/* style/index.css */

/* Biến CSS */
:root {
    --page-index-primary-color: #1A2E44;
    --page-index-secondary-color: #FFD700;
    --page-index-text-light: #F0F2F5;
    --page-index-text-dark: #333;
    --page-index-bg-dark: #121212;
    --page-index-bg-light: #ffffff;
    --page-index-border-color: #3A4F6B;
    --page-index-shadow-color: rgba(0, 0, 0, 0.2);
}

/* Base styles for the page content */
.page-index {
    font-family: 'Arial', sans-serif;
    color: var(--page-index-text-light);
    background-color: var(--page-index-bg-dark);
    line-height: 1.6;
    padding-top: 0; /* Adjust if header is fixed */
}

/* Section styling */
.page-index__section-title {
    font-size: 2.8em;
    color: var(--page-index-text-light);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.page-index__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--page-index-secondary-color);
    border-radius: 2px;
}

.page-index__section-description {
    font-size: 1.1em;
    color: var(--page-index-text-light);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px auto;
}

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

.page-index__brand-name {
    color: var(--page-index-secondary-color);
    font-weight: bold;
}

/* Buttons */
.page-index__btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 15px var(--page-index-shadow-color);
}

.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);
}

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

.page-index__btn--promo {
    background-color: #FF4500; /* Orange-red for urgency */
    color: var(--page-index-text-light);
    padding: 16px 35px;
    font-size: 1.2em;
    border-radius: 10px;
}

.page-index__btn--promo:hover {
    background-color: #e03d00;
    transform: translateY(-3px) scale(1.02);
}

.page-index__btn--small {
    padding: 10px 20px;
    font-size: 0.95em;
    border-radius: 6px;
    background-color: var(--page-index-primary-color);
    color: var(--page-index-secondary-color);
    border: 1px solid var(--page-index-secondary-color);
}

.page-index__btn--small:hover {
    background-color: var(--page-index-secondary-color);
    color: var(--page-index-primary-color);
}

.page-index__btn--app {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: var(--page-index-primary-color);
    color: var(--page-index-text-light);
    border: 1px solid var(--page-index-secondary-color);
    padding: 12px 25px;
    font-size: 1em;
    border-radius: 8px;
}

.page-index__btn--app:hover {
    background-color: var(--page-index-secondary-color);
    color: var(--page-index-primary-color);
}

.page-index__app-icon {
    width: 24px;
    height: 24px;
}

.page-index__btn--detail {
    background-color: var(--page-index-primary-color);
    color: var(--page-index-secondary-color);
    border: 1px solid var(--page-index-secondary-color);
    padding: 8px 15px;
    font-size: 0.9em;
    border-radius: 5px;
}

.page-index__btn--detail:hover {
    background-color: var(--page-index-secondary-color);
    color: var(--page-index-primary-color);
}

.page-index__btn--large {
    padding: 18px 40px;
    font-size: 1.3em;
    border-radius: 12px;
}

/* Hero Section */
.page-index__hero-section {
    background: linear-gradient(135deg, var(--page-index-primary-color) 0%, #0d1a29 100%);
    padding: 100px 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    min-height: 600px;
}

.page-index__hero-content {
    max-width: 900px;
    z-index: 10;
    position: relative;
}

.page-index__main-heading {
    font-size: 4.5em;
    margin-bottom: 20px;
    color: var(--page-index-text-light);
    line-height: 1.2;
}

.page-index__sub-heading {
    font-size: 1.5em;
    color: var(--page-index-text-light);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-index__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.page-index__hero-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.15;
    overflow: hidden;
}

.page-index__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Promo Banner */
.page-index__promo-banner {
    background-color: #2b3e58; /* A slightly lighter dark tone */
    padding: 60px 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    position: relative;
    overflow: hidden;
}

.page-index__promo-content {
    max-width: 800px;
    z-index: 2;
}

.page-index__promo-title {
    font-size: 3.2em;
    color: var(--page-index-text-light);
    margin-bottom: 20px;
}

.page-index__promo-description {
    font-size: 1.2em;
    color: var(--page-index-text-light);
    margin-bottom: 30px;
}

.page-index__promo-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.08;
    overflow: hidden;
}

.page-index__promo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Features Section */
.page-index__features-section {
    background-color: var(--page-index-bg-dark);
    padding: 80px 20px;
}

.page-index__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-index__feature-item {
    background-color: var(--page-index-primary-color);
    padding: 30px;
    border-radius: 12px;
    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(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.page-index__feature-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 5px var(--page-index-secondary-color));
}

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

.page-index__feature-description {
    font-size: 1em;
    color: var(--page-index-text-light);
}

/* About okkinh Section */
.page-index__about-okkinh {
    background-color: #1f3750; /* Slightly lighter primary */
    padding: 80px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-index__about-content {
    flex: 1;
    min-width: 300px;
}

.page-index__about-content p {
    margin-bottom: 20px;
    font-size: 1.1em;
    color: var(--page-index-text-light);
}

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

.page-index__about-image {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* Game Showcase */
.page-index__game-showcase {
    background-color: var(--page-index-bg-dark);
    padding: 80px 20px;
}

