* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --accent: #3b82f6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-primary);
}

.nav-link.active {
    color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
}

.header .container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-primary);
    border-radius: 20px;
    border: 1px solid var(--border);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.status-text {
    font-size: 14px;
    font-weight: 500;
}

/* Main Content */
main {
    padding: 30px 0;
}

.section {
    margin-bottom: 40px;
}

.section h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.trading-window {
    margin-top: 12px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border-radius: 6px;
    font-size: 14px;
    text-align: center;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
    font-size: 14px;
}

/* Table */
.table-container {
    overflow-x: auto;
}

.trades-table {
    width: 100%;
    border-collapse: collapse;
}

.trades-table thead {
    background: var(--bg-primary);
}

.trades-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.trades-table td {
    padding: 16px;
    border-top: 1px solid var(--border);
    font-size: 14px;
}

.trades-table tbody tr:hover {
    background: var(--bg-primary);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge.buy {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge.sell {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.badge.open {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent);
}

.badge.closed {
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-secondary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 32px;
}

.stat-info {
    flex: 1;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-card .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 20px 0;
    margin-top: 60px;
    text-align: center;
}

.footer p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 4px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 16px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .trades-table {
        font-size: 12px;
    }

    .trades-table th,
    .trades-table td {
        padding: 8px;
    }
}

/* Profit/Loss Colors */
.profit-positive {
    color: var(--success);
}

.profit-negative {
    color: var(--danger);
}

/* Chart Link Button */
.chart-btn {
    display: inline-block;
    padding: 6px 12px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 16px;
    transition: all 0.2s;
}

.chart-btn:hover {
    background: #2563eb;
    transform: scale(1.1);
} 
 /* Backtest Page Styles */
.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 4px;
}

.backtest-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

.btn-primary {
    padding: 12px 24px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.btn-primary:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.loader {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}