/* 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: #F4F7FB;
    --text-main: #1F2D3D;
    --text-dark: #000000;
    --border-color: #D6E2FF;
    --glow-color: #A5C4FF;
}

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

.page-khuyen-mai__content-area {
    max-width: 1170px;
    margin: 0 auto;
    padding: 40px 16px;
    box-sizing: border-box;
}

.page-khuyen-mai__section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-khuyen-mai__section-description {
    font-size: 18px;
    color: var(--text-main);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
    background: var(--button-gradient);
    padding-top: 10px; /* Small top padding, body handles header offset */
    padding-bottom: 60px;
    color: #ffffff;
}

.page-khuyen-mai__hero-container {
    max-width: 1170px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 60px 16px;
    gap: 40px;
    box-sizing: border-box;
}

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

.page-khuyen-mai__main-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: #ffffff;
    max-width: 600px;
}

.page-khuyen-mai__hero-description {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 30px;
    max-width: 600px;
    color: #f0f0f0;
}

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

.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-size: 18px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    cursor: pointer;
    box-sizing: border-box;
    max-width: 100%;
    word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

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

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

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

/* Intro Section (Features) */
.page-khuyen-mai__intro-section {
    background-color: var(--card-bg);
    padding: 60px 0;
}

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

.page-khuyen-mai__feature-item {
    text-align: center;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__icon-box-media {
    width: 180px;
    height: 180px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-color);
    box-shadow: 0 0 0 8px var(--secondary-color);
}

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

.page-khuyen-mai__feature-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.page-khuyen-mai__feature-text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-main);
}

/* Promotion List Section */
.page-khuyen-mai__promo-list-section {
    background-color: var(--background-color);
    padding: 60px 0;
}

.page-khuyen-mai__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__promo-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.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;
}

.page-khuyen-mai__promo-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.3;
}

.page-khuyen-mai__promo-title a {
    color: inherit;
    text-decoration: none;
}

.page-khuyen-mai__promo-title a:hover {
    color: var(--primary-color);
}

.page-khuyen-mai__promo-description {
    font-size: 16px;
    color: var(--text-main);
    line-height: 1.6;
    margin-bottom: 15px;
    flex-grow: 1;
}

.page-khuyen-mai__promo-date {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    display: block;
}

.page-khuyen-mai__btn-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.page-khuyen-mai__btn-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.page-khuyen-mai__view-all-promos {
    text-align: center;
    margin-top: 50px;
}

/* Guide Section */
.page-khuyen-mai__guide-section {
    background-color: var(--card-bg);
    padding: 60px 0;
}

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

.page-khuyen-mai__guide-step-item {
    text-align: center;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    padding-bottom: 30px;
    overflow: hidden;
}

.page-khuyen-mai__guide-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    margin-bottom: 20px;
}

.page-khuyen-mai__guide-step-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    padding: 0 20px;
}

.page-khuyen-mai__guide-step-text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-main);
    padding: 0 20px;
}

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

.page-khuyen-mai__terms-section .page-khuyen-mai__section-title,
.page-khuyen-mai__terms-section .page-khuyen-mai__section-description {
    color: #ffffff;
}

.page-khuyen-mai__terms-list {
    list-style: none;
    padding: 0;
    margin: 40px auto 0;
    max-width: 800px;
}

.page-khuyen-mai__terms-item {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 15px;
    position: relative;
    padding-left: 30px;
}

.page-khuyen-mai__terms-item::before {
    content: '✓';
    color: #ffffff;
    font-weight: bold;
    position: absolute;
    left: 0;
    top: 0;
}

.page-khuyen-mai__terms-cta {
    text-align: center;
    margin-top: 50px;
}

.page-khuyen-mai__terms-cta .page-khuyen-mai__btn-primary {
    background: #ffffff;
    color: var(--primary-color);
    border: 2px solid #ffffff;
}

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

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

.page-khuyen-mai__faq-list {
    max-width: 800px;
    margin: 40px auto 0;
}

.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-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    list-style: none;
    position: relative;
}

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

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

.page-khuyen-mai__faq-toggle {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-left: 15px;
    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;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-main);
}

/* Final CTA Section */
.page-khuyen-mai__cta-section {
    background: var(--button-gradient);
    padding: 80px 0;
    text-align: center;
    color: #ffffff;
}

.page-khuyen-mai__final-cta-content {
    max-width: 900px;
    margin: 0 auto;
}

.page-khuyen-mai__cta-section .page-khuyen-mai__section-title,
.page-khuyen-mai__cta-section .page-khuyen-mai__section-description {
    color: #ffffff;
}

