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

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

.page-khuyen-mai__hero-section {
    position: relative;
    padding: 10px 0 40px 0;
    background-color: var(--khuyen-mai-deep-green);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.page-khuyen-mai__hero-image-wrapper {
    width: 100%;
    max-height: 500px;
    overflow: hidden;
    margin-bottom: 20px;
}

.page-khuyen-mai__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.page-khuyen-mai__hero-content {
    max-width: 900px;
    padding: 0 20px;
    color: var(--khuyen-mai-text-main);
}

.page-khuyen-mai__main-title {
    font-size: clamp(2em, 3.5vw, 2.8em);
    font-weight: 700;
    color: var(--khuyen-mai-gold-color);
    margin-bottom: 15px;
    line-height: 1.2;
}

.page-khuyen-mai__hero-description {
    font-size: 1.1em;
    margin-bottom: 30px;
    color: var(--khuyen-mai-text-secondary);
}

.page-khuyen-mai__hero-cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-khuyen-mai__btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.05em;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
}

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

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(42, 209, 111, 0.4);
}

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

.page-khuyen-mai__btn-secondary:hover {
    background: var(--khuyen-mai-gold-color);
    color: var(--khuyen-mai-background-color);
    box-shadow: 0 4px 10px rgba(242, 193, 78, 0.4);
}

.page-khuyen-mai__content-section {
    padding: 40px 0;
    background-color: var(--khuyen-mai-background-color);
}

.page-khuyen-mai__article-wrap {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-khuyen-mai__section-title {
    font-size: 2.2em;
    color: var(--khuyen-mai-gold-color);
    text-align: center;
    margin-bottom: 30px;
    font-weight: 700;
}

.page-khuyen-mai__paragraph {
    font-size: 1.05em;
    color: var(--khuyen-mai-text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.page-khuyen-mai__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.page-khuyen-mai__card {
    background-color: var(--khuyen-mai-card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 1px solid var(--khuyen-mai-border-color);
}

.page-khuyen-mai__card-title {
    font-size: 1.6em;
    color: var(--khuyen-mai-gold-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-khuyen-mai__card-text {
    font-size: 0.95em;
    color: var(--khuyen-mai-text-secondary);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 20px;
}

.page-khuyen-mai__card-btn {
    margin-top: auto;
    text-align: center;
}

.page-khuyen-mai__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
    text-align: center;
}

.page-khuyen-mai__step-card .page-khuyen-mai__card-title {
    color: var(--khuyen-mai-primary-color);
}

.page-khuyen-mai__figure {
    margin: 30px auto;
    max-width: 680px;
    text-align: center;
}

.page-khuyen-mai__image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    margin-bottom: 15px;
    object-fit: cover;
}

.page-khuyen-mai__figcaption {
    font-size: 0.9em;
    color: var(--khuyen-mai-text-secondary);
    font-style: italic;
}

.page-khuyen-mai__terms-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.page-khuyen-mai__terms-item {
    background-color: var(--khuyen-mai-card-bg);
    border-left: 5px solid var(--khuyen-mai-primary-color);
    padding: 20px 25px;
    border-radius: 8px;
}

.page-khuyen-mai__terms-item .page-khuyen-mai__item-title {
    font-size: 1.4em;
    color: var(--khuyen-mai-text-main);
    margin-bottom: 10px;
    font-weight: 600;
}

.page-khuyen-mai__terms-item .page-khuyen-mai__item-text {
    font-size: 0.95em;
    color: var(--khuyen-mai-text-secondary);
    line-height: 1.6;
}

.page-khuyen-mai__advantage-list {
    list-style: none;
    padding: 0;
    margin-bottom: 40px;
}

.page-khuyen-mai__advantage-list .page-khuyen-mai__list-item {
    background-color: var(--khuyen-mai-card-bg);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--khuyen-mai-border-color);
}

.page-khuyen-mai__advantage-list .page-khuyen-mai__item-title {
    font-size: 1.5em;
    color: var(--khuyen-mai-gold-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.page-khuyen-mai__advantage-list .page-khuyen-mai__item-text {
    font-size: 1em;
    color: var(--khuyen-mai-text-secondary);
    line-height: 1.6;
}

