/* Base styles for page-khuyen-mai */
.page-khuyen-mai {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main, #F2FFF6); /* Default text color for dark background */
    background-color: var(--background, #08160F); /* Dark background */
}

/* Section styling */
.page-khuyen-mai__section {
    padding: 60px 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    background-color: var(--background, #08160F);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.page-khuyen-mai__section--light {
    background-color: var(--card-bg, #11271B); /* Lighter dark background for cards/sections */
    color: var(--text-main, #F2FFF6);
    padding: 40px 20px;
}

.page-khuyen-mai__container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Headings */
.page-khuyen-mai__title {
    font-size: 3em;
    font-weight: bold;
    color: var(--glow, #57E38D); /* Using a bright color for titles */
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-khuyen-mai__subtitle {
    font-size: 1.8em;
    color: var(--text-main, #F2FFF6);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 600;
}

.page-khuyen-mai__heading-2 {
    font-size: 2.2em;
    color: var(--gold, #F2C14E);
    margin-bottom: 25px;
    text-align: left;
    font-weight: 700;
}

.page-khuyen-mai__heading-3 {
    font-size: 1.6em;
    color: var(--text-main, #F2FFF6);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__heading-4 {
    font-size: 1.3em;
    color: var(--text-secondary, #A7D9B8);
    margin-bottom: 10px;
    font-weight: 500;
}

/* Paragraphs and Lists */
.page-khuyen-mai p {
    margin-bottom: 1em;
    color: var(--text-secondary, #A7D9B8);
}

.page-khuyen-mai ul {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 1em;
    color: var(--text-secondary, #A7D9B8);
}

.page-khuyen-mai ul li {
    margin-bottom: 0.5em;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Small top padding, assuming body has header offset */
    background-color: var(--background, #08160F);
    position: relative;
    overflow: hidden;
    margin-bottom: 40px;
}

.page-khuyen-mai__hero-content {
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 15px;
}

.page-khuyen-mai__hero-description {
    font-size: 1.2em;
    color: var(--text-secondary, #A7D9B8);
    margin-bottom: 30px;
}

.page-khuyen-mai__hero-image {
    width: 100%;
    margin-top: 20px;
    position: relative;
    z-index: 1;
}

.page-khuyen-mai__hero-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    object-fit: cover; /* Desktop: cover */
    max-height: 500px;
}

/* Call to Action Buttons */
.page-khuyen-mai__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap; /* Allow wrapping for multiple buttons */
}

.page-khuyen-mai__btn-primary {
    display: inline-block;
    padding: 15px 30px;
    background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    color: #ffffff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1em;
    transition: background 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
    max-width: 100%; /* Ensure button is responsive */
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-khuyen-mai__btn-primary:hover {
    background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    background: transparent;
    color: var(--main-color, #11A84E);
    border: 2px solid var(--main-color, #11A84E);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1em;
    transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
    cursor: pointer;
    max-width: 100%; /* Ensure button is responsive */
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-khuyen-mai__btn-secondary:hover {
    background: var(--main-color, #11A84E);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Promotion Cards Grid */
.page-khuyen-mai__promotion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__promo-card {
    background-color: var(--card-bg, #11271B);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    border: 1px solid var(--border, #2E7A4E);
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
}

.page-khuyen-mai__promo-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__promo-card-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-card-title {
    font-size: 1.4em;
    color: var(--gold, #F2C14E);
    margin-bottom: 10px;
    font-weight: 700;
}

.page-khuyen-mai__promo-card-description {
    font-size: 0.95em;
    color: var(--text-secondary, #A7D9B8);
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__promo-card-link {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    color: #ffffff;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 0.9em;
    text-align: center;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__promo-card-link:hover {
    background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
}

/* Terms and Conditions */
.page-khuyen-mai__terms-list {
    list-style: decimal;
    margin-left: 25px;
    color: var(--text-secondary, #A7D9B8);
}

.page-khuyen-mai__terms-list li {
    margin-bottom: 10px;
}

/* FAQ Section */
details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--border, #2E7A4E);
  overflow: hidden;
  background: var(--card-bg, #11271B);
  color: var(--text-main, #F2FFF6);
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question::-webkit-details-marker {
  display: none;
}
details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question:hover {
  background: rgba(46, 122, 78, 0.2); /* Lighter hover for dark background */
}
.page-khuyen-mai__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main, #F2FFF6);
}
.page-khuyen-mai__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--glow, #57E38D); /* Bright color for toggle */
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  padding: 0 20px 20px;
  background: var(--deep-green, #0A4B2C); /* Slightly different dark background for answer */
  border-radius: 0 0 5px 5px;
  color: var(--text-secondary, #A7D9B8);
}

