/* CSS cho trang VIP贵宾计划 (Chương Trình VIP) */

/* Biến màu */
:root {
    --page-vip-program-primary-color: #2F6BFF;
    --page-vip-program-secondary-color: #6FA3FF;
    --page-vip-program-button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
    --page-vip-program-card-bg: #FFFFFF;
    --page-vip-program-background-color: #F4F7FB;
    --page-vip-program-text-main: #1F2D3D;
    --page-vip-program-text-black: #000000;
    --page-vip-program-border-color: #D6E2FF;
    --page-vip-program-glow-color: #A5C4FF;
    --page-vip-program-dark-section-text: #ffffff;
}

/* Thiết lập chung cho trang */
.page-vip-program {
    font-family: 'Arial', sans-serif;
    color: var(--page-vip-program-text-main); /* Mặc định chữ tối trên nền sáng */
    background-color: var(--page-vip-program-background-color);
    line-height: 1.6;
}

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

.page-vip-program__section {
    padding: 60px 0;
}

.page-vip-program__dark-section {
    background-color: var(--page-vip-program-primary-color);
    color: var(--page-vip-program-dark-section-text);
}

.page-vip-program__dark-bg {
    background-color: var(--page-vip-program-primary-color);
    color: var(--page-vip-program-dark-section-text);
}

.page-vip-program__section-title {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: var(--page-vip-program-text-black);
}

.page-vip-program__dark-section .page-vip-program__section-title,
.page-vip-program__dark-bg .page-vip-program__section-title {
    color: var(--page-vip-program-dark-section-text);
}

.page-vip-program__text-block {
    font-size: 17px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 30px;
}

.page-vip-program__card {
    background-color: var(--page-vip-program-card-bg);
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    padding: 25px;
    text-align: center;
    color: var(--page-vip-program-text-main);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--page-vip-program-border-color);
    height: 100%; /* Đảm bảo các card có chiều cao bằng nhau trong grid */
    box-sizing: border-box;
}

.page-vip-program__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.page-vip-program__card-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 15px;
    border-radius: 5px;
}

.page-vip-program__card-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--page-vip-program-text-black);
}

.page-vip-program__card-description {
    font-size: 15px;
    color: var(--page-vip-program-text-main);
    margin-bottom: 15px;
}

.page-vip-program__card-features {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
    font-size: 15px;
    color: var(--page-vip-program-text-main);
}

.page-vip-program__card-features li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 25px;
}

.page-vip-program__card-features li::before {
    content: '✅';
    position: absolute;
    left: 0;
    color: var(--page-vip-program-primary-color);
}

.page-vip-program__btn-primary,
.page-vip-program__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-vip-program__btn-primary {
    background: var(--page-vip-program-button-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 5px 15px rgba(47, 107, 255, 0.4);
}

.page-vip-program__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(47, 107, 255, 0.5);
}

.page-vip-program__btn-secondary {
    background-color: var(--page-vip-program-card-bg);
    color: var(--page-vip-program-primary-color);
    border: 2px solid var(--page-vip-program-primary-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-left: 20px;
}

.page-vip-program__btn-secondary:hover {
    background-color: var(--page-vip-program-primary-color);
    color: #ffffff;
    box-shadow: 0 5px 15px rgba(47, 107, 255, 0.4);
}

.page-vip-program__cta-container {
    text-align: center;
    margin-top: 40px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

/* HERO Section */
.page-vip-program__hero-section {
    position: relative;
    padding-top: 10px; /* Nhỏ hơn so với header offset */
    padding-bottom: 60px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-vip-program__hero-image-wrapper {
    width: 100%;
    max-height: 600px; /* Giới hạn chiều cao cho desktop */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-vip-program__hero-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
}

.page-vip-program__hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin-top: 40px;
    padding: 0 20px;
}

.page-vip-program__hero-title {
    font-size: clamp(38px, 5vw, 56px);
    font-weight: 800;
    color: var(--page-vip-program-text-black);
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-vip-program__hero-description {
    font-size: clamp(18px, 2.5vw, 22px);
    color: var(--page-vip-program-text-main);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-vip-program__hero-cta {
    margin-top: 20px;
}

/* VIP Tiers Section */
.page-vip-program__tiers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

/* Benefits Section */
.page-vip-program__benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

/* How to Join Section (Steps) */
.page-vip-program__join-section .page-vip-program__section-title,
.page-vip-program__join-section .page-vip-program__text-block {
    color: var(--page-vip-program-dark-section-text);
}

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

.page-vip-program__step-card {
    background-color: var(--page-vip-program-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.page-vip-program__step-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 20px;
}

.page-vip-program__step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--page-vip-program-primary-color);
    color: #ffffff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    border: 3px solid var(--page-vip-program-card-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-vip-program__step-card .page-vip-program__card-title {
    margin-top: 15px;
    font-size: 20px;
}