.page-khuyen-mai__cta-section .page-khuyen-mai__btn-primary {
    margin-top: 30px;
    padding: 16px 32px;
    font-size: 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__hero-container {
        flex-direction: column;
        text-align: center;
        padding: 40px 16px;
    }

    .page-khuyen-mai__hero-content {
        text-align: center;
    }

    .page-khuyen-mai__main-title,
    .page-khuyen-mai__hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .page-khuyen-mai__cta-buttons {
        justify-content: center;
    }

    .page-khuyen-mai__icon-box-media {
        width: 150px;
        height: 150px;
    }

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

    .page-khuyen-mai__guide-image {
        height: 180px;
    }
}

@media (max-width: 768px) {
    /* General mobile adaptations */
    .page-khuyen-mai__content-area {
        padding: 20px 15px !important;
    }

    .page-khuyen-mai__section-title {
        font-size: 28px !important;
        margin-bottom: 15px !important;
    }

    .page-khuyen-mai__section-description {
        font-size: 16px !important;
        margin-bottom: 30px !important;
    }

    /* HERO Section */
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px !important;
    }

    .page-khuyen-mai__hero-container {
        padding: 30px 15px !important;
        gap: 20px !important;
    }

    .page-khuyen-mai__main-title {
        font-size: 36px !important;
        margin-bottom: 15px !important;
    }

    .page-khuyen-mai__hero-description {
        font-size: 17px !important;
        margin-bottom: 20px !important;
    }

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

    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        font-size: 16px !important;
        padding: 12px 20px !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-khuyen-mai__hero-side-image {
        max-width: 90% !important;
    }

    /* Intro Section (Features) */
    .page-khuyen-mai__intro-section {
        padding: 40px 0 !important;
    }

    .page-khuyen-mai__features-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
        margin-top: 20px !important;
    }

    .page-khuyen-mai__feature-item {
        padding: 20px !important;
    }

    .page-khuyen-mai__icon-box-media {
        width: 120px !important;
        height: 120px !important;
        border-width: 3px !important;
        box-shadow: 0 0 0 6px var(--secondary-color) !important;
        margin-bottom: 15px !important;
    }

    .page-khuyen-mai__feature-title {
        font-size: 20px !important;
        margin-bottom: 10px !important;
    }

    .page-khuyen-mai__feature-text {
        font-size: 15px !important;
    }

    /* Promotion List Section */
    .page-khuyen-mai__promo-list-section {
        padding: 40px 0 !important;
    }

    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
        margin-top: 20px !important;
    }

    .page-khuyen-mai__promo-image {
        height: 180px !important;
    }

    .page-khuyen-mai__promo-title {
        font-size: 18px !important;
    }

    .page-khuyen-mai__promo-description {
        font-size: 15px !important;
    }

    .page-khuyen-mai__view-all-promos {
        margin-top: 30px !important;
    }

    /* Guide Section */
    .page-khuyen-mai__guide-section {
        padding: 40px 0 !important;
    }

    .page-khuyen-mai__guide-steps {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
        margin-top: 20px !important;
    }

    .page-khuyen-mai__guide-image {
        height: 160px !important;
    }

    .page-khuyen-mai__guide-step-title {
        font-size: 20px !important;
    }

    .page-khuyen-mai__guide-step-text {
        font-size: 15px !important;
    }

    /* Terms Section */
    .page-khuyen-mai__terms-section {
        padding: 40px 0 !important;
    }

    .page-khuyen-mai__terms-list {
        margin-top: 20px !important;
    }

    .page-khuyen-mai__terms-item {
        font-size: 16px !important;
        padding-left: 25px !important;
    }

    /* FAQ Section */
    .page-khuyen-mai__faq-section {
        padding: 40px 0 !important;
    }

    .page-khuyen-mai__faq-list {
        margin-top: 20px !important;
    }

    .page-khuyen-mai__faq-item summary {
        font-size: 17px !important;
        padding: 15px 20px !important;
    }

    .page-khuyen-mai__faq-toggle {
        font-size: 20px !important;
    }

    .page-khuyen-mai__faq-answer {
        font-size: 15px !important;
        padding: 0 20px 15px !important;
    }

    /* Final CTA Section */
    .page-khuyen-mai__cta-section {
        padding: 50px 0 !important;
    }

    .page-khuyen-mai__cta-section .page-khuyen-mai__btn-primary {
        margin-top: 20px !important;
        padding: 14px 25px !important;
        font-size: 18px !important;
    }

    /* Image responsiveness for all images */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }

    /* Exception for circular images to maintain aspect ratio */
    .page-khuyen-mai__icon-box-media img {
        height: 100% !important;
        object-fit: cover !important;
    }

    /* Container responsiveness */
    .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;
    }
}