/* style/about.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không lặp lại */

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

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

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

/* --- Hero Section --- */
.page-about__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    padding-top: 10px; /* Nhỏ hơn so với --header-offset để tránh trùng lặp */
    overflow: hidden;
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-height: 600px; /* Giới hạn chiều cao cho hero image */
    overflow: hidden;
    margin-bottom: 20px;
}

.page-about__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    border-radius: 10px;
}

.page-about__hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.5); /* Nền bán trong suốt để chữ nổi bật */
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-about__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem); /* Sử dụng clamp cho font-size */
    color: var(--page-about-gold);
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.2;
}

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

.page-about__cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap; /* Cho phép các nút xuống dòng trên di động */
    width: 100%; /* Đảm bảo container nút chiếm đủ chiều rộng */
    box-sizing: border-box;
    overflow: hidden;
}

.page-about__btn-primary,
.page-about__btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%; /* Quan trọng cho responsive */
    white-space: normal; /* Cho phép chữ xuống dòng */
    word-wrap: break-word; /* Đảm bảo từ dài không tràn */
    text-align: center;
}

.page-about__btn-primary {
    background: var(--page-about-button-gradient);
    color: var(--page-about-text-main);
    border: 2px solid transparent;
}

.page-about__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(var(--page-about-glow), 0.4);
}

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

.page-about__btn-secondary:hover {
    background-color: var(--page-about-primary-color);
    color: var(--page-about-text-main);
    transform: translateY(-3px);
}

/* --- General Section Styles --- */
.page-about__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--page-about-gold);
    text-align: center;
    margin-bottom: 25px;
    font-weight: 700;
}

.page-about__section-description {
    font-size: 1.1rem;
    color: var(--page-about-text-secondary);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px auto;
}

.page-about__text-block {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--page-about-text-secondary);
}

.page-about__text-block p {
    margin-bottom: 15px;
}

/* --- Dark/Light Background Sections --- */
.page-about__dark-section {
    background-color: var(--page-about-background);
    color: var(--page-about-text-main);
    padding: 80px 0;
}

.page-about__light-bg {
    background-color: #0d1e15; /* Một sắc thái xanh lá đậm hơn một chút cho phần sáng */
    color: var(--page-about-text-main);
    padding: 80px 0;
}

/* --- Content Grid Layout (Vision/Mission, Responsible Gaming, Future) --- */
.page-about__content-grid {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-top: 40px;
}

.page-about__content-grid--reverse {
    flex-direction: row-reverse;
}

.page-about__content-grid .page-about__text-block,
.page-about__content-grid .page-about__image-wrapper {
    flex: 1;
    min-width: 300px; /* Đảm bảo không quá nhỏ trên tablet */
}

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

.page-about__image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    object-fit: cover;
}

/* --- Why Choose Section --- */
.page-about__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about__feature-card {
    background-color: var(--page-about-card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--page-about-border);
}

.page-about__feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(var(--page-about-glow), 0.2);
}

.page-about__feature-image {
    width: 100%;
    height: 200px; /* Chiều cao cố định cho ảnh tính năng */
    object-fit: cover;
    border-radius: 8gpx;
    margin-bottom: 20px;
}

.page-about__feature-title {
    font-size: 1.5rem;
    color: var(--page-about-gold);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-about__feature-text {
    font-size: 1rem;
    color: var(--page-about-text-secondary);
    flex-grow: 1; /* Đảm bảo các thẻ có chiều cao tương đồng */
}

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

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

.page-about__faq-item[open] {
    box-shadow: 0 4px 20px rgba(var(--page-about-glow), 0.1);
}

.page-about__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--page-about-text-main);
    cursor: pointer;
    background-color: var(--page-about-deep-green);
    border-bottom: 1px solid transparent;
    transition: background-color 0.3s ease;
    list-style: none; /* Dành cho <summary> */
}

.page-about__faq-item[open] .page-about__faq-question {
    border-bottom: 1px solid var(--page-about-border);
    background-color: var(--page-about-deep-green);
}

.page-about__faq-question::-webkit-details-marker {
    display: none; /* Ẩn marker mặc định của Chrome */
}

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

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

.page-about__faq-answer {
    padding: 20px 25px;
    font-size: 1rem;
    color: var(--page-about-text-secondary);
    background-color: var(--page-about-card-bg);
}

/* --- Centered CTA Buttons --- */
.page-about__cta-buttons--center {
    justify-content: center;
    margin-top: 40px;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .page-about__content-grid {
        flex-direction: column;
    }
    .page-about__content-grid--reverse {
        flex-direction: column; /* Đảo ngược lại trên di động */
    }
    .page-about__hero-section {
        padding: 40px 15px;
    }
    .page-about__hero-content {
        padding: 15px;
    }
    .page-about__main-title {
        font-size: clamp(2rem, 6vw, 3rem);
    }
    .page-about__section-title {
        font-size: clamp(1.6rem, 5vw, 2.5rem);
    }
    .page-about__features-grid {
        grid-template-columns: 1fr;
    }
}

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

    /* Hình ảnh và video responsive */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-about__image-wrapper,
    .page-about__hero-image-wrapper,
    .page-about__video-container,
    .page-about__video-wrapper,
    .page-about__section,
    .page-about__card,
    .page-about__container {
        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 nội dung */
    }

    /* Nút responsive */
    .page-about__cta-buttons {
        flex-direction: column !important; /* Xếp chồng nút trên di động */
        gap: 10px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-about__btn-primary,
    .page-about__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-about__hero-section,
    .page-about__dark-section,
    .page-about__light-bg {
        padding: 40px 0;
    }

    .page-about__hero-content {
        margin-top: 20px;
    }

    .page-about__faq-question {
        font-size: 1rem;
        padding: 15px 20px;
    }
    .page-about__faq-answer {
        padding: 15px 20px;
    }
    /* Đảm bảo không có padding-top: var(--header-offset) lặp lại */
    .page-about__hero-section {
        padding-top: 10px !important;
    }
}

@media (max-width: 480px) {
    .page-about__main-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
    }
    .page-about__section-title {
        font-size: clamp(1.5rem, 7vw, 2.2rem);
    }
    .page-about__intro-text,
    .page-about__section-description,
    .page-about__text-block p,
    .page-about__feature-text,
    .page-about__faq-answer {
        font-size: 0.95rem;
    }
}