width: 480px) {
  .appointment-form {
    padding: 18px;
  }

  .appointment-form input,
  .appointment-form select,
  .appointment-form textarea {
    font-size: 14px;
    padding: 9px 12px;
  }

  .submit-btn {
    font-size: 15px;
    padding: 12px;
  }
}