* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #60a5fa;

    --color-bg: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-card: #ffffff;
    --color-border: #e5e7eb;

    --color-text: #111827;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;

    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    --transition: all 0.3s ease;
}

body.dark-mode {
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-card: #1e293b;
    --color-border: #334155;

    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

body::-webkit-scrollbar {
    width: 12px;
}

body::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

body::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 6px;
    border: 3px solid var(--color-bg-secondary);
}

body::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

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

.navbar {
    position: sticky;
    top: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
}

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

.nav-menu a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--color-primary);
}

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

.theme-toggle {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
}

.theme-toggle:hover {
    background: var(--color-border);
}

.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

body.dark-mode .sun-icon {
    display: none;
}

body.dark-mode .moon-icon {
    display: block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

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

.hero {
    padding: 120px 0 80px;
    text-align: center;
}

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

.hero-badge {
    display: inline-block;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

.hero-description {
    font-size: 18px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    padding-top: 48px;
    border-top: 1px solid var(--color-border);
}

.stat h3 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.stat p {
    color: var(--color-text-secondary);
    font-size: 16px;
}

.dashboard-section {
    padding: 80px 0;
    background: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--color-text-secondary);
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.dashboard-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.dashboard-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.balance-card {
    grid-column: 1 / -1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.icon-btn {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
}

.icon-btn:hover {
    background: var(--color-border);
}

.text-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    font-weight: 600;
    cursor: pointer;
    font-size: 14px;
}

.text-btn:hover {
    text-decoration: underline;
}

.balance-amount {
    margin-bottom: 32px;
}

.balance-amount h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 8px;
}

.balance-change {
    font-size: 16px;
    font-weight: 600;
}

.balance-change.positive {
    color: var(--color-success);
}

.quick-actions {
    display: flex;
    gap: 16px;
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    color: var(--color-text);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-btn.send {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.action-btn.receive {
    border-color: var(--color-success);
    color: var(--color-success);
}

.action-btn.swap {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.assets-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.asset-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.asset-item:hover {
    background: var(--color-border);
}

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

.asset-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: white;
}

.asset-icon.btc {
    background: linear-gradient(135deg, #f7931a, #f2a900);
}

.asset-icon.eth {
    background: linear-gradient(135deg, #627eea, #8c9fef);
}

.asset-icon.sol {
    background: linear-gradient(135deg, #14f195, #9945ff);
}

.asset-icon.usdt {
    background: linear-gradient(135deg, #26a17b, #50af95);
}

.asset-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.asset-info p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.asset-value {
    text-align: right;
}

.asset-value h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.asset-value span {
    font-size: 14px;
    font-weight: 600;
}

.positive {
    color: var(--color-success);
}

.negative {
    color: var(--color-danger);
}

.neutral {
    color: var(--color-text-muted);
}

.transactions-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.transaction-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.transaction-item:hover {
    background: var(--color-border);
}

.transaction-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.transaction-icon.received {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.transaction-icon.sent {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.transaction-icon.swap {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-primary);
}

.transaction-info {
    flex: 1;
}

.transaction-info h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.transaction-info p {
    color: var(--color-text-secondary);
    font-size: 13px;
}

.transaction-amount {
    font-weight: 700;
    font-size: 15px;
}

.features-section {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.faq-section {
    padding: 80px 0;
    background: var(--color-bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-icon {
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 24px 24px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.quantum-security-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(29, 78, 216, 0.05));
}

.quantum-content {
    max-width: 900px;
    margin: 0 auto;
}

.quantum-text {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-xl);
}

.security-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    padding: 10px 20px;
    border-radius: 100px;
    font-weight: 600;
    margin-bottom: 24px;
}

.quantum-text h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--color-text);
}

.quantum-text > p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.security-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-bottom: 48px;
}

.security-feature-item {
    display: flex;
    gap: 20px;
}

.check-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.security-feature-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.security-feature-item p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.security-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.security-stat {
    text-align: center;
}

.security-stat h3 {
    font-size: 36px;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.security-stat p {
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 600;
}

.process-section {
    padding: 80px 0;
    background: var(--color-bg);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-bottom: 64px;
}

.step-card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 40px 32px;
    position: relative;
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.step-card.highlighted {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(29, 78, 216, 0.02));
}

.step-number {
    position: absolute;
    top: -20px;
    left: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    box-shadow: var(--shadow-lg);
}

.step-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 24px auto;
    color: var(--color-primary);
}

.step-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
    color: var(--color-text);
}

.step-card > p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
    text-align: center;
}

.step-details {
    list-style: none;
    padding: 0;
    margin: 0;
}

.step-details li {
    padding: 8px 0 8px 28px;
    position: relative;
    color: var(--color-text-secondary);
    font-size: 14px;
}

.step-details li::before {
    content: "•";
    position: absolute;
    left: 12px;
    color: var(--color-primary);
    font-weight: 800;
}

.important-note {
    display: flex;
    gap: 12px;
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--color-primary);
    padding: 16px;
    border-radius: var(--border-radius-sm);
    margin-top: 20px;
}

.important-note svg {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.important-note p {
    color: var(--color-text);
    font-size: 13px;
    line-height: 1.6;
    margin: 0;
}

.verification-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
    justify-content: center;
}

.badge {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.process-footer {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    box-shadow: var(--shadow-md);
}

.process-info {
    display: flex;
    gap: 20px;
    flex: 1;
}

.process-info svg {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 4px;
}

.process-info h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.process-info p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.footer {
    padding: 80px 0 32px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-section p {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
}

.footer-section a {
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .security-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 40px;
    }

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

    .hero-actions {
        flex-direction: column;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .quick-actions {
        flex-direction: column;
    }

    .quantum-text {
        padding: 32px 24px;
    }

    .quantum-text h3 {
        font-size: 24px;
    }

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

    .process-footer {
        flex-direction: column;
        text-align: center;
    }

    .process-info {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .balance-amount h1 {
        font-size: 40px;
    }

    .section-header h2 {
        font-size: 32px;
    }
}