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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #111827;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    background-color: #111827;
    border-bottom: 1px solid #374151;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #8B5CF6, #EC4899);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.brand-name {
    color: white;
    font-size: 20px;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: #D1D5DB;
    text-decoration: none;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: white;
}

.nav-buttons {
    display: flex;
    gap: 16px;
}

.btn-secondary {
    background-color: #374151;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-secondary:hover {
    background-color: #4B5563;
}

.btn-primary {
    background: linear-gradient(135deg, #8B5CF6, #EC4899);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #7C3AED, #DB2777);
    transform: translateY(-1px);
}

.btn-primary.large {
    padding: 12px 32px;
    font-size: 16px;
}

.btn-outline {
    border: 1px solid #6B7280;
    color: white;
    background: transparent;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline.large {
    padding: 12px 32px;
    font-size: 16px;
}

.btn-outline:hover {
    background-color: #374151;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: #D1D5DB;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: white;
    margin-bottom: 24px;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #A78BFA, #F472B6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: #D1D5DB;
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    font-size: 14px;
    color: #9CA3AF;
}

/* Main Feature */
.main-feature {
    padding: 64px 0;
}

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 48px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    max-width: 800px;
    margin: 0 auto;
}

.feature-icon {
    color: #8B5CF6;
    margin-bottom: 24px;
}

.feature-card h2 {
    font-size: 28px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 8px;
}

.feature-subtitle {
    color: #6B7280;
    margin-bottom: 24px;
    font-size: 16px;
}

.feature-description {
    color: #4B5563;
    line-height: 1.7;
    font-size: 16px;
}

/* Features Grid */
.features {
    padding: 64px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 24px;
}

.expandable-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.expandable-card:hover {
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.card-icon {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.card-icon.purple { background-color: #8B5CF6; }
.card-icon.blue { background-color: #3B82F6; }
.card-icon.green { background-color: #10B981; }
.card-icon.orange { background-color: #F59E0B; }
.card-icon.indigo { background-color: #6366F1; }
.card-icon.teal { background-color: #14B8A6; }

.card-info h3 {
    font-size: 20px;
    font-weight: 600;
    color: #111827;
    margin-bottom: 4px;
}

.card-subtitle {
    font-size: 14px;
    color: #6B7280;
}

.expand-btn {
    background: none;
    border: none;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    color: #6B7280;
    transition: all 0.3s ease;
}

.expand-btn:hover {
    background-color: #F3F4F6;
}

.card-content {
    display: none;
    padding-top: 16px;
    border-top: 1px solid #F3F4F6;
    color: #4B5563;
    line-height: 1.6;
}

.expandable-card.expanded .card-content {
    display: block;
}

.expandable-card.expanded .expand-btn svg {
    transform: rotate(180deg);
}

/* Security Features */
.security-features {
    padding: 64px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: #D1D5DB;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.security-card {
    background: linear-gradient(135deg, #374151, #111827);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid #4B5563;
    transition: all 0.3s ease;
}

.security-card:hover {
    border-color: #8B5CF6;
}

.security-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #8B5CF6, #EC4899);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 16px;
}

.security-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: white;
    margin-bottom: 8px;
}

.security-card p {
    color: #D1D5DB;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.learn-more {
    color: #A78BFA;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.learn-more:hover {
    color: #C4B5FD;
}

/* Stats Section */
.stats {
    background: linear-gradient(135deg, #581C87, #BE185D);
    padding: 64px 0;
}

.stats-header {
    text-align: center;
    margin-bottom: 48px;
}

.stats-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.stats-header p {
    color: #DDD6FE;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
}

.stat-label {
    color: #DDD6FE;
    font-size: 14px;
}

/* Footer */
.footer {
    background-color: #111827;
    border-top: 1px solid #374151;
    padding: 48px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-column h3 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.footer-column li {
    margin-bottom: 8px;
}

.footer-column a {
    color: #9CA3AF;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 32px;
    text-align: center;
}

.footer-bottom p {
    color: #9CA3AF;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu,
    .nav-buttons {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

    .hero-description {
        font-size: 18px;
    }

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

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

    .feature-card {
        padding: 32px 24px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .hero {
        padding: 48px 0;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-description {
        font-size: 16px;
    }

    .btn-primary.large,
    .btn-outline.large {
        padding: 10px 24px;
        font-size: 14px;
    }

    .feature-card {
        padding: 24px 16px;
    }

    .expandable-card {
        padding: 16px;
    }

    .card-info {
        gap: 12px;
    }

    .card-icon {
        width: 48px;
        height: 48px;
    }

    .security-features,
    .features,
    .main-feature {
        padding: 48px 0;
    }

    .stats {
        padding: 48px 0;
    }

    .footer {
        padding: 32px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}