/* style/khuyen-mai.css */

/* Variables from custom color scheme */
:root {
    --primary-color: #113B7A;
    --secondary-color: #1D5FD1;
    --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
    --card-bg: #10233F;
    --text-main: #F3F8FF;
    --text-secondary: #AFC4E8;
    --border-color: #244D84;
    --glow-color: #4FA8FF;
    --gold-color: #F2C14E;
    --divider-color: #1B3357;
    --deep-navy: #08162B; /* Body background color */
}

.page-khuyen-mai {
    color: var(--text-main); /* Light text for dark body background */
    background-color: var(--deep-navy); /* Ensure consistency, though body handles this */
    font-family: Arial, sans-serif;
}

.page-khuyen-mai__container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 20px 16px;
    box-sizing: border-box;
}

/* Banner Section */
.page-khuyen-mai__banner-section {
    padding-top: 10px; /* Small top padding, body handles header offset */
    padding-bottom: 40px;
    background-color: var(--deep-navy);
}

.page-khuyen-mai__banner-container {
    max-width: 1170px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__banner-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* Hero Content Section */
.page-khuyen-mai__hero-content-section {
    padding: 40px 0;
    background-color: var(--deep-navy);
    text-align: center;
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem); /* H1 font size with clamp */
    font-weight: 700;
    line-height: 1.2;
    color: var(--gold-color);
    margin-bottom: 20px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
}

.page-khuyen-mai__intro-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 30px;
}

.page-khuyen-mai__cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap; /* Allow wrapping for multiple buttons */
}

/* Buttons */
.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary,
.page-khuyen-mai__btn-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

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

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

.page-khuyen-mai__btn-secondary {
    background: var(--card-bg);
    color: var(--gold-color);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

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

.page-khuyen-mai__btn-link {
    background: none;
    color: var(--gold-color);
    border: 2px solid transparent;
    padding: 12px 20px;
}

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

/* General Section Styling */
.page-khuyen-mai__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 700;
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 0 0 6px rgba(255, 255, 255, 0.1);
}

.page-khuyen-mai__section-description {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

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

.page-khuyen-mai__icon-box-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    text-align: center;
}

.page-khuyen-mai__icon-box {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.page-khuyen-mai__icon-box:hover {
    transform: translateY(-5px);
}

.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(--gold-color);
    box-shadow: 0 0 15px var(--glow-color);
}

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

.page-khuyen-mai__icon-box-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gold-color);
    margin-bottom: 10px;
}

.page-khuyen-mai__icon-box-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Promotions List Section */
.page-khuyen-mai__promotions-list-section {
    padding: 60px 0;
    background-color: var(--deep-navy);
}

.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(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
}

.page-khuyen-mai__promo-image {
    width: 100%;
    height: 220px; /* Fixed height for consistency */
    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: 1.4rem;
    font-weight: 600;
    color: var(--gold-color);
    margin-bottom: 15px;
}

.page-khuyen-mai__promo-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__promo-actions {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-top: auto; /* Push buttons to the bottom */
    flex-wrap: wrap; /* Allow wrapping for multiple buttons */
}

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

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

.page-khuyen-mai__benefit-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

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

.page-khuyen-mai__benefit-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--gold-color);
    margin-bottom: 10px;
}

.page-khuyen-mai__benefit-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.page-khuyen-mai__cta-section {
    padding: 60px 0;
    background-color: var(--primary-color); /* Use primary color for a distinct CTA */
    text-align: center;
    box-shadow: inset 0 0 30px rgba(0,0,0,0.5);
}

.page-khuyen-mai__cta-section .page-khuyen-mai__section-title {
    color: var(--text-main);
    text-shadow: none;
}

.page-khuyen-mai__cta-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 40px;
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Allow wrapping for multiple buttons */
}

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

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

.page-khuyen-mai__faq-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--gold-color);
    cursor: pointer;
    background-color: var(--card-bg);
    list-style: none; /* Remove default marker */
    position: relative;
    user-select: none;
}

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

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

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
    transform: rotate(45deg); /* Rotate plus to form an X or minus */
}

.page-khuyen-mai__faq-answer {
    padding: 0 25px 20px;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-answer {
    max-height: 500px; /* Sufficiently large for content */
    padding-top: 10px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-khuyen-mai__main-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }
    .page-khuyen-mai__section-title {
        font-size: clamp(1.6rem, 4.5vw, 2.5rem);
    }
    .page-khuyen-mai__icon-box-media {
        width: 200px;
        height: 200px;
    }
    .page-khuyen-mai__promo-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    /* Fixed Header Spacing */
    .page-khuyen-mai__banner-section {
        padding-top: 10px !important; /* Small top padding, body handles header offset */
    }

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

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

    /* Specific Image (Circular) for Intro Section */
    .page-khuyen-mai__icon-box-media {
        width: 180px;
        height: 180px;
        border-width: 2px;
    }
    .page-khuyen-mai__icon-box-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    /* Buttons */
    .page-khuyen-mai__cta-group,
    .page-khuyen-mai__promo-actions,
    .page-khuyen-mai__cta-buttons {
        flex-direction: column !important;
        gap: 15px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 15px; /* Add padding to container */
    }
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary,
    .page-khuyen-mai__btn-link {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px; /* Ensure internal padding */
        padding-right: 15px;
    }

    /* Hero Content */
    .page-khuyen-mai__hero-content-section {
        padding: 30px 0;
    }
    .page-khuyen-mai__main-title {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
        margin-bottom: 15px;
    }
    .page-khuyen-mai__intro-text {
        font-size: 1rem;
        margin-bottom: 20px;
    }

    /* Intro Section Grid */
    .page-khuyen-mai__intro-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__icon-box-grid {
        grid-template-columns: 1fr;
    }
    .page-khuyen-mai__icon-box {
        padding: 25px;
    }
    .page-khuyen-mai__icon-box-title {
        font-size: 1.3rem;
    }

    /* Promotions List Section Grid */
    .page-khuyen-mai__promotions-list-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr;
    }
    .page-khuyen-mai__promo-image {
        height: 180px; /* Adjust height for mobile */
    }
    .page-khuyen-mai__promo-content {
        padding: 20px;
    }
    .page-khuyen-mai__promo-title {
        font-size: 1.2rem;
    }
    .page-khuyen-mai__promo-text {
        font-size: 0.9rem;
    }

    /* Why Choose Section */
    .page-khuyen-mai__why-choose-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__benefits-grid {
        grid-template-columns: 1fr;
    }
    .page-khuyen-mai__benefit-item {
        padding: 25px;
    }
    .page-khuyen-mai__benefit-title {
        font-size: 1.3rem;
    }

    /* CTA Section */
    .page-khuyen-mai__cta-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__cta-text {
        font-size: 1rem;
        margin-bottom: 30px;
    }

    /* FAQ Section */
    .page-khuyen-mai__faq-section {
        padding: 40px 0;
    }
    .page-khuyen-mai__faq-question {
        font-size: 1rem;
        padding: 15px 20px;
    }
    .page-khuyen-mai__faq-answer {
        font-size: 0.95rem;
        padding: 0 20px 15px;
    }
    .page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-answer {
        padding-top: 8px;
    }
}