/* style/khuyen-mai.css */
:root {
    --primary-color: #2F6BFF;
    --secondary-color: #6FA3FF;
    --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
    --card-bg: #FFFFFF;
    --background-color-page: #F4F7FB;
    --text-main: #1F2D3D;
    --text-black: #000000;
    --border-color: #D6E2FF;
    --glow-color: #A5C4FF;
    --header-offset: 122px; /* Default, will be overridden by shared if present */
}

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

/* Ensure proper top spacing if shared.css doesn't set body padding-top */
.page-khuyen-mai.page-content {
    padding-top: 10px; /* Small top padding for first section */
}

.page-khuyen-mai__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
    box-sizing: border-box;
}

.page-khuyen-mai__section-title {
    font-size: 2.5em;
    color: var(--text-main);
    text-align: center;
    margin-bottom: 40px;
    font-weight: bold;
    line-height: 1.2;
}

.page-khuyen-mai__section-title--white {
    color: #ffffff;
}

.page-khuyen-mai__text-block {
    font-size: 1.1em;
    margin-bottom: 20px;
    text-align: justify;
}

.page-khuyen-mai__text-block--white {
    color: #f0f0f0;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: none;
}

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    box-shadow: 0 4px 15px rgba(var(--primary-color), 0.4);
}

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

.page-khuyen-mai__btn-secondary:hover {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(var(--primary-color), 0.2);
}

.page-khuyen-mai__btn-center {
    margin: 20px auto;
    display: block;
    width: fit-content;
}

.page-khuyen-mai__btn-white-border {
    border-color: #ffffff;
    color: #ffffff;
    background: transparent;
}

.page-khuyen-mai__btn-white-border:hover {
    background: #ffffff;
    color: var(--primary-color);
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 50px;
    padding-top: 10px; /* Small top padding */
}

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

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

.page-khuyen-mai__hero-content {
    text-align: center;
    padding: 40px 20px;
    max-width: 900px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-50px); /* Overlap with image slightly */
    background-color: var(--card-bg);
    margin-top: -50px; /* Adjust margin to pull up */
    position: relative; /* Ensure z-index works */
    z-index: 10;
}

.page-khuyen-mai__hero-title {
    font-size: clamp(2em, 3.5vw, 2.8em); /* Responsive H1 font size */
    color: var(--text-black);
    margin-bottom: 15px;
    font-weight: 800;
    line-height: 1.2;
}

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

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

/* Intro Section */
.page-khuyen-mai__intro-section {
    padding: 50px 0;
    background-color: var(--background-color-page);
}

/* Promotion Types Section */
.page-khuyen-mai__promotion-types-section {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: #ffffff;
}

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

.page-khuyen-mai__promotion-card {
    background-color: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--text-main);
}

.page-khuyen-mai__promotion-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
}

.page-khuyen-mai__card-title {
    font-size: 1.5em;
    color: var(--text-black);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-khuyen-mai__card-description {
    font-size: 1em;
    margin-bottom: 25px;
    flex-grow: 1;
}

.page-khuyen-mai__btn-card {
    width: 100%;
    margin-top: auto;
}

.page-khuyen-mai__card-button-group {
    display: flex;
    gap: 10px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: auto;
}

.page-khuyen-mai__card-button-group .page-khuyen-mai__btn-secondary {
    flex: 1;
    min-width: 120px;
}

/* How To Claim Section */
.page-khuyen-mai__how-to-claim-section {
    padding: 60px 0;
    background-color: var(--background-color-page);
}

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

.page-khuyen-mai__step-item {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__step-title {
    font-size: 1.6em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-khuyen-mai__step-item p {
    margin-bottom: 20px;
}

.page-khuyen-mai__step-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Terms Section */
.page-khuyen-mai__terms-section {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: #ffffff;
}

.page-khuyen-mai__terms-list {
    list-style: disc;
    padding-left: 25px;
    margin-top: 30px;
    margin-bottom: 30px;
}

.page-khuyen-mai__terms-item {
    margin-bottom: 10px;
    font-size: 1.05em;
}

/* Why Choose Section */
.page-khuyen-mai__why-choose-section {
    padding: 60px 0;
    background-color: var(--background-color-page);
}

.page-khuyen-mai__benefits-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    list-style: none;
    padding: 0;
    margin-top: 40px;
}

