/* RESET & CHUNG */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f9f9f9;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}
a {
  text-decoration: none;
  color: inherit;
  transition: 0.3s;
}
ul {
  list-style: none;
}

/* HEADER STYLE - ĐÃ TỐI ƯU */
.minimal-header {
  background: #ffffff;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  height: 80px;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
}
.logo h1 {
  font-size: 24px;
  color: #fe7201; /* Màu cam thương hiệu */
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 800;
}

.header-right {
  display: flex;
  align-items: center;
  margin-left: 12px;
}

.btn-call {
  background: #fe7201;
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 50px; /* Bo tròn hiện đại */
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 10px rgba(254, 114, 1, 0.2);
}
.btn-call:hover {
  background: #e66701;
  transform: translateY(-2px);
}

/* NỘI DUNG CHÍNH */
main {
  min-height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: #fff;
  margin: 0px auto;
  /* max-width: 1200px; */
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.03);
}

/* FOOTER STYLE */
.main-footer {
  background: #3f576e;
  color: #ecf0f1;
  padding: 70px 0 20px;
  /* margin-top: 50px; */
}
.main-footer .container {
  align-items: flex-start;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr; /* Chia cột đều hơn */
  gap: 40px;
}
.footer-col h3 {
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 12px;
  font-size: 18px;
  text-transform: uppercase;
}
.footer-col h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: #fe7201;
}
.footer-col p {
  font-size: 14px;
  opacity: 0.8;
  margin-bottom: 15px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a {
  font-size: 14px;
  opacity: 0.8;
}
.footer-col ul li a:hover {
  color: #fe7201;
  opacity: 1;
  padding-left: 8px;
}
.social-links {
  margin-top: 25px;
  display: flex;
  gap: 15px;
}
.social-links a {
  font-size: 18px;
  background: rgba(255, 255, 255, 0.1);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}
.social-links a:hover {
  background: #fe7201;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 50px;
  padding-top: 25px;
  font-size: 13px;
  opacity: 0.6;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .main-footer .container {
    grid-template-columns: 1fr;
  }
  .btn-call span {
    display: none; /* Ẩn chữ trên mobile cho gọn */
  }
  .logo h1 {
    font-size: 18px;
  }
}