/* Biến màu sắc */
:root {
    --page-tai-xiu-primary-color: #11A84E;
    --page-tai-xiu-secondary-color: #22C768;
    --page-tai-xiu-background-dark: #08160F;
    --page-tai-xiu-card-background: #11271B;
    --page-tai-xiu-text-main: #F2FFF6;
    --page-tai-xiu-text-secondary: #A7D9B8;
    --page-tai-xiu-border-color: #2E7A4E;
    --page-tai-xiu-glow-color: #57E38D;
    --page-tai-xiu-gold-color: #F2C14E;
    --page-tai-xiu-divider-color: #1E3A2A;
    --page-tai-xiu-deep-green: #0A4B2C;
    --page-tai-xiu-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

/* Cấu trúc chung của trang */
.page-tai-xiu {
    font-family: Arial, sans-serif;
    color: var(--page-tai-xiu-text-main);
    background-color: var(--page-tai-xiu-background-dark);
    line-height: 1.6;
}

.page-tai-xiu__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
}

.page-tai-xiu__section-title {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
    color: var(--page-tai-xiu-gold-color);
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
}

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

.page-tai-xiu__description-text {
    font-size: 17px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px auto;
    color: var(--page-tai-xiu-text-secondary);
}

.page-tai-xiu__highlight {
    color: var(--page-tai-xiu-gold-color);
    font-weight: bold;
}

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

.page-tai-xiu a:hover {
    color: var(--page-tai-xiu-gold-color);
}

/* Hero Section */
.page-tai-xiu__hero-section {
    position: relative;
    width: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 10px; /* Small top padding */
    padding-bottom: 50px;
    box-sizing: border-box;
}

.page-tai-xiu__hero-image {
    width: 100%;
    height: auto;
    position: relative;
    margin-bottom: 30px;
}

.page-tai-xiu__hero-image img {
    width: 100%;
    height: 675px; /* Default height for desktop */
    object-fit: cover;
    display: block;
    border-radius: 10px;
}

.page-tai-xiu__hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 15px;
}

.page-tai-xiu__main-title {
    font-size: clamp(38px, 5vw, 56px);
    font-weight: 900;
    color: var(--page-tai-xiu-gold-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-tai-xiu__description {
    font-size: 20px;
    color: var(--page-tai-xiu-text-secondary);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-tai-xiu__btn-primary,
.page-tai-xiu__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    text-decoration: none;
    cursor: pointer;
    border: none;
    min-width: 180px;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-tai-xiu__btn-primary {
    background: var(--page-tai-xiu-button-gradient);
    color: var(--page-tai-xiu-text-main);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-tai-xiu__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-tai-xiu__btn-secondary {
    background-color: transparent;
    color: var(--page-tai-xiu-primary-color);
    border: 2px solid var(--page-tai-xiu-primary-color);
}

.page-tai-xiu__btn-secondary:hover {
    background-color: var(--page-tai-xiu-primary-color);
    color: var(--page-tai-xiu-text-main);
    transform: translateY(-3px);
}

.page-tai-xiu__btn-small {
    padding: 10px 20px;
    font-size: 16px;
    min-width: 150px;
}

.page-tai-xiu__btn-large {
    padding: 18px 40px;
    font-size: 20px;
    min-width: 250px;
}

/* Content Sections */
.page-tai-xiu__introduction-section,
.page-tai-xiu__rules-section,
.page-tai-xiu__how-to-play-section,
.page-tai-xiu__strategy-section,
.page-tai-xiu__advantages-section,
.page-tai-xiu__promotions-section,
.page-tai-xiu__faq-section,
.page-tai-xiu__conclusion-section {
    padding: 60px 0;
}

.page-tai-xiu__dark-section {
    background-color: var(--page-tai-xiu-background-dark);
}

.page-tai-xiu__introduction-section .page-tai-xiu__content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.page-tai-xiu__introduction-section .page-tai-xiu__text-block p {
    font-size: 17px;
    margin-bottom: 20px;
    color: var(--page-tai-xiu-text-secondary);
}

.page-tai-xiu__introduction-section .page-tai-xiu__image-block img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    display: block;
}

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

.page-tai-xiu__card {
    background-color: var(--page-tai-xiu-card-background);
    border: 1px solid var(--page-tai-xiu-border-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-sizing: border-box;
}

.page-tai-xiu__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-tai-xiu__card-title {
    font-size: 22px;
    color: var(--page-tai-xiu-gold-color);
    margin-top: 0;
    margin-bottom: 15px;
}

.page-tai-xiu__card p,
.page-tai-xiu__card ul {
    font-size: 16px;
    color: var(--page-tai-xiu-text-secondary);
    margin-bottom: 10px;
}

.page-tai-xiu__card ul {
    padding-left: 20px;
    list-style-type: disc;
}

.page-tai-xiu__card ul li {
    margin-bottom: 5px;
}

.page-tai-xiu__call-to-action-text {
    font-size: 18px;
    text-align: center;
    margin-top: 40px;
    color: var(--page-tai-xiu-text-main);
}

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

.page-tai-xiu__step-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.page-tai-xiu__step-card .page-tai-xiu__btn-primary {
    margin-top: auto;
    width: 100%;
}

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

.page-tai-xiu__strategy-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.page-tai-xiu__advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    list-style: none;
    padding: 0;
}

.page-tai-xiu__advantage-item {
    padding: 30px;
    text-align: center;
}

.page-tai-xiu__advantage-item .page-tai-xiu__card-title {
    font-size: 20px;
    margin-bottom: 10px;
}

