/* Reset CSS */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

/* Căn chỉnh body */
body {
  background-color: #fefefe;
}

/* Header */
header {
  display: flex;
  justify-content: space-between; /* Giữ logo bên trái, menu + nút về bên phải */
  align-items: center;
  padding: 15px 50px;
  background-color: #f0f0f0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

/* Logo */
.logo {
  font-size: 18px;
  font-weight: bold;
}

.logo a {
  text-decoration: none;
  color: #000;
}

/* Nhóm chứa menu và nút đặt lịch */
.header-right {
  display: flex;
  align-items: center;
  gap: 30px; /* Tạo khoảng cách giữa menu và nút đặt lịch */
}

/* Menu */
nav ul {
  list-style: none;
  display: flex;
  gap: 30px; /* Tạo khoảng cách giữa các mục menu */
  padding: 0;
  margin: 0;
  position: relative;
  z-index: 1100;
}

nav ul li {
  display: inline;
}

nav ul li a {
  text-decoration: none;
  color: black;
  font-size: 16px;
  font-weight: bold;
  padding: 10px;
}

/* Button đặt lịch (đã cập nhật) */
.booking-btn {
  background-color: #4097fa;
  color: white;
  border: none;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: bold;
  border-radius: 30px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
  position: relative;
  z-index: 900;
}

.booking-btn:hover {
  background-color: #007bff;
  transform: scale(1.05);
}

/* Trang chủ */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 80%;
  max-width: 1200px;
  margin: 100px auto 50px auto;
  scroll-margin-top: 100px;
  height: 80vh;
}

.hero-content {
  max-width: 50%;
}

/* Logo phòng khám */
.clinic-logo {
  width: 80px;
  margin-bottom: 10px;
}

h3 {
  font-size: 18px;
  color: #333;
  margin-bottom: 10px;
}

h1 {
  font-size: 40px;
  font-weight: bold;
  color: #333;
  margin-bottom: 15px;
}

h1 span {
  color: #4097fa;
}

p {
  font-size: 16px;
  color: #666;
  margin-bottom: 20px;
}

/* Hình ảnh bác sĩ */
.hero-image img {
  width: 100%;
  max-width: 500px;
}

/* -------------------------------------------------------------------------------------- */
/* Vùng bao bọc nội dung (giới hạn chiều rộng) */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* SECTION - Về chúng tôi */
.about-section {
  background-color: #d7d7d7; /* Màu nền xám nhạt như ảnh */
  padding: 40px 0;
  scroll-margin-top: 50px;
  height: 100vh;
}

/* Tiêu đề "Về chúng tôi" */
.section-title {
  font-size: 28px;
  margin-bottom: 30px;
  color: #000; /* Màu chữ đen */
}

/* Khối hiển thị 3 cột (3 thẻ dịch vụ) */
.cards {
  display: flex;
  flex-wrap: wrap; /* Để khi màn hình nhỏ sẽ tự xuống hàng */
  gap: 20px; /* Khoảng cách giữa các thẻ */
  justify-content: space-between;
}

/* Mỗi thẻ (card) dịch vụ */
.card {
  background-color: #fff;
  width: calc(33.333% - 13.333px); /* 3 thẻ chia đều, trừ khoảng cách */
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Trường hợp màn hình nhỏ (mobile) xếp dọc */
@media (max-width: 768px) {
  .card {
    width: 100%;
  }
}

/* Tiêu đề "Nha khoa không đau" (nếu cần) */
.pain-free-title {
  font-size: 24px;
  color: #007bff;
  text-align: center;
  margin: 16px 0 0 0;
}

/* Ảnh đại diện trên mỗi thẻ */
.card img {
  width: 100%;
  height: auto;
  display: block;
}

/* Nội dung của thẻ */
.card-content {
  padding: 15px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-content h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.card-content p {
  font-size: 14px;
  margin-bottom: 20px;
  color: #555;
  line-height: 1.5;
}

/* Nút "Đọc thêm" */
.read-more {
  display: inline-block;
  text-decoration: none;
  background-color: #fff;
  color: #333;
  border: 1px solid #333;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: bold;
  transition: all 0.3s;
}

.read-more:hover {
  background-color: #333;
  color: #fff;
}

.read-more::after {
  content: " >";
  font-weight: normal;
}

/* ----------------------------------------------------------------------------- */
/* Khung chứa nội dung */
.container-1 {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  scroll-margin-top: 70px;
  height: 100vh;
}

/* Tiêu đề chính */
.section-title-1 {
  font-size: 24px;
  font-weight: bold;
  color: #007bff;
  margin-bottom: 30px;
}

/* Mỗi khối thông tin bác sĩ */
.doctor-profile {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 40px;
}

