/* style/index.css */

/* Biến CSS */
:root {
    --page-index-primary-color: #0F1A2B;
    --page-index-secondary-color: #FFD700;
    --page-index-text-light: #E0E0E0;
    --page-index-text-dark: #333333;
    --page-index-accent-color: #DC143C; /* Deep Red for call to action/emphasis */
    --page-index-border-radius: 8px;
    --page-index-transition-speed: 0.3s;
}

/* Cấu trúc chung cho trang index */
.page-index {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-index-text-dark);
}

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

.page-index-section-padding {
    padding: 80px 0;
}

.page-index-bg-dark {
    background-color: var(--page-index-primary-color);
    color: var(--page-index-text-light);
}

.page-index-bg-light {
    background-color: #F8F8F8;
    color: var(--page-index-text-dark);
}

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

.page-index-text-dark {
    color: var(--page-index-text-dark);
}

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

.page-index-section-title {
    font-size: 2.8em;
    color: var(--page-index-primary-color);
    margin-bottom: 20px;
    text-align: center;
    font-weight: 700;
    text-transform: uppercase;
}

.page-index-bg-dark .page-index-section-title {
    color: var(--page-index-secondary-color);
}

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

.page-index-bg-dark .page-index-section-description {
    color: var(--page-index-text-light);
}

.page-index-grid {
    display: grid;
    gap: 30px;
}

.page-index-grid-2-col {
    grid-template-columns: 1fr 1fr;
}

.page-index-align-center {
    align-items: center;
}

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

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

/* Nút chung */
.page-index-btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: var(--page-index-border-radius);
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color var(--page-index-transition-speed) ease, color var(--page-index-transition-speed) ease, transform var(--page-index-transition-speed) ease;
    border: none;
    text-align: center;
}

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

.page-index-btn-primary:hover {
    background-color: #E6C200; /* Slightly darker gold */
    transform: translateY(-2px);
}

.page-index-btn-secondary {
    background-color: transparent;
    color: var(--page-index-secondary-color);
    border: 2px solid var(--page-index-secondary-color);
    margin-left: 20px;
}

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

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

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

.page-index-btn-outline-dark {
    background-color: transparent;
    color: var(--page-index-primary-color);
    border: 1px solid var(--page-index-primary-color);
    padding: 10px 20px;
    font-size: 1em;
}

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

.page-index-btn-small {
    padding: 10px 20px;
    font-size: 1em;
}

.page-index-btn-large {
    padding: 18px 40px;
    font-size: 1.2em;
}

/* Hero Section */
.page-index-hero {
    position: relative;
    height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--page-index-text-light);
    text-align: center;
    overflow: hidden;
}

.page-index-hero-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.page-index-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(15, 26, 43, 0.8), rgba(15, 26, 43, 0.6));
    z-index: 2;
}

.page-index-hero-content {
    position: relative;
    z-index: 3;
    max-width: 900px;
}

.page-index-hero-title {
    font-size: 3.8em;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--page-index-secondary-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-index-hero-subtitle {
    font-size: 1.5em;
    margin-bottom: 40px;
    opacity: 0.9;
}

.page-index-hero-cta .page-index-btn {
    margin: 0 10px;
}

/* About Section */
.page-index-about-content p {
    margin-bottom: 15px;
    font-size: 1.1em;
    color: var(--page-index-text-dark);
}

.page-index-about-content strong {
    color: var(--page-index-primary-color);
}

/* Features Section */
.page-index-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-index-feature-item {
    background-color: var(--page-index-primary-color);
    border: 1px solid var(--page-index-secondary-color);
    border-radius: var(--page-index-border-radius);
    padding: 30px;
    text-align: center;
    transition: transform var(--page-index-transition-speed) ease, box-shadow var(--page-index-transition-speed) ease;
}

