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

/* body đã padding-top: var(--header-offset)；trang này không được viết lại biến đó */
.page-register {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--background-color);
}

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

.page-register__section {
    padding: 60px 0;
}

.page-register__dark-bg {
    background-color: var(--background-color);
    color: var(--text-main);
}

.page-register__light-bg {
    background-color: #11271B; /* Sử dụng Card BG làm nền sáng hơn trong bối cảnh tối */
    color: var(--text-main);
}

.page-register__section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-register__section-description {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

.page-register__link {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-register__link:hover {
    color: var(--glow-color);
    text-decoration: underline;
}

.page-register__btn-primary,
.page-register__btn-secondary,
.page-register a[class*="button"],
.page-register a[class*="btn"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    text-align: center;
}

.page-register__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 15px rgba(34, 199, 104, 0.4);
}

.page-register__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 199, 104, 0.6);
}

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

.page-register__btn-secondary:hover {
    background: var(--secondary-color);
    color: var(--background-color);
    border-color: var(--secondary-color);
}

/* Hero Section */
.page-register__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 10px 0 60px 0; /* body đã có padding-top, chỉ thêm một khoảng cách nhỏ */
    min-height: 600px;
}

.page-register__hero-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.page-register__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    filter: brightness(0.5); /* Làm tối ảnh nền để chữ nổi bật */
}

.page-register__hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 20px;
    margin-top: 80px; /* Tạo khoảng trống để không bị che bởi header */
}

.page-register__main-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.1;
}

.page-register__description {
    font-size: clamp(18px, 2vw, 22px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.5;
}

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

/* Card Styles */
.page-register__card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-register__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-register__card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}

.page-register__card-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 15px;
    line-height: 1.3;
}

.page-register__card-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Why Join Section */
.page-register__why-join .page-register__section-title,
.page-register__how-to-register .page-register__section-title,
.page-register__registration-form-section .page-register__section-title,
.page-register__promotions .page-register__section-title,
.page-register__faq-section .page-register__section-title,
.page-register__cta-bottom .page-register__section-title {
    color: var(--text-main);
}

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

.page-register__feature-card .page-register__card-image {
    height: 200px;
}

/* How to Register Section */
.page-register__steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-register__step-card {
    background-color: var(--card-bg);
    padding: 25px;
}

.page-register__step-card .page-register__card-title {
    color: var(--secondary-color);
    font-size: 22px;
}

/* Registration Form Section */
.page-register__registration-form-section .page-register__section-description {
    margin-bottom: 30px;
}

.page-register__registration-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

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

.page-register__form-label {
    display: block;
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
}

.page-register__form-input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--background-color);
    color: var(--text-main);
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-register__form-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.page-register__form-input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(34, 199, 104, 0.3);
}

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

.page-register__form-checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--secondary-color);
}

.page-register__submit-button {
    width: 100%;
    margin-top: 20px;
}

.page-register__login-prompt {
    text-align: center;
    margin-top: 30px;
    font-size: 16px;
    color: var(--text-secondary);
}

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

.page-register__promo-card .page-register__card-image {
    height: 220px;
}

.page-register__promo-button {
    margin-top: 20px;
    align-self: center;
}

/* FAQ Section */
.page-register__faq-list {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.page-register__faq-item {
    background-color: var(--card-bg);
    padding: 20px 25px;
    text-align: left;
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.page-register__faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    list-style: none; /* Loại bỏ dấu mũi tên mặc định của details */
    padding-right: 10px;
}

.page-register__faq-item summary::-webkit-details-marker {
    display: none;
}

.page-register__faq-item[open] .page-register__faq-toggle {
    content: '−';
}

.page-register__faq-toggle {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.page-register__faq-item[open] .page-register__faq-toggle {
    transform: rotate(180deg);
}

.page-register__faq-answer {
    font-size: 16px;
    color: var(--text-secondary);
    padding-top: 15px;
    line-height: 1.6;
}

/* CTA Bottom Section */
.page-register__cta-bottom {
    text-align: center;
    padding: 80px 0;
}

.page-register__cta-bottom .page-register__section-description {
    margin-bottom: 40px;
}

/* Global image settings to prevent small icons */
.page-register img {
    min-width: 200px;
    min-height: 200px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-register__hero-content {
        margin-top: 60px;
    }
}

@media (max-width: 768px) {
    .page-register__container {
        padding-left: 15px !important;
        padding-right: 15px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-register__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px !important;
        min-height: 500px;
    }

    .page-register__hero-content {
        margin-top: 40px;
        padding: 15px;
    }

    .page-register__main-title {
        font-size: clamp(30px, 8vw, 48px);
    }

    .page-register__description {
        font-size: 16px;
        margin-bottom: 30px;
    }

    .page-register__section-title {
        font-size: clamp(24px, 6vw, 36px);
    }

    .page-register__section-description {
        font-size: 15px;
        margin-bottom: 30px;
    }

    .page-register__section {
        padding: 40px 0;
    }

    .page-register__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .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: 12px 20px !important;
        font-size: 16px !important;
    }

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

    .page-register__card {
        padding: 20px;
    }

    .page-register__card-image {
        height: 180px;
    }

    .page-register__card-title {
        font-size: 20px;
    }

    .page-register__card-text {
        font-size: 15px;
    }

    .page-register__registration-form {
        padding: 30px 20px;
    }

    .page-register__form-group {
        margin-bottom: 20px;
    }

    .page-register__form-label,
    .page-register__form-input,
    .page-register__login-prompt,
    .page-register__faq-item summary,
    .page-register__faq-answer p {
        font-size: 15px;
    }

    .page-register img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        min-width: 200px !important; /* Đảm bảo không nhỏ hơn 200px */
        min-height: 200px !important;
    }

    .page-register__hero-image {
        min-width: unset !important;
        min-height: unset !important;
    }

    .page-register__faq-toggle {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .page-register__hero-section {
        min-height: 400px;
    }

    .page-register__main-title {
        font-size: clamp(28px, 9vw, 40px);
    }

    .page-register__description {
        font-size: 14px;
    }

    .page-register__section-title {
        font-size: clamp(22px, 7vw, 30px);
    }

    .page-register__section-description {
        font-size: 14px;
    }
    
    .page-register__hero-content {
        margin-top: 20px;
    }
}