/* style/download.css */
/* body đã padding-top: var(--header-offset) từ shared.css, không thêm lại tại đây */

:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --text-dark: #333333;
  --text-light: #ffffff;
  --bg-light: #f8f8f8;
  --login-color: #EA7C07;
}

.page-download {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark); /* Mặc định cho nền sáng */
}

.page-download__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 60px 20px;
  padding-top: 10px; /* Chỉ một khoảng đệm nhỏ, không dùng var(--header-offset) */
  background: linear-gradient(135deg, var(--primary-color) 0%, #1a8cc4 100%);
  color: var(--text-light);
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-width: 1200px; /* Đảm bảo hình ảnh không quá rộng */
  margin-bottom: 30px;
  order: 1; /* Đảm bảo hình ảnh xuất hiện trước nội dung */
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.page-download__hero-content {
  order: 2; /* Đảm bảo nội dung xuất hiện sau hình ảnh */
  max-width: 900px;
  margin: 0 auto;
}

.page-download__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem); /* Sử dụng clamp cho kích thước linh hoạt */
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-light);
}

.page-download__subtitle {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: var(--text-light);
}

.page-download__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap; /* Cho phép các nút xuống dòng trên di động */
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: background-color 0.3s ease, transform 0.3s ease;
  box-sizing: border-box;
  text-align: center;
  white-space: normal; /* Cho phép văn bản nút xuống dòng */
  word-wrap: break-word; /* Đảm bảo từ dài không tràn */
}

.page-download__btn-primary {
  background-color: var(--login-color); /* Màu đăng nhập cho nút chính */
  color: var(--text-light);
  border: 2px solid var(--login-color);
}

.page-download__btn-primary:hover {
  background-color: #c76600;
  transform: translateY(-3px);
}

.page-download__btn-secondary {
  background-color: transparent;
  color: var(--text-light);
  border: 2px solid var(--text-light);
}

.page-download__btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.page-download__section {
  padding: 60px 20px;
}

.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-download__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.page-download__introduction-section .page-download__section-title {
  color: var(--primary-color);
}

.page-download__text-block {
  margin-bottom: 20px;
  font-size: 1.1rem;
  text-align: justify;
}

.page-download__why-download-section {
  background-color: var(--bg-light);
  color: var(--text-dark);
}

.page-download__why-download-section .page-download__section-title {
  color: var(--primary-color);
}

.page-download__grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-download__card {
  background-color: var(--secondary-color);
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.page-download__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.page-download__card-image {
  width: 100%;
  max-width: 400px; /* Đảm bảo hình ảnh không quá nhỏ */
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
}

.page-download__card-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-download__card-text {
  font-size: 1rem;
  color: #555555;
}

.page-download__how-to-download-section {
  background-color: var(--secondary-color);
  color: var(--text-dark);
}

.page-download__how-to-download-section .page-download__section-title {
  color: var(--primary-color);
}

.page-download__download-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: center;
  margin-bottom: 40px;
}

.page-download__download-platform {
  flex: 1 1 45%;
  min-width: 300px;
  background-color: var(--bg-light);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__platform-title {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 25px;
  color: var(--primary-color);
}

.page-download__qr-code {
  width: 250px;
  height: 250px;
  margin-bottom: 25px;
  border: 5px solid var(--primary-color);
  border-radius: 8px;
  display: block;
}

.page-download__step-list {
  text-align: left;
  margin: 0 0 25px 0;
  padding-left: 20px;
  font-size: 1.05rem;
  color: #555555;
}

.page-download__step-list li {
  margin-bottom: 10px;
}

.page-download__btn-download {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
}

.page-download__btn-download:hover {
  background-color: #1a8cc4;
  border-color: #1a8cc4;
}

.page-download__notes-section {
  background-color: #eaf7ff; /* Màu nền nhẹ nhàng cho phần ghi chú */
  border-left: 5px solid var(--primary-color);
  padding: 25px;
  border-radius: 8px;
}

.page-download__notes-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-download__note-list {
  list-style-type: disc;
  padding-left: 25px;
  color: #555555;
  font-size: 1rem;
}

.page-download__note-list li {
  margin-bottom: 10px;
}

.page-download__features-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, #1a8cc4 100%);
  color: var(--text-light);
}

.page-download__features-section .page-download__section-title {
  color: var(--text-light);
}

.page-download__feature-item {
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.page-download__feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  filter: brightness(1.1); /* Giữ màu gốc, chỉ làm sáng nhẹ */
  display: block;
}

