:root {
    --color-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --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;
}

/* style/support.css */
/* body đã padding-top: var(--header-offset) từ shared.css, không cần lặp lại */
.page-support {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text-main); /* Sử dụng màu chữ chính cho nền tối */
    background-color: var(--color-background); /* Nền tối */
}

.page-support a {
    color: var(--color-glow);
    text-decoration: none;
}

.page-support a:hover {
    text-decoration: underline;
}

.page-support__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 60px 20px;
    padding-top: 10px; /* Chỉ một khoảng đệm nhỏ cho phần đầu tiên */
    text-align: center;
    overflow: hidden;
}

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

.page-support__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4); /* Làm tối ảnh nền để chữ dễ đọc */
}

.page-support__hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px;
    background: rgba(0, 0, 0, 0.5); /* Nền mờ để chữ nổi bật hơn */
    border-radius: 10px;
}

.page-support__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    color: var(--color-text-main);
    margin-bottom: 15px;
    font-weight: bold;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

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

.page-support__btn-primary,
.page-support__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
    box-sizing: border-box;
    max-width: 100%;
}

.page-support__btn-primary {
    background: var(--color-button-gradient);
    color: #ffffff;
    border: none;
}

.page-support__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    text-decoration: none;
}

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

.page-support__btn-secondary:hover {
    background: var(--color-glow);
    color: var(--color-background);
    transform: translateY(-2px);
    text-decoration: none;
}

.page-support__content-area,
.page-support__faq-section,
.page-support__guides-section,
.page-support__contact-section,
.page-support__commitment-section,
.page-support__cta-banner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    box-sizing: border-box;
}

.page-support__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--color-text-main);
    text-align: center;
    margin-bottom: 30px;
    font-weight: bold;
    line-height: 1.3;
}

.page-support__text-block {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

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

.page-support__card {
    background-color: var(--color-card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    text-align: left;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    color: var(--color-text-main);
}

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

.page-support__card-title {
    font-size: 1.5rem;
    color: var(--color-text-main);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-support__card-title a {
    color: var(--color-text-main);
    text-decoration: none;
}

.page-support__card-title a:hover {
    color: var(--color-glow);
    text-decoration: underline;
}

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

.page-support__list {
    list-style: disc;
    padding-left: 20px;
    color: var(--color-text-secondary);
    margin-top: 10px;
}

.page-support__list li {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.page-support__read-more {
    color: var(--color-glow);
    font-weight: bold;
    margin-top: auto;
    display: inline-block;
}

.page-support__read-more:hover {
    text-decoration: underline;
}

.page-support__faq-section {
    background-color: #ffffff; /* Nền trắng cho phần FAQ */
    color: var(--color-text-contrast-fix); /* Màu chữ tối cho nền trắng */
    padding-top: 60px;
    padding-bottom: 60px;
}

.page-support__faq-section .page-support__section-title,
.page-support__faq-section .page-support__description {
    color: #333333; /* Đảm bảo chữ đen trên nền trắng */
}

.page-support__faq-list {
    max-width: 900px;
    margin: 40px auto 0 auto;
}

.page-support__faq-item {
    background-color: #f8f8f8;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.page-support__faq-item[open] {
    background-color: #e8e8e8;
}

.page-support__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    font-size: 1.15rem;
    font-weight: bold;
    color: #333333;
    cursor: pointer;
    list-style: none; /* Loại bỏ dấu mũi tên mặc định */
}

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

.page-support__faq-toggle {
    font-size: 1.5rem;
    line-height: 1;
    transition: transform 0.3s ease;
}

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

.page-support__faq-answer {
    padding: 0 20px 20px 20px;
    font-size: 1rem;
    color: #555555;
}

.page-support__contact-section {
    padding-top: 60px;
    padding-bottom: 60px;
}

.page-support__contact-section .page-support__section-title,
.page-support__contact-section .page-support__description {
    color: #333333; /* Đảm bảo chữ đen trên nền trắng */
}

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

.page-support__contact-card {
    background-color: var(--color-card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    text-align: center;
    color: var(--color-text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-support__contact-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 20px;
    min-width: 80px;
    min-height: 80px;
}

.page-support__contact-title {
    font-size: 1.4rem;
    color: var(--color-text-main);
    margin-bottom: 10px;
    font-weight: bold;
}

