/* style/register.css */
:root {
    --primary-color: #017439;
    --secondary-color: #FFFFFF;
    --register-button-bg: #C30808;
    --register-button-text: #000000; /* Overridden for WCAG AA contrast */
    --light-text-color: #333333;
    --dark-text-color: #ffffff;
    --border-color: #e0e0e0;
    --hover-bg-color: #f5f5f5;
    --active-bg-color: #eeeeee;
}

.page-register {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--light-text-color); /* Default text color for light backgrounds */
    background-color: var(--secondary-color); /* Body background is light */
}

.page-register__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    box-sizing: border-box;
}

.page-register__section-heading {
    font-size: 2.5em;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
}

.page-register__section-description {
    font-size: 1.1em;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
    color: var(--light-text-color);
}

/* Hero Section */
.page-register__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    padding-top: var(--header-offset, 120px); /* Ensures content is not hidden by fixed header */
    background: linear-gradient(135deg, var(--primary-color) 0%, #004d27 100%); /* Darker gradient for contrast */
    color: var(--dark-text-color);
}

.page-register__hero-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-register__hero-image {
    width: 100%;
    margin-bottom: 30px;
}

.page-register__hero-image img {
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
    border-radius: 8px;
    object-fit: cover;
}

.page-register__hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    width: 100%;
}

.page-register__main-heading {
    font-size: 3em;
    margin-bottom: 15px;
    color: var(--dark-text-color);
    line-height: 1.2;
}

.page-register__intro-text {
    font-size: 1.3em;
    margin-bottom: 30px;
    color: var(--dark-text-color);
    max-width: 900px;
}

.page-register__cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--register-button-bg);
    color: var(--register-button-text); /* WCAG AA compliant text color */
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.2em;
    font-weight: bold;
    margin-top: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border: none;
}

.page-register__cta-button:hover {
    background: #a30606; /* Slightly darker red on hover */
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* General Button Styles */
.page-register__btn-primary {
    background: var(--register-button-bg);
    color: var(--register-button-text); /* WCAG AA compliant text color */
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    display: inline-block;
    border: none;
}

.page-register__btn-primary:hover {
    background: #a30606;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.page-register__btn-secondary {
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    display: inline-block;
    border: 2px solid var(--primary-color);
}

.page-register__btn-secondary:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.page-register__button-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

/* Why Register Section */
.page-register__why-register-section {
    background-color: var(--secondary-color);
    padding: 60px 0;
    color: var(--light-text-color);
}

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

.page-register__benefit-item {
    background: #f9f9f9;
    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;
}

.page-register__benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-register__benefit-item img {
    width: 100%;
    max-width: 250px;
    height: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    object-fit: cover;
}

.page-register__benefit-title {
    font-size: 1.4em;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-register__benefit-text {
    font-size: 1em;
    color: var(--light-text-color);
}

/* Guide Section */
.page-register__guide-section {
    background: linear-gradient(135deg, #004d27, var(--primary-color));
    padding: 80px 0;
    color: var(--dark-text-color);
}

.page-register__guide-section .page-register__section-heading,
.page-register__guide-section .page-register__section-description {
    color: var(--dark-text-color);
}

.page-register__guide-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
}

.page-register__guide-steps {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.page-register__step-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.page-register__step-number {
    background: var(--register-button-bg);
    color: var(--register-button-text); /* WCAG AA compliant text color */
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: bold;
    flex-shrink: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-register__step-title {
    font-size: 1.3em;
    color: var(--dark-text-color);
    margin-top: 5px;
    margin-bottom: 10px;
    font-weight: bold;
}

.page-register__step-text {
    font-size: 1em;
    color: #e0e0e0;
}

.page-register__guide-image {
    flex: 1;
    text-align: center;
}

.page-register__guide-image img {
    width: 100%;
    height: auto;
    max-width: 600px;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

/* Form Section */
.page-register__form-section {
    background-color: var(--secondary-color);
    padding: 60px 0;
    color: var(--light-text-color);
}

.page-register__registration-form {
    max-width: 600px;
    margin: 40px auto 0 auto;
    padding: 40px;
    background: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.page-register__form-group {
    margin-bottom: 25px;
}

.page-register__form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--light-text-color);
}

.page-register__form-input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1em;
    box-sizing: border-box;
}

.page-register__form-input::placeholder {
    color: #a0a0a0;
}

.page-register__checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.page-register__form-checkbox {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.page-register__checkbox-group a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.page-register__checkbox-group a:hover {
    text-decoration: underline;
}

.page-register__submit-button {
    width: 100%;
    padding: 15px;
    background: var(--register-button-bg);
    color: var(--register-button-text); /* WCAG AA compliant text color */
    border: none;
    border-radius: 50px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    margin-top: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-register__submit-button:hover {
    background: #a30606;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Promotions Section */
.page-register__promotions-section {
    background: linear-gradient(135deg, var(--primary-color), #004d27);
    padding: 80px 0;
    color: var(--dark-text-color);
}

