/* style/index.css */

/* Biến CSS */
:root {
    --page-index-primary-color: #DC143C; /* Crimson */
    --page-index-secondary-color: #36454F; /* Carbon Gray */
    --page-index-text-light: #F0F0F0; /* Light text for dark backgrounds */
    --page-index-text-dark: #333333; /* Dark text for light backgrounds */
    --page-index-background-light: #FFFFFF;
    --page-index-background-dark: #222222;
    --page-index-accent-color: #23ebc3; /* Complementary to primary */
    --page-index-border-radius: 8px;
    --page-index-spacing-sm: 15px;
    --page-index-spacing-md: 30px;
    --page-index-spacing-lg: 60px;
}

/* To ensure text visibility and contrast as per WCAG AA, specific color pairings are enforced. */
/* Primary color #DC143C (Crimson) has a brightness of 84. */
/* Secondary color #36454F (Carbon Gray) has a brightness of 66. */

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

.page-index-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--page-index-spacing-md);
}

.page-index-highlight {
    color: var(--page-index-primary-color);
}

.page-index-section-title {
    font-size: 2.8em;
    color: var(--page-index-secondary-color);
    text-align: center;
    margin-bottom: var(--page-index-spacing-sm);
    font-weight: 700;
    line-height: 1.2;
}

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

/* Buttons */
.page-index-btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: var(--page-index-border-radius);
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    text-align: center;
}

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

.page-index-btn-primary:hover {
    background-color: #a80e2d; /* Darker crimson */
    border-color: #a80e2d;
}

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

.page-index-btn-secondary:hover {
    background-color: var(--page-index-primary-color);
    color: var(--page-index-text-light);
}

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

.page-index-btn-outline:hover {
    background-color: var(--page-index-secondary-color);
    color: var(--page-index-text-light);
}

.page-index-btn-small {
    padding: 8px 18px;
    font-size: 0.9em;
    border-width: 1px;
}

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

.page-index-btn-link:hover {
    color: #a80e2d;
}

/* Hero Section */
.page-index-hero {
    background: linear-gradient(135deg, var(--page-index-primary-color), var(--page-index-secondary-color));
    padding: var(--page-index-spacing-lg) 0;
    color: var(--page-index-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--page-index-spacing-md);
    min-height: 600px;
}

.page-index-hero-content {
    max-width: 600px;
    text-align: left;
    padding: var(--page-index-spacing-md);
}

.page-index-hero-title {
    font-size: 3.5em;
    margin-bottom: var(--page-index-spacing-sm);
    line-height: 1.1;
    color: var(--page-index-text-light);
}

.page-index-hero-title .page-index-highlight {
    color: var(--page-index-accent-color); /* Use accent for contrast on dark background */
}

.page-index-hero-description {
    font-size: 1.3em;
    margin-bottom: var(--page-index-spacing-md);
    color: rgba(255, 255, 255, 0.9);
}

.page-index-hero-actions .page-index-btn {
    margin-right: var(--page-index-spacing-sm);
}

.page-index-hero-image-wrapper {
    flex-shrink: 0;
    max-width: 500px;
    text-align: center;
}

.page-index-hero-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--page-index-border-radius);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* About Section */
.page-index-about {
    padding: var(--page-index-spacing-lg) 0;
    background-color: var(--page-index-background-light);
}

.page-index-about-grid {
    display: flex;
    align-items: center;
    gap: var(--page-index-spacing-md);
    flex-wrap: wrap;
}

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

.page-index-about-text p {
    margin-bottom: var(--page-index-spacing-sm);
    font-size: 1.1em;
    color: var(--page-index-text-dark);
}

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

.page-index-about-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--page-index-border-radius);
}

/* Features Section */
.page-index-features {
    background-color: var(--page-index-background-dark);
    padding: var(--page-index-spacing-lg) 0;
    color: var(--page-index-text-light);
}

.page-index-features .page-index-section-title {
    color: var(--page-index-text-light);
}

