/* style/download.css */
/* body đã padding-top: var(--header-offset) từ shared.css */
/* Trang này không được thêm padding-top: var(--header-offset) để tránh trùng lặp */

:root {
  --color-primary: #11A84E;
  --color-secondary: #22C768;
  --color-button-gradient-start: #2AD16F;
  --color-button-gradient-end: #13994A;
  --color-card-bg: #11271B;
  --color-background: #08160F;
  --color-text-main: #F2FFF6;
  --color-text-secondary: #A7D9B8;
  --color-border: #2E7A4E;
  --color-glow: #57E38D;
  --color-gold: #F2C14E;
  --color-divider: #1E3A2A;
  --color-deep-green: #0A4B2C;
}

.page-download {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text-main); /* Mặc định chữ trắng cho nền tối */
  background-color: var(--color-background); /* Nền tổng thể của trang */
}

.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 0 60px 0; /* Chỉ 10px top padding, body đã có header-offset */
  text-align: center;
  background-color: var(--color-deep-green);
  overflow: hidden;
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-height: 700px; /* Giới hạn chiều cao cho ảnh hero */
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-download__hero-content {
  position: relative;
  z-index: 10;
  max-width: 900px;
  padding: 40px 20px;
  background-color: rgba(8, 22, 15, 0.7); /* Nền tối nhẹ cho text trên ảnh */
  border-radius: 10px;
  margin-top: -100px; /* Kéo nội dung lên một chút để chồng lên ảnh */
}

.page-download__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  color: var(--color-gold);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: bold;
}

.page-download__hero-description {
  font-size: 1.1rem;
  color: var(--color-text-main);
  margin-bottom: 30px;
}

.page-download__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  white-space: normal; /* Cho phép xuống dòng */
  word-wrap: break-word; /* Ngắt từ khi cần */
  box-sizing: border-box;
  max-width: 100%;
}

.page-download__btn-primary {
  background: var(--color-button-gradient-start);
  background: linear-gradient(180deg, var(--color-button-gradient-start) 0%, var(--color-button-gradient-end) 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  filter: brightness(1.1);
}

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

.page-download__btn-secondary:hover {
  background-color: var(--color-gold);
  color: var(--color-background);
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: var(--color-gold);
  text-align: center;
  margin-bottom: 50px;
  font-weight: bold;
  line-height: 1.3;
}

.page-download__dark-section {
  background-color: var(--color-card-bg);
  padding: 60px 0;
  color: var(--color-text-main);
}

.page-download__why-download-section {
  padding: 60px 0;
}

.page-download__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__feature-card {
  background-color: var(--color-background);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease;
}

.page-download__feature-card:hover {
  transform: translateY(-5px);
}

.page-download__feature-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-download__feature-title {
  font-size: 1.5rem;
  color: var(--color-gold);
  margin-bottom: 15px;
}

.page-download__feature-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.page-download__how-to-download-section {
  padding: 60px 0;
  background-color: var(--color-background);
}

.page-download__download-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.page-download__download-platform {
  background-color: var(--color-card-bg);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
}

.page-download__platform-title {
  font-size: 1.8rem;
  color: var(--color-gold);
  margin-bottom: 25px;
  text-align: center;
}

.page-download__qr-code {
  width: 100%;
  max-width: 300px;
  height: auto;
  display: block;
  margin: 0 auto 25px auto;
  border: 5px solid var(--color-gold);
  border-radius: 5px;
}

.page-download__step-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-download__step-item {
  font-size: 1rem;
  color: var(--color-text-main);
  margin-bottom: 15px;
  position: relative;
  padding-left: 30px;
}

.page-download__step-item strong {
  color: var(--color-gold);
}

.page-download__step-item::before {
  content: counter(step-counter);
  counter-increment: step-counter;
  position: absolute;
  left: 0;
  top: 0;
  background-color: var(--color-primary);
  color: #ffffff;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.9rem;
}

.page-download__qr-section {
  text-align: center;
  margin-top: 60px;
  padding: 40px 20px;
  background-color: var(--color-deep-green);
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

.page-download__qr-title {
  font-size: 2rem;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.page-download__qr-description {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__qr-codes {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.page-download__qr-code-item {
  text-align: center;
}

.page-download__qr-image {
  width: 100%;
  max-width: 250px;
  height: auto;
  display: block;
  margin: 0 auto 15px auto;
  border: 5px solid var(--color-gold);
  border-radius: 5px;
}

.page-download__qr-code-item p {
  font-size: 1.1rem;
  color: var(--color-text-main);
  margin: 0;
}

.page-download__features-section {
  padding: 60px 0;
}

.page-download__feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__feature-item {
  background-color: var(--color-background);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
}

