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

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

.page-register__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 20px 60px;
    text-align: center;
    overflow: hidden;
    background-color: var(--deep-green-color);
}

.page-register__hero-image-wrapper {
    width: 100%;
    max-width: 1920px;
    margin-bottom: 30px;
}

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

.page-register__hero-content {
    max-width: 900px;
    z-index: 1;
    color: var(--text-main-color);
}

.page-register__main-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--gold-color);
    text-shadow: 0 0 10px rgba(242, 193, 78, 0.5);
}

.page-register__subtitle {
    font-size: 1.25rem;
    margin-bottom: 30px;
    color: var(--text-secondary-color);
}

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

.page-register__btn-primary,
.page-register__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-register__btn-primary {
    background: var(--button-gradient);
    color: var(--text-main-color);
    border: none;
    box-shadow: 0 5px 15px rgba(42, 209, 111, 0.4);
}

.page-register__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(42, 209, 111, 0.6);
}

.page-register__btn-secondary {
    background-color: transparent;
    color: var(--gold-color);
    border: 2px solid var(--gold-color);
    box-shadow: 0 5px 15px rgba(242, 193, 78, 0.2);
}

.page-register__btn-secondary:hover {
    background-color: rgba(242, 193, 78, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(242, 193, 78, 0.4);
}

.page-register__benefits-section,
.page-register__steps-section,
.page-register__form-section,
.page-register__security-section,
.page-register__promotions-section,
.page-register__faq-section,
.page-register__cta-final-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    text-align: center;
}

.page-register__section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--gold-color);
    margin-bottom: 20px;
    font-weight: bold;
    text-shadow: 0 0 8px rgba(242, 193, 78, 0.3);
}

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

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

.page-register__benefit-card,
.page-register__promo-card {
    background-color: var(--card-bg-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    border: 1px solid var(--border-color);
}

.page-register__benefit-card:hover,
.page-register__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

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

.page-register__card-title {
    font-size: 1.4rem;
    color: var(--text-main-color);
    margin-bottom: 10px;
    font-weight: bold;
}

.page-register__card-text {
    font-size: 1rem;
    color: var(--text-secondary-color);
    flex-grow: 1;
}

.page-register__steps-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-register__step-item {
    background-color: var(--card-bg-color);
    border-radius: 12px;
    padding: 30px;
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.page-register__step-number {
    background: var(--button-gradient);
    color: var(--text-main-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: bold;
    margin: 0 auto 20px;
    box-shadow: 0 3px 10px rgba(42, 209, 111, 0.5);
}

.page-register__step-title {
    font-size: 1.5rem;
    color: var(--text-main-color);
    margin-bottom: 15px;
}

.page-register__step-text {
    font-size: 1rem;
    color: var(--text-secondary-color);
}

.page-register__steps-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    margin-top: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.page-register__registration-form {
    background-color: var(--card-bg-color);
    border-radius: 12px;
    padding: 40px;
    max-width: 600px;
    margin: 40px auto 0;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
    text-align: left;
    border: 1px solid var(--border-color);
}

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

.page-register__form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-main-color);
    font-weight: bold;
    font-size: 1.1rem;
}

.page-register__form-input {
    width: 100%;
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--deep-green-color);
    color: var(--text-main-color);
    font-size: 1rem;
    box-sizing: border-box;
}

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

.page-register__form-input:focus {
    border-color: var(--glow-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(87, 227, 141, 0.3);
}

.page-register__form-checkbox {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.page-register__form-checkbox input[type="checkbox"] {
    margin-right: 10px;
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.page-register__terms-link {
    color: var(--gold-color);
    text-decoration: none;
}

.page-register__terms-link:hover {
    text-decoration: underline;
}

.page-register__form-submit-btn {
    width: 100%;
    padding: 15px 20px;
    font-size: 1.2rem;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    background: var(--button-gradient);
    color: var(--text-main-color);
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(42, 209, 111, 0.4);
}

.page-register__form-submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(42, 209, 111, 0.6);
}

.page-register__security-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: 40px;
    align-items: center;
    text-align: left;
}

.page-register__security-text {
    flex: 1;
    min-width: 300px;
    color: var(--text-secondary-color);
}

