:root {
    --page-download-primary-color: #11A84E;
    --page-download-secondary-color: #22C768;
    --page-download-bg-color: #08160F; /* Nền tối */
    --page-download-card-bg: #11271B; /* Nền card tối */
    --page-download-text-main: #F2FFF6; /* Chữ sáng */
    --page-download-text-secondary: #A7D9B8; /* Chữ phụ sáng */
    --page-download-border-color: #2E7A4E;
    --page-download-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --page-download-glow-color: #57E38D;
    --page-download-gold-color: #F2C14E;
    --page-download-divider-color: #1E3A2A;
    --page-download-deep-green: #0A4B2C;
}

.page-download {
    font-family: Arial, sans-serif;
    color: var(--page-download-text-main); /* Mặc định chữ sáng trên nền tối */
    background-color: var(--page-download-bg-color);
    line-height: 1.6;
}

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

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

.page-download__hero-image-wrapper {
    width: 100%;
    max-height: 675px; /* Giới hạn chiều cao để không quá lớn */
    overflow: hidden;
}

.page-download__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    filter: brightness(0.8); /* Làm tối nhẹ ảnh để chữ dễ đọc hơn */
}

.page-download__hero-content {
    max-width: 800px;
    padding: 30px 20px 0;
    z-index: 1;
}

.page-download__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem); /* H1 font-size clamp */
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--page-download-gold-color); /* Sử dụng màu vàng cho H1 nổi bật */
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

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

.page-download__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Cho phép các nút xuống dòng trên di động */
}

.page-download__btn-primary,
.page-download__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    white-space: normal; /* Cho phép chữ xuống dòng */
    word-wrap: break-word; /* Đảm bảo chữ xuống dòng */
    text-align: center;
    box-sizing: border-box;
    max-width: 100%;
}

.page-download__btn-primary {
    background: var(--page-download-button-gradient);
    color: #ffffff; /* Luôn dùng trắng cho chữ trên nút gradient */
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-download__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    opacity: 0.9;
}

.page-download__btn-secondary {
    background: transparent;
    color: var(--page-download-glow-color); /* Màu glow cho nút phụ */
    border: 2px solid var(--page-download-glow-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-secondary:hover {
    background: var(--page-download-glow-color);
    color: var(--page-download-bg-color); /* Chữ tối trên nền sáng khi hover */
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* General Section Styling */
.page-download__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--page-download-gold-color);
    text-align: center;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.3;
}

.page-download__section-intro {
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
    color: var(--page-download-text-secondary);
}

/* Why Download Section */
.page-download__why-download-section {
    padding: 80px 0;
    background-color: var(--page-download-bg-color);
}

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

.page-download__feature-card {
    background-color: var(--page-download-card-bg);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--page-download-border-color);
    transition: transform 0.3s ease;
}

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

.page-download__feature-icon {
    width: 100%; /* Đảm bảo hình ảnh đủ lớn */
    max-width: 200px; /* Giới hạn kích thước biểu tượng */
    height: auto;
    margin-bottom: 20px;
    object-fit: contain;
    min-width: 200px; /* Đảm bảo kích thước tối thiểu */
    min-height: 200px;
}

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

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

/* How to Download Section */
.page-download__how-to-download-section {
    padding: 80px 0;
    background-color: var(--page-download-deep-green);
}

.page-download__device-guide {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.page-download__device-card {
    background-color: var(--page-download-card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--page-download-border-color);
    max-width: 550px;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
}

.page-download__device-title {
    font-size: 2rem;
    color: var(--page-download-gold-color);
    margin-bottom: 25px;
}

.page-download__device-image {
    width: 100%;
    height: auto;
    max-width: 400px;
    margin: 0 auto 30px auto;
    display: block;
    border-radius: 8px;
    object-fit: cover;
    min-width: 200px; /* Đảm bảo kích thước tối thiểu */
    min-height: 200px;
}

.page-download__guide-list {
    text-align: left;
    margin: 0 0 30px 0;
    padding-left: 20px;
    list-style-type: decimal;
    color: var(--page-download-text-main);
}

.page-download__guide-list li {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.page-download__guide-list li strong {
    color: var(--page-download-glow-color);
}

.page-download__btn-download {
    width: auto;
    min-width: 200px;
}

/* Troubleshooting Section */
.page-download__troubleshooting-section {
    padding: 80px 0;
    background-color: var(--page-download-bg-color); /* Darker background */
    color: var(--page-download-text-main);
}

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

.page-download__trouble-card {
    background-color: var(--page-download-card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--page-download-border-color);
    transition: transform 0.3s ease;
}

