/* style/about.css */
/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại ở đây */

:root {
    --page-about-primary-color: #26A9E0;
    --page-about-secondary-color: #FFFFFF;
    --page-about-text-dark: #333333;
    --page-about-text-light: #ffffff;
    --page-about-button-login-color: #EA7C07;
}

.page-about {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--page-about-text-dark); /* Default text color for light background body */
    background-color: var(--page-about-secondary-color); /* Explicitly set for clarity, though body is white */
}

/* Hero Section */
.page-about__hero-section {
    position: relative;
    display: flex;
    flex-direction: column; /* Image on top, content below */
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10px 20px 60px 20px; /* Small top padding, more bottom padding */
    background-color: var(--page-about-primary-color); /* Hero section background */
    color: var(--page-about-text-light);
    overflow: hidden; /* Ensure no overflow */
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-width: 100%;
    margin-bottom: 30px; /* Space between image and content */
    box-sizing: border-box;
    overflow: hidden;
}

.page-about__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    min-width: 200px; /* Ensure min size */
    min-height: 200px; /* Ensure min size */
    filter: none; /* Ensure no filter */
}

.page-about__hero-content {
    max-width: 900px;
    margin: 0 auto;
    z-index: 1;
}

.page-about__main-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem); /* Responsive font size */
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--page-about-text-light);
}

.page-about__description {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    margin-bottom: 30px;
    opacity: 0.9;
}

.page-about__cta-buttons {
    display: flex;
    flex-wrap: wrap; /* Allow wrapping on small screens */
    justify-content: center;
    gap: 20px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 200px; /* Ensure buttons are not too small */
    text-align: center;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-about__btn-primary {
    background-color: var(--page-about-button-login-color); /* Login color for primary CTA */
    color: var(--page-about-text-light);
    border: 2px solid var(--page-about-button-login-color);
}

.page-about__btn-primary:hover {
    background-color: #d16b06;
    border-color: #d16b06;
    transform: translateY(-2px);
}

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

.page-about__btn-secondary:hover {
    background-color: var(--page-about-text-light);
    color: var(--page-about-primary-color);
    transform: translateY(-2px);
}

/* General Content Sections */
.page-about__introduction-section,
.page-about__mission-vision-section,
.page-about__values-section,
.page-about__why-choose-section,
.page-about__cta-section {
    padding: 60px 20px;
}

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

.page-about__section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.page-about__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--page-about-primary-color);
    border-radius: 2px;
}

.page-about__text-block {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

.page-about__image-content {
    width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    min-width: 200px; /* Ensure min size */
    min-height: 200px; /* Ensure min size */
    filter: none; /* Ensure no filter */
}

/* Section specific styles */
.page-about__light-bg {
    background-color: var(--page-about-secondary-color);
    color: var(--page-about-text-dark);
}

.page-about__light-bg .page-about__section-title::after {
    background-color: var(--page-about-primary-color);
}

.page-about__dark-bg {
    background-color: var(--page-about-primary-color);
    color: var(--page-about-text-light);
}

.page-about__dark-bg .page-about__section-title::after {
    background-color: var(--page-about-secondary-color);
}

.page-about__dark-bg .page-about__text-block {
    color: var(--page-about-text-light);
    opacity: 0.9;
}

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

.page-about__grid-item {
    background-color: rgba(255, 255, 255, 0.1); /* Semi-transparent white for dark background */
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    color: var(--page-about-text-light);
}

.page-about__grid-item .page-about__grid-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--page-about-text-light);
}

.page-about__values-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.page-about__value-item {
    background-color: var(--page-about-secondary-color);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
    color: var(--page-about-text-dark);
    border: 1px solid #e0e0e0; /* Added for contrast */
}

.page-about__value-item:hover {
    transform: translateY(-5px);
}

.page-about__value-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--page-about-primary-color);
}

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

.page-about__feature-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    color: var(--page-about-text-light);
}

.page-about__feature-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--page-about-text-light);
}

.page-about__cta-container {
    text-align: center;
}

.page-about__btn-large {
    font-size: 1.2rem;
    padding: 16px 32px;
}

.page-about__small-text {
    font-size: 0.9rem;
    margin-top: 20px;
    opacity: 0.8;
}

.page-about__contact-link {
    color: var(--page-about-primary-color);
    text-decoration: underline;
    font-weight: 600;
}

.page-about__contact-link:hover {
    color: #1a7bb5;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-about__hero-section {
        padding: 10px 15px 50px 15px;
    }
    .page-about__main-title {
        font-size: clamp(2rem, 6vw, 3rem);
    }
    .page-about__description {
        font-size: clamp(0.9rem, 2.8vw, 1.1rem);
    }
    .page-about__introduction-section,
    .page-about__mission-vision-section,
    .page-about__values-section,
    .page-about__why-choose-section,
    .page-about__cta-section {
        padding: 50px 15px;
    }
}

@media (max-width: 768px) {
    .page-about__hero-section {
        padding-top: 10px !important; /* body đã承担 --header-offset，此处禁止 var(--header-offset) */
        padding-bottom: 40px;
    }
    .page-about__hero-image-wrapper {
        margin-bottom: 20px;
    }
    .page-about__main-title {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
    }
    .page-about__description {
        font-size: clamp(0.85rem, 3.5vw, 1rem);
    }
    .page-about__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .page-about__btn-primary,
    .page-about__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        white-space: normal !important;
        word-wrap: break-word !important;
    }
    .page-about__introduction-section,
    .page-about__mission-vision-section,
    .page-about__values-section,
    .page-about__why-choose-section,
    .page-about__cta-section,
    .page-about__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important; /* Prevent horizontal scroll */
    }
    .page-about__section-title {
        font-size: clamp(1.5rem, 6vw, 2.2rem);
        margin-bottom: 30px;
    }
    .page-about__text-block {
        font-size: 1rem;
        line-height: 1.7;
    }
    .page-about__image-content,
    .page-about__hero-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        min-width: 200px !important;
        min-height: 200px !important;
    }
    .page-about__mission-vision-grid,
    .page-about__values-list,
    .page-about__features-grid {
        grid-template-columns: 1fr; /* Single column layout for mobile */
        gap: 20px;
    }
    .page-about__grid-item,
    .page-about__value-item,
    .page-about__feature-item {
        padding: 20px;
    }
    .page-about__value-title,
    .page-about__grid-title,
    .page-about__feature-title {
        font-size: 1.3rem;
    }
}

/* Ensure no filter on images */
.page-about img {
    filter: none !important;
}