.page-support {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #f0f0f0; /* Mặc định chữ màu sáng trên nền body tối */
  background-color: #1a1a2e; /* Nền body tối */
}

.page-support__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Cần padding-top cho phần nội dung đầu tiên để không bị header cố định che mất */
.page-support__hero-banner {
  position: relative;
  padding: 120px 0 60px; /* Desktop padding-top */
  background: linear-gradient(135deg, #2b2b4d, #1a1a2e);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 450px;
}

.page-support__hero-content {
  max-width: 800px;
  margin-bottom: 30px;
  z-index: 1;
}

.page-support__hero-title {
  font-size: 48px;
  color: #FFD700; /* Màu vàng kim cho tiêu đề chính */
  margin-bottom: 20px;
  font-weight: bold;
  line-height: 1.2;
}

.page-support__hero-subtitle {
  font-size: 18px;
  color: #f0f0f0;
  margin-bottom: 30px;
}

.page-support__hero-cta-button {
  display: inline-block;
  padding: 15px 40px;
  background: linear-gradient(90deg, #FFD700, #FFA500);
  color: #1a1a2e;
  text-decoration: none;
  border-radius: 8px;
  font-size: 20px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-support__hero-cta-button:hover {
  background: linear-gradient(90deg, #FFA500, #FFD700);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-support__hero-image-wrapper {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.page-support__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15; /* Làm mờ ảnh nền */
}

.page-support__section-title {
  font-size: 36px;
  color: #FFD700; /* Tiêu đề phần màu vàng kim */
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-support__section-description {
  font-size: 18px;
  color: #f0f0f0;
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-support__dark-bg {
  background-color: #1a1a2e;
  color: #f0f0f0;
}

.page-support__light-bg {
  background-color: #ffffff;
  color: #333333;
}

.page-support__common-issues-section {
  padding: 80px 0;
}

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

.page-support__issue-card {
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-support__issue-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-support__issue-card-icon {
  width: 120px;
  height: auto;
  margin-bottom: 20px;
  filter: drop-shadow(0 5px 5px rgba(0, 0, 0, 0.1));
}

.page-support__issue-card-title {
  font-size: 24px;
  color: #333333;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-support__issue-card-text {
  font-size: 16px;
  color: #555555;
  margin-bottom: 25px;
}

.page-support__btn-primary {
  display: inline-block;
  padding: 12px 25px;
  background: linear-gradient(90deg, #00CED1, #00BFFF);
  color: #ffffff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.page-support__btn-primary:hover {
  background: linear-gradient(90deg, #00BFFF, #00CED1);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-support__guides-section {
  padding: 80px 0;
  background-color: #2b2b4d;
}

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

.page-support__guide-card {
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-support__guide-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-support__guide-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-support__guide-card-content {
  padding: 25px;
}

.page-support__guide-card-title {
  font-size: 22px;
  color: #333333;
  margin-bottom: 10px;
  font-weight: bold;
}

.page-support__guide-card-text {
  font-size: 15px;
  color: #555555;
  margin-bottom: 20px;
}

.page-support__btn-secondary {
  display: inline-block;
  padding: 12px 25px;
  background: #f0f0f0;
  color: #FFD700;
  text-decoration: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  border: 2px solid #FFD700;
  transition: all 0.3s ease;
}

.page-support__btn-secondary:hover {
  background: #FFD700;
  color: #ffffff;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-support__faq-section {
  padding: 80px 0;
}

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

.page-support__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  background-color: #2b2b4d;
}

.page-support__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 20px;
  opacity: 0;
}

.page-support__faq-item.active .page-support__faq-answer {
  max-height: 2000px !important;
  padding: 20px !important;
  opacity: 1;
  background: #3a3a5e;
  border-radius: 0 0 8px 8px;
  color: #f0f0f0;
}

.page-support__faq-answer p {
  margin-bottom: 10px;
  color: #f0f0f0;
}

.page-support__faq-answer a {
  color: #00CED1; /* Màu xanh nước biển cho link trong FAQ */
  text-decoration: underline;
}

