/* style/khuyen-mai.css */
/* Base styles for the page content */
.page-khuyen-mai {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-color);
}

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

/* General container for content sections */
.page-khuyen-mai__container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 40px 16px;
    box-sizing: border-box;
}

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

/* Descriptions */
.page-khuyen-mai__description {
    font-size: 1.1em;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 30px;
}

/* Buttons */
.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1em;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
    background: var(--btn-gradient);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

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

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

.page-khuyen-mai__btn-lg {
    padding: 16px 32px;
    font-size: 1.1em;
}

/* HERO Section */
.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Adjusted for fixed header, not var(--header-offset) */
    padding-bottom: 60px;
    background-color: var(--bg-color);
}

.page-khuyen-mai__hero-container {
    max-width: 1170px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 40px 16px;
    gap: 24px;
    box-sizing: border-box;
}

.page-khuyen-mai__hero-content {
    flex: 1 1 45%;
    min-width: 300px;
    text-align: left;
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.5em, 5vw, 3.5em);
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-khuyen-mai__hero-content .page-khuyen-mai__description {
    text-align: left;
    margin-bottom: 30px;
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: flex-start;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.page-khuyen-mai__hero-image {
    flex: 1 1 45%;
    min-width: 300px;
    text-align: center;
}

.page-khuyen-mai__hero-side-image {
    max-width: 600px;
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Intro Section (Module 1) */
.page-khuyen-mai__intro-section {
    padding: 80px 0;
}

.page-khuyen-mai__dark-bg {
    background-color: var(--bg-card);
    color: var(--text-main);
}

.page-khuyen-mai__intro-section .page-khuyen-mai__section-title {
    color: var(--text-main);
}

.page-khuyen-mai__intro-section .page-khuyen-mai__text-main {
    font-size: 1.1em;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.page-khuyen-mai__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-khuyen-mai__feature-item {
    text-align: center;
    padding: 20px;
    border-radius: 12px;
    background-color: var(--bg-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__icon-box-media {
    width: 240px;
    height: 240px;
    aspect-ratio: 1/1;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 0 5px rgba(17, 168, 78, 0.3);
}

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

.page-khuyen-mai__feature-title {
    font-size: 1.5em;
    color: var(--text-main);
    margin-bottom: 10px;
}

.page-khuyen-mai__feature-description {
    color: var(--text-secondary);
    font-size: 0.95em;
}

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

.page-khuyen-mai__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.page-khuyen-mai__promo-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__promo-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.page-khuyen-mai__promo-title {
    font-size: 1.4em;
    color: var(--text-main);
    margin-bottom: 10px;
}

.page-khuyen-mai__promo-description {
    color: var(--text-secondary);
    font-size: 0.95em;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* How-To-Claim Section */
.page-khuyen-mai__how-to-claim-section {
    padding: 80px 0;
}

.page-khuyen-mai__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-khuyen-mai__step-item {
    text-align: center;
    padding: 30px;
    background-color: var(--bg-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--divider-color);
}

.page-khuyen-mai__step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--btn-gradient);
    color: #ffffff;
    font-size: 1.8em;
    font-weight: bold;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(42, 209, 111, 0.4);
}

.page-khuyen-mai__step-title {
    font-size: 1.4em;
    color: var(--text-main);
    margin-bottom: 10px;
}

.page-khuyen-mai__step-description {
    color: var(--text-secondary);
    font-size: 0.95em;
}

.page-khuyen-mai__cta-wrapper {
    text-align: center;
    margin-top: 60px;
}

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

.page-khuyen-mai__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

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

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.1em;
    font-weight: bold;
    color: var(--text-main);
    cursor: pointer;
    background-color: var(--bg-card);
    list-style: none;
}

.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;
    margin-left: 15px;
    color: var(--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 25px 20px;
    color: var(--text-secondary);
    font-size: 0.95em;
    line-height: 1.7;
}

/* Contact CTA Section */
.page-khuyen-mai__contact-cta {
    padding: 80px 0;
    text-align: center;
}

.page-khuyen-mai__contact-flex {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.page-khuyen-mai__contact-text {
    max-width: 700px;
}

.page-khuyen-mai__contact-text .page-khuyen-mai__section-title {
    margin-bottom: 15px;
}

.page-khuyen-mai__contact-button-group {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

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

/* Mobile specific styles for all required sections */
@media (max-width: 768px) {
    /* General page adjustments */
    .page-khuyen-mai {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-khuyen-mai__container,
    .page-khuyen-mai__hero-container {
        padding-left: 15px !important;
        padding-right: 15px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

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

    /* HERO Section */
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px;
    }
    .page-khuyen-mai__hero-container {
        flex-direction: column;
        padding-top: 20px;
        padding-bottom: 20px;
    }
    .page-khuyen-mai__hero-content {
        flex: 1 1 100%;
        text-align: center;
    }
    .page-khuyen-mai__main-title {
        text-align: center;
        font-size: clamp(2em, 8vw, 2.8em);
    }
    .page-khuyen-mai__hero-content .page-khuyen-mai__description {
        text-align: center;
    }
    .page-khuyen-mai__cta-buttons {
        flex-direction: column;
        gap: 10px;
        justify-content: center;
        align-items: center;
        width: 100% !important;
    }
    .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-image {
        flex: 1 1 100%;
        margin-top: 30px;
    }

    /* Module 1 (Intro Section) - Three-column icon-box-media */
    .page-khuyen-mai__intro-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__features-grid {
        grid-template-columns: 1fr;
    }
    .page-khuyen-mai__icon-box-media {
        width: 200px;
        height: 200px;
        margin-bottom: 15px;
    }
    .page-khuyen-mai__feature-title {
        font-size: 1.3em;
    }

    /* Promo Section */
    .page-khuyen-mai__promo-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr;
    }
    .page-khuyen-mai__promo-card {
        flex-direction: column;
    }
    .page-khuyen-mai__promo-image {
        height: 180px;
    }
    .page-khuyen-mai__promo-content {
        padding: 20px;
    }
    .page-khuyen-mai__promo-title {
        font-size: 1.2em;
    }

    /* How-To-Claim Section */
    .page-khuyen-mai__how-to-claim-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__steps-grid {
        grid-template-columns: 1fr;
    }
    .page-khuyen-mai__step-item {
        padding: 20px;
    }
    .page-khuyen-mai__step-number {
        width: 50px;
        height: 50px;
        font-size: 1.5em;
        margin-bottom: 15px;
    }
    .page-khuyen-mai__step-title {
        font-size: 1.3em;
    }
    .page-khuyen-mai__cta-wrapper {
        margin-top: 40px;
    }

    /* FAQ Section */
    .page-khuyen-mai__faq-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__faq-question {
        padding: 15px 20px;
        font-size: 1em;
    }
    .page-khuyen-mai__faq-answer {
        padding: 0 20px 15px;
    }

    /* Contact CTA Section */
    .page-khuyen-mai__contact-cta {
        padding: 40px 0;
    }
    .page-khuyen-mai__contact-flex {
        gap: 20px;
    }
    .page-khuyen-mai__contact-button-group {
        flex-direction: column;
        gap: 10px;
    }

    /* Enforce max-width and height: auto for all content images on mobile */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    /* Exception for circular images to maintain aspect ratio */
    .page-khuyen-mai__icon-box-media img {
        height: 100% !important;
        object-fit: cover !important;
    }
}