.page-index__games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-index__game-card {
    background-color: var(--page-index-primary-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__game-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.page-index__game-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 3px solid var(--page-index-secondary-color);
}

.page-index__game-title {
    font-size: 1.6em;
    color: var(--page-index-secondary-color);
    margin: 20px 0 10px;
}

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

.page-index__game-card .page-index__btn--small {
    margin-bottom: 20px;
}

/* App Download Section */
.page-index__app-download {
    background-color: #1f3750; /* Slightly lighter primary */
    padding: 80px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-index__app-content {
    flex: 1;
    min-width: 300px;
}

.page-index__app-description {
    font-size: 1.1em;
    color: var(--page-index-text-light);
    margin-bottom: 30px;
}

.page-index__download-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

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

.page-index__app-image {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* Detail Pages List */
.page-index__detail-pages-list {
    background-color: var(--page-index-bg-dark);
    padding: 80px 20px;
}

.page-index__detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-index__detail-card {
    background-color: var(--page-index-primary-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.page-index__detail-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.page-index__detail-title {
    font-size: 1.8em;
    margin-bottom: 15px;
}

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

.page-index__detail-title a:hover {
    text-decoration: underline;
}

.page-index__detail-description {
    font-size: 1em;
    color: var(--page-index-text-light);
    margin-bottom: 25px;
    flex-grow: 1;
}

/* FAQ Section */
.page-index__faq-section {
    background-color: #1f3750; /* Slightly lighter primary */
    padding: 80px 20px;
}

.page-index__faq-item {
    background-color: var(--page-index-primary-color);
    margin: 0 auto 20px;
    padding: 25px 30px;
    border-radius: 10px;
    max-width: 900px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.page-index__faq-question {
    font-size: 1.5em;
    color: var(--page-index-secondary-color);
    margin-bottom: 15px;
    cursor: pointer;
    position: relative;
}

.page-index__faq-question::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

.page-index__faq-question.active::after {
    content: '-';
    transform: translateY(-50%) rotate(180deg);
}

.page-index__faq-answer {
    font-size: 1.05em;
    color: var(--page-index-text-light);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out, padding 0.5s ease-out;
    padding-top: 0;
}

.page-index__faq-answer.active {
    max-height: 300px; /* Adjust based on content */
    padding-top: 15px;
}

/* Call to Action */
.page-index__call-to-action {
    background: linear-gradient(90deg, var(--page-index-primary-color) 0%, #0d1a29 100%);
    padding: 80px 20px;
    text-align: center;
}

.page-index__cta-heading {
    font-size: 3.5em;
    color: var(--page-index-text-light);
    margin-bottom: 20px;
}

.page-index__cta-text {
    font-size: 1.3em;
    color: var(--page-index-text-light);
    margin-bottom: 40px;
}

/* Floating Ad */
.page-index__floating-ad {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--page-index-secondary-color);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
    z-index: 1000;
    overflow: hidden;
    animation: page-index__bounce 2s infinite ease-in-out;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.page-index__floating-ad a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--page-index-primary-color);
    padding: 10px 15px;
    font-weight: bold;
}

.page-index__floating-ad-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    margin-right: 10px;
}

.page-index__floating-ad-text {
    font-size: 1.1em;
}

@keyframes page-index__bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .page-index__main-heading {
        font-size: 3.5em;
    }
    .page-index__promo-title {
        font-size: 2.5em;
    }
    .page-index__features-grid,
    .page-index__games-grid,
    .page-index__detail-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    .page-index__about-okkinh, .page-index__app-download {
        flex-direction: column;
        text-align: center;
    }
    .page-index__about-image-wrapper, .page-index__app-image-wrapper {
        order: -1; /* Image above text on smaller screens */
    }
    .page-index__cta-heading {
        font-size: 2.8em;
    }
}

@media (max-width: 768px) {
    .page-index__main-heading {
        font-size: 2.8em;
    }
    .page-index__sub-heading {
        font-size: 1.2em;
    }
    .page-index__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .page-index__promo-title {
        font-size: 2em;
    }
    .page-index__section-title {
        font-size: 2.2em;
    }
    .page-index__features-grid,
    .page-index__games-grid,
    .page-index__detail-grid {
        grid-template-columns: 1fr;
    }
    .page-index__faq-question {
        font-size: 1.3em;
    }
    .page-index__cta-heading {
        font-size: 2.2em;
    }
    .page-index__floating-ad {
        bottom: 10px;
        right: 10px;
    }
    .page-index__floating-ad-text {
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    .page-index__main-heading {
        font-size: 2.2em;
    }
    .page-index__sub-heading {
        font-size: 1em;
    }
    .page-index__promo-title {
        font-size: 1.8em;
    }
    .page-index__section-title {
        font-size: 1.8em;
    }
    .page-index__btn {
        padding: 12px 20px;
        font-size: 1em;
    }
    .page-index__btn--promo {
        padding: 14px 25px;
        font-size: 1.1em;
    }
    .page-index__download-buttons {
        flex-direction: column;
    }
    .page-index__faq-question {
        font-size: 1.1em;
    }
    .page-index__cta-heading {
        font-size: 1.8em;
    }
    .page-index__floating-ad {
        display: none; /* Hide on very small screens if space is an issue */
    }
}