/* Article body for long text content */
.page-khuyen-mai__article-body {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
    background-color: var(--card-bg, #11271B); /* Use a slightly lighter dark background */
    border-radius: 8px;
    color: var(--text-secondary, #A7D9B8);
}

.page-khuyen-mai__article-body h2,
.page-khuyen-mai__article-body h3,
.page-khuyen-mai__article-body h4 {
    color: var(--gold, #F2C14E);
}
.page-khuyen-mai__article-body p {
    color: var(--text-secondary, #A7D9B8);
}
.page-khuyen-mai__article-body ul {
    list-style: disc;
    padding-left: 25px;
}
.page-khuyen-mai__article-body ol {
    list-style: decimal;
    padding-left: 25px;
}
.page-khuyen-mai__article-body li {
    margin-bottom: 8px;
    color: var(--text-secondary, #A7D9B8);
}
.page-khuyen-mai__article-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 8px;
}
.page-khuyen-mai__article-figure {
    text-align: center;
    margin: 30px 0;
}
.page-khuyen-mai__article-figcaption {
    font-style: italic;
    font-size: 0.9em;
    color: var(--text-secondary, #A7D9B8);
    margin-top: 10px;
}


/* Responsive styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__title {
        font-size: 2.5em;
    }
    .page-khuyen-mai__subtitle {
        font-size: 1.5em;
    }
    .page-khuyen-mai__heading-2 {
        font-size: 1.8em;
    }
    .page-khuyen-mai__heading-3 {
        font-size: 1.4em;
    }
    .page-khuyen-mai__hero-image img {
        max-height: 400px;
    }
    .page-khuyen-mai__section {
        padding: 40px 15px;
    }
    .page-khuyen-mai__promotion-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }
}


@media (max-width: 768px) {
    /* General content area */
    .page-khuyen-mai__section,
    .page-khuyen-mai__card,
    .page-khuyen-mai__container,
    .page-khuyen-mai__article-body {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* Images */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        object-fit: contain !important; /* Mobile: contain for hero */
    }

    /* Hero Section */
    .page-khuyen-mai__hero-section {
        padding-top: 10px; /* Small top padding */
        margin-bottom: 20px;
    }
    .page-khuyen-mai__hero-content {
        margin-bottom: 20px;
    }
    .page-khuyen-mai__title {
        font-size: clamp(1.8em, 7vw, 2.5em); /* Responsive font size */
        text-align: center;
        margin-top: 0;
    }
    .page-khuyen-mai__hero-description {
        font-size: 1em;
        margin-bottom: 20px;
    }
    .page-khuyen-mai__hero-image img {
        object-fit: contain !important; /* Ensure image is fully visible */
        aspect-ratio: unset !important; /* Remove fixed aspect ratio */
        max-height: 300px;
    }

    /* Buttons */
    .page-khuyen-mai__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary,
    .page-khuyen-mai a[class*="button"],
    .page-khuyen-mai 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: 12px 20px;
        font-size: 1em;
    }

    /* Promotion Grid */
    .page-khuyen-mai__promotion-grid {
        grid-template-columns: 1fr; /* Single column */
        gap: 20px;
    }
    .page-khuyen-mai__promo-card-image {
        height: 180px;
    }
    .page-khuyen-mai__promo-card-title {
        font-size: 1.2em;
    }
    .page-khuyen-mai__promo-card-description {
        font-size: 0.9em;
    }

    /* Section titles */
    .page-khuyen-mai__title {
        font-size: 2em;
    }
    .page-khuyen-mai__subtitle {
        font-size: 1.2em;
    }
    .page-khuyen-mai__heading-2 {
        font-size: 1.5em;
        text-align: center;
    }
    .page-khuyen-mai__heading-3 {
        font-size: 1.2em;
    }
    .page-khuyen-mai__heading-4 {
        font-size: 1.1em;
    }

    /* FAQ */
    details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question { padding: 15px; }
    .page-khuyen-mai__faq-qtext { font-size: 15px; }
    details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer { padding: 0 15px 15px; }

    /* Article body for long text content */
    .page-khuyen-mai__article-body {
        padding: 15px;
        text-align: left; /* Ensure text aligns left, not center */
    }
    .page-khuyen-mai__article-body h2,
    .page-khuyen-mai__article-body h3,
    .page-khuyen-mai__article-body h4 {
        text-align: center; /* Center align headings in article body */
    }
    .page-khuyen-mai__article-figure {
        margin: 20px 0;
    }
}