/* style/support.css */
/* body đã padding-top: var(--header-offset); trang này không được thêm padding-top tương tự */

:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --login-color: #EA7C07;
  --background-color: #0a0a0a; /* Body background is dark */
  --text-color-light: #ffffff;
  --text-color-dark: #333333;
  --card-bg-dark: rgba(255, 255, 255, 0.08);
  --border-color-dark: rgba(255, 255, 255, 0.15);
}

.page-support {
  background-color: var(--background-color);
  color: var(--text-color-light); /* Light text for dark body background */
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

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

.page-support__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Minimal top padding, body handles header offset */
  padding-bottom: 60px;
  overflow: hidden;
  text-align: center;
}

.page-support__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

.page-support__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.3; /* Subtle overlay for text readability */
}

.page-support__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 40px 20px;
  background: rgba(0, 0, 0, 0.6); /* Dark overlay for text */
  border-radius: 10px;
  margin-top: 60px;
}

.page-support__main-title {
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
  font-size: clamp(2.2rem, 4vw, 3.5rem); /* Responsive font size for H1 */
}

.page-support__hero-description {
  font-size: 1.15rem;
  color: var(--text-color-light);
  margin-bottom: 30px;
}

.page-support__section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 40px;
  padding-top: 40px;
}

.page-support__intro-section, 
.page-support__faq-section, 
.page-support__guides-section, 
.page-support__contact-section, 
.page-support__download-app-section {
  padding: 60px 0;
}

.page-support__dark-section {
  background-color: var(--background-color);
  color: var(--text-color-light);
}

.page-support__text-block {
  font-size: 1.05rem;
  margin-bottom: 20px;
  color: var(--text-color-light);
}

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

.page-support__btn-primary, .page-support__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-support__btn-primary {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  border: 2px solid var(--primary-color);
}

.page-support__btn-primary:hover {
  background-color: darken(var(--primary-color), 10%);
  border-color: darken(var(--primary-color), 10%);
}

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

.page-support__btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

/* Specific button for login color */
a.page-support__btn-primary[href*="login.html"],
a.page-support__btn-primary[href*="register.html"] {
  background-color: var(--login-color);
  border-color: var(--login-color);
}
a.page-support__btn-primary[href*="login.html"]:hover,
a.page-support__btn-primary[href*="register.html"]:hover {
  background-color: darken(var(--login-color), 10%);
  border-color: darken(var(--login-color), 10%);
}

.page-support__faq-list {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.page-support__faq-item {
  background-color: var(--card-bg-dark);
  border: 1px solid var(--border-color-dark);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 10px;
  color: var(--text-color-light);
}

.page-support__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  font-size: 1.15rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none; /* Remove default marker */
  color: var(--primary-color);
}

.page-support__faq-item summary::-webkit-details-marker {
  display: none; /* Remove default marker for Webkit browsers */
}

.page-support__faq-qtext {
  flex-grow: 1;
  color: var(--text-color-light);
}

.page-support__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 15px;
  color: var(--primary-color);
}

.page-support__faq-answer {
  padding: 0 20px 20px;
  font-size: 1rem;
  color: var(--text-color-light);
}

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

.page-support__guide-category {
  background-color: var(--card-bg-dark);
  border: 1px solid var(--border-color-dark);
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 30px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-support__category-title {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 20px;
  text-align: left;
  width: 100%;
}

.page-support__contact-list {
  list-style: none;
  padding: 0;
  margin: 30px 0;
}

.page-support__contact-item {
  font-size: 1.1rem;
  margin-bottom: 15px;
  color: var(--text-color-light);
}

.page-support__contact-item strong {
  color: var(--primary-color);
}

.page-support__link-text {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-support__link-text:hover {
  color: darken(var(--primary-color), 10%);
  text-decoration: underline;
}

.page-support__image-container {
  margin: 20px 0;
  width: 100%;
  max-width: 800px; /* Default max-width for content images */
  display: block;
  overflow: hidden;
  border-radius: 8px;
  box-sizing: border-box;
}

.page-support__image-container--right {
  float: right;
  margin-left: 30px;
  margin-bottom: 20px;
}

.page-support__image-container--left {
  float: left;
  margin-right: 30px;
  margin-bottom: 20px;
}

.page-support__content-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  min-width: 200px;
  min-height: 200px;
}

/* Clear floats */
.page-support__guide-category::after {
  content: "";
  display: table;
  clear: both;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .page-support__container {
    padding: 20px;
  }
  .page-support__hero-content {
    padding: 30px 15px;
  }
  .page-support__main-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }
  .page-support__section-title {
    font-size: 2rem;
  }
  .page-support__faq-list {
    grid-template-columns: 1fr;
  }
  .page-support__image-container--right, .page-support__image-container--left {
    float: none;
    margin: 20px auto;
    max-width: 100%;
  }
  .page-support__content-image {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .page-support {
    font-size: 16px;
    line-height: 1.6;
  }
  .page-support__hero-section {
    padding-top: 10px !important; /* body handles --header-offset, this is decorative */
    padding-bottom: 40px;
  }
  .page-support__hero-content {
    margin-top: 40px;
    padding: 20px 15px;
  }
  .page-support__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
  }
  .page-support__hero-description {
    font-size: 1rem;
  }
  .page-support__section-title {
    font-size: 1.8rem;
    padding-top: 20px;
  }
  .page-support__text-block {
    font-size: 0.95rem;
  }
  .page-support__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }
  .page-support__btn-primary, .page-support__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
  }
  
  /* Mobile image and video responsive rules */
  .page-support img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-support__section, .page-support__card, .page-support__container, .page-support__hero-section, .page-support__intro-section, .page-support__faq-section, .page-support__guides-section, .page-support__contact-section, .page-support__download-app-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  .page-support__image-container, .page-support__video-container, .page-support__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-left: auto;
    margin-right: auto;
    float: none;
    overflow: hidden !important;
  }
  .page-support__guide-category {
    padding: 20px;
  }
  .page-support__category-title {
    font-size: 1.5rem;
  }
}

/* Helper for darken function, not actual CSS */
/* This is a placeholder for the logic, actual CSS would use direct colors or preprocessed values */
/* darken(color, amount) */