/* style/about.css */

/* Biến CSS cho màu sắc */
:root {
    --primary-color: #0A2E50; /* Xanh đậm */
    --secondary-color: #FFD700; /* Vàng kim */
    --text-light: #ffffff;
    --text-dark: #333333;
    --bg-dark-body: #121212;
    --bg-light-section: #f0f2f5; /* Nền sáng cho các phần cụ thể */
    --card-bg-dark: rgba(255, 255, 255, 0.1);
    --card-bg-light: #ffffff;
    --border-color: #e0e0e0;
}

/* Đảm bảo nội dung không bị header cố định che khuất */
.page-about {
    padding-top: 120px; /* Điều chỉnh dựa trên chiều cao header cố định */
    background-color: var(--bg-dark-body); /* Body background is dark */
    color: var(--text-light); /* Default text color for dark background */
}

/* Các phần có nền tối */
.page-about__dark-section {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 60px 20px;
}

/* Các phần có nền sáng */
.page-about__light-section {
    background-color: var(--bg-light-section);
    color: var(--text-dark);
    padding: 60px 20px;
}

.page-about__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.page-about__main-title {
    font-size: 48px;
    font-weight: bold;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 25px;
    line-height: 1.2;
}

.page-about__description {
    font-size: 18px;
    line-height: 1.8;
    text-align: center;
    margin-bottom: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__cta-button {
    display: block;
    width: fit-content;
    margin: 0 auto 20px auto;
    padding: 15px 40px;
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    border: none;
    cursor: pointer;
}

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

.page-about__btn-primary:hover {
    background: darken(var(--secondary-color), 10%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.page-about__section-title {
    font-size: 38px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.3;
}

.page-about__dark-section .page-about__section-title {
    color: var(--secondary-color);
}

.page-about__light-section .page-about__section-title {
    color: var(--primary-color);
}

.page-about__content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.page-about__content-block {
    text-align: left;
}

.page-about__content-subtitle {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
}

.page-about__dark-text {
    color: var(--text-dark);
}

.page-about__text-block {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 20px;
}

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

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

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

.page-about__value-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.page-about__value-description {
    font-size: 15px;
    line-height: 1.6;
}

.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: var(--card-bg-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

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

.page-about__feature-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 20px;
    filter: none; /* Ensure no color filters */
}

.page-about__feature-title {
    font-size: 22px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.page-about__feature-text {
    font-size: 15px;
    line-height: 1.6;
}

.page-about__commitment-list {
    list-style: none;
    padding: 0;
    margin: 0 auto 40px auto;
    max-width: 800px;
}

.page-about__commitment-item {
    background: var(--card-bg-light);
    padding: 20px 25px;
    margin-bottom: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-dark);
    border-left: 5px solid var(--secondary-color);
}

.page-about__commitment-item strong {
    color: var(--primary-color);
}

/* FAQ styles */
.page-about__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.page-about__faq-item {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--card-bg-dark);
    color: var(--text-light);
}

.page-about__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    background: var(--primary-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.page-about__faq-question:hover {
    background: darken(var(--primary-color), 5%);
    border-color: rgba(255, 255, 255, 0.3);
}

.page-about__faq-question h3 {
    margin: 0;
    padding: 0;
    flex: 1;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-light);
    pointer-events: none; /* Prevent h3 from blocking click event */
}

.page-about__faq-toggle {
    font-size: 28px;
    font-weight: bold;
    line-height: 1;
    color: var(--secondary-color);
    transition: transform 0.3s ease, color 0.3s ease;
    flex-shrink: 0;
    margin-left: 15px;
    pointer-events: none; /* Prevent icon from blocking click event */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.page-about__faq-item.active .page-about__faq-toggle {
    color: var(--text-light);
    transform: rotate(45deg); /* Change to minus sign visually */
}

.page-about__faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
    padding: 0 25px;
    opacity: 0;
    background: var(--card-bg-dark);
    color: var(--text-light);
}

.page-about__faq-item.active .page-about__faq-answer {
    max-height: 2000px !important; /* Sufficiently large to contain any content */
    padding: 20px 25px !important;
    opacity: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about__faq-answer p {
    font-size: 16px;
    line-height: 1.7;
    margin: 0;
    color: var(--text-light);
}

