/* style/khuyen-mai.css */

:root {
    --primary-color: #C61F1F;
    --secondary-color: #E53030;
    --card-bg-color: #2A1212;
    --background-color: #140C0C;
    --text-main-color: #FFF1E8;
    --border-color: #6A1E1E;
    --gold-color: #F3C54D;
    --deep-red-color: #7E0D0D;
    --button-gradient: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%);
}

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

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

.page-khuyen-mai__top-section {
    padding-top: 10px; /* Small top padding, body handles header offset */
    padding-bottom: 40px;
    background-color: var(--deep-red-color);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-khuyen-mai__main-title {
    font-size: clamp(2.2em, 4vw, 3.2em);
    color: var(--gold-color);
    margin-bottom: 15px;
    font-weight: bold;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

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

.page-khuyen-mai__description a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__description a:hover {
    color: #fff;
}

.page-khuyen-mai__highlight {
    color: var(--gold-color);
    font-weight: bold;
}

.page-khuyen-mai__top-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-khuyen-mai__btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word; /* Allow text wrapping */
    max-width: 100%;
    box-sizing: border-box;
}

.page-khuyen-mai__btn--primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__btn--primary:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.page-khuyen-mai__btn--secondary {
    background-color: var(--primary-color);
    color: #ffffff;
    border: 2px solid var(--gold-color);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__btn--secondary:hover {
    transform: translateY(-2px);
    background-color: var(--secondary-color);
}

.page-khuyen-mai__btn--small {
    padding: 8px 15px;
    font-size: 0.9em;
    border-radius: 5px;
}

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

.page-khuyen-mai__section-title {
    font-size: 2.5em;
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-khuyen-mai__section-description {
    font-size: 1.1em;
    color: var(--text-main-color);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px auto;
}

.page-khuyen-mai__section-description a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__section-description a:hover {
    color: #fff;
}

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

.page-khuyen-mai__card {
    background-color: var(--card-bg-color);
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--border-color);
}

.page-khuyen-mai__card-figure {
    margin-bottom: 20px;
    width: 100%;
    max-width: 680px; /* Ensure images don't stretch too wide */
    overflow: hidden;
    border-radius: 8px;
}

.page-khuyen-mai__card-figure img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    object-fit: cover;
    width: 100%;
    min-width: 200px; /* Minimum size requirement */
    min-height: 200px; /* Minimum size requirement */
}

.page-khuyen-mai__card-title {
    font-size: 1.6em;
    color: var(--gold-color);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-khuyen-mai__card-text {
    font-size: 1em;
    color: var(--text-main-color);
    flex-grow: 1;
}

.page-khuyen-mai__card-text a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__card-text a:hover {
    color: #fff;
}

.page-khuyen-mai__how-to-claim {
    background-color: var(--primary-color);
    padding-bottom: 80px;
}

.page-khuyen-mai__how-to-claim .page-khuyen-mai__section-title {
    color: #ffffff;
}

.page-khuyen-mai__how-to-claim .page-khuyen-mai__section-description {
    color: #ffe;
}

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

.page-khuyen-mai__step-card {
    background-color: var(--card-bg-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
    text-align: center;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-khuyen-mai__step-number {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--gold-color);
    background-color: var(--deep-red-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    border: 2px solid var(--gold-color);
}

.page-khuyen-mai__step-title {
    font-size: 1.5em;
    color: var(--gold-color);
    margin-bottom: 15px;
}

.page-khuyen-mai__step-text {
    font-size: 1em;
    color: var(--text-main-color);
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-khuyen-mai__step-text a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__step-text a:hover {
    color: #fff;
}

.page-khuyen-mai__terms .page-khuyen-mai__section-title,
.page-khuyen-mai__important-notes .page-khuyen-mai__section-title,
.page-khuyen-mai__faq .page-khuyen-mai__section-title {
    color: var(--gold-color);
}

.page-khuyen-mai__terms .page-khuyen-mai__section-description,
.page-khuyen-mai__important-notes .page-khuyen-mai__section-description,
.page-khuyen-mai__faq .page-khuyen-mai__section-description {
    color: var(--text-main-color);
}

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

.page-khuyen-mai__list-item {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 18px 25px;
    margin-bottom: 15px;
    font-size: 1.1em;
    color: var(--text-main-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__list-item strong {
    color: var(--gold-color);
}

