/* style/about.css */

/* Biến CSS */
:root {
    --page-about-primary-color: #0056B3; /* Deep Blue */
    --page-about-secondary-color: #FFD700; /* Gold */
    --page-about-text-dark: #333333;
    --page-about-text-light: #ffffff;
    --page-about-bg-light: #f8f9fa;
    --page-about-bg-dark: #004085;
    --page-about-border-color: #e0e0e0;
}

.page-about {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-about-text-dark);
    background-color: var(--page-about-bg-light);
}

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

/* Hero Section */
.page-about__hero {
    background: linear-gradient(135deg, var(--page-about-primary-color) 0%, #004085 100%);
    color: var(--page-about-text-light);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-about__hero::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background-color: rgba(255, 215, 0, 0.1);
    border-radius: 50%;
    filter: blur(50px);
    z-index: 0;
}

.page-about__hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background-color: rgba(255, 215, 0, 0.15);
    border-radius: 50%;
    filter: blur(40px);
    z-index: 0;
}

.page-about__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: var(--page-about-secondary-color);
    position: relative;
    z-index: 1;
    font-weight: bold;
}

.page-about__hero-description {
    font-size: 1.2em;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.page-about__btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    font-size: 1.1em;
    position: relative;
    z-index: 1;
    border: none;
    cursor: pointer;
}

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

.page-about__btn--primary:hover {
    background-color: #e6c200;
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

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

.page-about__btn--secondary:hover {
    background-color: var(--page-about-secondary-color);
    color: var(--page-about-primary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

/* General Section Styling */
.page-about__section {
    padding: 80px 0;
    background-color: var(--page-about-bg-light);
}

.page-about__section:nth-of-type(even) {
    background-color: #f0f2f5;
}

.page-about__section-title {
    font-size: 2.8em;
    color: var(--page-about-primary-color);
    text-align: center;
    margin-bottom: 60px;
    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-secondary-color);
    border-radius: 2px;
}

/* Grid Layouts */
.page-about__grid {
    display: grid;
    gap: 40px;
    align-items: center;
}

.page-about__grid--2-col {
    grid-template-columns: 1fr 1fr;
}

.page-about__grid--3-col {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Image & Content Blocks */
.page-about__image-block {
    text-align: center;
}

.page-about__image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.page-about__content-block p {
    font-size: 1.1em;
    margin-bottom: 20px;
    color: #555;
}

/* Cards */
.page-about__card {
    background-color: var(--page-about-text-light);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.page-about__card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.page-about__card-title {
    font-size: 1.8em;
    color: var(--page-about-primary-color);
    margin-bottom: 15px;
    font-weight: bold;
}

/* Values Section */
.page-about__value-item {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--page-about-text-light);
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
    height: 100%;
}

.page-about__value-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.page-about__icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    display: inline-block;
    /* Đảm bảo không sử dụng filter để thay đổi màu ảnh */
}

.page-about__value-title {
    font-size: 1.6em;
    color: var(--page-about-primary-color);
    margin-bottom: 15px;
    font-weight: bold;
}

/* Why Choose Us Section */
.page-about__why-choose-us .page-about__grid {
    grid-template-columns: 1fr 1.2fr;
}

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

.page-about__list li {
    font-size: 1.1em;
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    color: #555;
}

.page-about__list li::before {
    content: '✔';
    color: var(--page-about-secondary-color);
    font-size: 1.2em;
    position: absolute;
    left: 0;
    top: 0;
    font-weight: bold;
}

.page-about__list-strong {
    color: var(--page-about-primary-color);
}

/* Call to Action Section */
.page-about__cta {
    background: linear-gradient(45deg, var(--page-about-primary-color), #004085);
    color: var(--page-about-text-light);
    text-align: center;
    padding: 80px 0;
}

.page-about__cta-content {
    max-width: 900px;
}

.page-about__cta-title {
    font-size: 3em;
    color: var(--page-about-secondary-color);
    margin-bottom: 25px;
    font-weight: bold;
}

.page-about__cta-description {
    font-size: 1.3em;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-about__hero-title {
        font-size: 2.8em;
    }

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

    .page-about__grid--2-col,
    .page-about__why-choose-us .page-about__grid {
        grid-template-columns: 1fr;
    }

    .page-about__image-block {
        order: -1; /* Image appears above text on smaller screens */
        margin-bottom: 30px;
    }

    .page-about__why-choose-us .page-about__image-block {
        order: 0;
    }
}

@media (max-width: 768px) {
    .page-about__hero {
        padding: 80px 0;
    }

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

    .page-about__hero-description {
        font-size: 1em;
    }

    .page-about__btn {
        padding: 12px 25px;
        font-size: 1em;
    }

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

    .page-about__section-title {
        font-size: 1.8em;
        margin-bottom: 40px;
    }

    .page-about__grid--3-col {
        grid-template-columns: 1fr;
    }

    .page-about__card,
    .page-about__value-item {
        padding: 25px;
    }

    .page-about__card-title,
    .page-about__value-title {
        font-size: 1.5em;
    }

    .page-about__list li {
        font-size: 1em;
    }

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

    .page-about__cta-description {
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    .page-about__container {
        padding: 0 15px;
    }

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

    .page-about__section-title {
        font-size: 1.5em;
    }

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