:root {
    --primary-color: #2d3748;
    --secondary-color: #4a5568;
    --accent-color: #48bb78;
    --text-color: #e2e8f0;
    --background-color: #1a202c;
    --text-secondary: #a0aec0;
    --error-color: #ef4444;
    --accent-color-red: #ef4444;
    --accent-color-blue: #3b82f6;
}

body.theme-red {
    --accent-color: var(--accent-color-red);
}

body.theme-blue {
    --accent-color: var(--accent-color-blue);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease, color 0.3s ease;
}

#loading-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
    transition: opacity 0.5s ease-out;
}

.loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 80%;
    max-width: 400px;
}

.logo-container-loading {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.logo-container-loading .logo-icon {
    color: var(--accent-color);
    font-size: 50px;
    margin-right: 15px;
}

.logo-container-loading .logo-text {
    color: var(--text-color);
    font-size: 38px;
    font-weight: 700;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 50px;
    overflow: hidden;
    margin-bottom: 20px;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: var(--accent-color);
    border-radius: 50px;
    transition: width 0.3s ease-out;
}

#loading-page p {
    font-size: 1.1em;
    font-weight: 500;
    color: var(--text-secondary);
}

#loading-page.fade-out {
    opacity: 0;
}

body.no-scroll {
    overflow: hidden;
}

@media (max-width: 480px) {
    .logo-container-loading .logo-icon {
        font-size: 35px;
    }

    .logo-container-loading .logo-text {
        font-size: 28px;
    }

    #loading-page p {
        font-size: 0.9em;
    }
}

.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: var(--primary-color);
    margin: auto;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 600px;
    position: relative;
    animation: zoomIn 0.3s ease-out;
    color: var(--text-color);
}

.modal-content h2 {
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 25px;
    font-size: 24px;
}

.modal-content ol {
    margin: 0 0 20px 20px;
    padding: 0;
    list-style-type: decimal;
}

.modal-content ol li {
    margin-bottom: 10px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.close-button {
    color: var(--text-secondary);
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    top: 15px;
    right: 20px;
    cursor: pointer;
    transition: color 0.3s;
}

.close-button:hover,
.close-button:focus {
    color: var(--accent-color);
    text-decoration: none;
}

@keyframes zoomIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

#understoodButton {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .modal-content {
        padding: 20px;
    }

    .modal-content h2 {
        font-size: 20px;
    }

    .modal-content ol li {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .modal-content {
        padding: 15px;
    }

    .modal-content h2 {
        font-size: 18px;
    }

    .close-button {
        font-size: 24px;
    }
}

.navbar {
    background-color: var(--primary-color);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-icon {
    color: var(--accent-color);
    font-size: 24px;
    margin-right: 10px;
}

.logo-text {
    color: var(--text-color);
    font-size: 20px;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--accent-color);
}

.login-icon-container {
    margin-left: auto;
}

.login-icon {
    color: var(--text-color);
    font-size: 24px;
    text-decoration: none;
    transition: color 0.3s, transform 0.2s;
    padding: 5px;
    border-radius: 5px;
}

.login-icon:hover {
    color: var(--accent-color);
    transform: scale(1.1);
}

.main-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 30px 20px;
    overflow-y: auto;
}

.registration-container {
    background-color: var(--primary-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
    animation: fadeIn 0.5s ease-out;
}

.form-header {
    text-align: center;
    margin-bottom: 25px;
}

.form-header h2 {
    color: var(--text-color);
    font-size: 28px;
    margin: 0;
    font-weight: 700;
}

.form-header p {
    color: var(--text-secondary);
    margin-top: 10px;
}

.form-section {
    margin-bottom: 25px;
}

.form-section h3 {
    color: var(--text-color);
    font-size: 18px;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--secondary-color);
    padding-bottom: 8px;
    display: flex;
    align-items: center;
}

.form-section h3 i {
    margin-right: 10px;
    color: var(--accent-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--secondary-color);
    border-radius: 5px;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(72, 187, 120, 0.2);
}

.password-hint {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 5px;
    opacity: 0;
    height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease-in-out, height 0.3s ease-in-out;
}

.password-hint.show-error {
    opacity: 1;
    height: auto;
    color: var(--error-color);
}

.input-group {
    display: flex;
    align-items: center;
    width: 100%;
}

.input-group .form-input {
    flex: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    min-width: 0;
}

.input-group-addon {
    background-color: var(--secondary-color);
    padding: 12px 15px;
    border: 1px solid var(--secondary-color);
    border-left: none;
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    color: var(--text-color);
    white-space: nowrap;
    font-size: 16px;
}

.checkbox-group {
    margin-bottom: 15px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.checkbox-item input[type="checkbox"] {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--secondary-color);
    border-radius: 4px;
    margin-right: 10px;
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
    flex-shrink: 0;
}

.checkbox-item input[type="checkbox"]:hover {
    border-color: var(--accent-color);
}

.checkbox-item input[type="checkbox"]:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.checkbox-item input[type="checkbox"]:checked::after {
    content: "✓";
    position: absolute;
    color: white;
    font-size: 12px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.checkbox-item label {
    cursor: pointer;
    font-size: 16px;
}

.product-selection {
    margin: 30px 0;
}

.product-accordion {
    background-color: var(--primary-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}

.accordion-item {
    border-bottom: 1px solid var(--secondary-color);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    padding: 15px 20px;
    background-color: var(--primary-color);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.accordion-header:hover {
    background-color: var(--secondary-color);
}

.accordion-header.active {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: var(--secondary-color);
}

