/* style/khuyen-mai.css */

:root {
    --nwe88-red-primary: #C91F17;
    --nwe88-red-secondary: #E53935;
    --nwe88-gold-button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
    --nwe88-card-bg: #D32F2F;
    --nwe88-background-main: #B71C1C;
    --nwe88-text-main: #FFF5E1;
    --nwe88-border-gold: #F2B544;
    --nwe88-glow: #FFCC66;
    --nwe88-gold: #F4D34D;
    --nwe88-deep-red: #7A0E0E;
    --text-dark: #333333;
    --text-light: #ffffff;
    --card-light-bg: #ffffff;
    --card-dark-bg: var(--nwe88-card-bg);
}

.page-khuyen-mai {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--nwe88-text-main); /* Default text color for dark background */
    background-color: var(--nwe88-background-main);
}

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

.page-khuyen-mai__section-title {
    font-size: 2.8em;
    font-weight: 700;
    color: var(--nwe88-text-main);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.page-khuyen-mai__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--nwe88-border-gold);
    border-radius: 2px;
}

.page-khuyen-mai__text-block {
    font-size: 1.1em;
    margin-bottom: 20px;
    text-align: justify;
    color: var(--nwe88-text-main);
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--nwe88-deep-red);
    padding-top: 10px; /* Small top padding, body handles header offset */
    padding-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.page-khuyen-mai__hero-image-wrapper {
    width: 100%;
    max-height: 600px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
}

.page-khuyen-mai__hero-image {
    width: 100%;
    height: auto;
    object-fit: cover; /* Maintain aspect ratio and cover area */
    display: block;
}

.page-khuyen-mai__hero-content {
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
    z-index: 1;
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.2em, 4.5vw, 3.8em);
    font-weight: 900;
    color: var(--nwe88-gold);
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-khuyen-mai__description {
    font-size: 1.2em;
    color: var(--nwe88-text-main);
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary,
.page-khuyen-mai__card-btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1em;
    transition: all 0.3s ease;
    text-align: center;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    max-width: 100%;
}

.page-khuyen-mai__btn-primary {
    background: var(--nwe88-gold-button-gradient);
    color: var(--text-dark);
    border: none;
    box-shadow: 0 4px 15px rgba(255, 216, 106, 0.4);
}

.page-khuyen-mai__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 216, 106, 0.6);
}

.page-khuyen-mai__btn-secondary {
    background: transparent;
    color: var(--nwe88-gold);
    border: 2px solid var(--nwe88-gold);
    box-shadow: 0 4px 15px rgba(244, 211, 77, 0.2);
}

.page-khuyen-mai__btn-secondary:hover {
    background: var(--nwe88-gold);
    color: var(--text-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(244, 211, 77, 0.4);
}

/* Intro Section */
.page-khuyen-mai__intro-section {
    padding: 60px 0;
    background-color: var(--nwe88-deep-red);
    color: var(--nwe88-text-main);
}

/* Promotions Grid Section */
.page-khuyen-mai__promotions-grid-section {
    padding: 60px 0;
    background-color: var(--nwe88-background-main);
}

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

.page-khuyen-mai__promo-card {
    background-color: var(--card-light-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--text-dark); /* Dark text for light card background */
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

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

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

.page-khuyen-mai__card-title {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--nwe88-red-primary);
    margin-bottom: 15px;
    line-height: 1.3;
}

.page-khuyen-mai__card-description {
    font-size: 1em;
    color: var(--text-dark);
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__card-btn {
    background: var(--nwe88-red-primary);
    color: var(--text-light);
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 0.95em;
    font-weight: 600;
    align-self: flex-start;
    box-shadow: 0 3px 10px rgba(201, 31, 23, 0.4);
}

.page-khuyen-mai__card-btn:hover {
    background: var(--nwe88-red-secondary);
    box-shadow: 0 5px 15px rgba(229, 57, 53, 0.6);
}

/* How To Join Section */
.page-khuyen-mai__how-to-join-section {
    padding: 80px 0;
    background-color: var(--nwe88-deep-red);
    color: var(--nwe88-text-main);
}

.page-khuyen-mai__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__step-item {
    text-align: center;
    background-color: rgba(255, 255, 255, 0.08);
    padding: 30px 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.page-khuyen-mai__step-item:hover {
    transform: translateY(-5px);
}

.page-khuyen-mai__step-icon {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: 20px;
    border-radius: 50%;
    background-color: var(--nwe88-red-primary);
    padding: 10px;
    box-shadow: 0 0 0 5px rgba(255, 216, 106, 0.3);
}

.page-khuyen-mai__step-title {
    font-size: 1.4em;
    font-weight: 700;
    color: var(--nwe88-gold);
    margin-bottom: 10px;
}

.page-khuyen-mai__step-description {
    font-size: 1em;
    color: var(--nwe88-text-main);
}

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

/* Terms Section */
.page-khuyen-mai__terms-section {
    padding: 60px 0;
    background-color: var(--nwe88-background-main);
    color: var(--nwe88-text-main);
}

.page-khuyen-mai__terms-list {
    list-style: disc inside;
    margin-left: 20px;
    margin-bottom: 30px;
    font-size: 1.05em;
}

