.page-khuyen-mai {
    font-family: Arial, sans-serif;
    color: #333333; /* Default text color for light body background */
    line-height: 1.6;
    background-color: #FFFFFF; /* Explicitly set for content area if body is default white */
}

.page-khuyen-mai__container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 40px 16px;
    box-sizing: border-box;
}

.page-khuyen-mai__section-title {
    font-size: 2.5em;
    color: #26A9E0; /* Brand color for titles */
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
}

.page-khuyen-mai__section-description {
    font-size: 1.1em;
    text-align: center;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #555555;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Small top padding, assuming shared.css handles body padding-top */
    padding-bottom: 60px;
    background: linear-gradient(to bottom, #e0f2f7, #ffffff); /* Light gradient background */
    text-align: center;
}

.page-khuyen-mai__hero-image-wrapper {
    margin-bottom: 40px;
}

.page-khuyen-mai__hero-banner {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.page-khuyen-mai__hero-content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 16px;
}

.page-khuyen-mai__main-title {
    font-size: 3em;
    color: #26A9E0;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
}

.page-khuyen-mai__intro-text {
    font-size: 1.2em;
    color: #555555;
    margin-bottom: 30px;
    line-height: 1.6;
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Ensure buttons wrap on smaller screens */
    width: 100%; /* Important for button containers */
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 16px;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%; /* Important for button responsiveness */
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
    background-color: #26A9E0; /* Main brand color */
    color: #FFFFFF;
    border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-primary:hover {
    background-color: #1e87b7;
    border-color: #1e87b7;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
    background-color: #FFFFFF;
    color: #26A9E0;
    border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-secondary:hover {
    background-color: #26A9E0;
    color: #FFFFFF;
    transform: translateY(-2px);
}

/* Promo Grid Section */
.page-khuyen-mai__promo-grid-section {
    padding: 60px 0;
    background-color: #f8f8f8;
}

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

.page-khuyen-mai__promo-card {
    background-color: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.page-khuyen-mai__promo-card-image {
    width: 100%;
    height: 200px; /* Fixed height for consistency */
    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: 1.5em;
    color: #26A9E0;
    margin-bottom: 15px;
    font-weight: bold;
}

.page-khuyen-mai__promo-card-text {
    font-size: 1em;
    color: #666666;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__promo-card-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #EA7C07; /* Login color for action */
    color: #FFFFFF;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    text-align: center;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__promo-card-btn:hover {
    background-color: #c76706;
}

/* How to Claim Section */
.page-khuyen-mai__how-to-claim-section {
    padding: 60px 0;
    background-color: #FFFFFF;
}

.page-khuyen-mai__steps-list {
    list-style: none;
    padding: 0;
    counter-reset: step-counter;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

.page-khuyen-mai__step-item {
    counter-increment: step-counter;
    position: relative;
    padding: 20px 20px 20px 60px;
    margin-bottom: 20px;
    background-color: #f0faff;
    border-left: 5px solid #26A9E0;
    border-radius: 8px;
    font-size: 1.1em;
    color: #333333;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.page-khuyen-mai__step-item::before {
    content: counter(step-counter);
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    background-color: #26A9E0;
    color: #FFFFFF;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 1em;
}

.page-khuyen-mai__cta-wrapper {
    text-align: center;
    margin-top: 40px;
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
    padding: 60px 0;
    background-color: #f8f8f8;
}

.page-khuyen-mai__faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.page-khuyen-mai__faq-content {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.page-khuyen-mai__faq-item {
    background-color: #FFFFFF;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.1em;
    font-weight: bold;
    color: #26A9E0;
    cursor: pointer;
    background-color: #f0faff;
    border-bottom: 1px solid #e0e0e0;
    list-style: none; /* For details/summary */
}

.page-khuyen-mai__faq-question::-webkit-details-marker {
    display: none; /* Hide default marker */
}

.page-khuyen-mai__faq-qtext {
    flex-grow: 1;
}

.page-khuyen-mai__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    width: 24px;
    text-align: center;
    pointer-events: none; /* Ensure click on summary works */
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
    content: "−"; /* Update content when open */
}

.page-khuyen-mai__faq-answer {
    padding: 15px 25px 20px;
    font-size: 1em;
    color: #555555;
    border-top: 1px solid #f0f0f0;
}

.page-khuyen-mai__faq-answer p {
    margin: 0;
}

.page-khuyen-mai__faq-image-wrapper {
    text-align: center;
}

.page-khuyen-mai__faq-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__container {
        padding: 30px 20px;
    }
    .page-khuyen-mai__main-title {
        font-size: 2.5em;
    }
    .page-khuyen-mai__section-title {
        font-size: 2em;
    }
    .page-khuyen-mai__promo-cards {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    .page-khuyen-mai__faq-grid {
        grid-template-columns: 1fr; /* Stack FAQ content and image */
    }
    .page-khuyen-mai__faq-image-wrapper {
        order: -1; /* Image appears above questions on smaller screens */
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    /* HERO Section */
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important; /* Small top padding for mobile */
        padding-bottom: 40px;
    }
    .page-khuyen-mai__hero-content-wrapper {
        padding: 0 15px;
    }
    .page-khuyen-mai__main-title {
        font-size: 2em !important; /* Mobile font size for H1 */
        margin-bottom: 15px;
    }
    .page-khuyen-mai__intro-text {
        font-size: 1em;
        margin-bottom: 25px;
    }
    .page-khuyen-mai__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        padding: 0 15px;
    }
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        padding: 12px 20px;
        font-size: 1em;
    }

    /* General containers and images */
    .page-khuyen-mai__container {
        padding: 20px 15px !important;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__hero-banner,
    .page-khuyen-mai__promo-card-image,
    .page-khuyen-mai__faq-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }

    /* Promo Grid Section */
    .page-khuyen-mai__promo-grid-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__section-title {
        font-size: 1.8em !important;
        margin-bottom: 15px;
    }
    .page-khuyen-mai__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }
    .page-khuyen-mai__promo-cards {
        grid-template-columns: 1fr; /* Single column */
        gap: 20px;
    }
    .page-khuyen-mai__promo-card-image {
        height: 180px; /* Slightly smaller fixed height for mobile cards */
    }
    .page-khuyen-mai__promo-card-title {
        font-size: 1.3em;
    }
    .page-khuyen-mai__promo-card-text {
        font-size: 0.9em;
    }
    .page-khuyen-mai__promo-card-btn {
        padding: 10px 15px;
        font-size: 0.95em;
    }

    /* How to Claim Section */
    .page-khuyen-mai__how-to-claim-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__steps-list {
        max-width: 100%;
        padding: 0 15px;
    }
    .page-khuyen-mai__step-item {
        padding: 15px 15px 15px 50px;
        font-size: 1em;
    }
    .page-khuyen-mai__step-item::before {
        width: 26px;
        height: 26px;
        font-size: 0.9em;
        left: 10px;
    }

    /* FAQ Section */
    .page-khuyen-mai__faq-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__faq-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .page-khuyen-mai__faq-item {
        margin-bottom: 10px;
    }
    .page-khuyen-mai__faq-question {
        padding: 15px 20px;
        font-size: 1em;
    }
    .page-khuyen-mai__faq-toggle {
        font-size: 1.3em;
    }
    .page-khuyen-mai__faq-answer {
        padding: 10px 20px 15px;
        font-size: 0.95em;
    }
    .page-khuyen-mai__faq-image-wrapper {
        margin-bottom: 20px;
    }
}