/* style/ung-dung-di-dong.css */

:root {
    --primary-color: #C91F17;
    --secondary-color: #E53935;
    --button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
    --card-bg-color: #D32F2F;
    --section-bg-color: #B71C1C;
    --text-main-color: #FFF5E1;
    --border-color: #F2B544;
    --glow-color: #FFCC66;
    --gold-color: #F4D34D;
    --deep-red-color: #7A0E0E;
}

.page-ung-dung-di-dong {
    color: var(--text-main-color); /* Default text color for dark background */
    background-color: var(--section-bg-color); /* Overall page background */
}

.page-ung-dung-di-dong__container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 40px 16px;
    box-sizing: border-box;
}

/* Hero Section */
.page-ung-dung-di-dong__hero-section {
    padding-top: 10px; /* Aligns with shared header offset */
    padding-bottom: 60px;
    background-color: var(--deep-red-color);
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__hero-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 16px;
}

.page-ung-dung-di-dong__hero-content {
    flex: 1 1 500px;
    max-width: 600px;
    text-align: left;
}

.page-ung-dung-di-dong__main-title {
    font-size: clamp(2.5rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--gold-color);
    max-width: 550px;
}

.page-ung-dung-di-dong__hero-description {
    font-size: 1.15rem;
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__cta-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.page-ung-dung-di-dong__btn-primary,
.page-ung-dung-di-dong__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    max-width: 100%;
}

.page-ung-dung-di-dong__btn-primary {
    background: var(--button-gradient);
    color: #1a1a1a;
    border: 2px solid var(--gold-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

.page-ung-dung-di-dong__btn-secondary {
    background: var(--primary-color);
    color: var(--text-main-color);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-ung-dung-di-dong__btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.page-ung-dung-di-dong__hero-image {
    flex: 1 1 450px;
    text-align: center;
}

.page-ung-dung-di-dong__hero-side-image {
    max-width: 600px;
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* Intro Section (Module 1) */
.page-ung-dung-di-dong__intro-section {
    background-color: var(--section-bg-color);
    padding: 80px 0;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__section-title {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--gold-color);
}

.page-ung-dung-di-dong__section-description {
    font-size: 1.1rem;
    line-height: 1.6;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__icon-boxes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.page-ung-dung-di-dong__icon-box {
    flex: 0 0 calc(33% - 20px);
    max-width: 350px;
    background-color: var(--card-bg-color);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.page-ung-dung-di-dong__icon-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-ung-dung-di-dong__icon-box-media {
    width: 200px;
    height: 200px;
    margin: 0 auto 25px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--gold-color);
    box-shadow: 0 0 15px rgba(255, 204, 102, 0.6);
}

.page-ung-dung-di-dong__icon-box-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-ung-dung-di-dong__icon-box-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--gold-color);
}

.page-ung-dung-di-dong__icon-box-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-main-color);
}

/* Guide Section */
.page-ung-dung-di-dong__guide-section {
    background-color: var(--deep-red-color);
    padding: 80px 0;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__guide-steps {
    margin-top: 50px;
}

.page-ung-dung-di-dong__guide-item {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 60px;
}

.page-ung-dung-di-dong__guide-item:last-child {
    margin-bottom: 0;
}

.page-ung-dung-di-dong__guide-item--reverse {
    flex-direction: row-reverse;
}

.page-ung-dung-di-dong__guide-text-content {
    flex: 1 1 50%;
}

.page-ung-dung-di-dong__step-number {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gold-color);
    display: block;
    margin-bottom: 10px;
}

.page-ung-dung-di-dong__step-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--gold-color);
}

.page-ung-dung-di-dong__step-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__guide-media {
    flex: 1 1 50%;
    text-align: center;
}

.page-ung-dung-di-dong__guide-media img {
    max-width: 800px;
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    min-width: 200px; /* Enforce min size */
    min-height: 200px; /* Enforce min size */
}

.page-ung-dung-di-dong__cta-buttons--center {
    justify-content: center;
    margin-top: 50px;
}

/* Benefits Section */
.page-ung-dung-di-dong__benefits-section {
    background-color: var(--section-bg-color);
    padding: 80px 0;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__benefits-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-top: 50px;
    align-items: center;
}

.page-ung-dung-di-dong__benefits-content {
    flex: 1 1 500px;
}

.page-ung-dung-di-dong__benefits-list {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
}

.page-ung-dung-di-dong__benefits-list li {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__benefits-list li::before {
    content: '✅';
    position: absolute;
    left: 0;
    top: 0;
    font-size: 1.2rem;
}

.page-ung-dung-di-dong__list-highlight {
    color: var(--gold-color);
}

.page-ung-dung-di-dong__benefits-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__benefits-media {
    flex: 1 1 450px;
    text-align: center;
}

.page-ung-dung-di-dong__benefits-media img {
    max-width: 600px;
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    min-width: 200px; /* Enforce min size */
    min-height: 200px; /* Enforce min size */
}

/* FAQ Section */
.page-ung-dung-di-dong__faq-section {
    background-color: var(--deep-red-color);
    padding: 80px 0;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__faq-list {
    margin-top: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-ung-dung-di-dong__faq-item {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-ung-dung-di-dong__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gold-color);
    cursor: pointer;
    list-style: none; /* For details/summary */
}

.page-ung-dung-di-dong__faq-question::-webkit-details-marker {
    display: none;
}

.page-ung-dung-di-dong__faq-qtext {
    flex-grow: 1;
}

.page-ung-dung-di-dong__faq-toggle {
    font-size: 1.8rem;
    margin-left: 15px;
    color: var(--text-main-color);
    transition: transform 0.3s ease;
}