.page-download__feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-light);
}

.page-download__feature-text {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

.page-download__faq-section {
  background-color: var(--secondary-color);
  color: var(--text-dark);
}

.page-download__faq-section .page-download__section-title {
  color: var(--primary-color);
}

.page-download__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-download__faq-item {
  background-color: var(--bg-light);
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary-color);
  cursor: pointer;
  background-color: var(--secondary-color);
  border-bottom: 1px solid #e0e0e0;
}

.page-download__faq-question:hover {
  background-color: #f0faff;
}

.page-download__faq-item[open] .page-download__faq-question {
  border-bottom: 1px solid transparent; /* Loại bỏ đường viền khi mở */
}

.page-download__faq-qtext {
  flex-grow: 1;
}

.page-download__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 15px;
  transition: transform 0.3s ease;
}

.page-download__faq-item[open] .page-download__faq-toggle {
  transform: rotate(45deg);
}

.page-download__faq-answer {
  padding: 15px 25px 20px;
  font-size: 1rem;
  color: #555555;
  background-color: var(--bg-light);
}

.page-download__faq-answer p {
  margin: 0;
}

/* Details summary reset for cross-browser compatibility */
.page-download__faq-item summary {
  list-style: none;
}

.page-download__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-download__conclusion-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, #1a8cc4 100%);
  color: var(--text-light);
  text-align: center;
}

.page-download__conclusion-section .page-download__section-title {
  color: var(--text-light);
}

.page-download__conclusion-section .page-download__text-block {
  color: rgba(255, 255, 255, 0.9);
}

.page-download__conclusion-section .page-download__text-block a {
  color: var(--text-light);
  text-decoration: underline;
}

.page-download__conclusion-section .page-download__text-block a:hover {
  color: #f0faff;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .page-download__hero-section {
    padding: 40px 15px;
  }

  .page-download__main-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }

  .page-download__subtitle {
    font-size: 1.1rem;
  }

  .page-download__section {
    padding: 40px 15px;
  }

  .page-download__section-title {
    font-size: clamp(1.6rem, 4vw, 2.5rem);
  }

  .page-download__grid-layout {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .page-download__download-platform {
    flex: 1 1 100%;
    min-width: unset;
  }
}

@media (max-width: 768px) {
  .page-download {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-download__hero-section {
    padding: 30px 15px;
  }

  .page-download__hero-content {
    margin-top: 20px;
  }

  .page-download__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem) !important;
  }

  .page-download__subtitle {
    font-size: 1rem;
  }

  .page-download__cta-buttons {
    flex-direction: column; /* Nút xếp chồng trên di động */
    gap: 15px;
  }

  .page-download__btn-primary,
  .page-download__btn-secondary,
  .page-download a[class*="button"],
  .page-download a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__section {
    padding: 30px 15px;
  }

  .page-download__section-title {
    font-size: clamp(1.5rem, 5vw, 2.2rem) !important;
    margin-bottom: 30px;
  }

  .page-download__text-block {
    font-size: 1rem;
  }

  .page-download__grid-layout {
    grid-template-columns: 1fr;
  }

  .page-download__card,
  .page-download__feature-item {
    padding: 20px;
  }

  .page-download__card-title,
  .page-download__feature-title {
    font-size: 1.2rem;
  }

  .page-download__card-text,
  .page-download__feature-text {
    font-size: 0.95rem;
  }

  .page-download__qr-code {
    width: 180px;
    height: 180px;
  }

  .page-download__platform-title {
    font-size: 1.4rem;
  }

  .page-download__step-list,
  .page-download__note-list {
    font-size: 0.95rem;
    padding-left: 15px;
  }

  .page-download__notes-title {
    font-size: 1.3rem;
  }

  .page-download__faq-question {
    font-size: 1.05rem;
    padding: 15px 20px;
  }

  .page-download__faq-answer {
    font-size: 0.95rem;
    padding: 10px 20px 15px;
  }

  /* Hình ảnh và video responsive */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__download-platform,
  .page-download__notes-section,
  .page-download__feature-item,
  .page-download__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__hero-section {
    padding-top: 10px !important; /* body đã xử lý header-offset */
  }

  .page-download__cta-buttons,
  .page-download__button-group,
  .page-download__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    flex-wrap: wrap !important;
    gap: 10px;
  }

  .page-download video,
  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-download__video-section,
  .page-download__video-container,
  .page-download__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
}