:root {
    --primary-color: #11A84E;
    --secondary-color: #22C768;
    --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --card-bg: #11271B;
    --background: #08160F;
    --text-main: #F2FFF6;
    --text-secondary: #A7D9B8;
    --border: #2E7A4E;
    --glow: #57E38D;
    --gold: #F2C14E;
    --divider: #1E3A2A;
    --deep-green: #0A4B2C;
    --header-offset: 100px; /* Giá trị mặc định, sẽ được ghi đè bởi shared.css */
}

/* style/download.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không được thêm lại */
.page-download {
    font-family: 'Arial', sans-serif;
    color: var(--text-main); /* Sử dụng biến màu từ custom palette */
    background-color: var(--background); /* Sử dụng biến màu từ custom palette */
    line-height: 1.6;
}

.page-download__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10px 0 60px 0; /* Chỉ 10px top padding */
    background-color: var(--card-bg); /* Sử dụng màu nền tối */
}

.page-download__hero-image-wrapper {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    box-sizing: border-box;
}

.page-download__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 600px; /* Giới hạn chiều cao cho hình ảnh hero */
}

.page-download__hero-content {
    max-width: 900px;
    margin-top: 40px;
    padding: 0 20px;
}

.page-download__main-title {
    font-size: clamp(2em, 5vw, 3em); /* Sử dụng clamp cho kích thước tiêu đề H1 */
    color: var(--text-main);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

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

.page-download__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Cho phép wrap trên mobile */
}

.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: 1.1em;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-download__btn-primary {
    background: var(--button-gradient);
    color: var(--text-main); /* Trắng nhạt */
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.page-download__btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 2px solid var(--border); /* Màu border */
}

.page-download__btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.page-download__section {
    padding: 60px 20px;
    text-align: center;
    background-color: var(--background);
}

.page-download__section-title {
    font-size: clamp(1.8em, 4vw, 2.5em);
    color: var(--text-main);
    margin-bottom: 30px;
    font-weight: 700;
}

.page-download__container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
}

.page-download__text-block {
    font-size: 1.05em;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-download__feature-item {
    background-color: var(--card-bg); /* Màu nền thẻ */
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--divider);
}

.page-download__feature-title {
    font-size: 1.5em;
    color: var(--text-main);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-download__feature-item p {
    color: var(--text-secondary);
    font-size: 1em;
}

.page-download__how-to-download {
    background-color: var(--card-bg); /* Nền tối hơn cho phần này */
    padding-bottom: 80px;
}

.page-download__download-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    counter-reset: step-counter;
    gap: 40px;
    margin-top: 40px;
}

.page-download__platform-guide {
    flex: 1 1 45%;
    min-width: 300px;
    background-color: var(--background);
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--divider);
}

.page-download__platform-title {
    font-size: 1.8em;
    color: var(--text-main);
    margin-bottom: 25px;
    font-weight: 600;
    text-align: center;
}

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

.page-download__step-list li {
    color: var(--text-secondary);
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    font-size: 1em;
}

.page-download__step-list li::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    background-color: var(--deep-green); /* Màu xanh đậm */
    color: var(--text-main);
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9em;
}

.page-download__qr-code-wrapper {
    text-align: center;
    margin-top: 20px;
}

.page-download__qr-code {
    width: 200px;
    height: 200px;
    border: 5px solid var(--border);
    border-radius: 10px;
    display: block;
    margin: 0 auto 15px auto;
    max-width: 100%; /* Đảm bảo responsive */
    height: auto;
}

.page-download__qr-label {
    color: var(--text-secondary);
    font-size: 0.95em;
}

.page-download__cta-buttons--center {
    margin-top: 60px;
}

.page-download__app-features {
    background-color: var(--background);
}

.page-download__features-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
    margin-bottom: 60px;
}

.page-download__feature-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--divider);
}

.page-download__feature-card-title {
    font-size: 1.5em;
    color: var(--text-main);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-download__feature-card p {
    color: var(--text-secondary);
    font-size: 1em;
}

.page-download__app-showcase-image {
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    max-width: 800px; /* Giới hạn kích thước */
    object-fit: cover;
}

.page-download__security-guarantees {
    background-color: var(--card-bg);
}

.page-download__security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
    margin-bottom: 60px;
}