/* FAQ Section */
details.page-vip-program__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--page-vip-program-border-color);
  overflow: hidden;
  background: var(--page-vip-program-card-bg);
  color: var(--page-vip-program-text-main);
}
details.page-vip-program__faq-item summary.page-vip-program__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-vip-program__faq-item summary.page-vip-program__faq-question::-webkit-details-marker {
  display: none;
}
details.page-vip-program__faq-item summary.page-vip-program__faq-question:hover {
  background: #f5f5f5;
}
.page-vip-program__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--page-vip-program-text-black);
}
.page-vip-program__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-vip-program__faq-item .page-vip-program__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
  color: var(--page-vip-program-text-main);
}

/* Conclusion Section */
.page-vip-program__conclusion-section .page-vip-program__section-title,
.page-vip-program__conclusion-section .page-vip-program__text-block {
    color: var(--page-vip-program-dark-section-text);
}

.page-vip-program__conclusion-cta {
    margin-top: 30px;
}

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

/* Tablet and Mobile (max-width: 1024px) - General adjustments */
@media (max-width: 1024px) {
    .page-vip-program__container {
        padding: 15px;
    }

    .page-vip-program__section {
        padding: 40px 0;
    }

    .page-vip-program__section-title {
        margin-bottom: 30px;
    }

    .page-vip-program__hero-content {
        margin-top: 20px;
    }

    .page-vip-program__tiers-grid,
    .page-vip-program__benefits-grid,
    .page-vip-program__steps-grid {
        gap: 20px;
    }

    .page-vip-program__card {
        padding: 20px;
    }

    .page-vip-program__btn-primary,
    .page-vip-program__btn-secondary {
        padding: 12px 25px;
        font-size: 15px;
    }
}

/* Mobile (max-width: 768px) - Must include all required sections */
@media (max-width: 768px) {
    /* 1. HERO 主图区域 */
    .page-vip-program__hero-section {
        padding-top: 10px; /* 顶距约 10px */
        padding-bottom: 40px;
    }

    .page-vip-program__hero-image-wrapper {
        max-height: 300px; /* Giới hạn chiều cao cho mobile */
    }

    .page-vip-program__hero-image {
        object-fit: contain !important; /* Mobile: object-fit:contain */
        aspect-ratio: unset !important; /* Mobile: aspect-ratio:unset */
        width: 100% !important;
        height: auto !important;
    }

    .page-vip-program__hero-title {
        font-size: clamp(28px, 8vw, 40px);
        margin-bottom: 15px;
    }

    .page-vip-program__hero-description {
        font-size: clamp(16px, 4vw, 18px);
        margin-bottom: 25px;
    }

    /* 2. 产品展示图区域 (VIP Tiers, Benefits) */
    .page-vip-program__tiers-grid,
    .page-vip-program__benefits-grid {
        grid-template-columns: 1fr 1fr; /* 2 cột */
        gap: 15px;
        overflow-x: hidden; /* Ngăn tràn ngang */
    }

    .page-vip-program__step-card {
        padding: 25px;
    }

    .page-vip-program__step-icon {
        width: 60px;
        height: 60px;
    }

    .page-vip-program__step-number {
        width: 35px;
        height: 35px;
        font-size: 18px;
        top: -10px;
    }

    /* 3. 装饰主标题 + 长文 SEO 区 */
    .page-vip-program__section-title {
        font-size: clamp(24px, 6vw, 30px);
        margin-bottom: 25px;
        padding: 0 10px;
    }

    .page-vip-program__text-block {
        font-size: 16px;
        margin: 0 auto 20px;
        padding: 0 10px;
        text-align: left; /* Căn trái cho văn bản dài trên mobile */
        max-width: 100%;
        box-sizing: border-box;
    }

    /* 4. 通用图片与容器 */
    .page-vip-program img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block;
    }

    .page-vip-program__section,
    .page-vip-program__container,
    .page-vip-program__card {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* 5. 按钮与按钮容器 */
    .page-vip-program__btn-primary,
    .page-vip-program__btn-secondary,
    .page-vip-program a[class*="button"],
    .page-vip-program 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: 12px 15px;
        margin: 0 !important; /* Reset margin-left for secondary button */
    }

    .page-vip-program__cta-container {
        flex-direction: column; /* Xếp chồng nút dọc */
        gap: 15px;
        padding: 0 15px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    /* FAQ Mobile */
    details.page-vip-program__faq-item summary.page-vip-program__faq-question { padding: 15px; }
    .page-vip-program__faq-qtext { font-size: 15px; }
    details.page-vip-program__faq-item .page-vip-program__faq-answer { padding: 0 15px 15px; }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    .page-vip-program__tiers-grid,
    .page-vip-program__benefits-grid,
    .page-vip-program__steps-grid {
        grid-template-columns: 1fr; /* 1 cột */
    }
}