/* style/khuyen-mai.css */
:root {
    --primary-color: #FF8C1A;
    --secondary-color: #FFA53A;
    --card-bg: #17191F;
    --site-bg: #0D0E12;
    --text-main: #FFF3E6;
    --border-color: #A84F0C;
    --glow-color: #FFB04D;
    --deep-orange: #D96800;
    --button-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
}

.page-khuyen-mai {
    background-color: var(--site-bg);
    color: var(--text-main);
    font-family: Arial, sans-serif;
    line-height: 1.6;
    padding-bottom: 40px;
}

.page-khuyen-mai a {
    color: var(--secondary-color);
    text-decoration: none;
}

.page-khuyen-mai a:hover {
    text-decoration: underline;
}

.page-khuyen-mai__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Adjusted for shared body padding-top */
    padding-bottom: 60px;
    text-align: center;
    background: var(--site-bg);
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: bold;
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.page-khuyen-mai__description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 30px auto;
    color: var(--text-main);
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-khuyen-mai__btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-align: center;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    max-width: 300px; /* Limit button width for larger screens */
}

.page-khuyen-mai__btn--primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 15px rgba(255, 140, 26, 0.4);
}

.page-khuyen-mai__btn--primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 140, 26, 0.6);
}

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

.page-khuyen-mai__btn--secondary:hover {
    background: rgba(255, 165, 58, 0.1);
    color: #ffffff;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn--small {
    padding: 10px 20px;
    font-size: 0.95rem;
    max-width: 200px;
}

.page-khuyen-mai__btn--large {
    padding: 16px 40px;
    font-size: 1.2rem;
    max-width: 350px;
}

.page-khuyen-mai__section {
    padding: 60px 0;
}

.page-khuyen-mai__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--text-main);
    text-align: center;
    margin-bottom: 40px;
    font-weight: bold;
    line-height: 1.3;
}

.page-khuyen-mai__text-block {
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto 30px auto;
    color: var(--text-main);
}

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

.page-khuyen-mai__promo-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    padding-bottom: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px var(--glow-color);
}

.page-khuyen-mai__promo-card-img {
    width: 100%;
    height: 200px; /* Fixed height for consistency */
    object-fit: cover;
    margin-bottom: 20px;
}

.page-khuyen-mai__promo-card-title {
    font-size: 1.4rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    padding: 0 15px;
    line-height: 1.3;
}

.page-khuyen-mai__promo-card-text {
    font-size: 0.95rem;
    color: var(--text-main);
    padding: 0 20px;
    margin-bottom: 25px;
    flex-grow: 1;
}

.page-khuyen-mai__how-to-claim {
    background-color: #1a1e26; /* Slightly different dark background */
}

.page-khuyen-mai__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

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

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

.page-khuyen-mai__step-icon {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    background: rgba(255, 140, 26, 0.1);
    border-radius: 50%;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px auto;
    border: 2px solid var(--primary-color);
}

.page-khuyen-mai__step-title {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.page-khuyen-mai__step-description {
    font-size: 0.95rem;
    color: var(--text-main);
}

.page-khuyen-mai__center-cta {
    text-align: center;
    margin-top: 40px;
}

.page-khuyen-mai__terms-conditions ul {
    list-style: none;
    padding: 0;
    max-width: 900px;
    margin: 30px auto;
}

.page-khuyen-mai__terms-conditions li {
    background-color: var(--card-bg);
    border-left: 5px solid var(--primary-color);
    padding: 15px 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-main);
    line-height: 1.6;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__terms-conditions li strong {
    color: var(--secondary-color);
}

.page-khuyen-mai__why-choose {
    background-color: #1a1e26;
}

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

.page-khuyen-mai__feature-item {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__feature-icon {
    width: 100%;
    max-width: 120px;
    height: auto;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 8px rgba(255, 165, 58, 0.5));
}

.page-khuyen-mai__feature-title {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.page-khuyen-mai__feature-description {
    font-size: 0.95rem;
    color: var(--text-main);
}

