/* style/about.css */

/* Biến CSS */
:root {
    --page-about-primary-color: #0A192F;
    --page-about-accent-color: #FFD700;
    --page-about-text-light: #F0F0F0;
    --page-about-text-dark: #1A1A1A;
    --page-about-background-dark: #0A192F;
    --page-about-background-light: #FFFFFF;
    --page-about-card-bg: #1A2B42;
    --page-about-border-color: #334760;
}

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

.page-about-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--page-about-primary-color) 0%, #1A2B42 100%);
    position: relative;
    overflow: hidden;
    color: var(--page-about-text-light);
}

.page-about-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.2;
    z-index: 0;
}

.page-about-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-about-hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.page-about-hero-title {
    font-size: 3.2em;
    margin-bottom: 20px;
    color: var(--page-about-accent-color);
    line-height: 1.2;
}

.page-about-hero-description {
    font-size: 1.3em;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

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

.page-about-btn-primary:hover {
    background-color: #e6c200;
    transform: translateY(-2px);
}

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

.page-about-btn-secondary:hover {
    background-color: var(--page-about-accent-color);
    color: var(--page-about-background-dark);
    transform: translateY(-2px);
}

.page-about-btn-lg {
    padding: 18px 35px;
    font-size: 1.2em;
}

.page-about-section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.page-about-section:nth-of-type(even) {
    background-color: #1a2b42;
}

.page-about-section-title {
    font-size: 2.5em;
    color: var(--page-about-accent-color);
    margin-bottom: 40px;
}

.page-about-content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.page-about-content-wrapper p {
    font-size: 1.1em;
    margin-bottom: 15px;
    color: var(--page-about-text-light);
}

.page-about-flex-row {
    display: flex;
    gap: 40px;
    align-items: center;
    text-align: left;
}

.page-about-flex-row .page-about-text-content {
    flex: 1;
}

.page-about-flex-row .page-about-image-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-about-img-fluid {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

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

.page-about-advantage-card {
    background-color: var(--page-about-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    border: 1px solid var(--page-about-border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--page-about-text-light);
}

.page-about-card-icon {
    width: 120px; /* Min 200x200px images, so icon image needs to be larger than 100px here */
    height: 120px;
    object-fit: contain;
    margin-bottom: 20px;
}

.page-about-card-title {
    font-size: 1.8em;
    color: var(--page-about-accent-color);
    margin-bottom: 15px;
}

.page-about-advantage-card p {
    font-size: 1em;
    margin-bottom: 15px;
}

.page-about-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 0;
    text-align: left;
}

.page-about-list li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
}

.page-about-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    color: var(--page-about-accent-color);
    font-size: 1.2em;
    top: 0;
}

.page-about-list-title {
    font-size: 1.2em;
    color: var(--page-about-accent-color);
    margin-bottom: 5px;
}

.page-about-commitment-subtitle {
    font-size: 1.8em;
    color: var(--page-about-accent-color);
    margin-top: 30px;
    margin-bottom: 15px;
    text-align: left;
}

.page-about-join-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about-step-card {
    background-color: var(--page-about-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    border: 1px solid var(--page-about-border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--page-about-text-light);
}

.page-about-step-icon {
    width: 120px;
    height: 120px;
    object-fit: contain;
    margin-bottom: 20px;
}

.page-about-step-title {
    font-size: 1.6em;
    color: var(--page-about-accent-color);
    margin-bottom: 15px;
}

.page-about-contact-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    text-align: left;
}

.page-about-contact-list li {
    margin-bottom: 10px;
    font-size: 1.1em;
    color: var(--page-about-text-light);
}

.page-about-contact-list a {
    color: var(--page-about-accent-color);
    text-decoration: none;
}

.page-about-contact-list a:hover {
    text-decoration: underline;
}

.page-about-contact-label {
    min-width: 120px;
    display: inline-block;
}

.page-about-footer-cta {
    background-color: var(--page-about-accent-color);
    color: var(--page-about-background-dark);
    padding: 50px 20px;
    text-align: center;
}

.page-about-footer-cta-text {
    font-size: 1.8em;
    margin-bottom: 30px;
    font-weight: bold;
}

.page-about-copyright {
    background-color: #000;
    color: var(--page-about-text-light);
    padding: 20px;
    text-align: center;
    font-size: 0.9em;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-about-hero-title {
        font-size: 2.5em;
    }

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

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

    .page-about-flex-row {
        flex-direction: column;
    }

    .page-about-flex-row .page-about-text-content,
    .page-about-flex-row .page-about-image-content {
        flex: none;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .page-about-hero {
        padding: 60px 15px;
    }

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

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

    .page-about-btn-primary,
    .page-about-btn-secondary {
        padding: 12px 25px;
        font-size: 1em;
    }

    .page-about-btn-lg {
        padding: 15px 30px;
        font-size: 1.1em;
    }

    .page-about-section {
        padding: 40px 15px;
    }

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

    .page-about-content-wrapper p,
    .page-about-advantage-card p,
    .page-about-list li p,
    .page-about-contact-list li {
        font-size: 0.95em;
    }

    .page-about-card-title,
    .page-about-commitment-subtitle,
    .page-about-step-title {
        font-size: 1.5em;
    }

    .page-about-footer-cta-text {
        font-size: 1.5em;
    }
}

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

    .page-about-hero-description {
        font-size: 0.9em;
    }

    .page-about-btn-primary,
    .page-about-btn-secondary {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    .page-about-btn-lg {
        padding: 12px 25px;
        font-size: 1em;
    }

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

    .page-about-card-title,
    .page-about-commitment-subtitle,
    .page-about-step-title {
        font-size: 1.3em;
    }

    .page-about-footer-cta-text {
        font-size: 1.3em;
    }

    .page-about-advantages-grid,
    .page-about-join-steps {
        grid-template-columns: 1fr;
    }
}