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

.page-support__contact-info {
    font-size: 1.1rem;
    color: var(--color-glow);
    font-weight: bold;
    margin-bottom: 20px;
}

.page-support__btn-small {
    padding: 10px 20px;
    font-size: 0.9rem;
    margin-top: auto;
}

.page-support__social-media {
    text-align: center;
    margin-top: 60px;
    border-top: 1px solid var(--color-divider);
    padding-top: 40px;
}

.page-support__social-title {
    font-size: 1.6rem;
    color: var(--color-text-main);
    margin-bottom: 25px;
}

.page-support__social-list {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

.page-support__social-link {
    color: var(--color-gold);
    font-size: 1.1rem;
    font-weight: bold;
    transition: color 0.3s ease;
}

.page-support__social-link:hover {
    color: var(--color-glow);
    text-decoration: none;
}

.page-support__commitment-section {
    padding-top: 60px;
    padding-bottom: 60px;
}

.page-support__commitment-item {
    background-color: var(--color-card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    text-align: center;
    color: var(--color-text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-support__commitment-icon {
    width: 64px;
    height: 64px;
    object-fit: contain;
    margin-bottom: 20px;
    min-width: 64px;
    min-height: 64px;
}

.page-support__commitment-title {
    font-size: 1.3rem;
    color: var(--color-text-main);
    margin-bottom: 10px;
    font-weight: bold;
}

.page-support__commitment-text {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-support__cta-banner {
    background-color: var(--color-deep-green);
    border-radius: 12px;
    text-align: center;
    padding: 50px 30px;
    margin-top: 60px;
    margin-bottom: 60px;
}

.page-support__cta-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    color: var(--color-gold);
    margin-bottom: 20px;
    font-weight: bold;
}

.page-support__cta-text {
    font-size: 1.1rem;
    color: var(--color-text-main);
    max-width: 800px;
    margin: 0 auto 30px auto;
}

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

/* Ensure all content area images are responsive */
.page-support img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Ensure all content area videos are responsive */
.page-support video,
.page-support__video {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
}

/* Ensure all video containers are responsive */
.page-support__video-section,
.page-support__video-container,
.page-support__video-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Ensure all button containers are responsive */
.page-support__cta-buttons,
.page-support__button-group,
.page-support__btn-container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

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

    .page-support__hero-section {
        padding: 40px 15px;
        padding-top: 10px !important; /* body đã xử lý header offset */
    }

    .page-support__hero-content {
        padding: 20px;
    }

    .page-support__main-title {
        font-size: 2.2rem;
    }

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

    .page-support__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        padding: 0 15px; /* Thêm padding ngang cho group nút */
    }

    .page-support__btn-primary,
    .page-support__btn-secondary,
    .page-support a[class*="button"],
    .page-support 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-support__content-area,
    .page-support__faq-section,
    .page-support__guides-section,
    .page-support__contact-section,
    .page-support__commitment-section,
    .page-support__cta-banner {
        padding: 30px 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

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

    .page-support__card {
        padding: 20px;
    }

    .page-support__card-image {
        height: 180px;
    }

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

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

    .page-support__faq-answer {
        padding: 0 15px 15px 15px;
    }

    .page-support__contact-options {
        grid-template-columns: 1fr;
    }

    .page-support__contact-card {
        padding: 20px;
    }

    .page-support__social-list {
        flex-direction: column;
        gap: 15px;
    }

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

    .page-support__cta-text {
        font-size: 1rem;
    }

    /* Mobile image responsiveness */
    .page-support img {
      max-width: 100% !important;
      width: 100% !important;
      height: auto !important;
    }

    /* Mobile video responsiveness */
    .page-support video,
    .page-support__video {
      max-width: 100% !important;
      width: 100% !important;
      height: auto !important;
      display: block !important;
    }

    /* Video containers mobile adaptation */
    .page-support__video-section,
    .page-support__video-container,
    .page-support__video-wrapper {
      max-width: 100% !important;
      width: 100% !important;
      box-sizing: border-box !important;
      padding-left: 15px;
      padding-right: 15px;
      overflow: hidden !important;
    }

    /* Video section top padding for mobile */
    .page-support__video-section {
      padding-top: 10px !important;
    }
}