.page-index-features .page-index-section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.page-index-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--page-index-spacing-md);
    margin-top: var(--page-index-spacing-lg);
}

.page-index-feature-item {
    background-color: var(--page-index-secondary-color);
    padding: var(--page-index-spacing-md);
    border-radius: var(--page-index-border-radius);
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.page-index-feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--page-index-spacing-sm);
    filter: invert(1) brightness(1.5);
}

.page-index-feature-title {
    font-size: 1.8em;
    color: var(--page-index-accent-color);
    margin-bottom: var(--page-index-spacing-sm);
}

.page-index-feature-item p {
    font-size: 1em;
    color: rgba(255, 255, 255, 0.7);
}

/* Games Section */
.page-index-games {
    padding: var(--page-index-spacing-lg) 0;
    background-color: var(--page-index-background-light);
}

.page-index-game-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--page-index-spacing-md);
    margin-top: var(--page-index-spacing-lg);
}

.page-index-game-category-item {
    background-color: #f9f9f9;
    border: 1px solid #eee;
    border-radius: var(--page-index-border-radius);
    padding: var(--page-index-spacing-md);
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index-game-category-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.page-index-game-category-image {
    max-width: 100%;
    height: 180px; /* Consistent height for images */
    object-fit: cover;
    border-radius: var(--page-index-border-radius);
    margin-bottom: var(--page-index-spacing-sm);
}

.page-index-game-category-title {
    font-size: 1.8em;
    color: var(--page-index-secondary-color);
    margin-bottom: var(--page-index-spacing-sm);
}

.page-index-game-category-item p {
    font-size: 1em;
    color: var(--page-index-text-dark);
    margin-bottom: var(--page-index-spacing-sm);
}

/* Promotions Section */
.page-index-promotions {
    background-color: var(--page-index-primary-color);
    padding: var(--page-index-spacing-lg) 0;
    color: var(--page-index-text-light);
}

.page-index-promotions .page-index-section-title {
    color: var(--page-index-text-light);
}

.page-index-promotions .page-index-section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.page-index-promotions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--page-index-spacing-md);
    margin-top: var(--page-index-spacing-lg);
}

.page-index-promotion-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--page-index-spacing-md);
    border-radius: var(--page-index-border-radius);
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.page-index-promotion-image {
    max-width: 100%;
    height: 200px; /* Consistent height */
    object-fit: cover;
    border-radius: var(--page-index-border-radius);
    margin-bottom: var(--page-index-spacing-sm);
}

.page-index-promotion-title {
    font-size: 1.8em;
    color: var(--page-index-accent-color);
    margin-bottom: var(--page-index-spacing-sm);
}

.page-index-promotion-item p {
    font-size: 1em;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--page-index-spacing-md);
}

.page-index-promotions-note {
    text-align: center;
    margin-top: var(--page-index-spacing-lg);
    font-style: italic;
    color: rgba(255, 255, 255, 0.7);
}

/* App Download Section */
.page-index-app-download {
    background-color: var(--page-index-background-light);
    padding: var(--page-index-spacing-lg) 0;
}

.page-index-app-download-content {
    display: flex;
    align-items: center;
    gap: var(--page-index-spacing-md);
    flex-wrap: wrap;
    flex-direction: row-reverse; /* Image on right, text on left */
}

.page-index-app-download-text {
    flex: 1;
    min-width: 300px;
}

.page-index-app-download-text p {
    font-size: 1.1em;
    margin-bottom: var(--page-index-spacing-md);
    color: var(--page-index-text-dark);
}

.page-index-download-buttons .page-index-download-btn {
    margin-right: var(--page-index-spacing-sm);
    margin-bottom: var(--page-index-spacing-sm);
    min-width: 180px;
}

.page-index-app-download-image-wrapper {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.page-index-app-image {
    max-width: 80%;
    height: auto;
}