.page-download__item-title {
  font-size: 1.6rem;
  color: var(--color-gold);
  margin-bottom: 15px;
}

.page-download__item-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.page-download__text-link {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
  margin-right: 15px;
  transition: color 0.3s ease;
}

.page-download__text-link:hover {
  color: var(--color-gold);
  text-decoration: underline;
}

.page-download__troubleshooting-section {
  padding: 60px 0;
  background-color: var(--color-background);
}

.page-download__troubleshooting-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__troubleshooting-card {
  background-color: var(--color-card-bg);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
}

.page-download__card-title {
  font-size: 1.6rem;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.page-download__bullet-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-download__bullet-list li {
  font-size: 1rem;
  color: var(--color-text-main);
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
}

.page-download__bullet-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: bold;
}

.page-download__faq-section {
  padding: 60px 0;
}

.page-download__faq-list {
  margin-top: 40px;
}

.page-download__faq-item {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  counter-reset: step-counter;
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  background-color: var(--color-card-bg);
  color: var(--color-text-main);
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s ease;
  list-style: none; /* Hide default marker for details/summary */
}

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

.page-download__faq-item summary {
  display: flex; /* Ensure summary behaves like flex container */
  justify-content: space-between;
  align-items: center;
}

.page-download__faq-question:hover {
  background-color: var(--color-deep-green);
}

.page-download__faq-toggle {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-gold);
  margin-left: 15px;
}

.page-download__faq-answer {
  padding: 20px 25px;
  background-color: var(--color-background);
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  border-top: 1px solid var(--color-divider);
}

.page-download__cta-bottom-section {
  padding: 60px 0;
  text-align: center;
  background-color: var(--color-deep-green);
}

.page-download__cta-bottom-section .page-download__section-title {
  margin-bottom: 20px;
}

.page-download__cta-description {
  font-size: 1.1rem;
  color: var(--color-text-main);
  max-width: 900px;
  margin: 0 auto 30px auto;
}

/* ==================================================================
   Responsive Styles
   ================================================================== */

/* Tablet (769px - 1024px) */
@media (max-width: 1024px) {
  .page-download__hero-content {
    margin-top: -80px;
  }

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

  .page-download__hero-description {
    font-size: 1rem;
  }

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

  .page-download__feature-icon {
    width: 80px;
    height: 80px;
  }

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

  .page-download__platform-title {
    font-size: 1.6rem;
  }

  .page-download__qr-title {
    font-size: 1.8rem;
  }

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

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

  .page-download__faq-question {
    font-size: 1.1rem;
  }
}

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

  .page-download__container {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px !important;
  }

  .page-download__hero-content {
    padding: 20px 15px;
    margin-top: -60px; /* Adjust overlap for mobile */
  }

  .page-download__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-download__hero-description {
    font-size: 0.95rem;
    margin-bottom: 20px;
  }

  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 0 15px;
  }

  .page-download__btn-primary,
  .page-download__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    font-size: 1rem;
    padding: 12px 20px;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
  }

  .page-download__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 30px;
  }

  .page-download__feature-grid,
  .page-download__download-steps-grid,
  .page-download__feature-list,
  .page-download__troubleshooting-grid {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 25px;
  }

  .page-download__feature-card,
  .page-download__download-platform,
  .page-download__feature-item,
  .page-download__troubleshooting-card {
    padding: 25px;
  }

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

  .page-download__qr-section {
    margin-top: 40px;
    padding: 30px 15px;
  }

  .page-download__qr-title {
    font-size: 1.6rem;
  }

  .page-download__qr-description {
    font-size: 1rem;
  }

  .page-download__qr-codes {
    flex-direction: column;
    gap: 25px;
  }

  .page-download__qr-image {
    max-width: 200px;
  }

  .page-download__text-link {
    display: block;
    margin-right: 0;
    margin-bottom: 10px;
  }

  .page-download__faq-question {
    padding: 15px 20px;
    font-size: 1rem;
  }

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

  .page-download__cta-bottom-section .page-download__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }

  .page-download__cta-description {
    font-size: 1rem;
  }

  /* Image and Video responsiveness */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }

  .page-download video,
  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }

  .page-download__hero-image-wrapper,
  .page-download__video-section,
  .page-download__video-container,
  .page-download__video-wrapper,
  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__cta-buttons,
  .page-download__button-group,
  .page-download__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Ensure no overflow */
  }

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

/* Ensure no image filters are used */
.page-download img {
  filter: none; /* Explicitly disable any potential filters */
}

.page-download__hero-section h1 {
  /* H1 font-size already uses clamp, no fixed large values */
}