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

body {
  background-color: #f1e9f5; /* Nền tím nhạt */
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header & Navigation */
.navbar {
  background-color: #e61e25; /* Màu đỏ chủ đạo */
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 50px;
  position: relative;
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

#mainMenu {
  display: flex;
  align-items: center;
  position: relative;
}

#mainMenu p {
  margin-left: 20px;
  color: white;
  font-size: 14px;
}

#mainMenu a {
  color: white;
  text-decoration: none;
  font-size: 14px;
  margin-left: 20px;
  display: inline-block;
  padding: 5px 0;
  cursor: pointer;
  position: relative;
}

#mainMenu a.active {
  border-bottom: 2px solid white;
  font-weight: bold;
}

/* Dropdown Danh Sách Điện Thoại */
#phoneList {
  position: absolute;
  top: 100%;
  left: 20px;
  background: #e61e25;
  width: 180px;
  display: none;
  padding: 5px 0;
  border-radius: 5px;
  z-index: 999;
  list-style: none;
}

#phoneList li {
  padding: 10px 15px;
  color: white;
  cursor: pointer;
}

#phoneList li:hover {
  background-color: #c71a20;
}

list-style: none;
padding-left: 0;
margin: 0;
/* MENU MOBILE TOGGLE BUTTON */
.menu-toggle {
  font-size: 26px;
  cursor: pointer;
  display: none;
  color: white;
}

/* Nội dung chính */
.container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 20px;
}

.content-card {
  background: white;
  width: 100%;
  max-width: 800px;
  padding: 40px 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.content-card h1 {
  text-align: center;
  font-size: 26px;
  font-weight: bold;
  color: #333;
  margin-bottom: 15px;
}

.divider {
  border: 0;
  border-top: 1px solid #eee;
  margin-bottom: 30px;
}

.text-content p {
  font-size: 15px;
  color: #444;
  line-height: 1.6;
  margin-bottom: 20px;
}

/* CONTACT FORM */
.contact-form form {
  display: flex;
  flex-direction: column;
}

.contact-form input,
.contact-form textarea {
  padding: 12px 15px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 14px;
  outline: none;
  width: 100%;
}

.contact-form textarea {
  resize: vertical;
  height: 120px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #e61e25;
  box-shadow: 0 0 4px rgba(230, 30, 37, 0.2);
}

.contact-form button {
  padding: 12px;
  background-color: #e61e25;
  color: white;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  font-size: 15px;
  transition: background 0.3s;
}

.contact-form button:hover {
  background-color: #c71a20;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  color: #888;
  font-size: 14px;
  background-color: #f1e9f5;
}

/* ============================= */
/* Mobile Responsive */
/* ============================= */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 15px 25px;
  }

  .menu-toggle {
    display: block;
    position: absolute;
    top: 15px;
    right: 25px;
  }

  #mainMenu {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: 10px;
    gap: 10px;
  }

  #mainMenu.show {
    display: flex;
  }

  #mainMenu a,
  #mainMenu p {
    margin-left: 0;
    padding: 10px 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  #phoneList {
    position: static;
    width: 100%;
    background: rgba(0, 0, 0, 0.1);
    padding-left: 15px;
  }

  .container {
    padding: 20px 10px;
  }

  .content-card {
    padding: 25px 20px;
  }
}