.accordion-content-inner {
    padding: 15px 20px;
}

.product-item {
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 5px;
    margin: 5px 0;
}

.product-item:last-child {
    border-bottom: none;
}

.product-item:hover {
    background-color: rgba(72, 187, 120, 0.1);
    transform: translateY(-2px);
}

body.theme-red .product-item:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

body.theme-blue .product-item:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.product-item.selected {
    background-color: rgba(72, 187, 120, 0.2);
    border-left: 3px solid var(--accent-color);
}

body.theme-red .product-item.selected {
    background-color: rgba(239, 68, 68, 0.2);
}

body.theme-blue .product-item.selected {
    background-color: rgba(59, 130, 246, 0.2);
}

.product-name {
    font-weight: bold;
    color: var(--text-color);
    font-size: 17px;
}

.product-price {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 18px;
    white-space: nowrap;
}

.product-specs {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.product-badge {
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
    margin-left: 10px;
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.payment-method {
    border: 1px solid var(--secondary-color);
    border-radius: 5px;
    padding: 10px 15px;
    cursor: pointer;
    transition: all 0.2s;
    flex: 1;
    min-width: 120px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.payment-method:hover {
    border-color: var(--accent-color);
}

.payment-method.selected {
    border-color: var(--accent-color);
    background-color: rgba(72, 187, 120, 0.1);
}

body.theme-red .payment-method.selected {
    background-color: rgba(239, 68, 68, 0.1);
}

body.theme-blue .payment-method.selected {
    background-color: rgba(59, 130, 246, 0.1);
}

.payment-method i {
    font-size: 24px;
    margin-bottom: 5px;
    display: block;
    color: var(--text-color);
}

.submit-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 15px 20px;
    font-size: 16px;
    font-weight: 600;
    width: 100%;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-btn:hover {
    background-color: color-mix(in srgb, var(--accent-color) 80%, black);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px color-mix(in srgb, var(--accent-color) 30%, transparent);
}

.submit-btn:active {
    transform: translateY(0);
}

.summary-box {
    background-color: var(--secondary-color);
    border-radius: 10px;
    padding: 20px;
    margin-top: 30px;
}

.summary-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.summary-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.summary-label {
    color: var(--text-secondary);
}

.summary-value {
    font-weight: 600;
}

.summary-total {
    font-size: 18px;
    color: var(--accent-color);
    font-weight: 700;
}

.footer {
    background-color: var(--primary-color);
    color: var(--text-secondary);
    padding: 40px 20px;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-left {
    flex: 1;
    min-width: 300px;
}

.footer-left .logo-container {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.footer-left .logo-icon {
    color: var(--accent-color);
    font-size: 28px;
    margin-right: 10px;
}

.footer-left .logo-text {
    color: var(--text-color);
    font-size: 22px;
    font-weight: 700;
}

.footer-left p {
    line-height: 1.7;
    margin-bottom: 20px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    font-size: 20px;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.social-icons a:hover {
    color: var(--accent-color);
}

.footer-middle {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-column {
    flex: 1;
    min-width: 150px;
}

.footer-column h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-column li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--secondary-color);
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    margin: 0;
    font-size: 14px;
}

.bottom-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 20px;
    font-size: 14px;
    transition: color 0.3s;
}

.bottom-links a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.floating-theme-switcher {
    position: fixed;
    bottom: 100px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.floating-theme-switcher .toggle-button {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    border: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    font-size: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

.floating-theme-switcher .toggle-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.floating-theme-switcher .theme-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background-color: var(--primary-color);
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease-out, transform 0.3s ease-out, visibility 0.3s;
}

.floating-theme-switcher .theme-options.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.floating-theme-switcher .theme-button {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-theme-switcher .theme-button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.floating-theme-switcher .theme-button.active {
    border-color: var(--text-color);
    transform: scale(1.05);
}

.floating-theme-switcher .green-theme {
    background-color: #48bb78;
}

.floating-theme-switcher .red-theme {
    background-color: #ef4444;
}

.floating-theme-switcher .blue-theme {
    background-color: #3b82f6;
}

.accordion-faq-container {
    background-color: var(--primary-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    margin-top: 20px;
}

.accordion-faq-item {
    border-bottom: 1px solid var(--secondary-color);
}

.accordion-faq-item:last-child {
    border-bottom: none;
}

.accordion-faq-header {
    padding: 18px 20px;
    background-color: var(--primary-color);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 17px;
}

.accordion-faq-header:hover {
    background-color: var(--secondary-color);
}

.accordion-faq-header.active {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.accordion-faq-header i {
    transition: transform 0.3s ease;
}

.accordion-faq-header.active i {
    transform: rotate(180deg);
}

.accordion-faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: var(--secondary-color);
}

.accordion-faq-content p {
    padding: 15px 20px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    text-align: left;
}

.accordion-faq-content ul {
    padding: 10px 20px 15px 40px;
    margin: 0;
    color: var(--text-secondary);
    list-style-type: disc;
}

.accordion-faq-content ul li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.accordion-faq-content p+p {
    margin-top: 10px;
}

.accordion-faq-content ul li:last-child {
    margin-bottom: 0;
}

.separate-feature-section {
    background-color: var(--primary-color);
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    max-width: 1200px;
    width: calc(100% - 40px);
    margin-top: 30px;
    padding: 30px;
    animation: fadeIn 0.5s ease-out;
}

.section-title {
    color: var(--text-color);
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-weight: 700;
}

.section-title i {
    color: var(--accent-color);
    font-size: 32px;
}

.feature-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.feature-card {
    background-color: var(--background-color);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s e