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

.page-khuyen-mai-chao-mung {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text-main); /* Default text color for the page */
    background-color: var(--color-background-main); /* Page specific background */
}

/* HERO Section */
.page-khuyen-mai-chao-mung__hero-section {
    padding-top: 10px; /* Small top padding, shared.css handles body padding */
    padding-bottom: 60px;
    background-color: var(--color-background-main); /* Ensure consistent dark background */
    position: relative;
    overflow: hidden;
}

.page-khuyen-mai-chao-mung__hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 40px 20px;
    gap: 40px;
}

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

.page-khuyen-mai-chao-mung__main-title {
    font-size: 3.2em; /* Adjusted for larger screens, will use clamp or media query */
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--color-gold); /* Using gold for main title */
    text-shadow: 0 0 10px rgba(242, 193, 78, 0.4);
}

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

.page-khuyen-mai-chao-mung__cta-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
    width: 100%;
}

.page-khuyen-mai-chao-mung__btn-primary,
.page-khuyen-mai-chao-mung__btn-secondary,
.page-khuyen-mai-chao-mung__btn-card {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    max-width: 100%; /* Ensure responsiveness */
}

.page-khuyen-mai-chao-mung__btn-primary {
    background: var(--button-gradient);
    color: var(--color-text-main);
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 15px rgba(17, 168, 78, 0.4);
}

.page-khuyen-mai-chao-mung__btn-primary:hover {
    background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
    box-shadow: 0 6px 20px rgba(17, 168, 78, 0.6);
    transform: translateY(-2px);
}

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

.page-khuyen-mai-chao-mung__btn-secondary:hover {
    background-color: rgba(242, 193, 78, 0.1);
    color: var(--color-gold);
    border-color: var(--color-gold);
    transform: translateY(-2px);
}

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

.page-khuyen-mai-chao-mung__hero-side-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    display: block; /* Ensure it behaves as a block element */
}

/* General Section Styling */
.page-khuyen-mai-chao-mung__content-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.page-khuyen-mai-chao-mung__section-title {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--color-gold);
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 0 0 8px rgba(242, 193, 78, 0.3);
}

.page-khuyen-mai-chao-mung__section-description {
    font-size: 1.1em;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

/* Promo Section */
.page-khuyen-mai-chao-mung__promo-section {
    background-color: var(--color-deep-green); /* Use deep green for contrast */
    padding: 60px 0;
}

.page-khuyen-mai-chao-mung__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai-chao-mung__promo-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--color-text-main); /* Ensure light text on dark card background */
}

.page-khuyen-mai-chao-mung__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai-chao-mung__card-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}

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

.page-khuyen-mai-chao-mung__card-text {
    font-size: 1em;
    color: var(--color-text-secondary);
    margin-bottom: 25px;
    flex-grow: 1; /* Allow text to take available space */
}

.page-khuyen-mai-chao-mung__btn-card {
    background: var(--button-gradient);
    color: var(--color-text-main);
    border: none;
    padding: 12px 25px;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.3s ease;
    max-width: 100%;
    width: fit-content; /* Adjust width based on content */
}

.page-khuyen-mai-chao-mung__btn-card:hover {
    background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
    transform: translateY(-1px);
}

.page-khuyen-mai-chao-mung__promo-note {
    text-align: center;
    margin-top: 40px;
    font-size: 1em;
    color: var(--color-text-secondary);
}

.page-khuyen-mai-chao-mung__text-link {
    color: var(--color-gold);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.page-khuyen-mai-chao-mung__text-link:hover {
    color: var(--color-glow);
    text-decoration: underline;
}

/* Guide Section */
.page-khuyen-mai-chao-mung__guide-section {
    padding: 60px 0;
    background-color: var(--color-background-main);
}

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

.page-khuyen-mai-chao-mung__step-item {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    color: var(--color-text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-khuyen-mai-chao-mung__step-number {
    width: 60px;
    height: 60px;
    background-color: var(--color-primary);
    color: var(--color-text-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2em;
    font-weight: 700;
    margin-bottom: 20px;
    box-shadow: 0 0 15px rgba(17, 168, 78, 0.5);
}

