/* style/xo-so.css */

/* Biến CSS */
:root {
    --page-xo-so-primary-color: #CC0000; /* Đỏ */
    --page-xo-so-secondary-color: #FFD700; /* Vàng kim */
    --page-xo-so-dark-background: #1a1a1a;
    --page-xo-so-light-text: #f8f8f8;
    --page-xo-so-gray-text: #cccccc;
    --page-xo-so-card-bg: #2a2a2a;
    --page-xo-so-border-color: #444;
}

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

.page-xo-so .highlight {
    color: var(--page-xo-so-secondary-color);
}

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

.page-xo-so__section {
    padding: 60px 0;
    text-align: center;
}

.page-xo-so__section-title {
    font-size: 2.8em;
    margin-bottom: 40px;
    color: var(--page-xo-so-light-text);
    font-weight: bold;
}

.page-xo-so__text-block {
    font-size: 1.1em;
    max-width: 800px;
    margin: 0 auto 20px auto;
    color: var(--page-xo-so-gray-text);
}

.page-xo-so a {
    color: var(--page-xo-so-secondary-color);
    text-decoration: none;
}

.page-xo-so a:hover {
    text-decoration: underline;
    color: var(--page-xo-so-primary-color);
}

/* Nút chung */
.page-xo-so__btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    font-size: 1em;
}

.page-xo-so__btn--primary {
    background-color: var(--page-xo-so-primary-color);
    color: var(--page-xo-so-light-text);
    border: 2px solid var(--page-xo-so-primary-color);
}

.page-xo-so__btn--primary:hover {
    background-color: darken(var(--page-xo-so-primary-color), 10%); /* Sử dụng hàm darken nếu có */
    background-color: #a30000; /* Fallback */
    border-color: #a30000;
}

.page-xo-so__btn--secondary {
    background-color: transparent;
    color: var(--page-xo-so-secondary-color);
    border: 2px solid var(--page-xo-so-secondary-color);
    margin-left: 15px;
}

.page-xo-so__btn--secondary:hover {
    background-color: var(--page-xo-so-secondary-color);
    color: var(--page-xo-so-dark-background);
}

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

.page-xo-so__btn--small {
    padding: 8px 15px;
    font-size: 0.9em;
    margin-top: 15px;
}

/* Hero Section */
.page-xo-so__hero {
    background: linear-gradient(135deg, var(--page-xo-so-primary-color) 0%, #800000 50%, var(--page-xo-so-dark-background) 100%);
    padding: 100px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: left;
    min-height: 500px;
    position: relative;
    overflow: hidden;
}

.page-xo-so__hero-content {
    max-width: 600px;
    z-index: 1;
    margin-right: 50px;
}

.page-xo-so__hero-title {
    font-size: 4em;
    color: var(--page-xo-so-light-text);
    margin-bottom: 20px;
    line-height: 1.1;
}

.page-xo-so__hero-description {
    font-size: 1.3em;
    color: var(--page-xo-so-gray-text);
    margin-bottom: 40px;
}

.page-xo-so__hero-image {
    position: relative;
    width: 500px;
    height: 350px;
    z-index: 0;
}

.page-xo-so__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 15px rgba(0, 0, 0, 0.5));
}

/* Giới thiệu Section */
.page-xo-so__intro {
    background-color: var(--page-xo-so-dark-background);
}

/* Game Types Section */
.page-xo-so__game-types {
    background-color: #222;
}

.page-xo-so__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-xo-so__card {
    background-color: var(--page-xo-so-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--page-xo-so-border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-xo-so__card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.page-xo-so__card-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    object-fit: contain;
}

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

.page-xo-so__card-description {
    font-size: 1em;
    color: var(--page-xo-so-gray-text);
}

.page-xo-so__cta-bottom {
    margin-top: 50px;
}

/* Hướng dẫn chơi Section */
.page-xo-so__guide {
    background-color: var(--page-xo-so-dark-background);
}

.page-xo-so__guide-steps {
    display: flex;
    justify-content: space-around;
    gap: 30px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.page-xo-so__step {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    background-color: var(--page-xo-so-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--page-xo-so-border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-xo-so__step-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
    background-color: var(--page-xo-so-primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-xo-so__step-icon img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

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

.page-xo-so__step p {
    color: var(--page-xo-so-gray-text);
    margin-bottom: 15px;
}

/* Mẹo và Chiến lược Section */
.page-xo-so__tips {
    background-color: #222;
}

.page-xo-so__tips-content {
    text-align: left;
    max-width: 900px;
    margin: 0 auto;
}

.page-xo-so__list {
    list-style-type: disc;
    padding-left: 40px;
    margin: 20px 0;
    color: var(--page-xo-so-gray-text);
}

.page-xo-so__list li {
    margin-bottom: 10px;
    font-size: 1.1em;
}

.page-xo-so__list li strong {
    color: var(--page-xo-so-secondary-color);
}

/* Why Us Section */
.page-xo-so__why-us {
    background-color: var(--page-xo-so-dark-background);
}

.page-xo-so__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-xo-so__feature-item {
    background-color: var(--page-xo-so-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--page-xo-so-border-color);
    text-align: center;
}

.page-xo-so__feature-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    object-fit: contain;
}

.page-xo-so__feature-title {
    font-size: 1.7em;
    color: var(--page-xo-so-primary-color);
    margin-bottom: 15px;
}

.page-xo-so__feature-description {
    color: var(--page-xo-so-gray-text);
}

/* Final CTA Section */
.page-xo-so__cta-final {
    background-color: #222;
    padding: 80px 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-xo-so__hero {
        flex-direction: column;
        text-align: center;
        padding: 80px 20px;
    }

    .page-xo-so__hero-content {
        margin-right: 0;
        margin-bottom: 40px;
    }

    .page-xo-so__hero-title {
        font-size: 3.5em;
    }

    .page-xo-so__hero-image {
        width: 100%;
        max-width: 400px;
        height: auto;
    }

    .page-xo-so__btn--secondary {
        margin-left: 0;
        margin-top: 15px;
    }

    .page-xo-so__hero-actions {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .page-xo-so__section-title {
        font-size: 2.2em;
    }
}

@media (max-width: 768px) {
    .page-xo-so__hero-title {
        font-size: 2.8em;
    }

    .page-xo-so__hero-description {
        font-size: 1.1em;
    }

    .page-xo-so__section {
        padding: 40px 0;
    }

    .page-xo-so__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
    }

    .page-xo-so__grid, .page-xo-so__guide-steps, .page-xo-so__features-grid {
        grid-template-columns: 1fr;
    }

    .page-xo-so__step {
        max-width: 100%;
    }

    .page-xo-so__list {
        padding-left: 20px;
    }
}

@media (max-width: 480px) {
    .page-xo-so__hero-title {
        font-size: 2em;
    }

    .page-xo-so__hero-description {
        font-size: 1em;
    }

    .page-xo-so__btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    .page-xo-so__btn--large {
        padding: 12px 25px;
        font-size: 1em;
    }
}