/* Digital Exchange Hub - Modern USDT Exchange Landing Page */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background-color: #0a0e27;
    overflow-x: hidden;
}

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

/* Header / Navbar Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h2 {
    color: #00ff88;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #00ff88;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #00ff88;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* Hero Section Styles */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%2300ff88" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #ffffff, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #b8c5d1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(45deg, #00ff88, #00cc6a);
    color: #0a0e27;
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 136, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #00ff88;
    border: 2px solid #00ff88;
}

.btn-secondary:hover {
    background: #00ff88;
    color: #0a0e27;
    transform: translateY(-2px);
}

/* Features Section Styles */
.features {
    padding: 5rem 0;
    background: #1a1f3a;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #ffffff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-box {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 255, 136, 0.1);
}

.feature-box:hover {
    transform: translateY(-5px);
    background: rgba(0, 255, 136, 0.1);
    border-color: #00ff88;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-box h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #00ff88;
}

.feature-box p {
    color: #b8c5d1;
    line-height: 1.6;
}

/* Exchange Rates Section Styles */
.rates {
    padding: 5rem 0;
    background: #0a0e27;
}

.rates h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #ffffff;
}

.rates-table {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.rates-table table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255, 255, 255, 0.05);
}

.rates-table th,
.rates-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(0, 255, 136, 0.1);
}

.rates-table th {
    background: rgba(0, 255, 136, 0.1);
    color: #00ff88;
    font-weight: 600;
}

.rates-table tr:hover {
    background: rgba(0, 255, 136, 0.05);
}

.positive {
    color: #00ff88;
}

.negative {
    color: #ff6b6b;
}

/* Testimonials Section Styles */
.testimonials {
    padding: 5rem 0;
    background: #1a1f3a;
}

.testimonials h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #ffffff;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 255, 136, 0.1);
}

.testimonial:hover {
    transform: translateY(-5px);
    background: rgba(0, 255, 136, 0.1);
}

.testimonial-image img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.testimonial-content p {
    font-style: italic;
    margin-bottom: 1rem;
    color: #b8c5d1;
    line-height: 1.6;
}

.testimonial-content h4 {
    color: #00ff88;
    margin-bottom: 0.5rem;
}

.testimonial-content span {
    color: #b8c5d1;
    font-size: 0.9rem;
}

/* Contact Section Styles */
.contact {
    padding: 5rem 0;
    background: #0a0e27;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #ffffff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    color: #00ff88;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.contact-info p {
    color: #b8c5d1;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #b8c5d1;
}

.contact-icon {
    font-size: 1.2rem;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(0, 255, 136, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(0, 255, 136, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00ff88;
    background: rgba(0, 255, 136, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #b8c5d1;
}

/* Footer Styles */
.footer {
    background: #1a1f3a;
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(0, 255, 136, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: #00ff88;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: #b8c5d1;
}

.footer-social h4 {
    color: #ffffff;
    margin-bottom: 1rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: #00ff88;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 255, 136, 0.1);
    color: #b8c5d1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu ul {
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .features h2,
    .rates h2,
    .testimonials h2,
    .contact h2 {
        font-size: 2rem;
    }
    
    .feature-box,
    .testimonial,
    .contact-form {
        padding: 1.5rem;
    }
    
    .rates-table th,
    .rates-table td {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation for better UX */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-box,
.testimonial,
.contact-form {
    animation: fadeInUp 0.6s ease-out;
}

/* Additional hover effects */
.feature-box:hover .feature-icon,
.testimonial:hover .testimonial-image img {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}