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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #141b2d;
    --bg-card: #1a2332;
    --accent-blue: #1e40af;
    --accent-blue-light: #3b82f6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --border-color: #2d3748;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--accent-blue);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

.logo h1 {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--accent-blue-light), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-blue-light);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-blue-light);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

.section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
}

/* Market Overview */
.market-overview {
    margin-top: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.2);
    border-color: var(--accent-blue-light);
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    transition: transform 0.2s ease;
}

.stat-change {
    font-size: 1.1rem;
    font-weight: 600;
}

.stat-change.positive {
    color: var(--accent-green);
}

.stat-change.negative {
    color: var(--accent-red);
}

.trends-summary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.trends-summary h3 {
    margin-bottom: 1.5rem;
    color: var(--accent-blue-light);
}

.trends-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.trend-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.trend-label {
    font-weight: 500;
}

.trend-value {
    font-weight: bold;
}

.trend-value.positive {
    color: var(--accent-green);
}

.trend-value.negative {
    color: var(--accent-red);
}

/* Crypto Section */
.crypto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.crypto-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.crypto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.2);
    border-color: var(--accent-blue-light);
}

.crypto-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.crypto-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
}

.crypto-symbol {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.crypto-price .price {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.3rem;
    transition: transform 0.2s ease;
}

.crypto-price .change {
    font-size: 1rem;
    font-weight: 600;
}

.crypto-price .change.positive {
    color: var(--accent-green);
}

.crypto-price .change.negative {
    color: var(--accent-red);
}

.crypto-card canvas {
    max-height: 150px;
    width: 100% !important;
}

/* Stocks Section */
.stocks-table {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.stocks-table table {
    width: 100%;
    border-collapse: collapse;
}

.stocks-table thead {
    background: var(--bg-secondary);
}

.stocks-table th {
    padding: 1rem;
    text-align: left;
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    border-bottom: 2px solid var(--accent-blue);
}

.stocks-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.stocks-table tbody tr {
    transition: background 0.3s ease;
}

.stocks-table tbody tr:hover {
    background: var(--bg-secondary);
}

.stock-name {
    font-weight: 600;
}

.stock-ticker {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stock-price {
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.2s ease;
}

.stock-change {
    font-weight: 600;
}

.stock-change.positive {
    color: var(--accent-green);
}

.stock-change.negative {
    color: var(--accent-red);
}

/* Analytics Section */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.analytics-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.analytics-card.buy {
    border-left: 4px solid var(--accent-green);
}

.analytics-card.avoid {
    border-left: 4px solid var(--accent-red);
}

.analytics-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.analytics-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.analytics-item {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 3px solid;
}

.buy .analytics-item {
    border-left-color: var(--accent-green);
}

.avoid .analytics-item {
    border-left-color: var(--accent-red);
}

.analytics-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--accent-blue-light);
}

.analytics-item p {
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    line-height: 1.6;
}

.confidence {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--bg-primary);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* News Section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.2);
    border-color: var(--accent-blue-light);
}

.news-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--accent-blue);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.news-category.crypto {
    background: var(--accent-green);
}

.news-category.stocks {
    background: var(--accent-blue-light);
}

.news-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.news-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.news-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Contacts Section */
.contacts-content {
    display: flex;
    justify-content: center;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    max-width: 600px;
    width: 100%;
    text-align: center;
}

.contact-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--accent-blue-light);
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

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

.contact-item {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    color: var(--text-primary);
}

.contact-item strong {
    color: var(--accent-blue-light);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
    text-align: center;
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.85rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--bg-secondary);
        width: 100%;
        padding: 2rem;
        transition: left 0.3s ease;
        border-top: 2px solid var(--accent-blue);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }

    .nav-list.active {
        left: 0;
    }

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

    .section-title {
        font-size: 2rem;
    }

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

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

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

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

    .stocks-table {
        overflow-x: auto;
    }

    .stocks-table table {
        min-width: 600px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .contact-card {
        padding: 2rem 1.5rem;
    }
}