.page-khuyen-mai__terms-item {
    margin-bottom: 10px;
    color: var(--nwe88-text-main);
}

/* Why Choose Section */
.page-khuyen-mai__why-choose-section {
    padding: 80px 0;
    background-color: var(--nwe88-deep-red);
    color: var(--nwe88-text-main);
}

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

.page-khuyen-mai__advantage-item {
    background-color: rgba(255, 255, 255, 0.08);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__advantage-title {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--nwe88-gold);
    margin-bottom: 15px;
}

.page-khuyen-mai__advantage-description {
    font-size: 1em;
    color: var(--nwe88-text-main);
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
    padding: 60px 0;
    background-color: var(--nwe88-background-main);
}

.page-khuyen-mai__faq-list {
    margin-top: 40px;
}

.page-khuyen-mai__faq-item {
    background-color: var(--nwe88-card-bg);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: var(--nwe88-text-main);
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.2em;
    font-weight: 600;
    cursor: pointer;
    color: var(--nwe88-text-main);
    background-color: var(--nwe88-red-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: background-color 0.3s ease;
}

.page-khuyen-mai__faq-question:hover {
    background-color: var(--nwe88-red-secondary);
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-question {
    background-color: var(--nwe88-red-secondary);
}

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

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

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

.page-khuyen-mai__faq-item summary::marker {
    display: none;
}

.page-khuyen-mai__faq-answer {
    padding: 20px 25px;
    font-size: 1em;
    color: var(--nwe88-text-main);
    background-color: var(--nwe88-card-bg);
}

/* Final CTA Section */
.page-khuyen-mai__final-cta-section {
    padding: 80px 0;
    text-align: center;
    background-color: var(--nwe88-deep-red);
    color: var(--nwe88-text-main);
}

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

.page-khuyen-mai__cta-buttons,
.page-khuyen-mai__button-group,
.page-khuyen-mai__btn-container {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .page-khuyen-mai__container {
        padding: 20px 30px;
    }

    .page-khuyen-mai__section-title {
        font-size: 2.5em;
    }

    .page-khuyen-mai__main-title {
        font-size: clamp(2em, 4vw, 3.5em);
    }

    .page-khuyen-mai__description {
        font-size: 1.1em;
    }

    .page-khuyen-mai__promo-card {
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .page-khuyen-mai__container {
        padding-left: 15px;
        padding-right: 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-khuyen-mai__hero-section {
        padding-top: 10px !important;
        padding-bottom: 30px;
    }

    .page-khuyen-mai__hero-image-wrapper {
        max-height: 400px;
    }

    .page-khuyen-mai__hero-image {
        object-fit: contain !important; /* Mobile hero image should be contained */
        height: auto !important;
        max-height: none !important;
        aspect-ratio: unset !important;
    }

    .page-khuyen-mai__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em);
        margin-bottom: 15px;
    }

    .page-khuyen-mai__description {
        font-size: 1em;
        margin-bottom: 25px;
    }

    .page-khuyen-mai__cta-buttons {
        flex-direction: column !important;
        gap: 15px;
        padding-left: 15px;
        padding-right: 15px;
        max-width: 100% !important;
        width: 100% !important;
    }

    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary,
    .page-khuyen-mai__card-btn {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 20px !important;
        font-size: 1em !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-khuyen-mai__section-title {
        font-size: 2em;
        margin-bottom: 30px;
    }

    .page-khuyen-mai__intro-section,
    .page-khuyen-mai__promotions-grid-section,
    .page-khuyen-mai__how-to-join-section,
    .page-khuyen-mai__terms-section,
    .page-khuyen-mai__why-choose-section,
    .page-khuyen-mai__faq-section,
    .page-khuyen-mai__final-cta-section {
        padding: 40px 0;
    }

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

    .page-khuyen-mai__promo-image {
        height: 200px;
    }

    .page-khuyen-mai__card-title {
        font-size: 1.4em;
    }

    .page-khuyen-mai__card-description {
        font-size: 0.95em;
    }

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

    .page-khuyen-mai__step-item,
    .page-khuyen-mai__advantage-item {
        padding: 25px 15px;
    }

    .page-khuyen-mai__step-title,
    .page-khuyen-mai__advantage-title {
        font-size: 1.3em;
    }

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

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

    /* Universal image responsive styles for mobile */
    .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__hero-image-wrapper {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
}

/* General Dark/Light Background Contrast Fixes */
.page-khuyen-mai__dark-section {
    background-color: var(--nwe88-deep-red);
    color: var(--nwe88-text-main);
}

.page-khuyen-mai__light-bg {
    background-color: var(--card-light-bg);
    color: var(--text-dark);
}

.page-khuyen-mai__dark-bg {
    background-color: var(--nwe88-red-primary);
    color: var(--text-light);
}

/* Ensure all text in cards on light background is dark */
.page-khuyen-mai__promo-card.page-khuyen-mai__light-bg .page-khuyen-mai__card-title,
.page-khuyen-mai__promo-card.page-khuyen-mai__light-bg .page-khuyen-mai__card-description {
    color: var(--text-dark);
}

.page-khuyen-mai__promo-card.page-khuyen-mai__light-bg .page-khuyen-mai__card-btn {
    background: var(--nwe88-red-primary);
    color: var(--text-light);
}