:root {
  --primary-color: #d32f2f;
  --secondary-color: #003087;
  --text-dark: #333;
  --text-light: #555;
  --background-light: #f5f5f5;
  --shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  --spacing-sm: 10px;
  --spacing-md: 20px;
  --spacing-lg: 40px;
  --font-size-main: 2.5rem;
  --font-size-section: 1.5rem;
  --font-size-sub: 1.3rem;
  --font-size-text: 1rem;
  --color-gray-50: #d4d4d4;
  --color-gray-100: #d9d9d9;
  --color-gray-200: #eeeeee;
  --color-gray-220: #f5f5f5;
  --color-gray-250: #f6f7f9;
  --color-gray-260: #e3e3e3;
  --color-gray-270: #e3e3e3;
  --color-gray-280: #e5dfe0;
  --color-gray-300: #626262;
  --color-gray-310: rgba(68, 73, 77, 0.2);
  --color-gray-320: #44494d;
  --color-gray-330: #868686;
  --color-gray-340: #666c89;
  --color-gray-400: #1a1818;
  --color-gray-500: #1c1f35;
  --color-black-400: rgba(0, 0, 0, 0.5);

  /* Màu xanh chủ đạo - thay cho đỏ */
  --color-blue-200: #e6f0ff;
  /* tương ứng red-200 */
  --color-blue-500: #007bff;
  /* tương ứng red-500 */
  --color-blue-600: #0056b3;
  /* tương ứng red-600 */
}

.container-about {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

.section {
  padding: var(--spacing-lg) 0;
}

.title--main {
  font-size: var(--font-size-main);
  font-weight: 600;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.title--section {
  font-size: var(--font-size-section);
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.title--card {
  font-size: var(--font-size-sub);
  font-weight: bold;
  background-color: var(--primary-color);
  color: #fff;
  padding: var(--spacing-sm) var(--spacing-md);
  border-top-right-radius: 16px;
  display: inline-block;
  margin-bottom: var(--spacing-sm);
}

.title--main {
  font-family: "Quicksand", sans-serif;
}

.description {
  font-size: var(--font-size-text);
  line-height: 1.6;
  color: var(--text-light);
}

/* Giới thiệu chung */
.intro__wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.intro__image-container {
  flex: 1;
  min-width: 300px;
}

.intro__image {
  width: 100%;
  max-width: 700px;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: transform 0.3s;
}

.intro__text {
  flex: 1;
  min-width: 300px;
}

.intro__text .title--main {
  text-align: left;
  padding-bottom: 10px;
}

.intro__text .title--main::after {
  content: "";
  display: block;
  width: 100px;
  height: 4px;
  background-color: var(--secondary-color);
  margin-top: var(--spacing-sm);
}

.intro__company-title {
  font-size: var(--font-size-section);
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: var(--spacing-md);
}

/*Tầm nhìn*/
.vision-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.vision-image-container {
  flex: 1;
  min-width: 300px;
}

.vision-text {
  flex: 1;
  min-width: 300px;
}

.vision__background {
  width: 100%;
  max-width: 700px;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: transform 0.3s;
}

.vision-text h2 {
  text-align: left;
  padding-bottom: 5px;
}

.vision-text h2::after {
  content: "";
  display: block;
  width: 130px;
  height: 4px;
  background-color: var(--secondary-color);
  margin-top: var(--spacing-sm);
  position: relative;
  left: 0;
}

/* Sứ mệnh */
.mission-content {
  max-width: 1200px;
  padding: 30px;
  background-color: #fff;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  margin: 0 auto;
  /* Thêm để căn giữa mission-content trong mission-container */
}

.mission-container {
  margin-top: 40px;
  justify-content: center;
  display: flex;
  align-items: center;
}

.mission__background {
  width: 100%;
  height: 300px;
  object-fit: cover;
  position: relative;
  left: 0;
  top: 30%;
  z-index: -1;
}

.mission__values {
  display: flex;
  justify-content: center;
  /* Căn giữa các mission__value-item */
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
  flex-wrap: wrap;
}

.mission__value-item {
  display: flex;
  align-items: center;
  /* Căn giữa theo chiều dọc */
  justify-content: center;
  /* Căn giữa theo chiều ngang */
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  flex: 0 1 auto;
  /* Chỉ chiếm không gian cần thiết, không kéo giãn */
  min-width: 150px;
  text-align: center;
  /* Căn giữa văn bản */
}

.mission__value-icon {
  width: 16px;
  height: 16px;
  background: linear-gradient(90deg, rgba(2, 0, 36, 1) 0%, rgba(9, 9, 121, 1) 41%, rgba(0, 212, 255, 1) 100%);
  border-radius: 50%;
}

.mission__value-text {
  font-size: var(--font-size-text);
  font-weight: 600;
  color: var(--text-dark);
}

.mission__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  justify-items: center;
  /* Thêm để căn giữa các ô lưới */
}

.mission__stat-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  justify-content: center;
  /* Thêm để căn giữa nội dung trong mỗi ô */
}

.mission__stat-icon {
  width: 64px;
  height: 64px;
}

.mission__stat-details {
  display: flex;
  flex-direction: column;
}

.mission__stat-number {
  font-size: var(--font-size-sub);
  font-weight: bold;
  color: var(--primary-color);
}

.mission__stat-label {
  font-size: var(--font-size-text);
  font-weight: 600;
  color: var(--text-light);
}