.page-khuyen-mai__list-item a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__list-item a:hover {
    color: #fff;
}

.page-khuyen-mai__text {
    font-size: 1.1em;
    color: var(--text-main-color);
    max-width: 900px;
    margin: 20px auto;
    text-align: center;
}

.page-khuyen-mai__text a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__text a:hover {
    color: #fff;
}

.page-khuyen-mai__faq-list {
    max-width: 900px;
    margin: 30px auto;
}

.page-khuyen-mai__faq-item {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    padding: 20px 25px;
}

.page-khuyen-mai__faq-question {
    font-size: 1.3em;
    color: var(--gold-color);
    font-weight: bold;
    margin-bottom: 10px;
}

.page-khuyen-mai__faq-answer {
    font-size: 1em;
    color: var(--text-main-color);
}

.page-khuyen-mai__faq-answer a {
    color: var(--gold-color);
    text-decoration: underline;
}

.page-khuyen-mai__faq-answer a:hover {
    color: #fff;
}

.page-khuyen-mai__text-center {
    text-align: center;
}

.page-khuyen-mai__final-cta .page-khuyen-mai__cta-buttons {
    margin-top: 30px;
}

/* --- Responsive Styles --- */

/* Tablet and Mobile */
@media (max-width: 1024px) {
    .page-khuyen-mai__main-title {
        font-size: clamp(2em, 5vw, 2.8em);
    }

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

    .page-khuyen-mai__grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }

    .page-khuyen-mai__step-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 20px;
    }

    .page-khuyen-mai__top-cta {
        gap: 15px;
    }

    .page-khuyen-mai__btn {
        padding: 10px 25px;
        font-size: 1em;
    }

    .page-khuyen-mai__card-figure img,
    .page-khuyen-mai__card-figure {
        max-width: 100%;
    }
}

/* Mobile specific styles */
@media (max-width: 768px) {
    /* 1. 顶区标题 + 双 CTA */
    .page-khuyen-mai__top-section {
        padding-top: 10px !important; /* Ensure small top padding */
        padding-bottom: 30px;
    }

    .page-khuyen-mai__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em) !important;
        margin-bottom: 10px;
    }

    .page-khuyen-mai__description {
        font-size: 0.95em;
        margin-bottom: 20px;
        padding: 0 15px;
    }

    .page-khuyen-mai__top-cta {
        flex-direction: column;
        gap: 10px;
        padding: 0 15px;
    }

    /* 2. 单栏长文容器 (general content sections) */
    .page-khuyen-mai__container {
        padding: 0 15px !important;
    }

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

    .page-khuyen-mai__section-title {
        font-size: 1.8em !important;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
        padding: 0 10px;
    }

    .page-khuyen-mai__card,
    .page-khuyen-mai__step-card,
    .page-khuyen-mai__list-item,
    .page-khuyen-mai__faq-item {
        padding: 20px 18px;
        margin-bottom: 10px;
    }

    .page-khuyen-mai__card-title,
    .page-khuyen-mai__step-title {
        font-size: 1.4em;
    }

    .page-khuyen-mai__faq-question {
        font-size: 1.2em;
    }

    .page-khuyen-mai__text {
        font-size: 0.95em;
        padding: 0 10px;
    }

    /* 3. 通用图片与 figure */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        min-width: unset; /* Allow smaller images if content requires */
        min-height: unset;
    }
    
    .page-khuyen-mai__card-figure {
        max-width: 100% !important;
        width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
    }

    /* 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;
        font-size: 1em;
    }

    .page-khuyen-mai__top-cta,
    .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-direction: column !important; /* Force vertical stacking for multiple buttons */
        gap: 10px !important;
    }

    /* 5. 注册教程与 FAQ 区块 (General lists/text blocks) */
    .page-khuyen-mai__list,
    .page-khuyen-mai__faq-list {
        margin: 20px auto;
        padding: 0 10px;
    }

    .page-khuyen-mai__step-grid {
        grid-template-columns: 1fr;
        padding: 0 15px;
    }

    .page-khuyen-mai__grid {
        grid-template-columns: 1fr;
        padding: 0 15px;
    }

    .page-khuyen-mai__list-item,
    .page-khuyen-mai__faq-item {
        font-size: 1em;
    }

    .page-khuyen-mai__faq-question {
        font-size: 1.1em;
    }

    .page-khuyen-mai__faq-answer {
        font-size: 0.95em;
    }
}