/* =========================
   LIÊN HỆ - NỀN TRẮNG
========================= */
.lien_he_page {
  background: #ffffff;
  padding: 110px 20px 80px;
}

.lien_he_container {
  max-width: 1200px;
  margin: 0 auto;
}

.lien_he_heading {
  max-width: 900px;
  margin: 0 auto 50px;
  text-align: center;
}

.title_dark {
  font-family: 'Playfair Display', serif;
  font-size: 42px;
  font-weight: 800;
  text-transform: uppercase;
  text-align: center;
  color: #1f1f1f;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
  background: none;
  -webkit-text-fill-color: initial;
}

.lien_he_intro {
  color: #555;
  font-size: 18px;
  line-height: 1.8;
  text-align: center;
}

.lien_he_intro a {
  color: #c78f2b;
  font-weight: 700;
  text-decoration: none;
}

.lien_he_intro a:hover {
  color: #a56f14;
}

.lien_he_wrap {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 50px;
  align-items: start;
}

.sub_title_dark {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  font-weight: 700;
  color: #1f1f1f;
  margin-bottom: 22px;
  text-transform: uppercase;
}

/* info */
.info_box {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.info_item {
  padding-bottom: 18px;
}

.info_label {
  display: block;
  margin-bottom: 8px;
  color: #b8862f;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info_item p,
.info_item a {
  color: #333;
  font-size: 18px;
  line-height: 1.7;
  text-decoration: none;
}

.info_item a:hover {
  color: #b8862f;
}

/* form */
.lien_he_form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form_group input,
.form_group textarea {
  width: 100%;
  border: 1px solid #ddd;
  outline: none;
  background: #fff;
  color: #333;
  border-radius: 8px;
  padding: 16px 18px;
  font-size: 16px;
  font-family: 'Montserrat', sans-serif;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.form_group input:focus,
.form_group textarea:focus {
  border-color: #c78f2b;
  box-shadow: 0 0 0 3px rgba(199, 143, 43, 0.12);
}

.form_group textarea {
  min-height: 140px;
  resize: vertical;
}

.form_group input::placeholder,
.form_group textarea::placeholder {
  color: #8a8a8a;
}

.btn_gui {
  width: 100%;
  height: 54px;
  margin-top: 6px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #111;
  background: linear-gradient(90deg, #ff6a1f 0%, #f4c533 100%);
  transition: 0.25s ease;
}

.btn_gui:hover {
  opacity: 0.92;
  transform: translateY(-2px);
}

/* responsive */
@media (max-width: 991px) {
  .lien_he_page {
    padding: 90px 16px 55px;
  }

  .lien_he_wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .title_dark {
    font-size: 30px;
  }

  .sub_title_dark {
    font-size: 22px;
    text-align: center;
  }

  .lien_he_intro {
    font-size: 16px;
    line-height: 1.7;
  }

  .info_item p,
  .info_item a {
    font-size: 16px;
  }

  .form_group input,
  .form_group textarea {
    font-size: 15px;
    padding: 14px 16px;
  }

  .btn_gui {
    height: 50px;
    font-size: 15px;
  }
}