/* style/promotions.css */

/* Biến CSS */
:root {
    --page-promotions-primary-color: #0A2463;
    --page-promotions-secondary-color: #FFD700;
    --page-promotions-text-light: #F0F2F5;
    --page-promotions-text-dark: #333;
    --page-promotions-bg-dark: #1A1A2E;
    --page-promotions-bg-light: #FFFFFF;
    --page-promotions-border-color: #e0e0e0;
}

.page-promotions {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-promotions-text-dark);
    background-color: var(--page-promotions-bg-light);
}

.page-promotions__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-promotions__section-title {
    font-size: 2.5em;
    color: var(--page-promotions-primary-color);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.page-promotions__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--page-promotions-secondary-color);
    border-radius: 2px;
}

.page-promotions__text {
    font-size: 1.1em;
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 30px auto;
    color: var(--page-promotions-text-dark);
}

.page-promotions .highlight {
    color: var(--page-promotions-primary-color);
    font-weight: bold;
}

.page-promotions .keyword {
    color: var(--page-promotions-secondary-color);
    font-weight: bold;
}

/* Hero Section */
.page-promotions__hero {
    background: linear-gradient(135deg, var(--page-promotions-primary-color) 0%, #1a3a7a 100%);
    color: var(--page-promotions-text-light);
    padding: 80px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 500px;
}

.page-promotions__hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top left, rgba(255, 215, 0, 0.1) 0%, transparent 50%);
    z-index: 1;
}

.page-promotions__hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 20px;
}

.page-promotions__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--page-promotions-text-light);
}

.page-promotions__hero-title .highlight {
    color: var(--page-promotions-secondary-color);
}

.page-promotions__hero-description {
    font-size: 1.3em;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
}

.page-promotions__btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    font-size: 1.1em;
    text-align: center;
}

.page-promotions__btn--primary {
    background-color: var(--page-promotions-secondary-color);
    color: var(--page-promotions-primary-color);
    border: 2px solid var(--page-promotions-secondary-color);
}

.page-promotions__btn--primary:hover {
    background-color: transparent;
    color: var(--page-promotions-secondary-color);
}

.page-promotions__hero-image-wrapper {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40%;
    max-width: 600px;
    z-index: 1;
    opacity: 0.2;
}

.page-promotions__hero-image {
    width: 100%;
    height: auto;
    display: block;
}

/* Intro Section */
.page-promotions__intro {
    padding: 80px 0;
    background-color: var(--page-promotions-bg-light);
}

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

.page-promotions__intro-item {
    background-color: var(--page-promotions-bg-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 5px solid var(--page-promotions-secondary-color);
}

.page-promotions__intro-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.page-promotions__intro-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.2));
}

.page-promotions__intro-item h3 {
    font-size: 1.6em;
    color: var(--page-promotions-primary-color);
    margin-bottom: 15px;
}

.page-promotions__intro-item p {
    font-size: 1em;
    color: var(--page-promotions-text-dark);
}

/* Detail Promotions Section */
.page-promotions__detail-promotions {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.page-promotions__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.page-promotions__promo-card {
    background-color: var(--page-promotions-bg-light);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-promotions__promo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.page-promotions__promo-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-bottom: 1px solid var(--page-promotions-border-color);
}

.page-promotions__promo-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.page-promotions__promo-content h3 {
    font-size: 1.8em;
    color: var(--page-promotions-primary-color);
    margin-bottom: 15px;
    min-height: 60px; /* Ensure consistent height for titles */
}

.page-promotions__promo-content p {
    font-size: 1em;
    color: var(--page-promotions-text-dark);
    line-height: 1.7;
    margin-bottom: 25px;
    flex-grow: 1;
}

.page-promotions__btn--secondary {
    background-color: var(--page-promotions-primary-color);
    color: var(--page-promotions-text-light);
    border: 2px solid var(--page-promotions-primary-color);
    align-self: flex-start;
    padding: 12px 25px;
    font-size: 1em;
}