/* Detail Pages Section */
.page-index-detail-pages {
    padding: var(--page-index-spacing-lg) 0;
    background-color: #f4f4f4;
}

.page-index-detail-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--page-index-spacing-md);
    margin-top: var(--page-index-spacing-lg);
}

.page-index-detail-item {
    background-color: var(--page-index-background-light);
    padding: var(--page-index-spacing-md);
    border-radius: var(--page-index-border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.page-index-detail-item:hover {
    transform: translateY(-3px);
}

.page-index-detail-title {
    font-size: 1.6em;
    margin-bottom: var(--page-index-spacing-sm);
}

.page-index-detail-title a {
    color: var(--page-index-secondary-color);
    text-decoration: none;
}

.page-index-detail-title a:hover {
    color: var(--page-index-primary-color);
}

.page-index-detail-description {
    font-size: 0.95em;
    color: var(--page-index-text-dark);
    margin-bottom: var(--page-index-spacing-sm);
}

/* Bottom CTA Section */
.page-index-cta-bottom {
    background: linear-gradient(45deg, var(--page-index-secondary-color), var(--page-index-primary-color));
    padding: var(--page-index-spacing-lg) 0;
    text-align: center;
    color: var(--page-index-text-light);
}

.page-index-cta-bottom-title {
    font-size: 3em;
    margin-bottom: var(--page-index-spacing-sm);
    color: var(--page-index-text-light);
}

.page-index-cta-bottom-title .page-index-highlight {
    color: var(--page-index-accent-color);
}

.page-index-cta-bottom-description {
    font-size: 1.2em;
    margin-bottom: var(--page-index-spacing-md);
    color: rgba(255, 255, 255, 0.9);
}

.page-index-cta-bottom-btn {
    min-width: 250px;
}

/* Floating Promo */
.page-index-floating-promo {
    position: fixed;
    bottom: var(--page-index-spacing-md);
    right: var(--page-index-spacing-md);
    background-color: var(--page-index-primary-color);
    color: var(--page-index-text-light);
    border-radius: 50px;
    padding: 10px 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: transform 0.3s ease;
}

.page-index-floating-promo:hover {
    transform: scale(1.05);
}

.page-index-floating-promo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--page-index-text-light);
}

.page-index-floating-promo-icon {
    width: 30px;
    height: 30px;
    filter: invert(1);
}

.page-index-floating-promo-text {
    font-weight: bold;
    font-size: 1.1em;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-index-hero {
        flex-direction: column;
        text-align: center;
    }

    .page-index-hero-content,
    .page-index-hero-image-wrapper {
        max-width: 100%;
    }

    .page-index-hero-title {
        font-size: 2.8em;
    }

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

    .page-index-about-grid {
        flex-direction: column;
    }

    .page-index-app-download-content {
        flex-direction: column-reverse;
    }

    .page-index-cta-bottom-title {
        font-size: 2.2em;
    }

    .page-index-floating-promo {
        bottom: var(--page-index-spacing-sm);
        right: var(--page-index-spacing-sm);
        padding: 8px 15px;
        gap: 8px;
    }

    .page-index-floating-promo-text {
        font-size: 0.9em;
    }
}

@media (max-width: 768px) {
    .page-index-section-title {
        font-size: 2em;
    }

    .page-index-section-subtitle {
        font-size: 1em;
    }

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

    .page-index-hero-actions .page-index-btn {
        display: block;
        margin: 0 auto var(--page-index-spacing-sm) auto;
        width: 80%;
    }

    .page-index-download-buttons .page-index-download-btn {
        display: block;
        margin: 0 auto var(--page-index-spacing-sm) auto;
        width: 80%;
    }

    .page-index-cta-bottom-btn {
        width: 80%;
    }
}

@media (max-width: 480px) {
    .page-index-container {
        padding: 0 var(--page-index-spacing-sm);
    }

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

    .page-index-section-title {
        font-size: 1.6em;
    }

    .page-index-floating-promo-text {
        display: none;
    }
}