/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #F9FAFA;
}

.go-ref {
    cursor: pointer;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Color variables */
:root {
    --primary-blue: #0090FF;
    --light-bg: #F9FAFA;
    --accent-blue: #1A64FC;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 144, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-blue);
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background: #fff;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary {
    background: var(--accent-blue);
    color: white;
}

.btn-secondary:hover {
    background: #fff;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
}

.btn-icon {
    font-size: 16px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-bg) 0%, #e8f4ff 100%);
    padding: 60px 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 48px;
    font-weight: bold;
    color: var(--accent-blue);
    margin-bottom: 30px;
    line-height: 1.2;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-banner {
    position: relative;
}

.banner-card {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.banner-header {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
}

.banner-text {
    font-size: 16px;
    margin-bottom: 25px;
    opacity: 0.9;
}

.banner-btn {
    background: #FF6B35;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.banner-btn:hover {
    transform: scale(1.05);
}

.hero-description {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 16px;
    color: #666;
    line-height: 1.7;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: #fff;
}

.features h2 {
    font-size: 36px;
    color: var(--accent-blue);
    margin-bottom: 30px;
    text-align: center;
}

.features p {
    font-size: 16px;
    line-height: 1.7;
    color: #666;
    margin-bottom: 40px;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.platform-demo {
    text-align: center;
    margin: 40px 0;
}

.platform-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 144, 255, 0.2);
}

/* Advantages Section */
.advantages {
    padding: 80px 0;
    background: var(--light-bg);
}

.advantages h2 {
    font-size: 36px;
    color: var(--accent-blue);
    margin-bottom: 30px;
    text-align: center;
}

.advantages > p {
    font-size: 16px;
    line-height: 1.7;
    color: #666;
    margin-bottom: 40px;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.advantages-list {
    display: grid;
    gap: 20px;
    margin: 40px 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 144, 255, 0.1);
}

.advantage-number {
    background: var(--primary-blue);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
    flex-shrink: 0;
}

.advantage-text {
    font-size: 16px;
    color: #333;
}

.advantages .btn {
    display: block;
    margin: 40px auto 0;
    width: fit-content;
}

/* Registration Section */
.registration {
    padding: 80px 0;
    background: #fff;
}

.registration h2 {
    font-size: 36px;
    color: var(--accent-blue);
    margin-bottom: 30px;
    text-align: center;
}

.registration p {
    font-size: 16px;
    line-height: 1.7;
    color: #666;
    margin-bottom: 30px;
    text-align: center;
}

.registration-methods {
    list-style: none;
    max-width: 600px;
    margin: 0 auto 40px;
    font-size: 16px;
    color: #666;
}

.registration-methods li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.registration-methods li:before {
    content: "•";
    color: var(--primary-blue);
    font-weight: bold;
    margin-right: 10px;
}

.registration-demo {
    display: flex;
    justify-content: center;
    margin: 40px 0;
}

.registration-card {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    width: 100%;
    max-width: 500px;
}

.registration-header {
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 30px;
}

.form-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5px;
    margin-bottom: 30px;
}

.form-tab {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px;
    text-align: center;
    border-radius: 5px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.form-tab.active {
    background: rgba(255, 255, 255, 0.4);
}

.form-tab:hover {
    background: rgba(255, 255, 255, 0.3);
}

.form-content {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-select {
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    background: white;
    color: #333;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    cursor: pointer;
}

.checkbox-label input {
    width: 16px;
    height: 16px;
}

.registration-btn {
    background: #FF6B35;
    color: white;
    border: none;
    padding: 15px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.registration-btn:hover {
    transform: scale(1.05);
}

/* Payments Section */
.payments {
    padding: 80px 0;
    background: var(--light-bg);
}

.payments h2, .payments h3 {
    color: var(--accent-blue);
    margin-bottom: 30px;
    text-align: center;
}

.payments h2 {
    font-size: 36px;
}

.payments h3 {
    font-size: 24px;
    margin-top: 60px;
}

.payments-table {
    overflow-x: auto;
    margin: 30px 0;
}

.payments-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 144, 255, 0.1);
}

.payments-table th {
    background: var(--primary-blue);
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.payments-table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
}

.payments-table tr:hover {
    background: rgba(0, 144, 255, 0.05);
}

/* Reviews Section */
.reviews {
    padding: 80px 0;
    background: #fff;
}

.reviews h2 {
    font-size: 36px;
    color: var(--accent-blue);
    margin-bottom: 50px;
    text-align: center;
}

.review-item {
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.review-author {
    font-weight: bold;
    color: var(--accent-blue);
    margin-bottom: 10px;
}

.review-text blockquote {
    background: var(--light-bg);
    padding: 20px;
    border-left: 4px solid var(--primary-blue);
    border-radius: 0 10px 10px 0;
    font-style: italic;
    color: #666;
    line-height: 1.7;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background: var(--light-bg);
}

.faq h2 {
    font-size: 36px;
    color: var(--accent-blue);
    margin-bottom: 50px;
    text-align: center;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 144, 255, 0.1);
}

.faq-question {
    background: var(--primary-blue);
    color: white;
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
}

.faq-answer {
    padding: 20px;
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: 10px;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .header-content {
        flex-direction: column;
        gap: 20px;
    }

    .nav {
        gap: 20px;
    }

    .form-tabs {
        grid-template-columns: 1fr;
    }

    .advantages-list {
        grid-template-columns: 1fr;
    }

    .advantage-item {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero h1 {
        font-size: 24px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 12px;
    }

    .payments-table {
        font-size: 14px;
    }

    section {
        padding: 40px 0;
    }
}