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

/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại tại đây */

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

.page-promotions__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 0 60px 0; /* body đã có padding-top, chỉ dùng 10px trang trí */
    background-color: var(--color-deep-green);
    overflow: hidden;
}

.page-promotions__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-width: 100%;
    filter: brightness(0.7); /* Làm mờ ảnh để chữ nổi bật, không thay đổi màu */
}

.page-promotions__hero-content {
    position: relative;
    width: 100%;
    max-width: 1200px;
    padding: 20px;
    text-align: center;
    color: var(--color-text-main);
    margin-top: -150px; /* Đẩy nội dung lên trên ảnh một chút */
    z-index: 1;
}

.page-promotions__main-title {
    font-size: clamp(2.5rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--color-gold);
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-promotions__hero-description {
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-secondary);
}

.page-promotions__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-promotions__btn-primary,
.page-promotions__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-promotions__btn-primary {
    background: var(--color-button-gradient);
    color: var(--color-text-main);
    border: 2px solid var(--color-glow);
    box-shadow: 0 0 15px var(--color-glow);
}

.page-promotions__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 25px var(--color-glow);
}

.page-promotions__btn-secondary {
    background-color: transparent;
    color: var(--color-text-main);
    border: 2px solid var(--color-border);
}

.page-promotions__btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-glow);
    transform: translateY(-3px);
}

.page-promotions__section {
    padding: 60px 20px;
    background-color: var(--color-background);
    color: var(--color-text-main);
}

.page-promotions__section-title {
    font-size: 2.2rem;
    color: var(--color-gold);
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
    line-height: 1.3;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.page-promotions__container {
    max-width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
}

.page-promotions__text-block {
    font-size: 1.05rem;
    margin-bottom: 20px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.page-promotions__text-block a {
    color: var(--color-glow);
    text-decoration: none;
    font-weight: bold;
}

.page-promotions__text-block a:hover {
    text-decoration: underline;
}

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

.page-promotions__promotion-card {
    background-color: var(--color-card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--color-border);
}

.page-promotions__promotion-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.page-promotions__card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

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

.page-promotions__card-title {
    font-size: 1.5rem;
    color: var(--color-gold);
    margin-bottom: 15px;
    line-height: 1.3;
    font-weight: 600;
}

.page-promotions__card-description {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
    flex-grow: 1;
}

.page-promotions__card-list {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 20px;
    color: var(--color-text-secondary);
}

.page-promotions__card-list li {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.page-promotions__card-btn {
    margin-top: auto;
    align-self: flex-start;
    padding: 10px 20px;
    font-size: 0.95rem;
}

.page-promotions__claim-steps {
    list-style: none;
    padding: 0;
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.page-promotions__step-item {
    background-color: var(--color-card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

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

.page-promotions__step-title {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-promotions__step-item p {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.page-promotions__terms-list {
    list-style: decimal;
    padding-left: 25px;
    margin-top: 30px;
    color: var(--color-text-secondary);
}

.page-promotions__terms-list li {
    margin-bottom: 15px;
    font-size: 1rem;
    line-height: 1.6;
}

.page-promotions__faq-list {
    margin-top: 30px;
}

.page-promotions__faq-item {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.page-promotions__faq-item[open] {
    background-color: var(--color-deep-green);
    border-color: var(--color-primary);
}

.page-promotions__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-main);
    cursor: pointer;
    user-select: none;
    background-color: var(--color-card-bg);
    transition: background-color 0.3s ease;
}

.page-promotions__faq-item[open] .page-promotions__faq-question {
    background-color: var(--color-deep-green);
    color: var(--color-gold);
}

.page-promotions__faq-question:hover {
    background-color: var(--color-deep-green);
}

.page-promotions__faq-question::-webkit-details-marker {
    display: none;
}

.page-promotions__faq-question::marker {
    display: none;
}

.page-promotions__faq-qtext {
    flex-grow: 1;
}

.page-promotions__faq-toggle {
    font-size: 1.8rem;
    line-height: 1;
    margin-left: 15px;
    color: var(--color-glow);
}

.page-promotions__faq-answer {
    padding: 0 25px 20px;
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.page-promotions__answer p {
    margin-bottom: 10px;
}

.page-promotions__conclusion-section {
    text-align: center;
    background-color: var(--color-deep-green);
    padding-bottom: 80px;
}

.page-promotions__conclusion-section .page-promotions__section-title {
    color: var(--color-gold);
}

/* --- Responsive Design --- */

/* General image, video, container responsiveness for mobile */
.page-promotions img {
    max-width: 100%;
    height: auto;
    display: block;
}

.page-promotions video,
.page-promotions__video {
    max-width: 100%;
    width: 100%;
    height: auto;
    display: block;
}

.page-promotions__video-section,
.page-promotions__video-container,
.page-promotions__video-wrapper,
.page-promotions__section,
.page-promotions__container,
.page-promotions__promotion-card,
.page-promotions__step-item,
.page-promotions__faq-item {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

@media (max-width: 768px) {
    .page-promotions {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-promotions__hero-content {
        margin-top: -100px; /* Điều chỉnh lại cho mobile */
        padding: 15px;
    }

    .page-promotions__main-title {
        font-size: clamp(2rem, 8vw, 2.8rem);
        margin-bottom: 15px;
    }

    .page-promotions__hero-description {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .page-promotions__cta-buttons {
        flex-direction: column;
        gap: 15px;
        padding: 0 15px;
    }

    .page-promotions__btn-primary,
    .page-promotions__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 20px;
        font-size: 1rem;
    }

    .page-promotions__section {
        padding: 40px 15px;
    }

    .page-promotions__section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }

    .page-promotions__promotion-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-promotions__card-image {
        height: 200px;
    }

    .page-promotions__card-title {
        font-size: 1.3rem;
    }

    .page-promotions__card-description,
    .page-promotions__card-list li {
        font-size: 0.9rem;
    }

    .page-promotions__card-btn {
        width: 100% !important;
        max-width: 100% !important;
        text-align: center;
    }

    .page-promotions__claim-steps {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-promotions__step-title {
        font-size: 1.25rem;
    }

    .page-promotions__terms-list,
    .page-promotions__faq-list {
        padding-left: 0;
    }

    .page-promotions__terms-list li,
    .page-promotions__faq-question,
    .page-promotions__faq-answer {
        font-size: 1rem;
    }

    .page-promotions__faq-question {
        padding: 18px 20px;
    }

    .page-promotions__faq-toggle {
        font-size: 1.5rem;
    }

    .page-promotions__faq-answer {
        padding: 0 20px 18px;
    }

    /* Mobile specific image, video, button, and container overrides */
    .page-promotions img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-promotions video,
    .page-promotions__video {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-promotions__video-section,
    .page-promotions__video-container,
    .page-promotions__video-wrapper,
    .page-promotions__section,
    .page-promotions__container,
    .page-promotions__promotion-card,
    .page-promotions__step-item,
    .page-promotions__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }
    .page-promotions__hero-section {
        padding-left: 0;
        padding-right: 0;
    }

    .page-promotions__video-section {
        padding-top: 10px !important; /* body đã承担 --header-offset，此处禁止 var(--header-offset) */
    }

    .page-promotions__cta-buttons {
        flex-wrap: wrap !important;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .page-promotions__main-title {
        font-size: clamp(1.8rem, 10vw, 2.5rem);
    }
    .page-promotions__hero-description {
        font-size: 0.95rem;
    }
    .page-promotions__section-title {
        font-size: 1.6rem;
    }
    .page-promotions__card-title {
        font-size: 1.2rem;
    }
    .page-promotions__faq-question {
        font-size: 1rem;
    }
}