/* style/about.css */

/* Biến CSS */
:root {
    --primary-color: #007bff; /* Deep Blue */
    --secondary-color: #28a745; /* Green */
    --accent-color: #FFD700; /* Gold */
    --text-light: #ffffff;
    --text-dark: #333333;
    --bg-dark: #000000;
    --bg-light: #f8f9fa;
    --card-bg-dark: rgba(255, 255, 255, 0.1);
    --card-bg-light: #ffffff;
    --border-color: #e0e0e0;
}

/* Căn chỉnh padding-top cho nội dung chính để tránh bị che bởi header cố định */
.page-about {
    padding-top: 120px; /* Desktop: Adjust based on actual header height */
    background-color: var(--bg-dark); /* Body background is dark */
    color: var(--text-light);
}

/* Responsive padding-top cho mobile */
@media (max-width: 768px) {
    .page-about {
        padding-top: 100px; /* Mobile: Adjust based on actual mobile header height */
    }
}

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

.page-about__hero-section {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
    color: var(--text-light);
}

.page-about__main-title {
    font-size: 3.2em;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
    color: var(--text-light);
}

.page-about__subtitle {
    font-size: 1.3em;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
}

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

.page-about__cta-button {
    display: inline-block;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: none;
    cursor: pointer;
    max-width: 100%; /* Ensure responsive behavior */
    box-sizing: border-box; /* Ensure responsive behavior */
    white-space: normal; /* Allow text wrap */
    word-wrap: break-word; /* Allow text wrap */
}

.page-about__btn-primary {
    background: var(--accent-color);
    color: var(--text-dark);
}

.page-about__btn-primary:hover {
    background: #e6c200;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

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

.page-about__btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-about__section-title {
    font-size: 2.5em;
    margin-bottom: 40px;
    text-align: center;
    font-weight: bold;
    color: inherit; /* Inherit color from parent section */
}

.page-about__sub-title {
    font-size: 1.8em;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 600;
    color: inherit;
}

.page-about__introduction-section,
.page-about__products-section,
.page-about__faq-section {
    padding: 80px 0;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

.page-about__dark-bg {
    color: var(--text-light);
    background-color: var(--primary-color);
}

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

.page-about__values-section,
.page-about__commitment-section,
.page-about__vision-section {
    padding: 80px 0;
    background-color: var(--primary-color);
    color: var(--text-light);
}

.page-about__content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.page-about__text-block p {
    font-size: 1.1em;
    line-height: 1.7;
    margin-bottom: 20px;
    color: inherit;
}

.page-about__image-block {
    text-align: center;
}

.page-about__image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    display: block; /* Ensure it behaves as a block element for max-width */
    margin: 0 auto; /* Center image */
}

.page-about__values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-about__value-card {
    background: var(--card-bg-dark);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.page-about__value-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

.page-about__value-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
    filter: brightness(1.1); /* Slight brightness adjustment for visibility on dark backgrounds, not color change */
}

.page-about__value-title {
    font-size: 1.6em;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.page-about__value-description {
    font-size: 1em;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
}

.page-about__product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-about__product-card {
    background: var(--card-bg-light);
    color: var(--text-dark);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    border: 1px solid var(--border-color);
}

.page-about__product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-about__product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.page-about__product-title {
    font-size: 1.5em;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.page-about__product-description {
    font-size: 1em;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.page-about__btn-inline {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: var(--text-light);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease;
    margin-top: 15px;
    max-width: 100%; /* Ensure responsive behavior */
    box-sizing: border-box; /* Ensure responsive behavior */
    white-space: normal; /* Allow text wrap */
    word-wrap: break-word; /* Allow text wrap */
}

.page-about__btn-inline:hover {
    background-color: #218838;
}

.page-about__commitment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.page-about__commitment-content .page-about__text-block p {
    color: rgba(255, 255, 255, 0.8);
}

.page-about__commitment-content .page-about__btn-secondary {
    margin-top: 20px;
    background: var(--accent-color);
    color: var(--text-dark);
    border: none;
}

.page-about__commitment-content .page-about__btn-secondary:hover {
    background: #e6c200;
    color: var(--text-dark);
}

.page-about__vision-content p {
    font-size: 1.1em;
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
}

/* FAQ Section */
.page-about__faq-list {
  margin-top: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: var(--card-bg-light);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-about__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

.page-about__faq-question:active {
  background: #eeeeee;
}

.page-about__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-dark);
  pointer-events: none; /* Prevent h3 from blocking click event */
}