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

.page-download__trouble-title {
    font-size: 1.4rem;
    color: var(--page-download-gold-color);
    margin-bottom: 15px;
}

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

/* App Features Section */
.page-download__app-features-section {
    padding: 80px 0;
    background-color: var(--page-download-deep-green);
}

.page-download__features-content {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-top: 40px;
    flex-wrap: wrap; /* Cho phép wrap trên di động */
}

.page-download__text-block {
    flex: 1;
    min-width: 300px;
}

.page-download__content-subtitle {
    font-size: 1.6rem;
    color: var(--page-download-glow-color);
    margin-top: 25px;
    margin-bottom: 15px;
}

.page-download__text-block p {
    font-size: 1.05rem;
    color: var(--page-download-text-main);
    margin-bottom: 15px;
}

.page-download__image-block {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.page-download__features-image {
    width: 100%;
    height: auto;
    max-width: 600px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    object-fit: cover;
    min-width: 200px; /* Đảm bảo kích thước tối thiểu */
    min-height: 200px;
}

.page-download__cta-bottom {
    text-align: center;
    margin-top: 60px;
}

/* FAQ Section */
.page-download__faq-section {
    padding: 80px 0;
    background-color: var(--page-download-bg-color);
}

.page-download__faq-list {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-download__faq-item {
    background-color: var(--page-download-card-bg);
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--page-download-border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.page-download__faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--page-download-gold-color);
    list-style: none; /* Ẩn marker mặc định của summary */
    transition: background-color 0.3s ease;
}

.page-download__faq-item summary::-webkit-details-marker {
    display: none; /* Ẩn marker trên Webkit */
}

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

.page-download__faq-qtext {
    flex-grow: 1;
}

.page-download__faq-toggle {
    font-size: 1.8rem;
    line-height: 1;
    margin-left: 15px;
    color: var(--page-download-glow-color);
}

.page-download__faq-answer {
    padding: 0 25px 20px;
    font-size: 1rem;
    color: var(--page-download-text-secondary);
    line-height: 1.6;
}

/* Contact CTA Section */
.page-download__contact-cta-section {
    padding: 80px 0;
    background-color: var(--page-download-deep-green);
    text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-download__hero-section {
        padding: 10px 0 40px 0;
    }
    .page-download__main-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }
    .page-download__section-title {
        font-size: clamp(1.6rem, 4vw, 2.5rem);
    }
    .page-download__features-content {
        flex-direction: column;
    }
    .page-download__image-block {
        order: -1; /* Đặt hình ảnh lên trên văn bản trên di động */
    }
}

@media (max-width: 768px) {
    .page-download__container {
        padding: 0 15px;
    }

    .page-download__hero-section {
        padding: 10px 0 30px 0;
    }

    .page-download__main-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin-bottom: 15px;
    }

    .page-download__description {
        font-size: 1rem;
        margin-bottom: 20px;
    }

    .page-download__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

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

    .page-download__why-download-section,
    .page-download__how-to-download-section,
    .page-download__troubleshooting-section,
    .page-download__app-features-section,
    .page-download__faq-section,
    .page-download__contact-cta-section {
        padding: 40px 0;
    }

    .page-download__section-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
        margin-bottom: 15px;
    }

    .page-download__section-intro {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }

    .page-download__feature-card,
    .page-download__trouble-card,
    .page-download__device-card {
        padding: 25px;
    }

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

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

    .page-download__guide-list li,
    .page-download__feature-text,
    .page-download__trouble-text,
    .page-download__text-block p,
    .page-download__faq-answer {
        font-size: 0.95rem;
    }

    .page-download__content-subtitle {
        font-size: 1.4rem;
    }

    /* Hình ảnh và video trên di động */
    .page-download img,
    .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,
    .page-download__features-content,
    .page-download__image-block,
    .page-download__text-block,
    .page-download__faq-list,
    .page-download__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
    }

    .page-download__why-download-section .page-download__container,
    .page-download__how-to-download-section .page-download__container,
    .page-download__troubleshooting-section .page-download__container,
    .page-download__app-features-section .page-download__container,
    .page-download__faq-section .page-download__container,
    .page-download__contact-cta-section .page-download__container {
        padding-left: 15px !important;
        padding-right: 15px !important;
    }

    .page-download__hero-content {
        padding: 20px 15px 0;
    }

    .page-download__faq-item summary {
        padding: 15px 20px;
        font-size: 1.1rem;
    }
    .page-download__faq-answer {
        padding: 0 20px 15px;
    }
}