.page-khuyen-mai-chao-mung__step-title {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--color-gold);
    margin-bottom: 15px;
}

.page-khuyen-mai-chao-mung__step-text {
    font-size: 1em;
    color: var(--color-text-secondary);
}

.page-khuyen-mai-chao-mung__cta-bottom {
    text-align: center;
    margin-top: 50px;
}

/* FAQ Section */
.page-khuyen-mai-chao-mung__faq-section {
    background-color: var(--color-deep-green);
    padding: 60px 0;
}

.page-khuyen-mai-chao-mung__faq-list {
    max-width: 900px;
    margin: 40px auto 0;
}

.page-khuyen-mai-chao-mung__faq-item {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
    color: var(--color-text-main);
}

.page-khuyen-mai-chao-mung__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.15em;
    font-weight: 600;
    color: var(--color-gold);
    cursor: pointer;
    background-color: rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
    list-style: none; /* For details/summary */
}

.page-khuyen-mai-chao-mung__faq-question::-webkit-details-marker {
    display: none; /* Hide default marker */
}

.page-khuyen-mai-chao-mung__faq-question:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai-chao-mung__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.page-khuyen-mai-chao-mung__faq-item[open] .page-khuyen-mai-chao-mung__faq-toggle {
    transform: rotate(45deg); /* Rotate '+' to 'x' or '-' */
}

.page-khuyen-mai-chao-mung__faq-answer {
    padding: 0 25px 20px;
    font-size: 1em;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.page-khuyen-mai-chao-mung__faq-answer p {
    margin: 0;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-khuyen-mai-chao-mung__main-title {
        font-size: 2.8em;
    }
    .page-khuyen-mai-chao-mung__section-title {
        font-size: 2em;
    }
}

@media (max-width: 768px) {
    /* HERO Section */
    .page-khuyen-mai-chao-mung__hero-section {
        padding-top: 10px !important; /* Specific rule for fixed header spacing */
        padding-bottom: 40px;
    }

    .page-khuyen-mai-chao-mung__hero-container {
        flex-direction: column;
        padding: 30px 15px;
        gap: 30px;
    }

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

    .page-khuyen-mai-chao-mung__main-title {
        font-size: 2.2em;
        text-align: center;
    }

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

    .page-khuyen-mai-chao-mung__cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding: 0 15px; /* Add padding to container */
    }

    .page-khuyen-mai-chao-mung__btn-primary,
    .page-khuyen-mai-chao-mung__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        padding: 12px 20px;
        font-size: 1em;
        white-space: normal !important;
        word-wrap: break-word !important;
        box-sizing: border-box !important;
    }

    /* General Content Area */
    .page-khuyen-mai-chao-mung__content-area {
        padding: 40px 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    
    .page-khuyen-mai-chao-mung__section-title {
        font-size: 1.8em;
        margin-bottom: 15px;
    }

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

    /* Promo Section */
    .page-khuyen-mai-chao-mung__promo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-khuyen-mai-chao-mung__promo-card {
        padding: 20px;
    }

    .page-khuyen-mai-chao-mung__card-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }

    .page-khuyen-mai-chao-mung__btn-card {
        max-width: 100% !important;
        width: 100% !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        box-sizing: border-box !important;
    }

    /* Guide Section */
    .page-khuyen-mai-chao-mung__guide-section {
        padding: 40px 0;
    }

    .page-khuyen-mai-chao-mung__guide-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-khuyen-mai-chao-mung__step-item {
        padding: 25px;
    }

    .page-khuyen-mai-chao-mung__step-number {
        width: 50px;
        height: 50px;
        font-size: 1.8em;
    }

    .page-khuyen-mai-chao-mung__step-title {
        font-size: 1.3em;
    }

    .page-khuyen-mai-chao-mung__cta-bottom {
        margin-top: 30px;
    }

    /* FAQ Section */
    .page-khuyen-mai-chao-mung__faq-section {
        padding: 40px 0;
    }

    .page-khuyen-mai-chao-mung__faq-list {
        margin-top: 30px;
    }

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

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

    /* Universal image responsive rule for content area */
    .page-khuyen-mai-chao-mung img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }
}