.page-about__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: #666;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Prevent icon from blocking click event */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-about__faq-item.active .page-about__faq-toggle {
  color: var(--primary-color);
  transform: rotate(45deg); /* Change to X or rotate for active state */
}

.page-about__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 15px;
  opacity: 0;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 2000px !important; /* Use !important and a large value to ensure it expands */
  padding: 20px 15px !important;
  opacity: 1;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
  color: var(--text-dark);
}

.page-about__faq-item.active .page-about__faq-answer p {
    color: var(--text-dark);
}

/* Footer */
.page-about__footer {
    text-align: center;
    padding: 40px 20px;
    background-color: #1a1a1a;
    color: #cccccc;
    font-size: 0.9em;
    margin-top: 50px;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-about__main-title {
        font-size: 2.8em;
    }
    .page-about__subtitle {
        font-size: 1.2em;
    }
    .page-about__section-title {
        font-size: 2em;
    }
    .page-about__content-grid,
    .page-about__commitment-content {
        grid-template-columns: 1fr;
    }
    .page-about__image-block {
        order: -1; /* Image first on mobile for some sections */
        margin-bottom: 30px;
    }
    .page-about__values-grid {
        grid-template-columns: 1fr;
    }
    .page-about__product-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-about {
        padding-top: 100px; /* Mobile: Adjust based on actual mobile header height */
    }
    .page-about__hero-section {
        padding: 60px 15px;
    }
    .page-about__main-title {
        font-size: 2.2em;
    }
    .page-about__subtitle {
        font-size: 1em;
    }
    .page-about__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .page-about__cta-button {
        padding: 12px 25px;
        font-size: 1em;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        white-space: normal;
        word-wrap: break-word;
    }
    .page-about__introduction-section,
    .page-about__products-section,
    .page-about__faq-section,
    .page-about__values-section,
    .page-about__commitment-section,
    .page-about__vision-section {
        padding: 50px 0;
    }
    .page-about__container {
        padding: 0 15px;
    }
    .page-about__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
    }
    .page-about__sub-title {
        font-size: 1.5em;
    }
    .page-about__text-block p {
        font-size: 0.95em;
    }
    .page-about__image {
        border-radius: 4px;
    }
    .page-about__value-icon {
        width: 80px;
        height: 80px;
    }
    .page-about__value-title {
        font-size: 1.4em;
    }
    .page-about__value-card {
        padding: 25px;
    }
    .page-about__product-card {
        padding: 20px;
    }
    .page-about__product-image {
        height: 180px;
    }
    .page-about__product-title {
        font-size: 1.3em;
    }
    /* FAQ Mobile Specifics */
    .page-about__faq-question {
        padding: 15px;
        flex-wrap: wrap;
    }
    .page-about__faq-question h3 {
        font-size: 1em;
        margin-bottom: 0;
        width: calc(100% - 40px);
    }
    .page-about__faq-toggle {
        margin-left: 10px;
        width: 24px;
        height: 24px;
        font-size: 20px;
    }
    .page-about__faq-answer {
        padding: 0 15px;
    }
    .page-about__faq-item.active .page-about__faq-answer {
        padding: 15px !important;
    }
    .page-about__btn-inline {
        font-size: 0.9em;
        padding: 8px 16px;
    }
    .page-about__commitment-content .page-about__text-block {
        padding: 0 15px;
    }
}

/* Global image responsive rules - MUST BE HERE */
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__text-block,
  .page-about__image-block,
  .page-about__value-card,
  .page-about__product-card,
  .page-about__faq-item,
  .page-about__faq-question,
  .page-about__faq-answer {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    /* padding-left and padding-right should be handled by .page-about__container or specific sections */
  }

  .page-about__hero-section,
  .page-about__introduction-section,
  .page-about__values-section,
  .page-about__products-section,
  .page-about__commitment-section,
  .page-about__faq-section,
  .page-about__vision-section {
    padding-left: 0 !important;
    padding-right: 0 !important;
    overflow-x: hidden !important; /* Prevent horizontal scroll */
  }

  .page-about__hero-section .page-about__container,
  .page-about__introduction-section .page-about__container,
  .page-about__values-section .page-about__container,
  .page-about__products-section .page-about__container,
  .page-about__commitment-section .page-about__container,
  .page-about__faq-section .page-about__container,
  .page-about__vision-section .page-about__container {
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  .page-about__cta-buttons {
    flex-direction: column !important;
    gap: 15px !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  .page-about__cta-button,
  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about__btn-inline {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
}