/* ==== Reset & Base ==== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
}
a {
  color: #fff;
  text-decoration: none;
}
h1, h2, h3 {
  margin-bottom: 1rem;
}
section {
  padding: 2rem 1rem;
  max-width: 900px;
  margin: auto;
}
ul {
  padding-left: 1.2rem;
}

/* ==== Header / Hero ==== */
.hero {
  background-color: #00704a;
  color: white;
  padding: 3rem 1rem;
  text-align: center;
}
.hero .btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.8rem 1.2rem;
  background-color: #2e7d32;
  color: white;
  border-radius: 5px;
}

/* ==== Dịch vụ 2 cột ==== */
.columns {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}
.columns > div {
  flex: 1;
  min-width: 280px;
}
.columns h3 {
  margin-bottom: 0.5rem;
}
.columns li {
  margin-bottom: 0.5rem;
}

/* ==== Gallery (Swiper) ==== */
.swiper {
  width: 100%;
  max-width: 600px;
  margin: auto;
}
.swiper-slide {
  text-align: center;
}
.swiper-slide img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

/* ==== Form Đặt lịch ==== */
form input, form button {
  display: block;
  width: 100%;
  padding: 0.9rem;
  margin-bottom: 1rem;
  border-radius: 6px;
  font-size: 1rem;
}
form input {
  border: 1px solid #ccc;
}
form button {
  background-color: #2e7d32;
  color: white;
  border: none;
  cursor: pointer;
}
form button:hover {
  background-color: #1b5e20;
}

/* ==== Footer ==== */
footer {
  text-align: center;
  background-color: #333;
  color: white;
  padding: 1rem;
  font-size: 0.9rem;
}