/* style/index-about-bl555.css */

/* Biến CSS cho màu sắc */
:root {
    --page-index-about-bl555-primary-color: #003366;
    --page-index-about-bl555-accent-color: #FFCC00;
    --page-index-about-bl555-text-light: #f0f0f0;
    --page-index-about-bl555-text-dark: #333;
    --page-index-about-bl555-background-light: #ffffff;
    --page-index-about-bl555-background-dark: #002244;
    --page-index-about-bl555-button-hover-dark: #b38f00;
    --page-index-about-bl555-button-hover-light: #4d7094;
}

.page-index-about-bl555 {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--page-index-about-bl555-text-dark);
    background-color: var(--page-index-about-bl555-background-light);
}

.page-index-about-bl555__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-index-about-bl555__section-padding {
    padding: 60px 0;
}

.page-index-about-bl555__hero-section {
    background: linear-gradient(135deg, var(--page-index-about-bl555-primary-color) 0%, var(--page-index-about-bl555-background-dark) 100%);
    color: var(--page-index-about-bl555-text-light);
    padding: 100px 0;
    text-align: center;
}

.page-index-about-bl555__hero-title {
    font-size: 3.2em;
    margin-bottom: 20px;
    color: var(--page-index-about-bl555-text-light);
    font-weight: 700;
    line-height: 1.2;
}

.page-index-about-bl555__hero-subtitle {
    font-size: 1.4em;
    margin-bottom: 40px;
    opacity: 0.9;
}

.page-index-about-bl555__cta-button {
    display: inline-block;
    background-color: var(--page-index-about-bl555-accent-color);
    color: var(--page-index-about-bl555-primary-color);
    padding: 15px 35px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
}

.page-index-about-bl555__cta-button:hover {
    background-color: var(--page-index-about-bl555-button-hover-dark);
    transform: translateY(-3px);
}

.page-index-about-bl555__section-title {
    font-size: 2.5em;
    color: var(--page-index-about-bl555-primary-color);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

.page-index-about-bl555__section-title--light {
    color: var(--page-index-about-bl555-text-light);
}

.page-index-about-bl555__image-text-layout {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
}

.page-index-about-bl555__text-content {
    flex: 2;
    min-width: 300px;
}

.page-index-about-bl555__image-wrapper {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.page-index-about-bl555__image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.page-index-about-bl555__section-gradient {
    background: linear-gradient(135deg, var(--page-index-about-bl555-primary-color) 0%, var(--page-index-about-bl555-background-dark) 100%);
    color: var(--page-index-about-bl555-text-light);
}

.page-index-about-bl555__text--light {
    color: var(--page-index-about-bl555-text-light);
}

.page-index-about-bl555__text-center {
    text-align: center;
}

.page-index-about-bl555__timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-index-about-bl555__timeline-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 25px;
    border-radius: 10px;
    border-left: 5px solid var(--page-index-about-bl555-accent-color);
    transition: transform 0.3s ease;
}

.page-index-about-bl555__timeline-item:hover {
    transform: translateY(-5px);
}

.page-index-about-bl555__timeline-year {
    font-size: 1.8em;
    color: var(--page-index-about-bl555-accent-color);
    margin-bottom: 10px;
}

.page-index-about-bl555__feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    list-style: none;
    padding: 0;
    margin: 40px 0;
}

.page-index-about-bl555__feature-list li {
    background-color: var(--page-index-about-bl555-background-light);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-top: 4px solid var(--page-index-about-bl555-accent-color);
}

.page-index-about-bl555__feature-title {
    font-size: 1.5em;
    color: var(--page-index-about-bl555-primary-color);
    margin-bottom: 15px;
}

.page-index-about-bl555__image-full-width {
    margin: 40px 0;
    text-align: center;
}

.page-index-about-bl555__margin-top {
    margin-top: 30px;
}

.page-index-about-bl555__inline-link {
    color: var(--page-index-about-bl555-primary-color);
    text-decoration: underline;
    font-weight: bold;
    transition: color 0.3s ease;
}