.page-khuyen-mai__benefits-item {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.07);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-khuyen-mai__benefits-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    display: block;
    object-fit: contain;
}

.page-khuyen-mai__benefits-title {
    font-size: 1.4em;
    color: var(--text-black);
    margin-bottom: 10px;
    font-weight: bold;
}

.page-khuyen-mai__benefits-item p {
    font-size: 0.95em;
}

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

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

.page-khuyen-mai__faq-item {
    background-color: var(--card-bg);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    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(--text-black);
    cursor: pointer;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    list-style: none; /* For details tag */
    user-select: none;
}

.page-khuyen-mai__faq-question::-webkit-details-marker, /* Hide default marker for Chrome */
.page-khuyen-mai__faq-question::marker { /* Hide default marker for Firefox */
    display: none;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-question {
    border-bottom: 1px solid var(--border-color);
}

.page-khuyen-mai__faq-qtext {
    flex-grow: 1;
    padding-right: 15px;
}

.page-khuyen-mai__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    transition: transform 0.3s ease;
    color: var(--primary-color);
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
    transform: rotate(45deg);
}

.page-khuyen-mai__faq-answer {
    padding: 15px 25px 25px;
    font-size: 1em;
    color: var(--text-main);
    line-height: 1.6;
}

/* Call to Action Bottom Section */
.page-khuyen-mai__cta-bottom-section {
    padding: 60px 0;
    background-color: var(--primary-color);
    text-align: center;
}

.page-khuyen-mai__cta-bottom-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Global Image Styles */
.page-khuyen-mai img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__hero-content {
        transform: translateY(-30px);
        margin-top: -30px;
    }

    .page-khuyen-mai__hero-title {
        font-size: clamp(1.8em, 4vw, 2.5em);
    }

    .page-khuyen-mai__promotion-grid,
    .page-khuyen-mai__benefits-list {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-khuyen-mai.page-content {
        padding-top: 10px !important;
    }

    .page-khuyen-mai__container {
        padding: 15px;
    }

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

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

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

    .page-khuyen-mai__hero-image {
        object-fit: contain !important; /* Mobile hero image: contain, not cover */
        width: 100% !important;
        height: auto !important;
        aspect-ratio: unset !important;
        max-height: none !important;
    }

    .page-khuyen-mai__hero-content {
        padding: 30px 15px;
        transform: translateY(-20px);
        margin-top: -20px;
        border-radius: 10px;
    }

    .page-khuyen-mai__hero-title {
        font-size: 1.8em;
        margin-bottom: 10px;
    }

    .page-khuyen-mai__hero-description {
        font-size: 1em;
        margin-bottom: 20px;
    }

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

    .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__hero-cta-buttons .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__hero-cta-buttons .page-khuyen-mai__btn-secondary {
        width: 100% !important;
    }

    .page-khuyen-mai__card-button-group {
        flex-direction: column;
        gap: 10px;
    }

    .page-khuyen-mai__card-button-group .page-khuyen-mai__btn-secondary {
        width: 100%;
        min-width: unset;
    }

    .page-khuyen-mai__promotion-grid,
    .page-khuyen-mai__benefits-list {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-khuyen-mai__card-image {
        height: auto;
        max-height: 250px;
    }

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

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

    .page-khuyen-mai__step-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .page-khuyen-mai__step-buttons .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__step-buttons .page-khuyen-mai__btn-secondary {
        width: 100%;
    }

    .page-khuyen-mai__terms-list {
        padding-left: 20px;
    }

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

    .page-khuyen-mai__faq-answer {
        padding: 10px 20px 20px;
    }

    .page-khuyen-mai__cta-bottom-content {
        padding: 0 15px;
    }

    /* Image specific rules 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 {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-khuyen-mai__promotion-types-section .page-khuyen-mai__container, /* Override for dark section */
    .page-khuyen-mai__terms-section .page-khuyen-mai__container,
    .page-khuyen-mai__cta-bottom-section .page-khuyen-mai__container {
        padding-left: 15px !important;
        padding-right: 15px !important;
    }
}

/* Ensure all images are content images, minimum size 200x200 */
.page-khuyen-mai img:not(.page-khuyen-mai__benefits-icon) {
    min-width: 200px;
    min-height: 200px;
}

/* Special handling for icons if they are smaller */
.page-khuyen-mai__benefits-icon {
    min-width: 60px;
    min-height: 60px;
}