.page-about__text-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.page-about__text-link:hover {
    color: darken(var(--secondary-color), 10%);
    text-decoration: underline;
}

/* Blog section styles */
.page-about__blog-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about__blog-item {
    background: var(--card-bg-light);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

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

.page-about__blog-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.page-about__blog-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: none; /* Ensure no color filters */
}

.page-about__blog-item-title {
    font-size: 22px;
    font-weight: bold;
    margin: 20px 20px 10px 20px;
    color: var(--primary-color);
    line-height: 1.4;
}

.page-about__blog-item-excerpt {
    font-size: 15px;
    line-height: 1.6;
    margin: 0 20px 15px 20px;
    color: var(--text-dark);
}

.page-about__blog-item-date {
    display: block;
    font-size: 14px;
    color: #888;
    margin: 0 20px 20px 20px;
}

.page-about__image-full {
    width: 100%;
    height: auto;
    display: block;
    margin-top: 30px;
    filter: none; /* Ensure no color filters */
}

.page-about__img-rounded {
    border-radius: 10px;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .page-about__main-title {
        font-size: 42px;
    }
    .page-about__section-title {
        font-size: 32px;
    }
    .page-about__content-grid {
        grid-template-columns: 1fr;
    }
    .page-about__content-block:first-child {
        margin-bottom: 30px;
    }
    .page-about__content-block img {
        margin-top: 0;
    }
}

@media (max-width: 768px) {
    .page-about {
        padding-top: 100px !important; /* Adjust for mobile header height */
        font-size: 16px;
        line-height: 1.6;
    }
    .page-about__hero-section, 
    .page-about__mission-vision-section,
    .page-about__values-section,
    .page-about__why-choose-section,
    .page-about__team-section,
    .page-about__commitment-section,
    .page-about__faq-section,
    .page-about__blog-section {
        padding: 40px 15px !important;
    }
    .page-about__container {
        padding: 0;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
    }
    .page-about__main-title {
        font-size: 32px;
        margin-bottom: 15px;
    }
    .page-about__description {
        font-size: 16px;
        margin-bottom: 30px;
    }
    .page-about__cta-button {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 12px 25px !important;
        font-size: 18px !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }
    .page-about__section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    .page-about__content-subtitle {
        font-size: 24px;
    }
    .page-about__values-grid, .page-about__features-grid, .page-about__blog-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-about__value-card, .page-about__feature-card, .page-about__blog-item {
        padding: 25px;
    }
    .page-about__feature-icon {
        width: 60px;
        height: 60px;
    }
    .page-about__feature-title, .page-about__blog-item-title {
        font-size: 20px;
    }
    .page-about__commitment-item {
        font-size: 15px;
        padding: 15px 20px;
    }
    .page-about__faq-question {
        padding: 15px 20px;
    }
    .page-about__faq-question h3 {
        font-size: 16px;
    }
    .page-about__faq-toggle {
        font-size: 24px;
        width: 28px;
        height: 28px;
    }
    .page-about__faq-answer {
        padding: 0 20px;
    }
    .page-about__faq-item.active .page-about__faq-answer {
        padding: 15px 20px !important;
    }
    .page-about__faq-answer p {
        font-size: 15px;
    }
    /* Mobile image responsiveness */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        box-sizing: border-box !important;
        filter: none !important; /* Ensure no color filters */
    }
    .page-about__blog-thumbnail {
        height: 180px;
    }
    .page-about__blog-item-title, .page-about__blog-item-excerpt, .page-about__blog-item-date {
        margin-left: 15px;
        margin-right: 15px;
    }
}

@media (max-width: 480px) {
    .page-about__main-title {
        font-size: 28px;
    }
    .page-about__section-title {
        font-size: 24px;
    }
    .page-about__cta-button {
        font-size: 16px !important;
        padding: 10px 20px !important;
    }
    .page-about__content-subtitle {
        font-size: 22px;
    }
    .page-about__value-title {
        font-size: 20px;
    }
    .page-about__feature-title, .page-about__blog-item-title {
        font-size: 18px;
    }
}