.page-register__security-text h3 {
    color: var(--text-main-color);
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.page-register__security-image {
    flex: 1;
    min-width: 300px;
    max-width: 600px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

.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-title {
    color: var(--gold-color);
}

.page-register__cta-container {
    margin-top: 40px;
}

.page-register__faq-list {
    margin-top: 40px;
    text-align: left;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-register__faq-item {
    background-color: var(--card-bg-color);
    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-register__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-main-color);
    background-color: var(--deep-green-color);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.page-register__faq-question:hover {
    background-color: rgba(17, 168, 78, 0.2);
}

.page-register__faq-item[open] .page-register__faq-question {
    border-bottom: 1px solid var(--border-color);
}

.page-register__faq-qtext {
    flex-grow: 1;
}

.page-register__faq-toggle {
    font-size: 1.8rem;
    line-height: 1;
    margin-left: 15px;
    color: var(--gold-color);
}

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

.page-register__faq-answer {
    padding: 20px 25px;
    font-size: 1rem;
    color: var(--text-secondary-color);
    line-height: 1.7;
}

.page-register__faq-answer p {
    margin: 0;
}

.page-register__cta-final-section .page-register__section-title {
    color: var(--primary-color);
}

.page-register__cta-final-section .page-register__cta-buttons {
    margin-top: 30px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .page-register {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-register__hero-section {
        padding: 10px 15px 40px;
    }

    .page-register__main-title {
        font-size: 2rem;
    }

    .page-register__subtitle {
        font-size: 1rem;
    }

    .page-register__cta-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        padding: 0 15px;
        box-sizing: border-box !important;
    }

    .page-register__btn-primary,
    .page-register__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 15px;
        font-size: 1rem;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-register__benefits-section,
    .page-register__steps-section,
    .page-register__form-section,
    .page-register__security-section,
    .page-register__promotions-section,
    .page-register__faq-section,
    .page-register__cta-final-section {
        padding: 40px 15px;
    }

    .page-register__section-title {
        font-size: 1.8rem;
    }

    .page-register__section-description {
        font-size: 0.95rem;
    }

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

    .page-register__benefit-card,
    .page-register__promo-card {
        padding: 20px;
    }

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

    .page-register__card-text {
        font-size: 0.9rem;
    }

    .page-register__steps-container {
        flex-direction: column;
        gap: 20px;
    }

    .page-register__step-item {
        max-width: 100%;
        padding: 20px;
    }

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

    .page-register__form-label {
        font-size: 1rem;
    }

    .page-register__form-input {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    .page-register__form-checkbox label {
        font-size: 0.9rem;
    }

    .page-register__form-submit-btn {
        font-size: 1.1rem;
        padding: 12px 15px;
    }

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

    .page-register__security-text,
    .page-register__security-image {
        min-width: unset;
        width: 100%;
    }

    .page-register__security-text h3 {
        font-size: 1.2rem;
    }

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

    .page-register__faq-toggle {
        font-size: 1.5rem;
    }

    .page-register__faq-answer {
        padding: 15px 20px;
        font-size: 0.95rem;
    }
    
    /* Mobile image responsiveness */
    .page-register img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-register__section,
    .page-register__card,
    .page-register__container,
    .page-register__hero-image-wrapper,
    .page-register__benefits-grid,
    .page-register__steps-container,
    .page-register__registration-form,
    .page-register__security-content,
    .page-register__promotions-grid,
    .page-register__faq-list,
    .page-register__cta-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }

    .page-register__hero-section {
        padding-top: 10px !important; /* body đã xử lý padding-top cho header */
    }

    /* Ensure all images within content areas are responsive and don't cause overflow */
    .page-register__benefit-icon,
    .page-register__promo-image,
    .page-register__steps-image,
    .page-register__security-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    /* Buttons specific for mobile */
    .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__cta-buttons,
    .page-register__button-group,
    .page-register__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;
        overflow: hidden !important;
    }
    .page-register__cta-buttons {
        flex-direction: column;
    }
}

/* Ensure no filter is used on images */
.page-register img {
    filter: none; /* Explicitly disable any filter */
}

/* Desktop video width for flex containers */
.page-register__video-container {
    width: 100%; /* Ensure full width on desktop if it's a flex item */
    max-width: 1200px; /* Optional: constrain max width */
}