/* style/about.css */
:root {
    --primary-color: #FF8C1A;
    --secondary-color: #FFA53A;
    --card-bg: #17191F;
    --site-bg: #0D0E12;
    --text-main: #FFF3E6;
    --border-color: #A84F0C;
    --glow-color: #FFB04D;
    --deep-orange: #D96800;
}

/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại ở đây */
.page-about {
    color: var(--text-main); /* Áp dụng màu chữ chính cho toàn bộ trang */
    background-color: var(--site-bg);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.page-about__section {
    padding: 60px 0;
    text-align: center;
}

.page-about__section-title {
    font-size: clamp(1.8em, 2.5vw, 2.5em); /* Sử dụng clamp cho h2 */
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 40px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.page-about h2 {
    font-size: clamp(1.8em, 2.5vw, 2.5em); /* Sử dụng clamp cho h2 */
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.page-about h3 {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 15px;
}

.page-about p {
    font-size: 1.1em;
    margin-bottom: 20px;
    color: var(--text-main);
}

/* Hero Section */
.page-about__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 10px; /* Chỉ một khoảng nhỏ, body đã xử lý header offset */
    overflow: hidden;
    background-color: var(--site-bg);
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-height: 675px; /* Giới hạn chiều cao cho hero image */
    overflow: hidden;
}

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

.page-about__hero-content-wrapper {
    padding: 40px 0 60px;
    text-align: center;
    width: 100%;
    background: linear-gradient(180deg, rgba(13, 14, 18, 0.8) 0%, var(--site-bg) 100%);
    margin-top: -100px; /* Kéo lên một chút để tạo hiệu ứng */
    position: relative;
    z-index: 1;
}

.page-about__main-title {
    font-size: clamp(2.5em, 5vw, 3.5em); /* H1 sử dụng clamp */
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.03em;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__description {
    font-size: 1.2em;
    color: var(--text-main);
    max-width: 900px;
    margin: 0 auto 30px;
}

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

.page-about__btn-primary,
.page-about__btn-secondary,
.page-about__btn-tertiary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal; /* Cho phép xuống dòng */
    word-wrap: break-word; /* Ngắt từ khi quá dài */
}

.page-about__btn-primary {
    background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange) 100%);
    color: var(--text-main);
    border: none;
    box-shadow: 0 4px 15px rgba(var(--primary-color), 0.4);
}

.page-about__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(var(--primary-color), 0.6);
}

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

.page-about__btn-secondary:hover {
    background: var(--primary-color);
    color: var(--site-bg);
}

.page-about__btn-tertiary {
    background: var(--card-bg);
    color: var(--primary-color);
    border: 2px solid var(--border-color);
}

.page-about__btn-tertiary:hover {
    background: var(--border-color);
    color: var(--text-main);
}

/* Content Grid */
.page-about__content-grid {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-top: 40px;
    text-align: left;
}

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

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

.page-about__image-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-about__image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    display: block; /* Đảm bảo hình ảnh không có khoảng trắng dưới cùng */
}

/* Dark Background Sections */
.page-about__dark-bg {
    background-color: var(--card-bg);
    color: var(--text-main);
}

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

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

.page-about__feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(var(--primary-color), 0.3);
}

.page-about__feature-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
    object-fit: contain;
    max-width: 100%;
}

.page-about__feature-title {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* CTA Section */
.page-about__cta-content {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    padding: 60px 40px;
    border-radius: 15px;
    margin-top: 60px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    color: #000000; /* Đảm bảo chữ đen trên nền cam để có độ tương phản tốt */
}

.page-about__cta-content .page-about__section-title {
    color: #000000;
    margin-bottom: 20px;
}

.page-about__cta-content p {
    color: #333333;
    font-size: 1.15em;
    margin-bottom: 40px;
}

.page-about__cta-content .page-about__btn-primary {
    background: var(--site-bg);
    color: var(--primary-color);
    border: 2px solid var(--site-bg);
    box-shadow: none;
}

.page-about__cta-content .page-about__btn-primary:hover {
    background: var(--card-bg);
    color: var(--secondary-color);
    transform: translateY(-3px);
}

.page-about__cta-content .page-about__btn-secondary {
    background: var(--site-bg);
    color: var(--primary-color);
    border: 2px solid var(--site-bg);
}

.page-about__cta-content .page-about__btn-secondary:hover {
    background: var(--card-bg);
    color: var(--secondary-color);
}

.page-about__cta-content .page-about__btn-tertiary {
    background: var(--site-bg);
    color: var(--primary-color);
    border: 2px solid var(--site-bg);
}

.page-about__cta-content .page-about__btn-tertiary:hover {
    background: var(--card-bg);
    color: var(--secondary-color);
}


/* Responsive Styles */
@media (max-width: 992px) {
    .page-about__content-grid {
        flex-direction: column;
        text-align: center;
    }

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

    .page-about__text-block, .page-about__image-wrapper {
        width: 100%;
    }

    .page-about__hero-content-wrapper {
        margin-top: -50px;
        padding: 30px 0 40px;
    }

    .page-about__main-title {
        font-size: 2.2em;
    }

    .page-about__description {
        font-size: 1.1em;
    }

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

    .page-about__features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

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

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

    .page-about__container {
        padding: 0 15px;
    }

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

    /* Mobile image responsiveness */
    .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__feature-icon {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
    }
    .page-about__feature-icon { /* Ensure small icons are not used, but if they were, constrain them */
        width: 80px !important; /* Example for smaller icons if they were allowed */
        height: auto !important;
        margin-left: auto !important;
        margin-right: auto !important;
    }

    /* Mobile button responsiveness */
    .page-about__btn-primary,
    .page-about__btn-secondary,
    .page-about__btn-tertiary,
    .page-about a[class*="button"],
    .page-about 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-about__cta-buttons,
    .page-about__button-group,
    .page-about__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important; /* Đảm bảo các nút xuống dòng */
        gap: 10px;
        flex-direction: column; /* Các nút xếp dọc trên mobile */
    }

    .page-about__section {
        padding: 40px 0;
    }

    .page-about__section-title {
        font-size: 1.8em;
        margin-bottom: 25px;
    }

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

    .page-about__cta-content {
        padding: 40px 20px;
    }
}