.mission-content .description {
  overflow: break-word;
  text-align: center;
}

.mission-content .title--main::after {
  content: "";
  display: block;
  width: 140px;
  height: 4px;
  background-color: var(--secondary-color);
  margin-top: var(--spacing-sm);
  position: relative;
  left: 44%;
}

/* Giá trị cốt lõi */
.values__wrapper {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.values__image-container {
  flex: 1;
  min-width: 300px;
}

.values__image {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.values__text {
  flex: 1;
  min-width: 300px;
}

.values__list {
  list-style: none;
  padding: 0;
  margin-top: var(--spacing-sm);
}

.values__list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-text);
  color: var(--text-light);
}

.values__list-icon {
  width: 24px;
  height: 24px;
}

.core-value-title .title--main::after {
  content: "";
  display: block;
  width: 170px;
  height: 4px;
  background-color: var(--secondary-color);
  margin-top: var(--spacing-sm);
  position: relative;
  left: 43%;
}

/* Tại sao chọn chúng tôi */
.reasons__container {
  background-color: var(--background-light);
  position: relative;
  width: 100%;
}

.reasons__background {
  position: relative;
  transform: translateX(-50%);
  width: 100%;
  height: auto;
  z-index: -1;
}

.reasons__grid-above {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  padding: 20px;
}

.reasons__grid-below {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  padding: 20px;
}

.reasons__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: 20px;
}

.reasons__container .title--main {
  padding-top: 50px;
}

.reasons__container .title--main::after {
  content: "";
  display: block;
  width: 270px;
  height: 4px;
  background-color: var(--secondary-color);
  margin-top: var(--spacing-sm);
  position: relative;
  left: 42%;
}

.title-second {
  text-align: center;
  color: #1a1818;
}

.reasons__content .description {
  text-align: left;
}

.reasons__icon {
  width: 50px;
  height: 50px;

}

.reasons__content {
  flex: 1;
}

/* Thông tin liên hệ */
.cards__wrapper {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.card {
  position: relative;
  flex: 1;
  min-width: 300px;
  max-width: 600px;
  text-decoration: none;
  color: inherit;
}

.card__image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
}

.card__content {
  position: absolute;
  bottom: var(--spacing-md);
  left: 0;
  right: 0;
  padding: 0 var(--spacing-md);
  color: #fff;
  z-index: 10;
}

.card__description {
  font-size: var(--font-size-text);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.card__read-more {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  font-size: var(--font-size-text);
  font-weight: 500;
}

.card:hover .card__image {
  transform: scale(1.02);
}

/* Responsive */
@media (max-width: 1280px) {
  .reasons__background {
    display: none;
  }
}

@media (max-width: 1024px) {
  .values__wrapper {
    flex-direction: column;
    align-items: center;
  }

  .cards__wrapper {
    flex-direction: column;
    align-items: center;
  }

  .card {
    max-width: 100%;
  }
}

@media (max-width: 959px) {
  .container-about:has(.mission-container) {
    height: auto;
    /* Bỏ chiều cao cố định */
    padding-bottom: var(--spacing-lg);
    /* Thêm padding để tránh đè */
  }

  .mission__background {
    top: 40%;
    /* Điều chỉnh vị trí hình nền */
    height: 200px;
    /* Giảm chiều cao hình nền để tránh tràn */
  }

  .mission-content {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 768px) {
  .container-about {
    padding: var(--spacing-sm);
  }

  .intro__wrapper {
    flex-direction: column;
  }

  .mission__background {
    display: none;
    /* Ẩn hình nền trên màn hình nhỏ */
  }

  .mission__values {
    flex-direction: column;
  }

  .title--main,
  .title--section {
    font-size: var(--font-size-sub);
  }

  .title--card {
    font-size: 1.2rem;
  }

  .description,
  .card__description {
    font-size: 0.9rem;
  }

  /* Điều chỉnh gạch dưới cho responsive */
  .core-value-title .title--main::after,
  .reasons__container .title--main::after {
    width: 50%;
    /* Tăng chiều rộng tương đối cho màn hình nhỏ */
    max-width: 100px;
    /* Giới hạn tối đa để tránh quá dài */
  }

  .mission-content .title--main::after {
    width: 40%;
    /* Tăng chiều rộng tương đối cho màn hình nhỏ */
    max-width: 90px;
  }
}

@media (max-width: 714px) {
  .mission-content .title--main::after {
    width: 30%;
    /* Tăng chiều rộng tương đối cho màn hình nhỏ */
    max-width: 80px;
  }
}

@media (max-width: 607px) {
  .mission-content .title--main::after {
    width: 15%;
    /* Tăng chiều rộng tương đối cho màn hình nhỏ */
    max-width: 70px;
  }

  .core-value-title .title--main::after {
    width: 30%;
    max-width: 80px;
  }
}

/*Animation*/
/* Add slide-up animation */
@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Apply animation to sections when visible */
.container-about,
.reasons__container {
  opacity: 0;
  /* Initially hidden */
  transform: translateY(50px);
  /* Start position for animation */
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  /* Smooth transition */
}

.container-about.visible,
.reasons__container.visible {
  opacity: 1;
  transform: translateY(0);
  animation: slideUp 0.6s ease-out forwards;
  /* Apply slide-up animation */
}

/* Ensure mission__background has its own animation */
.mission__background {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.mission__background.visible {
  opacity: 1;
  transform: translateY(0);
  animation: slideUp 0.6s ease-out forwards;
}