/* style/index.css */

/* Biến CSS */
:root {
    --page-index-primary-color: #003366;
    --page-index-secondary-color: #FFCC00;
    --page-index-text-light: #ffffff;
    --page-index-text-dark: #333333;
    --page-index-text-accent: #FFCC00;
    --page-index-bg-dark: #002244;
    --page-index-bg-light: #f0f2f5;
    --page-index-border-color: #004488;
    --page-index-shadow-color: rgba(0, 0, 0, 0.2);
}

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

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

.page-index__section-title {
    font-size: 2.5em;
    color: var(--page-index-primary-color);
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
}

.page-index__section-subtitle {
    font-size: 1.2em;
    color: var(--page-index-text-dark);
    text-align: center;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-index__text-content {
    font-size: 1.1em;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--page-index-text-dark);
}

.page-index__highlight {
    color: var(--page-index-secondary-color);
}

/* Buttons */
.page-index__btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    border: none;
    font-size: 1em;
}

.page-index__btn--primary {
    background-color: var(--page-index-secondary-color);
    color: var(--page-index-primary-color);
    box-shadow: 0 4px 15px var(--page-index-shadow-color);
}

.page-index__btn--primary:hover {
    background-color: #e6b800; /* Slightly darker gold */
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-index__btn--secondary {
    background-color: var(--page-index-primary-color);
    color: var(--page-index-text-light);
    border: 2px solid var(--page-index-secondary-color);
}

.page-index__btn--secondary:hover {
    background-color: var(--page-index-secondary-color);
    color: var(--page-index-primary-color);
    transform: translateY(-2px);
}

.page-index__btn--link {
    color: var(--page-index-primary-color);
    text-decoration: underline;
    background: none;
    padding: 0;
    font-size: 1em;
}

.page-index__btn--link:hover {
    color: var(--page-index-secondary-color);
    text-decoration: none;
}

.page-index__btn--large {
    padding: 15px 35px;
    font-size: 1.2em;
}

.page-index__link-inline {
    color: var(--page-index-primary-color);
    text-decoration: underline;
}

.page-index__link-inline:hover {
    color: var(--page-index-secondary-color);
}

/* Hero Section */
.page-index__hero {
    background: linear-gradient(135deg, var(--page-index-primary-color) 0%, #004488 100%);
    color: var(--page-index-text-light);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 600px;
}

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

.page-index__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: none; /* Ensure no filter is applied */
}

.page-index__hero .page-index__container {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.page-index__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
    color: var(--page-index-text-light);
}

.page-index__hero-description {
    font-size: 1.3em;
    margin-bottom: 40px;
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-index__hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* About Section */
.page-index__about {
    padding: 60px 0;
    background-color: var(--page-index-bg-light);
    text-align: center;
}

/* Features Section */
.page-index__features {
    padding: 60px 0;
    background-color: var(--page-index-bg-dark);
    color: var(--page-index-text-light);
}

.page-index__features .page-index__section-title,
.page-index__features .page-index__section-subtitle {
    color: var(--page-index-text-light);
}

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

.page-index__feature-item {
    background-color: var(--page-index-primary-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.page-index__feature-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    filter: none; /* Ensure no filter is applied */
}

.page-index__feature-title {
    font-size: 1.8em;
    color: var(--page-index-secondary-color);
    margin-bottom: 15px;
}

.page-index__feature-description {
    font-size: 1em;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.page-index__feature-item .page-index__btn--link {
    color: var(--page-index-secondary-color);
    border-bottom: 1px solid var(--page-index-secondary-color);
}

.page-index__feature-item .page-index__btn--link:hover {
    color: var(--page-index-text-light);
    border-color: var(--page-index-text-light);
}

/* Promotions Section */
.page-index__promotions {
    padding: 60px 0;
    background-color: var(--page-index-bg-light);
}

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

.page-index__promo-item {
    background-color: var(--page-index-text-light);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__promo-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.page-index__promo-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: none; /* Ensure no filter is applied */
}

.page-index__promo-title {
    font-size: 1.5em;
    color: var(--page-index-primary-color);
    margin: 20px 15px 10px;
}

.page-index__promo-description {
    font-size: 0.95em;
    color: var(--page-index-text-dark);
    padding: 0 15px 20px;
}

.page-index__promo-item .page-index__btn--primary {
    margin-bottom: 20px;
}

.page-index__promo-cta {
    text-align: center;
    margin-top: 40px;
    font-style: italic;
    color: var(--page-index-primary-color);
}

/* How-To Section */
.page-index__how-to {
    padding: 60px 0;
    background-color: var(--page-index-primary-color);
    color: var(--page-index-text-light);
    text-align: center;
}