.page-register__promotions-section .page-register__section-heading,
.page-register__promotions-section .page-register__section-description {
    color: var(--dark-text-color);
}

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

.page-register__promotion-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--dark-text-color);
}

.page-register__promotion-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-register__promotion-card img {
    width: 100%;
    max-width: 280px;
    height: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    object-fit: cover;
}

.page-register__promotion-title {
    font-size: 1.4em;
    color: var(--dark-text-color);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-register__promotion-text {
    font-size: 1em;
    color: #e0e0e0;
}

/* FAQ Section */
.page-register__faq-section {
    background-color: var(--secondary-color);
    padding: 60px 0;
    color: var(--light-text-color);
}

.page-register__faq-list {
    max-width: 900px;
    margin: 40px auto 0 auto;
}

/* FAQ容器样式 */
.page-register__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
}

/* FAQ默认状态 - 答案隐藏 */
.page-register__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 15px;
  opacity: 0;
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-register__faq-item.active .page-register__faq-answer {
  max-height: 2000px !important; /* 🚨 Sử dụng!important để đảm bảo ưu tiên, giá trị đủ lớn để chứa mọi nội dung */
  padding: 20px 15px !important;
  opacity: 1;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
}

/* 问题样式 */
.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-register__faq-question:hover {
  background: var(--hover-bg-color);
  border-color: #d0d0d0;
}

.page-register__faq-question:active {
  background: var(--active-bg-color);
}

/* 问题标题样式 */
.page-register__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
  color: var(--light-text-color);
}

/* 切换图标 */
.page-register__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: #666;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-register__faq-item.active .page-register__faq-toggle {
  color: var(--primary-color);
  transform: rotate(45deg); /* Change to X */
}

/* CTA Bottom Section */
.page-register__cta-bottom-section {
    background: linear-gradient(135deg, #004d27, var(--primary-color));
    padding: 80px 0;
    color: var(--dark-text-color);
    text-align: center;
}

.page-register__cta-bottom-section .page-register__section-heading,
.page-register__cta-bottom-section .page-register__section-description {
    color: var(--dark-text-color);
}


/* 🚨 移动端响应式设计（必须严格遵守） */
@media (max-width: 768px) {
    .page-register {
        font-size: 15px;
        line-height: 1.5;
    }

    .page-register__container {
        padding: 20px 15px !important;
    }

    .page-register__hero-section {
        padding-top: var(--header-offset, 120px) !important;
        padding-bottom: 40px;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-register__main-heading {
        font-size: 2em;
    }

    .page-register__intro-text {
        font-size: 1em;
    }

    .page-register__cta-button {
        padding: 12px 30px;
        font-size: 1em;
    }

    .page-register__section-heading {
        font-size: 1.8em;
    }

    .page-register__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-register__benefits-grid,
    .page-register__promotions-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-register__guide-content {
        flex-direction: column;
        gap: 30px;
    }

    .page-register__guide-image img {
        max-width: 100%;
    }

    .page-register__step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .page-register__step-number {
        margin-bottom: 10px;
    }

    .page-register__registration-form {
        padding: 25px;
    }

    .page-register__form-label {
        font-size: 0.95em;
    }

    .page-register__form-input {
        padding: 10px 12px;
        font-size: 0.9em;
    }

    .page-register__checkbox-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-register__submit-button {
        padding: 12px;
        font-size: 1em;
    }

    .page-register__promotion-title,
    .page-register__benefit-title {
        font-size: 1.2em;
    }

    .page-register__faq-question {
        padding: 15px;
        flex-wrap: wrap;
    }
    
    .page-register__faq-question h3 {
        font-size: 1em;
        margin-bottom: 0;
        width: calc(100% - 40px);
    }
    
    .page-register__faq-toggle {
        margin-left: 10px;
        width: 24px;
        height: 24px;
        font-size: 20px;
    }
    
    .page-register__faq-answer {
        padding: 0 15px;
    }
    
    .page-register__faq-item.active .page-register__faq-answer {
        padding: 15px !important;
    }

    /* 🚨 移动端图片强制适配 */
    .page-register img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    
    .page-register__hero-section,
    .page-register__why-register-section,
    .page-register__guide-section,
    .page-register__form-section,
    .page-register__promotions-section,
    .page-register__faq-section,
    .page-register__cta-bottom-section,
    .page-register__container,
    .page-register__benefit-item,
    .page-register__promotion-card,
    .page-register__registration-form,
    .page-register__faq-list {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* 🚨 移动端按钮响应式适配 */
    .page-register__cta-button,
    .page-register__btn-primary,
    .page-register__btn-secondary,
    .page-register a[class*="button"],
    .page-register 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-register__button-group {
        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 buttons */
        gap: 15px;
    }
}