.page-index-about-bl555__inline-link:hover {
    color: var(--page-index-about-bl555-button-hover-light);
}

.page-index-about-bl555__license-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-index-about-bl555__license-item {
    background-color: rgba(255, 255, 255, 0.15);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    border-bottom: 4px solid var(--page-index-about-bl555-accent-color);
}

.page-index-about-bl555__license-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    filter: brightness(1.2);
}

.page-index-about-bl555__license-title {
    font-size: 1.6em;
    margin-bottom: 10px;
    color: var(--page-index-about-bl555-accent-color);
}

.page-index-about-bl555__mission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.page-index-about-bl555__mission-item {
    background-color: var(--page-index-about-bl555-background-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.page-index-about-bl555__mission-title {
    font-size: 1.8em;
    color: var(--page-index-about-bl555-primary-color);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--page-index-about-bl555-accent-color);
    padding-bottom: 10px;
}

.page-index-about-bl555__value-list {
    list-style: none;
    padding: 0;
}

.page-index-about-bl555__value-list li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 25px;
}

.page-index-about-bl555__value-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    color: var(--page-index-about-bl555-accent-color);
}

.page-index-about-bl555__cta-section {
    background-color: var(--page-index-about-bl555-primary-color);
    color: var(--page-index-about-bl555-text-light);
    text-align: center;
    padding: 80px 0;
}

.page-index-about-bl555__cta-content {
    max-width: 800px;
}

.page-index-about-bl555__cta-title {
    font-size: 2.8em;
    color: var(--page-index-about-bl555-text-light);
    margin-bottom: 20px;
    font-weight: 700;
}

.page-index-about-bl555__cta-description {
    font-size: 1.3em;
    margin-bottom: 40px;
    opacity: 0.9;
}

.page-index-about-bl555__cta-button--large {
    padding: 18px 45px;
    font-size: 1.2em;
}

.page-index-about-bl555__faq-item {
    background-color: var(--page-index-about-bl555-background-light);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    margin-bottom: 15px;
    padding: 20px 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-index-about-bl555__faq-question {
    font-size: 1.4em;
    color: var(--page-index-about-bl555-primary-color);
    margin-bottom: 10px;
    cursor: pointer;
    font-weight: 600;
}

.page-index-about-bl555__faq-answer {
    font-size: 1.1em;
    color: var(--page-index-about-bl555-text-dark);
    margin-top: 10px;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-index-about-bl555__hero-title {
        font-size: 2.5em;
    }
    .page-index-about-bl555__hero-subtitle {
        font-size: 1.2em;
    }
    .page-index-about-bl555__section-title {
        font-size: 2em;
    }
    .page-index-about-bl555__image-text-layout {
        flex-direction: column;
    }
    .page-index-about-bl555__mission-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-index-about-bl555__section-padding {
        padding: 40px 0;
    }
    .page-index-about-bl555__hero-section {
        padding: 80px 0;
    }
    .page-index-about-bl555__hero-title {
        font-size: 2em;
    }
    .page-index-about-bl555__hero-subtitle {
        font-size: 1em;
    }
    .page-index-about-bl555__section-title {
        font-size: 1.8em;
    }
    .page-index-about-bl555__timeline,
    .page-index-about-bl555__feature-list,
    .page-index-about-bl555__license-grid {
        grid-template-columns: 1fr;
    }
    .page-index-about-bl555__cta-title {
        font-size: 2em;
    }
    .page-index-about-bl555__cta-description {
        font-size: 1em;
    }
    .page-index-about-bl555__cta-button--large {
        padding: 12px 30px;
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .page-index-about-bl555__hero-title {
        font-size: 1.8em;
    }
    .page-index-about-bl555__section-title {
        font-size: 1.5em;
    }
    .page-index-about-bl555__timeline-year {
        font-size: 1.5em;
    }
    .page-index-about-bl555__feature-title,
    .page-index-about-bl555__license-title,
    .page-index-about-bl555__mission-title,
    .page-index-about-bl555__faq-question {
        font-size: 1.2em;
    }
    .page-index-about-bl555__cta-title {
        font-size: 1.8em;
    }
}