.page-download__security-item {
    background-color: var(--background);
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--divider);
}

.page-download__security-item-title {
    font-size: 1.5em;
    color: var(--text-main);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-download__security-item p {
    color: var(--text-secondary);
    font-size: 1em;
}

.page-download__security-image {
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    max-width: 600px; /* Giới hạn kích thước */
    object-fit: cover;
}

.page-download__faq-section {
    background-color: var(--background);
}

.page-download__faq-list {
    max-width: 900px;
    margin: 40px auto 0 auto;
    text-align: left;
}

.page-download__faq-item {
    background-color: var(--card-bg);
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--divider);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.page-download__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.15em;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    user-select: none;
}

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

.page-download__faq-question::marker {
    display: none;
}

.page-download__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    color: var(--gold); /* Màu vàng cho dấu cộng/trừ */
    margin-left: 15px;
}

.page-download__faq-answer {
    padding: 0 25px 20px 25px;
    color: var(--text-secondary);
    font-size: 1em;
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-download__faq-item[open] .page-download__faq-answer {
    max-height: 500px; /* Giá trị đủ lớn để chứa nội dung */
    padding-top: 10px;
}

.page-download__final-cta {
    padding: 80px 20px;
    background-color: var(--deep-green); /* Màu xanh đậm cho CTA cuối cùng */
    color: var(--text-main);
    border-radius: 10px;
    margin: 60px auto;
    max-width: 1200px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-download__final-cta .page-download__section-title {
    color: var(--text-main);
}

.page-download__text-block--light {
    color: var(--text-secondary);
}

.page-download__btn-primary--large {
    padding: 18px 40px;
    font-size: 1.2em;
    margin-top: 30px;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .page-download {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-download__hero-section {
        padding: 10px 0 40px 0;
    }

    .page-download__hero-content {
        margin-top: 30px;
        padding: 0 15px;
    }

    .page-download__main-title {
        font-size: 2em;
    }

    .page-download__description {
        font-size: 1em;
    }

    .page-download__cta-buttons {
        flex-direction: column;
        gap: 15px;
        padding: 0 15px;
    }

    .page-download__btn-primary,
    .page-download__btn-secondary {
        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-download__section {
        padding: 40px 15px;
    }

    .page-download__section-title {
        font-size: 1.8em;
    }

    .page-download__text-block {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-download__features-grid,
    .page-download__features-display,
    .page-download__security-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-download__feature-item,
    .page-download__platform-guide,
    .page-download__feature-card,
    .page-download__security-item {
        padding: 25px;
        text-align: center; /* Căn giữa nội dung thẻ trên mobile */
    }
    .page-download__feature-item p,
    .page-download__feature-card p,
    .page-download__security-item p {
        text-align: left; /* Đảm bảo văn bản vẫn căn trái */
    }

    .page-download__platform-guide {
        min-width: unset;
        flex: 1 1 100%;
    }

    .page-download__step-list li {
        padding-left: 0;
        text-align: left;
    }
    .page-download__step-list li::before {
        position: static;
        margin-right: 10px;
        display: inline-flex;
        vertical-align: middle;
    }

    .page-download__qr-code {
        width: 150px;
        height: 150px;
    }

    .page-download__app-showcase-image,
    .page-download__security-image,
    .page-download__hero-image,
    .page-download__qr-code {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-download__container,
    .page-download__hero-image-wrapper,
    .page-download__download-steps,
    .page-download__platform-guide,
    .page-download__qr-code-wrapper,
    .page-download__features-display,
    .page-download__feature-card,
    .page-download__security-grid,
    .page-download__security-item,
    .page-download__faq-list,
    .page-download__faq-item,
    .page-download__final-cta {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important; /* Đảm bảo không tràn */
    }

    .page-download__final-cta {
        margin: 40px auto;
        padding: 50px 15px;
    }

    .page-download__btn-primary--large {
        padding: 15px 30px;
        font-size: 1.1em;
    }

    .page-download__faq-question {
        font-size: 1em;
        padding: 15px 20px;
    }

    .page-download__faq-answer {
        padding: 0 20px 15px 20px;
        font-size: 0.95em;
    }
}