.page-khuyen-mai {
    font-family: Arial, sans-serif;
    color: #333333; /* Default text color for light body background */
    background-color: #F4F7FB; /* Body background color */
}

.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Aligned with common rule for body padding-top */
    padding-bottom: 60px;
    background-color: #F4F7FB;
}

.page-khuyen-mai__hero-container {
    max-width: 1170px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 40px 16px;
    flex-wrap: wrap;
}

.page-khuyen-mai__hero-content {
    flex: 1 1 50%;
    min-width: 300px;
    color: #1F2D3D;
}

.page-khuyen-mai__hero-title {
    font-size: 2.8em;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #1F2D3D; /* Text Main */
    max-width: 600px;
}

.page-khuyen-mai__hero-description {
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 30px;
    color: #1F2D3D; /* Text Main */
}

.page-khuyen-mai__hero-cta-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary,
.page-khuyen-mai__btn-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    cursor: pointer;
    box-sizing: border-box;
}

.page-khuyen-mai__btn-primary {
    background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
    color: #ffffff;
    border: none;
}

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
    background: #ffffff;
    color: #2F6BFF;
    border: 2px solid #2F6BFF;
}

.page-khuyen-mai__btn-secondary:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-link {
    background: #2F6BFF;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 0.9em;
    border-radius: 5px;
}

.page-khuyen-mai__btn-link:hover {
    opacity: 0.9;
}

.page-khuyen-mai__hero-image {
    flex: 1 1 40%;
    text-align: center;
    min-width: 300px;
}

.page-khuyen-mai__hero-main-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(47, 107, 255, 0.2);
    display: block;
    margin: 0 auto;
}

.page-khuyen-mai__content-area {
    max-width: 1170px;
    margin: 0 auto;
    padding: 40px 16px;
}

.page-khuyen-mai__section-title {
    font-size: 2.2em;
    font-weight: 700;
    color: #1F2D3D; /* Text Main */
    text-align: center;
    margin-bottom: 20px;
}

.page-khuyen-mai__section-title--light {
    color: #ffffff;
}

.page-khuyen-mai__section-description {
    font-size: 1.1em;
    line-height: 1.6;
    color: #1F2D3D; /* Text Main */
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.page-khuyen-mai__promo-list-section {
    padding-bottom: 60px;
    background-color: #F4F7FB;
}

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

.page-khuyen-mai__promo-card {
    background: #ffffff; /* Card BG */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__promo-card-image {
    width: 100%;
    height: 220px; /* 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;
    justify-content: space-between;
}

.page-khuyen-mai__promo-card-title {
    font-size: 1.4em;
    font-weight: 600;
    color: #1F2D3D; /* Text Main */
    margin-bottom: 15px;
}

.page-khuyen-mai__promo-card-text {
    font-size: 1em;
    line-height: 1.6;
    color: #1F2D3D;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__why-vivu88-section {
    background-color: #2F6BFF; /* Main color as dark background */
    padding-top: 60px;
    padding-bottom: 60px;
    color: #ffffff;
}

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

.page-khuyen-mai__feature-item {
    text-align: center;
    padding: 25px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__feature-icon-wrapper {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    background-color: #A5C4FF; /* Glow color */
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-khuyen-mai__feature-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.page-khuyen-mai__feature-title {
    font-size: 1.5em;
    font-weight: 600;
    margin-bottom: 15px;
    color: #ffffff;
}

.page-khuyen-mai__feature-text {
    font-size: 1em;
    line-height: 1.6;
    color: #ffffff;
}

.page-khuyen-mai__faq-section {
    padding-top: 60px;
    padding-bottom: 80px;
    background-color: #F4F7FB;
}

.page-khuyen-mai__faq-list {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-khuyen-mai__faq-item {
    background: #ffffff; /* Card BG */
    border: 1px solid #D6E2FF; /* Border color */
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.page-khuyen-mai__faq-item[open] {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.1em;
    font-weight: 600;
    color: #1F2D3D; /* Text Main */
    cursor: pointer;
    background-color: #ffffff;
    list-style: none;
}

.page-khuyen-mai__faq-question::-webkit-details-marker,
.page-khuyen-mai__faq-question::marker {
    display: none;
}

.page-khuyen-mai__faq-toggle {
    font-size: 1.5em;
    font-weight: bold;
    color: #2F6BFF;
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
    transform: rotate(45deg);
}

.page-khuyen-mai__faq-answer {
    padding: 0 25px 20px;
    font-size: 1em;
    line-height: 1.6;
    color: #1F2D3D;
}

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

/* Universal image responsive styles */
.page-khuyen-mai img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    .page-khuyen-mai {
        font-size: 15px;
    }

    .page-khuyen-mai__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px;
    }

    .page-khuyen-mai__hero-container {
        flex-direction: column;
        padding: 20px 15px;
        gap: 20px;
    }

    .page-khuyen-mai__hero-content,
    .page-khuyen-mai__hero-image {
        flex: 1 1 100%;
        min-width: unset;
    }

    .page-khuyen-mai__hero-title {
        font-size: 2em;
        text-align: center;
        max-width: 100%;
    }

    .page-khuyen-mai__hero-description {
        font-size: 1em;
        text-align: center;
    }

    .page-khuyen-mai__hero-cta-group {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary,
    .page-khuyen-mai__btn-link {
        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-khuyen-mai__content-area {
        padding: 20px 15px;
    }

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

    .page-khuyen-mai__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-khuyen-mai__promo-card-image {
        height: 180px; /* Adjust height for smaller screens */
    }

    .page-khuyen-mai__promo-card-content {
        padding: 18px;
    }

    .page-khuyen-mai__promo-card-title {
        font-size: 1.2em;
        margin-bottom: 10px;
    }

    .page-khuyen-mai__promo-card-text {
        font-size: 0.9em;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__why-vivu88-section {
        padding-top: 40px;
        padding-bottom: 40px;
    }

    .page-khuyen-mai__feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }

    .page-khuyen-mai__feature-icon-wrapper {
        width: 100px;
        height: 100px;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__feature-title {
        font-size: 1.3em;
    }

    .page-khuyen-mai__faq-section {
        padding-top: 40px;
        padding-bottom: 60px;
    }

    .page-khuyen-mai__faq-list {
        margin-top: 25px;
    }

    .page-khuyen-mai__faq-question {
        padding: 15px 20px;
        font-size: 1em;
    }

    .page-khuyen-mai__faq-answer {
        padding: 0 20px 15px;
        font-size: 0.95em;
    }

    /* Ensure all images and containers are responsive */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-khuyen-mai__section,
    .page-khuyen-mai__promo-card,
    .page-khuyen-mai__feature-item,
    .page-khuyen-mai__faq-item,
    .page-khuyen-mai__hero-cta-group {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
}

@media (max-width: 480px) {
    .page-khuyen-mai__hero-title {
        font-size: 1.8em;
    }

    .page-khuyen-mai__section-title {
        font-size: 1.6em;
    }

    .page-khuyen-mai__promo-card-image {
        height: 150px;
    }

    .page-khuyen-mai__feature-icon-wrapper {
        width: 80px;
        height: 80px;
    }
}