.page-khuyen-mai__faq-list {
    max-width: 900px;
    margin: 40px auto 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 {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--secondary-color);
    padding: 18px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.page-khuyen-mai__faq-question:hover {
    background-color: rgba(255, 165, 58, 0.05);
}

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

.page-khuyen-mai__conclusion {
    padding-bottom: 80px;
    text-align: center;
}

/* General image styling */
.page-khuyen-mai img {
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: cover; /* Ensure images fill their space nicely */
}

/* Media Queries for Responsive Design */
@media (max-width: 1024px) {
    .page-khuyen-mai__main-title {
        font-size: clamp(2rem, 4.5vw, 3rem);
    }

    .page-khuyen-mai__section-title {
        font-size: clamp(1.6rem, 3.8vw, 2.5rem);
    }

    .page-khuyen-mai__promo-grid,
    .page-khuyen-mai__steps-grid,
    .page-khuyen-mai__features-grid {
        gap: 25px;
    }
}

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

    .page-khuyen-mai__container {
        padding: 0 15px;
    }

    /* 1. 顶区标题 + 双 CTA */
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px;
    }

    .page-khuyen-mai__main-title {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
        margin-bottom: 15px;
    }

    .page-khuyen-mai__description {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .page-khuyen-mai__cta-buttons {
        flex-direction: column;
        gap: 10px;
    }

    /* 4. 按钮与按钮容器 */
    .page-khuyen-mai__btn,
    .page-khuyen-mai__btn--primary,
    .page-khuyen-mai__btn--secondary,
    .page-khuyen-mai a[class*="button"],
    .page-khuyen-mai a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-khuyen-mai__cta-buttons,
    .page-khuyen-mai__button-group,
    .page-khuyen-mai__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important;
        gap: 10px;
    }
    
    .page-khuyen-mai__center-cta .page-khuyen-mai__btn--large {
        width: 100% !important;
        max-width: 100% !important;
    }

    .page-khuyen-mai__section {
        padding: 40px 0;
    }

    .page-khuyen-mai__section-title {
        font-size: clamp(1.5rem, 6vw, 2.2rem);
        margin-bottom: 30px;
    }

    /* 2. 单栏长文容器 */
    .page-khuyen-mai__text-block {
        font-size: 0.95rem;
        margin-bottom: 20px;
        padding: 0 5px;
    }

    .page-khuyen-mai__promo-grid,
    .page-khuyen-mai__steps-grid,
    .page-khuyen-mai__features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }

    .page-khuyen-mai__promo-card-img {
        
    }

    .page-khuyen-mai__promo-card-title {
        font-size: 1.25rem;
    }

    .page-khuyen-mai__promo-card-text {
        font-size: 0.9rem;
    }

    .page-khuyen-mai__step-item {
        padding: 25px;
    }

    .page-khuyen-mai__step-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__step-title {
        font-size: 1.2rem;
    }

    .page-khuyen-mai__terms-conditions li {
        font-size: 0.95rem;
        padding: 12px 18px;
        margin-bottom: 10px;
    }

    .page-khuyen-mai__feature-item {
        padding: 25px;
    }

    .page-khuyen-mai__feature-icon {
        max-width: 100px;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__feature-title {
        font-size: 1.2rem;
    }

    .page-khuyen-mai__faq-question {
        font-size: 1rem;
        padding: 15px 20px;
    }

    .page-khuyen-mai__faq-answer {
        font-size: 0.95rem;
        padding: 0 20px 15px 20px;
    }

    /* 3. 通用图片与 figure */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    
    .page-khuyen-mai__promo-card,
    .page-khuyen-mai__step-item,
    .page-khuyen-mai__feature-item,
    .page-khuyen-mai__faq-item,
    .page-khuyen-mai__section,
    .page-khuyen-mai__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    /* 5. 注册教程与 FAQ 区块 - FAQ已处理，此处确保注册教程的标题和图片在移动端清晰 */
    .page-khuyen-mai__step-title {
        font-size: 1.2rem;
    }
    .page-khuyen-mai__step-description {
        font-size: 0.9rem;
    }
}