/* Base styles for the Khuyến mãi page */
.page-khuyen-mai {
    font-family: 'Arial', sans-serif;
    color: #FFF3E6; /* Text Main */
    background: var(--background-color, #0D0E12); /* Default dark background from shared or custom */
    line-height: 1.6;
}

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

.page-khuyen-mai__section {
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.page-khuyen-mai__section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: #FFB04D; /* Glow */
    text-transform: uppercase;
}

.page-khuyen-mai__section-title--light {
    color: #FFF3E6; /* Text Main for light titles on dark backgrounds */
}

.page-khuyen-mai__text-block {
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 20px;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-khuyen-mai__text-block strong {
    color: #FFA53A;
}

.page-khuyen-mai__text-block a {
    color: #FFA53A;
    text-decoration: underline;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 550px;
    color: #FFF3E6;
    text-align: center;
    padding-top: 10px; /* Small top padding to avoid double spacing with body */
    background-color: #0D0E12;
    overflow: hidden;
}

.page-khuyen-mai__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.page-khuyen-mai__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5);
}

.page-khuyen-mai__hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 20px;
}

.page-khuyen-mai__main-title {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.2;
    color: #FFF3E6;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.page-khuyen-mai__hero-description {
    font-size: 22px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-khuyen-mai__btn-primary {
    background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
    color: #FFF3E6;
    border: 2px solid transparent;
}

.page-khuyen-mai__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 140, 26, 0.4);
}

.page-khuyen-mai__btn-secondary {
    background: transparent;
    color: #FFA53A;
    border: 2px solid #FFA53A;
}

.page-khuyen-mai__btn-secondary:hover {
    background: #FFA53A;
    color: #0D0E12;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 165, 58, 0.2);
}

/* Intro Section */
.page-khuyen-mai__intro-section {
    background-color: var(--background-color, #0D0E12);
}

/* Promo Types Section */
.page-khuyen-mai__promo-types-section {
    background-color: #17191F; /* Card BG */
}

.page-khuyen-mai__dark-bg {
    background-color: #17191F;
    color: #FFF3E6;
}

.page-khuyen-mai__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__promo-card {
    background-color: #0D0E12;
    border: 1px solid #A84F0C;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(255, 140, 26, 0.2);
}

.page-khuyen-mai__promo-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
    max-width: 100%;
    display: block;
}

.page-khuyen-mai__promo-card-title {
    font-size: 24px;
    font-weight: 700;
    color: #FFA53A;
    margin-bottom: 15px;
}

.page-khuyen-mai__promo-card-description {
    font-size: 16px;
    color: #FFF3E6;
    flex-grow: 1;
}

/* Detailed Promos Section */
.page-khuyen-mai__detailed-promos {
    background-color: var(--background-color, #0D0E12);
}

.page-khuyen-mai__promo-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__detail-card {
    background-color: #17191F;
    border: 1px solid #A84F0C;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    max-width: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(255, 140, 26, 0.2);
}

.page-khuyen-mai__detail-card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    max-width: 100%;
}

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

.page-khuyen-mai__detail-card-title {
    font-size: 26px;
    font-weight: 700;
    color: #FFA53A;
    margin-bottom: 15px;
}

.page-khuyen-mai__detail-card-content p {
    font-size: 16px;
    color: #FFF3E6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__detail-card-content .page-khuyen-mai__btn-primary,
.page-khuyen-mai__detail-card-content .page-khuyen-mai__btn-secondary {
    margin-top: auto;
    width: fit-content;
    align-self: flex-start;
}

/* Guide Section */
.page-khuyen-mai__guide-section {
    background-color: #0D0E12;
}

.page-khuyen-mai__steps-list {
    list-style: none;
    padding: 0;
    margin: 40px auto 0 auto;
    max-width: 900px;
}

.page-khuyen-mai__step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    background-color: #17191F;
    border: 1px solid #A84F0C;
    border-radius: 10px;
    padding: 20px;
}

.page-khuyen-mai__step-number {
    font-size: 32px;
    font-weight: 900;
    color: #FF8C1A;
    margin-right: 20px;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid #FF8C1A;
    border-radius: 50%;
    background-color: #0D0E12;
}

.page-khuyen-mai__step-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: #FFA53A;
    margin-top: 0;
    margin-bottom: 10px;
}

.page-khuyen-mai__step-content p {
    font-size: 16px;
    color: #FFF3E6;
    margin: 0;
}

.page-khuyen-mai__cta-wrapper {
    text-align: center;
    margin-top: 50px;
}

/* Terms Section */
.page-khuyen-mai__terms-section {
    background-color: var(--background-color, #0D0E12);
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
    background-color: #17191F; /* Card BG */
}

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

details.page-khuyen-mai__faq-item {
    margin-bottom: 15px;
    border-radius: 10px;
    border: 1px solid #A84F0C;
    overflow: hidden;
    background: #0D0E12;
}