.page-index__how-to .page-index__section-title,
.page-index__how-to .page-index__section-subtitle {
    color: var(--page-index-text-light);
}

.page-index__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-index__step-item {
    background-color: var(--page-index-bg-dark);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.page-index__step-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    filter: none; /* Ensure no filter is applied */
}

.page-index__step-title {
    font-size: 1.6em;
    color: var(--page-index-secondary-color);
    margin-bottom: 15px;
}

.page-index__step-description {
    font-size: 1em;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.page-index__step-item .page-index__btn--link {
    color: var(--page-index-secondary-color);
    border-bottom: 1px solid var(--page-index-secondary-color);
}

.page-index__step-item .page-index__btn--link:hover {
    color: var(--page-index-text-light);
    border-color: var(--page-index-text-light);
}

.page-index__cta-download {
    margin-top: 40px;
    font-size: 1.1em;
    color: var(--page-index-text-light);
}

/* Why Choose Section */
.page-index__why-choose {
    padding: 60px 0;
    background-color: var(--page-index-bg-light);
    text-align: center;
}

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

.page-index__why-choose-item {
    background-color: var(--page-index-text-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

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

.page-index__why-choose-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
    filter: none; /* Ensure no filter is applied */
}

.page-index__why-choose-title {
    font-size: 1.4em;
    color: var(--page-index-primary-color);
    margin-bottom: 10px;
}

.page-index__why-choose-description {
    font-size: 0.95em;
    line-height: 1.6;
    color: var(--page-index-text-dark);
    margin-bottom: 15px;
}

.page-index__why-choose-item .page-index__btn--link {
    color: var(--page-index-primary-color);
    border-bottom: 1px solid var(--page-index-primary-color);
}

.page-index__why-choose-item .page-index__btn--link:hover {
    color: var(--page-index-secondary-color);
    border-color: var(--page-index-secondary-color);
}

/* Related Pages Section */
.page-index__related-pages {
    padding: 60px 0;
    background-color: var(--page-index-bg-dark);
    color: var(--page-index-text-light);
    text-align: center;
}

.page-index__related-pages .page-index__section-title,
.page-index__related-pages .page-index__section-subtitle {
    color: var(--page-index-text-light);
}

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

.page-index__page-item {
    background-color: var(--page-index-primary-color);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    text-align: left;
}

.page-index__page-title {
    font-size: 1.5em;
    margin-bottom: 10px;
    line-height: 1.3;
}

.page-index__page-title a {
    color: var(--page-index-secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-index__page-title a:hover {
    color: var(--page-index-text-light);
}

.page-index__page-description {
    font-size: 0.95em;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 20px;
}

.page-index__page-item .page-index__btn--link {
    color: var(--page-index-secondary-color);
    border-bottom: 1px solid var(--page-index-secondary-color);
}

.page-index__page-item .page-index__btn--link:hover {
    color: var(--page-index-text-light);
    border-color: var(--page-index-text-light);
}

/* Final CTA Section */
.page-index__cta-final {
    padding: 80px 0;
    background: linear-gradient(45deg, var(--page-index-secondary-color) 0%, #e6b800 100%);
    color: var(--page-index-primary-color);
    text-align: center;
}

.page-index__cta-final .page-index__section-title {
    color: var(--page-index-primary-color);
}

.page-index__cta-description {
    font-size: 1.3em;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--page-index-primary-color);
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-index__hero-title {
        font-size: 2.8em;
    }
    .page-index__hero-description {
        font-size: 1.1em;
    }
    .page-index__section-title {
        font-size: 2em;
    }
    .page-index__feature-grid, .page-index__promo-grid, .page-index__steps-grid, .page-index__why-choose-grid, .page-index__page-list {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-index__hero {
        padding: 60px 0;
    }
    .page-index__hero-title {
        font-size: 2.2em;
    }
    .page-index__hero-description {
        font-size: 1em;
    }
    .page-index__hero-actions {
        flex-direction: column;
        gap: 15px;
    }
    .page-index__btn--large {
        width: 100%;
        box-sizing: border-box;
    }
    .page-index__section-title {
        font-size: 1.8em;
    }
    .page-index__section-subtitle {
        font-size: 1em;
    }
    .page-index__feature-item, .page-index__promo-item, .page-index__step-item, .page-index__why-choose-item, .page-index__page-item {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .page-index__hero-title {
        font-size: 1.8em;
    }
    .page-index__hero-description {
        font-size: 0.9em;
    }
    .page-index__section-title {
        font-size: 1.5em;
    }
    .page-index__hero-actions {
        gap: 10px;
    }
    .page-index__btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }
}