.page-index-feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.page-index-feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    filter: invert(80%) sepia(100%) saturate(1000%) hue-rotate(0deg) brightness(100%) contrast(100%); /* Gold tint for icons */
}

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

.page-index-feature-item p {
    font-size: 1em;
    color: var(--page-index-text-light);
}

/* Games Section */
.page-index-game-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-index-game-card {
    background-color: #FFFFFF;
    border-radius: var(--page-index-border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    text-align: center;
    transition: transform var(--page-index-transition-speed) ease, box-shadow var(--page-index-transition-speed) ease;
}

.page-index-game-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.page-index-game-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.page-index-game-card h3 {
    font-size: 1.8em;
    color: var(--page-index-primary-color);
    margin: 20px 15px 10px;
}

.page-index-game-card p {
    font-size: 1em;
    color: var(--page-index-text-dark);
    padding: 0 15px 20px;
}

.page-index-game-card .page-index-btn {
    margin-bottom: 20px;
}

/* Promotions Section */
.page-index-promotions-image {
    max-width: 800px;
    margin: 40px auto;
    border: 2px solid var(--page-index-secondary-color);
}

/* App Download Section */
.page-index-app-content p {
    margin-bottom: 20px;
    font-size: 1.1em;
    color: var(--page-index-text-dark);
}

.page-index-app-cta-buttons .page-index-btn {
    margin-right: 15px;
}

/* Detail Pages Section */
.page-index-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-index-detail-card {
    background-color: #FFFFFF;
    border-radius: var(--page-index-border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    padding: 25px;
    transition: transform var(--page-index-transition-speed) ease, box-shadow var(--page-index-transition-speed) ease;
}

.page-index-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.page-index-detail-title {
    font-size: 1.4em;
    margin-bottom: 10px;
}

.page-index-detail-title a {
    color: var(--page-index-primary-color);
    text-decoration: none;
    font-weight: bold;
}

.page-index-detail-title a:hover {
    color: var(--page-index-secondary-color);
    text-decoration: underline;
}

.page-index-detail-description {
    font-size: 0.95em;
    color: var(--page-index-text-dark);
    margin-bottom: 20px;
}

.page-index-detail-card .page-index-btn {
    display: inline-block;
    margin-top: 10px;
}

/* Final CTA Section */
.page-index-cta-final .page-index-section-title {
    color: var(--page-index-secondary-color);
}

.page-index-cta-final .page-index-section-description {
    color: var(--page-index-text-light);
    margin-bottom: 40px;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-index-hero-title {
        font-size: 3em;
    }
    .page-index-hero-subtitle {
        font-size: 1.3em;
    }
    .page-index-section-title {
        font-size: 2.2em;
    }
    .page-index-section-description {
        font-size: 1.1em;
    }
    .page-index-grid-2-col {
        grid-template-columns: 1fr;
    }
    .page-index-about-image, .page-index-app-image {
        order: -1; /* Image first on mobile */
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .page-index-hero {
        height: 60vh;
    }
    .page-index-hero-title {
        font-size: 2.5em;
    }
    .page-index-hero-subtitle {
        font-size: 1.1em;
    }
    .page-index-hero-cta .page-index-btn {
        display: block;
        width: 80%;
        margin: 15px auto;
    }
    .page-index-section-padding {
        padding: 60px 0;
    }
    .page-index-section-title {
        font-size: 1.8em;
    }
    .page-index-section-description {
        font-size: 1em;
    }
    .page-index-features-grid, .page-index-game-categories, .page-index-detail-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .page-index-hero-title {
        font-size: 2em;
    }
    .page-index-hero-subtitle {
        font-size: 1em;
    }
    .page-index-btn {
        padding: 12px 20px;
        font-size: 1em;
    }
    .page-index-btn-large {
        padding: 15px 30px;
        font-size: 1.1em;
    }
    .page-index-section-padding {
        padding: 40px 0;
    }
    .page-index-section-title {
        font-size: 1.5em;
    }
}