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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #333;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
}

.nav-brand i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

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

.nav-links a:hover {
    color: #2563eb;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

/* Optional gradient text utility */
.gradient-text {
    background: linear-gradient(90deg, #fff, #ffe4e6, #e9d5ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #ff6b6b;
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
}

.btn i {
    margin-right: 0.5rem;
}

/* Card Mockup */
.card-mockup {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.virtual-card {
    width: 300px;
    height: 180px;
    border-radius: 15px;
    padding: 20px;
    position: relative;
    margin: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.virtual-card:hover {
    transform: translateY(-5px) rotate(2deg);
}

.virtual-card.visa {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    transform: rotate(-5deg);
}

.virtual-card.mastercard {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    transform: rotate(5deg);
    margin-left: -50px;
}

.card-logo {
    font-size: 1.2rem;
    font-weight: bold;
    text-align: right;
    margin-bottom: 20px;
}

.card-number {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.card-holder, .card-expiry {
    font-size: 0.9rem;
    opacity: 0.9;
}

.card-holder {
    position: absolute;
    bottom: 20px;
    left: 20px;
}

.card-expiry {
    position: absolute;
    bottom: 20px;
    right: 20px;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: #f8fafc;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
}

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

.feature-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.feature-item p {
    color: #718096;
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: 80px 0;
    background: white;
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
}

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

.step-item {
    text-align: center;
    position: relative;
    padding: 2rem;
}

.step-number {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: #ff6b6b;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.step-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem auto 1.5rem;
    color: white;
    font-size: 2.5rem;
}

.step-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.step-item p {
    color: #718096;
    line-height: 1.6;
}

/* Deposit & Withdraw Section */
.deposit-withdraw {
    padding: 80px 0;
    background: #f8fafc;
}

.deposit-withdraw h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #718096;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.wallets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.wallet-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.wallet-item:hover {
    transform: translateY(-5px);
}

.wallet-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.wallet-logo i {
    font-size: 3rem;
    color: #2563eb;
}

.wallet-logo span {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
}

.wallet-logo.bkash i { color: #e91e63; }
.wallet-logo.nagad i { color: #ff9800; }
.wallet-logo.rocket i { color: #8e24aa; }
.wallet-logo.upay i { color: #4caf50; }

.trust-text {
    text-align: center;
    font-size: 1.1rem;
    color: #4a5568;
    font-weight: 500;
}

/* Why Choose Us Section */
.why-choose-us {
    padding: 80px 0;
    background: white;
}

.why-choose-us h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.highlight-item {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid transparent;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.highlight-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.highlight-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2d3748;
}

.highlight-item p {
    color: #718096;
    line-height: 1.6;
}

/* Bottom CTA Section */
.bottom-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.footer-brand i {
    margin-right: 0.5rem;
    color: #667eea;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #4a5568;
    color: #a0aec0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .card-mockup {
        flex-direction: column;
    }
    
    .virtual-card.mastercard {
        margin-left: 0;
        margin-top: -20px;
    }
    
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: block;
        color: #111827;
    }

    /* Mobile dropdown menu using the same .nav-links */
    .navbar.open .nav-links {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(0,0,0,0.08);
        padding: 1rem 20px;
        flex-direction: column;
        gap: 1rem;
        box-shadow: 0 10px 25px rgba(0,0,0,0.08);
        z-index: 999;
    }
    
    .features-grid,
    .steps-grid,
    .wallets-grid,
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .virtual-card {
        width: 250px;
        height: 150px;
        padding: 15px;
    }
    
    .card-number {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    h2 {
        font-size: 2rem !important;
    }
    
    .container {
        padding: 0 15px;
    }
}

/* Animations */
/* Reveal on scroll (IntersectionObserver) */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delay utilities */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.25s; }
.delay-3 { transition-delay: 0.4s; }

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

/* Loading animation for cards */
.virtual-card {
    animation: cardFloat 3s ease-in-out infinite alternate;
}

.virtual-card.mastercard {
    animation-delay: 0.5s;
}

@keyframes cardFloat {
    0% {
        transform: translateY(0px) rotate(5deg);
    }
    100% {
        transform: translateY(-10px) rotate(5deg);
    }
}

.virtual-card.visa {
    animation: cardFloatVisa 3s ease-in-out infinite alternate;
}

@keyframes cardFloatVisa {
    0% {
        transform: translateY(0px) rotate(-5deg);
    }
    100% {
        transform: translateY(-10px) rotate(-5deg);
    }
}




/* Scroll to top button */
#scrollTopBtn {
    position: fixed;
    right: 20px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: #111827;
    color: #fff;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
    z-index: 1000;
}

#scrollTopBtn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#scrollTopBtn:hover {
    transform: translateY(-2px);
}