.page-support__faq-answer a:hover {
  color: #00BFFF;
}

.page-support__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #2b2b4d;
  border: 1px solid #3a3a5e;
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-support__faq-question:hover {
  background: #3a3a5e;
  border-color: #4a4a6e;
}

.page-support__faq-question:active {
  background: #4a4a6e;
}

.page-support__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none;
  color: #FFD700;
}

.page-support__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: #FFD700;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: rgba(255, 215, 0, 0.1);
}

.page-support__faq-item.active .page-support__faq-toggle {
  color: #00CED1;
  transform: rotate(45deg);
}

.page-support__contact-section {
  padding: 80px 0;
  text-align: center;
}

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

.page-support__contact-card {
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-support__contact-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-support__contact-icon {
  width: 100px;
  height: auto;
  margin-bottom: 20px;
}

.page-support__contact-title {
  font-size: 24px;
  color: #333333;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-support__contact-text {
  font-size: 16px;
  color: #555555;
  margin-bottom: 25px;
}

.page-support__legal-links-section {
  padding: 60px 0;
  text-align: center;
}

.page-support__legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.page-support__legal-link {
  color: #00CED1; /* Màu xanh nước biển cho link pháp lý */
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
  padding: 10px 20px;
  border: 1px solid #00CED1;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.page-support__legal-link:hover {
  background-color: #00CED1;
  color: #1a1a2e;
  box-shadow: 0 4px 12px rgba(0, 206, 209, 0.3);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-support__hero-title {
    font-size: 40px;
  }
  .page-support__hero-subtitle {
    font-size: 16px;
  }
  .page-support__section-title {
    font-size: 30px;
  }
  .page-support__section-description {
    font-size: 16px;
  }
  .page-support__issue-card-title, .page-support__contact-title {
    font-size: 22px;
  }
  .page-support__guide-card-title {
    font-size: 20px;
  }
}

@media (max-width: 768px) {
  .page-support__hero-banner {
    padding-top: 160px !important; /* Mobile padding-top */
    padding-bottom: 40px;
    min-height: 400px;
  }
  .page-support__hero-title {
    font-size: 32px;
    margin-bottom: 15px;
  }
  .page-support__hero-subtitle {
    font-size: 15px;
    margin-bottom: 25px;
  }
  .page-support__hero-cta-button {
    padding: 12px 30px;
    font-size: 18px;
  }
  .page-support__section-title {
    font-size: 26px;
    margin-bottom: 15px;
  }
  .page-support__section-description {
    font-size: 15px;
    margin-bottom: 30px;
  }
  .page-support__common-issues-section,
  .page-support__guides-section,
  .page-support__faq-section,
  .page-support__contact-section,
  .page-support__legal-links-section {
    padding: 40px 0;
  }
  .page-support__issue-card,
  .page-support__guide-card,
  .page-support__contact-card {
    padding: 20px;
  }
  .page-support__issue-card-icon,
  .page-support__contact-icon {
    width: 80px;
  }
  .page-support__issue-card-title,
  .page-support__contact-title {
    font-size: 20px;
  }
  .page-support__guide-card-title {
    font-size: 18px;
  }
  .page-support__issue-card-text,
  .page-support__guide-card-text,
  .page-support__contact-text {
    font-size: 14px;
  }
  .page-support__btn-primary,
  .page-support__btn-secondary {
    padding: 10px 20px;
    font-size: 15px;
  }
  .page-support__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  .page-support__faq-question h3 {
    font-size: 16px;
    width: calc(100% - 40px);
  }
  .page-support__faq-toggle {
    margin-left: 10px;
    width: 28px;
    height: 28px;
    font-size: 24px;
  }
  .page-support__faq-answer {
    padding: 0 15px;
  }
  .page-support__faq-item.active .page-support__faq-answer {
    padding: 15px !important;
  }
  .page-support__legal-link {
    padding: 8px 15px;
    font-size: 14px;
  }
  .page-support img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-support__section,
  .page-support__card,
  .page-support__container,
  .page-support__issue-card,
  .page-support__guide-card,
  .page-support__contact-card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}