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

.page-khuyen-mai {
    color: var(--color-text-main);
    background-color: var(--color-background);
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

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

.page-khuyen-mai__section-title,
.page-khuyen-mai__cta-title {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--color-text-main);
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-khuyen-mai__section-description,
.page-khuyen-mai__cta-description {
    font-size: 1.1em;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 40px;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Small top padding, relying on body for header offset */
    padding-bottom: 60px;
    background-color: var(--color-deep-green);
}

.page-khuyen-mai__hero-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
    padding: 60px 16px;
}

.page-khuyen-mai__hero-content {
    flex: 1 1 50%;
    min-width: 300px;
    color: var(--color-text-main);
}

.page-khuyen-mai__hero-title {
    font-size: clamp(2.2em, 4vw, 3.5em);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--color-gold);
}

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

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

.page-khuyen-mai__hero-side-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    text-align: center;
}

.page-khuyen-mai__btn-primary {
    background: var(--color-button-gradient);
    color: var(--color-text-main);
    border: 2px solid transparent;
}

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(42, 209, 111, 0.4);
}

.page-khuyen-mai__btn-secondary {
    background: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

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

/* Intro Section - Promo Grid */
.page-khuyen-mai__intro-section {
    padding: 80px 0;
    background-color: var(--color-background);
}

.page-khuyen-mai__promo-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(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.page-khuyen-mai__icon-box-media {
    width: 180px;
    height: 180px;
    margin: 0 auto 25px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-glow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-khuyen-mai__icon-box-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.page-khuyen-mai__card-title {
    font-size: 1.6em;
    font-weight: bold;
    color: var(--color-text-main);
    margin-bottom: 15px;
}

.page-khuyen-mai__card-text {
    font-size: 1em;
    color: var(--color-text-secondary);
    margin-bottom: 25px;
}

.page-khuyen-mai__card-link {
    color: var(--color-gold);
    text-decoration: none;
    font-weight: bold;
    position: relative;
    padding-bottom: 5px;
}

.page-khuyen-mai__card-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-gold);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}

.page-khuyen-mai__card-link:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* Details Section - Promo List */
.page-khuyen-mai__details-section {
    padding: 80px 0;
    background-color: var(--color-deep-green);
}

.page-khuyen-mai__promo-list {
    display: grid;
    gap: 40px;
    margin-top: 40px;
}

.page-khuyen-mai__promo-item {
    background-color: var(--color-card-bg);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.page-khuyen-mai__promo-image {
    flex: 1 1 45%;
    min-width: 300px;
    height: auto;
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__promo-content {
    flex: 1 1 50%;
    min-width: 300px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 15px;
}

.page-khuyen-mai__item-title {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--color-gold);
}

.page-khuyen-mai__item-text {
    font-size: 1.1em;
    color: var(--color-text-secondary);
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
    padding: 80px 0;
    background-color: var(--color-background);
}

.page-khuyen-mai__faq-list {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.page-khuyen-mai__faq-item {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--color-text-main);
    cursor: pointer;
    list-style: none;
    position: relative;
}

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

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

.page-khuyen-mai__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    color: var(--color-gold);
}

.page-khuyen-mai__faq-answer {
    padding: 0 25px 20px;
    font-size: 1em;
    color: var(--color-text-secondary);
}

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

/* CTA Banner */
.page-khuyen-mai__cta-banner {
    padding: 80px 0;
    background-color: var(--color-deep-green);
    text-align: center;
}

.page-khuyen-mai__cta-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.page-khuyen-mai__btn-large {
    padding: 16px 40px;
    font-size: 1.2em;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__hero-container {
        flex-direction: column;
        text-align: center;
    }

    .page-khuyen-mai__hero-content {
        text-align: center;
    }

    .page-khuyen-mai__cta-buttons {
        justify-content: center;
    }

    .page-khuyen-mai__promo-item {
        flex-direction: column;
    }

    .page-khuyen-mai__promo-image {
        width: 100%;
        height: auto;
    }
}

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

    .page-khuyen-mai__section-title,
    .page-khuyen-mai__cta-title {
        font-size: 2em;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__section-description,
    .page-khuyen-mai__cta-description {
        font-size: 1em;
        margin-bottom: 25px;
    }

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

    .page-khuyen-mai__hero-container {
        padding: 40px 10px;
        gap: 30px;
    }

    .page-khuyen-mai__hero-title {
        font-size: 2.5em;
        text-align: center;
    }

    .page-khuyen-mai__hero-description {
        font-size: 1.1em;
        text-align: center;
    }

    .page-khuyen-mai__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    /* Buttons */
    .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-left: 15px;
        padding-right: 15px;
    }

    .page-khuyen-mai__cta-buttons,
    .page-khuyen-mai__button-group,
    .page-khuyen-mai__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 10px;
        padding-right: 10px;
        flex-wrap: wrap !important;
        gap: 10px;
    }

    /* Intro Section */
    .page-khuyen-mai__intro-section {
        padding: 60px 0;
    }

    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-khuyen-mai__icon-box-media {
        width: 150px;
        height: 150px;
        margin-bottom: 20px;
    }

    .page-khuyen-mai__promo-card {
        padding: 25px;
    }

    /* Details Section */
    .page-khuyen-mai__details-section {
        padding: 60px 0;
    }

    .page-khuyen-mai__promo-item {
        flex-direction: column;
    }

    .page-khuyen-mai__promo-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-khuyen-mai__promo-content {
        padding: 25px;
    }

    .page-khuyen-mai__item-title {
        font-size: 1.5em;
    }

    .page-khuyen-mai__item-text {
        font-size: 1em;
    }

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

    .page-khuyen-mai__faq-question {
        padding: 15px 20px;
        font-size: 1.1em;
    }

    .page-khuyen-mai__faq-answer {
        padding: 0 20px 15px;
    }

    /* CTA Banner */
    .page-khuyen-mai__cta-banner {
        padding: 60px 0;
    }

    .page-khuyen-mai__btn-large {
        font-size: 1.1em;
        padding: 14px 25px;
    }

    /* Universal Image Adaptation for content area */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-khuyen-mai__section,
    .page-khuyen-mai__card,
    .page-khuyen-mai__container,
    .page-khuyen-mai__promo-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 10px;
        padding-right: 10px;
    }
}