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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #000000;
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    flex: 1;
    justify-content: center;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    transition: opacity 0.3s;
}

.nav-menu a:hover {
    opacity: 0.7;
}

.nav-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.btn-icon {
    background: none;
    border: none;
    color: #ffffff;
    cursor: pointer;
    font-size: 18px;
    padding: 8px;
    transition: opacity 0.3s;
}

.btn-icon:hover {
    opacity: 0.7;
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-primary {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    border: none;
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    text-align: center;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.highlight {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
}

.btn-primary-large {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    border: none;
    color: #ffffff;
    padding: 16px 40px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.5);
}

.btn-secondary-large {
    background-color: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    padding: 16px 40px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary-large:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.version-text {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* Features Section */
.features-section {
    padding: 80px 0;
}

.feature-card {
    background-color: #ffffff;
    border-radius: 24px;
    padding: 60px;
    margin-bottom: 30px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card-large {
    color: #000000;
}

.feature-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #000000;
}

.feature-subtitle {
    font-size: 18px;
    color: rgba(0, 0, 0, 0.6);
    margin-bottom: 25px;
}

.feature-description {
    font-size: 16px;
    color: rgba(0, 0, 0, 0.7);
    line-height: 1.8;
    max-width: 600px;
}

.feature-card-split {
    background: linear-gradient(135deg, #f5f5f5 0%, #e5e5e5 100%);
    padding: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    min-height: 350px;
}

.feature-content-right {
    padding: 60px;
    width: 100%;
}

.feature-title-dark {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #000000;
}

.feature-subtitle-light {
    font-size: 16px;
    color: rgba(0, 0, 0, 0.5);
    margin-bottom: 20px;
}

.feature-description-dark {
    font-size: 16px;
    color: rgba(0, 0, 0, 0.7);
    line-height: 1.8;
    max-width: 550px;
}

/* Expandable Features */
.expandable-features {
    padding: 40px 0 80px;
}

.expandable-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.expandable-item {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.expandable-item:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

.expandable-header {
    display: flex;
    align-items: center;
    padding: 30px;
    gap: 25px;
    cursor: pointer;
}

.expandable-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(99, 102, 241, 0.2) 100%);
    border-radius: 12px;
    flex-shrink: 0;
}

.expandable-text {
    flex: 1;
}

.expandable-text h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

.expandable-text p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.expand-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 32px;
    cursor: pointer;
    padding: 10px;
    transition: transform 0.3s, color 0.3s;
}

.expand-btn:hover {
    color: rgba(255, 255, 255, 0.9);
    transform: translateX(5px);
}

/* Security Section */
.security-section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 50px;
    max-width: 600px;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.security-card {
    background-color: rgba(255, 255, 255, 0.95);
    color: #000000;
    padding: 40px;
    border-radius: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.security-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.3);
}

.security-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
}

.security-card p {
    font-size: 15px;
    color: rgba(0, 0, 0, 0.7);
    line-height: 1.7;
}

.security-card-cta {
    background: linear-gradient(135deg, #1a4d3f 0%, #0f3a2e 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.security-card-cta h3 {
    color: #ffffff;
    font-size: 24px;
}

.security-card-cta .btn-primary {
    align-self: flex-start;
    padding: 12px 24px;
    font-size: 20px;
}

/* Coins Section */
.coins-section {
    padding: 100px 0;
    text-align: center;
}

.coins-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 40px;
}

.btn-coins {
    background-color: rgba(255, 255, 255, 0.95);
    border: none;
    color: #000000;
    padding: 18px 40px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-coins:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.2);
}

.coins-icon {
    font-size: 24px;
    font-weight: 300;
}

/* Footer */
.footer {
    background-color: #0a0a0a;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-tagline {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-column h4 {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: #ffffff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #ffffff;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 48px;
    }

    .security-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-actions {
        gap: 10px;
    }

    .btn-primary,
    .btn-secondary {
        display: none;
    }

    .hero {
        padding: 140px 0 60px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary-large,
    .btn-secondary-large {
        width: 100%;
        max-width: 300px;
    }

    .feature-card {
        padding: 40px 30px;
    }

    .feature-title,
    .feature-title-dark {
        font-size: 32px;
    }

    .feature-card-split {
        min-height: auto;
    }

    .expandable-header {
        padding: 20px;
        gap: 15px;
    }

    .expandable-icon {
        width: 60px;
        height: 60px;
    }

    .expandable-text h3 {
        font-size: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .feature-title,
    .feature-title-dark {
        font-size: 24px;
    }

    .section-title,
    .coins-title {
        font-size: 28px;
    }

    .expandable-text h3 {
        font-size: 14px;
    }

    .expandable-text p {
        font-size: 12px;
    }
}