.doctor-info {
  flex: 1;
  margin-right: 20px;
}

.doctor-info p {
  font-size: 16px;
  line-height: 1.5;
}

.doctor-image img {
  max-width: 200px;
  border-radius: 10px;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
  .doctor-profile {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .doctor-info {
    margin-right: 0;
    margin-bottom: 20px;
  }
}

/* -------------------------------------------------------------------------------- */
/* Phần dịch vụ */
.services-section {
  background-color: #d7d7d7;
  padding: 40px 20px;
  border-radius: 8px;
  text-align: center;
  scroll-margin-top: 60px;
  height: 65vh;
}

.services-section h2 {
  font-size: 28px;
  margin-bottom: 10px;
  color: #333;
}

.services-section p.subheading {
  font-size: 18px;
  color: #666;
  margin-bottom: 40px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1060px;
  margin: 0 auto;
}

.service-card {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card img {
  max-width: 100px;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
  text-transform: uppercase;
  color: #007bff;
}

.service-card p {
  font-size: 14px;
  color: #555;
  margin-bottom: 20px;
  flex: 1;
}

.service-card a.btn {
  display: inline-block;
  padding: 10px 20px;
  border: 2px solid #007bff;
  color: #007bff;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  transition: background-color 0.3s, color 0.3s;
}

.service-card a.btn:hover {
  background-color: #007bff;
  color: #fff;
}

.service-card.featured {
  border: 2px solid #007bff;
  background-color: #e8f4ff;
}

/* Footer */
footer {
  background-color: #609aff;
  padding: 20px;
  margin-top: 0;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-column {
  flex: 1 1 300px;
  margin: 10px;
}

.footer-column h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}

.footer-column p {
  font-size: 14px;
  color: #fff;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-container {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------------------- */
/* Phần CSS dành cho trang đặt lịch (Schedule) */

/* Calendar Container */
.calendar {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  margin-top: 120px; /* Để tránh header cố định */
}

/* Calendar Header */
.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.calendar-header h2 {
  margin: 0;
  font-size: 22px;
  color: #333;
}

.calendar-header button {
  padding: 8px 16px;
  background-color: #4097fa;
  border: none;
  color: #fff;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.calendar-header button:hover {
  background-color: #007bff;
}

/* Calendar Table */
.calendar-table {
  width: 100%;
  border-collapse: collapse;
}

.calendar-table th,
.calendar-table td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: center;
  vertical-align: top;
  min-width: 100px;
  height: 100px;
  position: relative;
  transition: background 0.3s;
}

.calendar-table td:hover {
  background: #f0f0f0;
}

.time-slot {
  cursor: pointer;
}

/* Đánh dấu lịch đã đặt */
.appointment-marked {
  background-color: #16a085;
  color: #fff;
  padding: 5px;
  border-radius: 5px;
  font-size: 14px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: #fff;
  padding: 25px 30px;
  border-radius: 10px;
  width: 400px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  position: relative;
  text-align: left;
}

/* Nút đóng modal */
.close {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  cursor: pointer;
  color: #888;
  transition: color 0.3s;
}

.close:hover {
  color: #333;
}

/* Form Container */
#form-container {
  display: block;
}

/* Form đặt lịch */
#appointment-form {
  display: flex;
  flex-direction: column;
}

#appointment-form label {
  margin: 10px 0 5px;
  font-weight: bold;
  color: #333;
}

#appointment-form input[type="text"],
#appointment-form select,
#appointment-form textarea {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 16px;
  width: 100%;
  margin-bottom: 10px;
}

#appointment-form textarea {
  resize: vertical;
  min-height: 60px;
}

#appointment-form button {
  background-color: #4097fa;
  color: #fff;
  border: none;
  padding: 12px;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
}

#appointment-form button:hover {
  background-color: #007bff;
  transform: scale(1.02);
}

/* Details Container (hiển thị thông tin lịch đã đặt) */
#details-container {
  display: none;
}

#details-container h2 {
  margin-bottom: 15px;
  color: #333;
}

#details-content p {
  margin: 8px 0;
  font-size: 16px;
  color: #555;
}

#close-details {
  background-color: #4097fa;
  color: #fff;
  border: none;
  padding: 10px;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
  width: 100%;
  margin-top: 15px;
}

#close-details:hover {
  background-color: #007bff;
  transform: scale(1.02);
}
/* -------------------------------------------------------------------------- */
/* Thông báo đặt lịch thành công */
.success-message {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #4caf50;
  color: white;
  padding: 15px 20px;
  border-radius: 5px;
  font-size: 16px;
  box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  display: flex;
  align-items: center;
  gap: 10px;
}

.success-message.show {
  display: flex;
  opacity: 1;
}

.close-success {
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  margin-left: auto;
  padding: 0 10px;
  transition: color 0.3s;
}

.close-success:hover {
  color: #ffdddd;
}