/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #0f172a;
    color: #e2e8f0;
    min-height: 100vh;
}

/* Logo styles */
.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-top: 1rem;
}

.logo-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    border-radius: 16px;
}

.logo-icon img {
    width: 150%;
    height: 150%;
    object-fit: contain;
}

.logo-icon.small {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

/* Login page styles */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #000000;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-form {
    background: transparent;
    padding: 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: #94a3b8;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid #333333;
    border-radius: 8px;
    background: #000000;
    color: #e2e8f0;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #6366f1;
}

.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    min-height: 1.25rem;
}

.login-button {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: white;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.login-button:hover {
    opacity: 0.9;
}

/* Dashboard page styles */
.dashboard-page {
    background: #f8fafc;
    color: #1e293b;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    color: #1e293b;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.25rem;
    color: #1e40af;
}

.logout-button {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: #1e40af;
    background: transparent;
    border: 1px solid #3b82f6;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.logout-button:hover {
    color: #ffffff;
    background: #3b82f6;
    border-color: #3b82f6;
}

.dashboard-content {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-content h1 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #1e293b;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.chart-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.chart-card h2 {
    font-size: 1rem;
    font-weight: 500;
    color: #3b82f6;
    margin-bottom: 1rem;
}

/* Tab styles */
.tab-bar {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 2rem;
}

.tab-button {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #64748b;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}

.tab-button:hover {
    color: #1e293b;
}

.tab-button.active {
    color: #3b82f6;
    border-bottom-color: #3b82f6;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* Trades table */
.tab-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.trades-container {
    background: #ffffff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.trades-title {
    font-size: 1rem;
    font-weight: 500;
    color: #3b82f6;
    margin-bottom: 1rem;
}

.trades-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.trades-table th {
    text-align: left;
    padding: 0.5rem 0.75rem;
    color: #64748b;
    font-weight: 500;
    border-bottom: 1px solid #e2e8f0;
}

.trades-table td {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid #f1f5f9;
    color: #1e293b;
}

.trades-table tbody tr:last-child td {
    border-bottom: none;
}

.trades-table tbody tr:hover td {
    background: #f8fafc;
}

.side-buy  { color: #10b981; font-weight: 500; }
.side-sell { color: #ef4444; font-weight: 500; }
.pnl-positive { color: #10b981; font-weight: 500; }
.pnl-negative { color: #ef4444; font-weight: 500; }

.tab-loading { color: #64748b; padding: 1rem 0; }
.tab-error   { color: #ef4444; padding: 1rem 0; }

/* Responsive adjustments */
@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-content {
        padding: 1rem;
    }

    .login-container {
        padding: 1rem;
    }
}