.page-khuyen-mai__faq-container {
    margin-top: 30px;
}

.page-khuyen-mai__faq-item {
    background-color: var(--khuyen-mai-card-bg);
    border: 1px solid var(--khuyen-mai-border-color);
    border-radius: 8px;
    margin-bottom: 15px;
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    cursor: pointer;
    font-size: 1.15em;
    font-weight: 600;
    color: var(--khuyen-mai-text-main);
    list-style: none;
}

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

.page-khuyen-mai__faq-question .page-khuyen-mai__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    color: var(--khuyen-mai-primary-color);
    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 20px 20px 20px;
    font-size: 1em;
    color: var(--khuyen-mai-text-secondary);
    line-height: 1.6;
}

.page-khuyen-mai__final-cta {
    text-align: center;
    margin-top: 40px;
    padding-bottom: 20px;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
    .page-khuyen-mai__main-title {
        font-size: 2.5em;
    }
    .page-khuyen-mai__section-title {
        font-size: 2em;
    }
    .page-khuyen-mai__promo-grid,
    .page-khuyen-mai__steps-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }
    .page-khuyen-mai__card {
        padding: 25px;
    }
}

@media (max-width: 768px) {
    /* 1. Top section (title + CTAs) */
    .page-khuyen-mai__hero-section {
        padding: 10px 0 30px 0 !important;
    }
    .page-khuyen-mai__hero-content {
        padding: 0 15px;
    }
    .page-khuyen-mai__main-title {
        font-size: 2.2em !important;
        margin-bottom: 10px;
    }
    .page-khuyen-mai__hero-description {
        font-size: 1em;
        margin-bottom: 20px;
    }
    .page-khuyen-mai__hero-cta-buttons {
        flex-direction: column;
        gap: 10px;
        padding: 0 15px;
    }

    /* 2. Single column long text container */
    .page-khuyen-mai__article-wrap {
        padding: 0 15px !important;
    }
    .page-khuyen-mai__content-section {
        padding: 30px 0 !important;
    }
    .page-khuyen-mai__section-title {
        font-size: 1.8em !important;
        margin-bottom: 25px;
    }
    .page-khuyen-mai__paragraph {
        font-size: 0.95em;
        margin-bottom: 15px;
    }

    /* 3. General images and figures */
    .page-khuyen-mai__image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-khuyen-mai__figure {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 15px;
    }
    .page-khuyen-mai__promo-card,
    .page-khuyen-mai__step-card,
    .page-khuyen-mai__terms-item,
    .page-khuyen-mai__advantage-list .page-khuyen-mai__list-item,
    .page-khuyen-mai__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 20px;
        padding-right: 20px;
    }
    .page-khuyen-mai__promo-grid,
    .page-khuyen-mai__steps-grid {
        grid-template-columns: 1fr !important;
        gap: 15px;
    }

    /* 4. Buttons and button containers */
    .page-khuyen-mai__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__hero-cta-buttons,
    .page-khuyen-mai__final-cta {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important;
        gap: 10px;
    }
    .page-khuyen-mai__final-cta .page-khuyen-mai__btn {
        width: auto !important; /* Allow button to naturally fit content if not full width */
        min-width: 200px;
    }

    /* 5. FAQ section */
    .page-khuyen-mai__faq-question {
        font-size: 1em !important;
        padding: 15px;
    }
    .page-khuyen-mai__faq-answer {
        padding: 0 15px 15px 15px;
        font-size: 0.95em;
    }
    .page-khuyen-mai__card-title {
        font-size: 1.4em !important;
    }
    .page-khuyen-mai__card-text {
        font-size: 0.9em;
    }
    .page-khuyen-mai__terms-item .page-khuyen-mai__item-title {
        font-size: 1.2em !important;
    }
    .page-khuyen-mai__terms-item .page-khuyen-mai__item-text {
        font-size: 0.9em;
    }
    .page-khuyen-mai__advantage-list .page-khuyen-mai__item-title {
        font-size: 1.3em !important;
    }
    .page-khuyen-mai__advantage-list .page-khuyen-mai__item-text {
        font-size: 0.95em;
    }
}