.page-ung-dung-di-dong__faq-item[open] .page-ung-dung-di-dong__faq-toggle {
    transform: rotate(45deg);
}

.page-ung-dung-di-dong__faq-answer {
    padding: 0 25px 20px;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-main-color);
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.4s ease-out;
}

.page-ung-dung-di-dong__faq-item[open] .page-ung-dung-di-dong__faq-answer {
    max-height: 500px; /* Sufficiently large for content */
}

/* Final CTA Section */
.page-ung-dung-di-dong__cta-final-section {
    background-color: var(--primary-color);
    padding: 80px 0;
    text-align: center;
    color: var(--text-main-color);
}

.page-ung-dung-di-dong__cta-final-content {
    max-width: 900px;
    margin: 0 auto;
}

.page-ung-dung-di-dong__cta-final-section .page-ung-dung-di-dong__section-title {
    margin-bottom: 25px;
}

.page-ung-dung-di-dong__cta-final-section .page-ung-dung-di-dong__section-description {
    margin-bottom: 40px;
}

/* General image responsiveness */
.page-ung-dung-di-dong img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

    .page-ung-dung-di-dong__hero-content {
        text-align: center;
        max-width: 100%;
    }

    .page-ung-dung-di-dong__cta-buttons {
        justify-content: center;
    }

    .page-ung-dung-di-dong__guide-item,
    .page-ung-dung-di-dong__guide-item--reverse {
        flex-direction: column;
        gap: 30px;
    }

    .page-ung-dung-di-dong__benefits-grid {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    /* Hero Section */
    .page-ung-dung-di-dong__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px;
    }

    .page-ung-dung-di-dong__hero-container {
        padding: 30px 15px;
        gap: 30px;
    }

    .page-ung-dung-di-dong__main-title {
        font-size: clamp(2rem, 8vw, 2.5rem);
        max-width: 100%;
    }

    .page-ung-dung-di-dong__hero-description {
        font-size: 1rem;
    }

    .page-ung-dung-di-dong__cta-buttons {
        flex-direction: column;
        gap: 10px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-ung-dung-di-dong__btn-primary,
    .page-ung-dung-di-dong__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        font-size: 1rem !important;
        padding: 12px 20px !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-ung-dung-di-dong__hero-side-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    /* Module 1 - Intro Section */
    .page-ung-dung-di-dong__intro-section {
        padding: 50px 0;
    }

    .page-ung-dung-di-dong__section-title {
        font-size: clamp(1.8rem, 7vw, 2.2rem);
    }

    .page-ung-dung-di-dong__section-description {
        font-size: 0.95rem;
        margin-bottom: 30px;
    }

    .page-ung-dung-di-dong__icon-boxes {
        flex-direction: column;
        gap: 20px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-ung-dung-di-dong__icon-box {
        flex: 0 0 100%;
        max-width: 100%;
        padding: 25px;
    }

    .page-ung-dung-di-dong__icon-box-media {
        width: 160px; /* Maintain circular aspect ratio */
        height: 160px;
        margin-bottom: 20px;
    }

    /* Guide Section */
    .page-ung-dung-di-dong__guide-section {
        padding: 50px 0;
    }

    .page-ung-dung-di-dong__guide-steps {
        margin-top: 30px;
    }

    .page-ung-dung-di-dong__guide-item,
    .page-ung-dung-di-dong__guide-item--reverse {
        flex-direction: column;
        gap: 25px;
        margin-bottom: 40px;
    }

    .page-ung-dung-di-dong__step-title {
        font-size: 1.5rem;
    }

    .page-ung-dung-di-dong__step-description {
        font-size: 1rem;
    }

    .page-ung-dung-di-dong__guide-media img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-ung-dung-di-dong__cta-buttons--center {
        padding-left: 15px;
        padding-right: 15px;
    }

    /* Benefits Section */
    .page-ung-dung-di-dong__benefits-section {
        padding: 50px 0;
    }

    .page-ung-dung-di-dong__benefits-grid {
        flex-direction: column;
        gap: 30px;
        margin-top: 30px;
    }

    .page-ung-dung-di-dong__benefits-content,
    .page-ung-dung-di-dong__benefits-media {
        flex: 1 1 100%;
        max-width: 100%;
    }

    .page-ung-dung-di-dong__benefits-list li {
        font-size: 1rem;
        padding-left: 25px;
    }

    .page-ung-dung-di-dong__benefits-list li::before {
        font-size: 1rem;
    }

    .page-ung-dung-di-dong__benefits-media img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    /* FAQ Section */
    .page-ung-dung-di-dong__faq-section {
        padding: 50px 0;
    }

    .page-ung-dung-di-dong__faq-list {
        margin-top: 30px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-ung-dung-di-dong__faq-question {
        font-size: 1.1rem;
        padding: 15px 20px;
    }

    .page-ung-dung-di-dong__faq-toggle {
        font-size: 1.5rem;
    }

    .page-ung-dung-di-dong__faq-answer {
        font-size: 0.95rem;
        padding: 0 20px 15px;
    }

    /* Final CTA Section */
    .page-ung-dung-di-dong__cta-final-section {
        padding: 50px 0;
    }

    .page-ung-dung-di-dong__cta-final-content {
        padding-left: 15px;
        padding-right: 15px;
    }

    /* General image and container responsiveness */
    .page-ung-dung-di-dong img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-ung-dung-di-dong__section,
    .page-ung-dung-di-dong__card,
    .page-ung-dung-di-dong__container,
    .page-ung-dung-di-dong__cta-buttons,
    .page-ung-dung-di-dong__button-group,
    .page-ung-dung-di-dong__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
}