/* style/about.css */

/* Biến CSS */
:root {
    --page-about-primary-color: #1A2E4E; /* Màu chủ đạo */
    --page-about-accent-color: #FFD700;  /* Màu phụ trợ */
    --page-about-text-light: #FFFFFF;    /* Màu chữ sáng */
    --page-about-text-dark: #333333;     /* Màu chữ tối */
    --page-about-bg-light: #F8F8F8;     /* Nền sáng */
    --page-about-bg-dark: #122138;      /* Nền tối, biến thể của primary */
}

.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;
}

.page-about__hero {
    background: linear-gradient(135deg, var(--page-about-primary-color) 0%, #2A476E 100%); /* Biến thể đậm hơn */
    color: var(--page-about-text-light);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-about__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15; /* Ảnh nền mờ */
    z-index: 0;
}

.page-about__hero .page-about__container {
    position: relative;
    z-index: 1;
}

.page-about__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: var(--page-about-accent-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: bold;
}

.page-about__hero-description {
    font-size: 1.3em;
    max-width: 800px;
    margin: 0 auto 30px auto;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

.page-about__button {
    display: inline-block;
    padding: 15px 30px;
    font-size: 1.1em;
    font-weight: bold;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.3s ease;
    border: none;
    cursor: pointer;
}

.page-about__button--primary {
    background-color: var(--page-about-accent-color);
    color: var(--page-about-primary-color);
}

.page-about__button--primary:hover {
    background-color: #e6c200;
    transform: translateY(-3px);
}

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

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

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

.page-about__section--alt {
    background-color: var(--page-about-bg-dark);
    color: var(--page-about-text-light);
}

.page-about__section-title {
    font-size: 2.5em;
    margin-bottom: 30px;
    color: var(--page-about-primary-color);
    font-weight: bold;
}

.page-about__section--alt .page-about__section-title {
    color: var(--page-about-accent-color);
}

.page-about__section-text {
    font-size: 1.1em;
    max-width: 900px;
    margin: 0 auto 40px auto;
    line-height: 1.7;
}

.page-about__image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin-top: 30px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.page-about__values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
    text-align: left;
}

.page-about__value-item {
    background-color: var(--page-about-text-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 5px solid var(--page-about-accent-color);
}

.page-about__section--alt .page-about__value-item {
    background-color: #2A476E; /* Biến thể của primary-color */
    color: var(--page-about-text-light);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.page-about__value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.2);
}

.page-about__value-title {
    font-size: 1.5em;
    color: var(--page-about-primary-color);
    margin-bottom: 15px;
}

.page-about__section--alt .page-about__value-title {
    color: var(--page-about-accent-color);
}

.page-about__value-item p {
    font-size: 1em;
    line-height: 1.6;
}

.page-about__list {
    list-style: none;
    padding: 0;
    max-width: 900px;
    margin: 40px auto;
    text-align: left;
}

.page-about__list li {
    background-color: var(--page-about-text-light);
    margin-bottom: 15px;
    padding: 20px 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    font-size: 1.1em;
    line-height: 1.6;
    border-left: 5px solid var(--page-about-accent-color);
}

.page-about__section--alt .page-about__list li {
    background-color: #2A476E;
    color: var(--page-about-text-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.page-about__cta-section {
    background: linear-gradient(45deg, var(--page-about-accent-color) 0%, #FFC700 100%);
    padding: 80px 0;
    text-align: center;
    color: var(--page-about-primary-color);
}

.page-about__cta-title {
    font-size: 3em;
    margin-bottom: 20px;
    color: var(--page-about-primary-color);
    font-weight: bold;
}

.page-about__cta-description {
    font-size: 1.2em;
    max-width: 800px;
    margin: 0 auto 40px auto;
    line-height: 1.7;
    color: #4A4A4A;
}

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

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

    .page-about__cta-title {
        font-size: 2.5em;
    }
}

@media (max-width: 768px) {
    .page-about__hero {
        padding: 60px 0;
    }

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

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

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

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

    .page-about__section-text,
    .page-about__list li,
    .page-about__value-item p {
        font-size: 1em;
    }

    .page-about__values-grid {
        grid-template-columns: 1fr;
    }

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

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

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

@media (max-width: 480px) {
    .page-about__hero-title {
        font-size: 1.8em;
    }

    .page-about__hero-description {
        font-size: 0.95em;
    }

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

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