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__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: #FFF3E6;
    font-weight: 600;
}

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(255, 140, 26, 0.1);
}

.page-khuyen-mai__faq-qtext {
    flex: 1;
    font-size: 18px;
    line-height: 1.5;
    text-align: left;
    color: #FFF3E6;
}

.page-khuyen-mai__faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: #FFA53A;
    flex-shrink: 0;
    margin-left: 15px;
    width: 28px;
    text-align: center;
}

details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
    padding: 0 25px 20px;
    background: #0D0E12;
    border-radius: 0 0 10px 10px;
    color: #FFF3E6;
    font-size: 16px;
}

.page-khuyen-mai__faq-answer p {
    margin: 0;
    padding-top: 10px;
}

/* Conclusion Section */
.page-khuyen-mai__conclusion-section {
    background-color: var(--background-color, #0D0E12);
    text-align: center;
}

/* Global image settings for content area */
.page-khuyen-mai img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Media Queries for Responsiveness */
@media (max-width: 1024px) {
    .page-khuyen-mai__hero-image img {
        object-fit: cover;
    }
    .page-khuyen-mai__main-title {
        font-size: 48px;
    }
    .page-khuyen-mai__hero-description {
        font-size: 20px;
    }
    .page-khuyen-mai__section-title {
        font-size: 32px;
    }
    .page-khuyen-mai__promo-grid,
    .page-khuyen-mai__promo-details-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    .page-khuyen-mai__promo-card-image,
    .page-khuyen-mai__detail-card-image {
        height: 180px;
    }
}

@media (max-width: 849px) {
    .page-khuyen-mai__hero-image img {
        object-fit: contain !important; /* Prevent cropping on smaller screens */
        aspect-ratio: unset !important;
    }
}

@media (max-width: 768px) {
    .page-khuyen-mai {
        font-size: 16px;
        line-height: 1.6;
    }
    .page-khuyen-mai__container {
        padding: 0 15px; /* Add padding for mobile content sections */
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__section {
        padding: 40px 0;
    }
    .page-khuyen-mai__hero-section {
        min-height: 400px;
        padding-top: 10px;
    }
    .page-khuyen-mai__main-title {
        font-size: clamp(32px, 8vw, 40px); /* Responsive font size */
        margin-bottom: 15px;
    }
    .page-khuyen-mai__hero-description {
        font-size: 18px;
        margin-bottom: 25px;
        padding: 0 10px;
    }
    .page-khuyen-mai__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 15px;
    }
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        font-size: 16px;
        padding: 12px 20px;
        white-space: normal !important;
        word-wrap: break-word !important;
        box-sizing: border-box !important;
    }

    .page-khuyen-mai__section-title {
        font-size: 28px;
        margin-bottom: 30px;
        padding: 0 10px;
    }
    .page-khuyen-mai__text-block {
        font-size: 15px;
        padding: 0 10px;
    }

    /* Promo Types Section */
    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr; /* Single column for promo cards */
        gap: 20px;
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__promo-card {
        padding: 20px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    .page-khuyen-mai__promo-card-image {
        height: 150px;
        max-width: 100% !important;
        width: 100% !important;
    }
    .page-khuyen-mai__promo-card-title {
        font-size: 20px;
    }

    /* Detailed Promos Section */
    .page-khuyen-mai__promo-details-grid {
        grid-template-columns: 1fr; /* Single column for detailed promo cards */
        gap: 20px;
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__detail-card {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    .page-khuyen-mai__detail-card-image {
        height: 200px;
        max-width: 100% !important;
        width: 100% !important;
    }
    .page-khuyen-mai__detail-card-title {
        font-size: 22px;
    }

    /* Guide Section */
    .page-khuyen-mai__steps-list {
        margin-top: 30px;
        padding: 0 10px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 15px;
    }
    .page-khuyen-mai__step-number {
        margin-right: 0;
        margin-bottom: 15px;
        font-size: 28px;
        width: 45px;
        height: 45px;
    }
    .page-khuyen-mai__step-content h3 {
        font-size: 18px;
    }
    .page-khuyen-mai__step-content p {
        font-size: 15px;
    }
    .page-khuyen-mai__cta-wrapper {
        margin-top: 40px;
    }

    /* FAQ Section */
    .page-khuyen-mai__faq-list {
        margin-top: 30px;
        padding: 0 10px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
        padding: 15px 20px;
    }
    .page-khuyen-mai__faq-qtext {
        font-size: 16px;
    }
    .page-khuyen-mai__faq-toggle {
        font-size: 20px;
        width: 24px;
        height: 24px;
    }
    details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
        padding: 0 20px 15px;
        font-size: 15px;
    }

    /* General image responsiveness */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__section,
    .page-khuyen-mai__card,
    .page-khuyen-mai__container,
    .page-khuyen-mai__promo-card,
    .page-khuyen-mai__detail-card,
    .page-khuyen-mai__step-item,
    .page-khuyen-mai__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
}