.page-tai-xiu__advantage-item p {
    font-size: 16px;
    color: var(--page-tai-xiu-text-secondary);
}

.page-tai-xiu__cta-center {
    text-align: center;
    margin-top: 40px;
}

.page-tai-xiu__promotion-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-tai-xiu__promo-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.page-tai-xiu__promo-card .page-tai-xiu__btn-secondary {
    margin-top: auto;
    width: 100%;
}

/* FAQ Section */
details.page-tai-xiu__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--page-tai-xiu-border-color);
  overflow: hidden;
  background: var(--page-tai-xiu-card-background);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
details.page-tai-xiu__faq-item summary.page-tai-xiu__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  color: var(--page-tai-xiu-text-main);
}
details.page-tai-xiu__faq-item summary.page-tai-xiu__faq-question::-webkit-details-marker {
  display: none;
}
details.page-tai-xiu__faq-item summary.page-tai-xiu__faq-question:hover {
  background: rgba(var(--page-tai-xiu-primary-color), 0.1);
}
.page-tai-xiu__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--page-tai-xiu-gold-color);
}
.page-tai-xiu__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--page-tai-xiu-primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}
details.page-tai-xiu__faq-item .page-tai-xiu__faq-answer {
  padding: 0 25px 20px;
  background: var(--page-tai-xiu-deep-green);
  border-radius: 0 0 10px 10px;
  color: var(--page-tai-xiu-text-secondary);
}

.page-tai-xiu__faq-answer p {
    font-size: 16px;
    margin-bottom: 0;
}

/* General image styling */
.page-tai-xiu img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Media Queries for Responsive Design */
/* Tablet and smaller desktops */
@media (max-width: 1024px) {
    .page-tai-xiu__hero-image img {
        height: 500px;
    }
    .page-tai-xiu__main-title {
        font-size: clamp(32px, 4.5vw, 48px);
    }
    .page-tai-xiu__description {
        font-size: 18px;
    }
    .page-tai-xiu__introduction-section .page-tai-xiu__content-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .page-tai-xiu__introduction-section .page-tai-xiu__image-block {
        order: -1;
    }
    .page-tai-xiu__rules-list,
    .page-tai-xiu__steps-grid,
    .page-tai-xiu__strategy-grid,
    .page-tai-xiu__advantages-list,
    .page-tai-xiu__promotion-cards {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    .page-tai-xiu__card-title {
        font-size: 20px;
    }
    .page-tai-xiu__btn-primary,
    .page-tai-xiu__btn-secondary {
        padding: 12px 25px;
        font-size: 16px;
        min-width: 160px;
    }
    .page-tai-xiu__btn-large {
        padding: 15px 35px;
        font-size: 18px;
        min-width: 220px;
    }
}

/* Mobile devices */
@media (max-width: 768px) {
    .page-tai-xiu__hero-section {
        padding-top: 10px;
        padding-bottom: 30px;
    }
    .page-tai-xiu__hero-image img {
        object-fit: contain !important; /* Prevent cropping on mobile */
        aspect-ratio: unset !important;
        height: auto !important;
        max-height: 300px;
    }
    .page-tai-xiu__main-title {
        font-size: clamp(28px, 8vw, 40px);
        margin-bottom: 15px;
    }
    .page-tai-xiu__description {
        font-size: 16px;
        margin-bottom: 30px;
    }
    .page-tai-xiu__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding: 0 15px;
    }
    .page-tai-xiu__btn-primary,
    .page-tai-xiu__btn-secondary,
    .page-tai-xiu a[class*="button"],
    .page-tai-xiu a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-tai-xiu__section-title {
        font-size: clamp(24px, 7vw, 32px);
        margin-bottom: 20px;
    }
    .page-tai-xiu__section-title::after {
        width: 60px;
        height: 3px;
    }
    .page-tai-xiu__description-text {
        font-size: 15px;
        margin-bottom: 25px;
    }
    .page-tai-xiu__introduction-section .page-tai-xiu__content-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-tai-xiu__rules-list,
    .page-tai-xiu__steps-grid,
    .page-tai-xiu__strategy-grid,
    .page-tai-xiu__advantages-list,
    .page-tai-xiu__promotion-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-tai-xiu__card {
        padding: 20px;
    }
    .page-tai-xiu__card-title {
        font-size: 18px;
    }
    .page-tai-xiu__card p,
    .page-tai-xiu__card ul {
        font-size: 15px;
    }
    .page-tai-xiu__step-card img,
    .page-tai-xiu__strategy-item img,
    .page-tai-xiu__promo-card img {
        
    }
    .page-tai-xiu__faq-list {
        padding: 0 15px;
    }
    details.page-tai-xiu__faq-item summary.page-tai-xiu__faq-question {
        padding: 15px;
    }
    .page-tai-xiu__faq-qtext {
        font-size: 16px;
    }
    .page-tai-xiu__faq-toggle {
        font-size: 24px;
        width: 24px;
        margin-left: 10px;
    }
    details.page-tai-xiu__faq-item .page-tai-xiu__faq-answer {
        padding: 0 15px 15px;
    }
    .page-tai-xiu__faq-answer p {
        font-size: 15px;
    }
    .page-tai-xiu img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-tai-xiu__container,
    .page-tai-xiu__introduction-section,
    .page-tai-xiu__rules-section,
    .page-tai-xiu__how-to-play-section,
    .page-tai-xiu__strategy-section,
    .page-tai-xiu__advantages-section,
    .page-tai-xiu__promotions-section,
    .page-tai-xiu__faq-section,
    .page-tai-xiu__conclusion-section {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
}