.page-promotions__btn--secondary:hover {
    background-color: transparent;
    color: var(--page-promotions-primary-color);
    border-color: var(--page-promotions-primary-color);
}

/* Why Join Section */
.page-promotions__why-join {
    background-color: var(--page-promotions-primary-color);
    color: var(--page-promotions-text-light);
    padding: 80px 0;
    text-align: center;
}

.page-promotions__why-join .page-promotions__section-title {
    color: var(--page-promotions-secondary-color);
}

.page-promotions__why-join .page-promotions__section-title::after {
    background-color: var(--page-promotions-text-light);
}

.page-promotions__why-join .page-promotions__text {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.page-promotions__btn--cta {
    background-color: var(--page-promotions-secondary-color);
    color: var(--page-promotions-primary-color);
    border: 2px solid var(--page-promotions-secondary-color);
    margin-top: 40px;
}

.page-promotions__btn--cta:hover {
    background-color: transparent;
    color: var(--page-promotions-secondary-color);
}

/* FAQ Section */
.page-promotions__faq {
    padding: 80px 0;
    background-color: var(--page-promotions-bg-light);
}

.page-promotions__faq-list {
    max-width: 900px;
    margin: 50px auto 0 auto;
}

.page-promotions__faq-item {
    border: 1px solid var(--page-promotions-border-color);
    border-radius: 8px;
    margin-bottom: 20px;
    overflow: hidden;
}

.page-promotions__faq-question {
    background-color: #f0f0f0;
    padding: 20px 25px;
    font-size: 1.2em;
    color: var(--page-promotions-primary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.page-promotions__faq-question::after {
    content: '+';
    font-size: 1.5em;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.page-promotions__faq-question.active {
    background-color: #e0e0e0;
}

.page-promotions__faq-question.active::after {
    transform: rotate(45deg);
}

.page-promotions__faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out, padding 0.5s ease-out;
    background-color: var(--page-promotions-bg-light);
}

.page-promotions__faq-answer p {
    padding-top: 15px;
    padding-bottom: 15px;
    font-size: 1em;
    color: var(--page-promotions-text-dark);
    line-height: 1.7;
    text-align: left;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-promotions__hero {
        flex-direction: column-reverse;
        text-align: center;
        padding: 60px 0;
    }

    .page-promotions__hero-content {
        max-width: 100%;
    }

    .page-promotions__hero-image-wrapper {
        position: static;
        width: 80%;
        max-width: 400px;
        margin-bottom: 30px;
        opacity: 0.5;
    }

    .page-promotions__hero-title {
        font-size: 2.8em;
    }

    .page-promotions__hero-description {
        font-size: 1.1em;
    }

    .page-promotions__section-title {
        font-size: 2em;
    }

    .page-promotions__promo-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .page-promotions__intro-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-promotions__hero {
        padding: 40px 0;
    }

    .page-promotions__hero-title {
        font-size: 2.2em;
    }

    .page-promotions__hero-description {
        font-size: 1em;
    }

    .page-promotions__btn {
        padding: 12px 25px;
        font-size: 1em;
    }

    .page-promotions__section-title {
        font-size: 1.8em;
    }

    .page-promotions__text {
        font-size: 0.95em;
    }

    .page-promotions__promo-content h3 {
        font-size: 1.5em;
        min-height: unset;
    }

    .page-promotions__promo-content p {
        font-size: 0.95em;
    }

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

    .page-promotions__faq-answer p {
        font-size: 0.95em;
    }
}

@media (max-width: 480px) {
    .page-promotions__hero-title {
        font-size: 1.8em;
    }

    .page-promotions__hero-description {
        font-size: 0.9em;
    }

    .page-promotions__section-title {
        font-size: 1.6em;
    }

    .page-promotions__promo-grid {
        grid-template-columns: 1fr;
    }

    .page-promotions__faq-question {
        font-size: 1em;
    }
}