:root {
    --primary: #1976d2;
    --primary-dark: #1565c0;
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-card-light: #ffffff;
    --text-primary: #e6edf3;
    --text-muted: #8b949e;
    --border-color: #30363d;
    --success: #2ea043;
    --danger: #f85149;
    --warning: #d29922;
}

[data-theme="light"] {
    --bg-dark: #f5f7fa;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
}

body {
    background: var(--bg-dark);
    color: var(--text-primary);
    font-family: IRANYekanXFaNum, IRANYekanX, 'Segoe UI', Tahoma, sans-serif;
    transition: background 0.3s, color 0.3s;
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
}

.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s, box-shadow 0.2s;
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(25, 118, 210, 0.15);
}

.glass-card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
}

.form-select, .form-control {
    background: var(--bg-dark);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.form-select:focus, .form-control:focus {
    background: var(--bg-dark);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(25, 118, 210, 0.25);
}

.table-dark {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-item strong {
    color: var(--primary);
}

.signal-panel .card-header.bg-gradient {
    background: linear-gradient(135deg, #1976d2, #7b1fa2) !important;
}

.signal-buy { color: var(--success); font-weight: bold; }
.signal-sell { color: var(--danger); font-weight: bold; }
.status-waiting { color: var(--warning); }
.status-active { color: var(--success); }

.sm-icon {
    font-size: 18px !important;
    vertical-align: middle;
    margin-left: 4px;
}

.footer {
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

.chart-card {
    overflow: hidden;
}

.preview-code {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    color: #58a6ff;
    font-size: 0.9rem;
    direction: ltr;
    text-align: left;
}

.trade-win { color: var(--success); }
.trade-loss { color: var(--danger); }

.navbar-brand .material-icons {
    font-size: 28px;
}

#tradingChart {
    width: 100%;
}

.chart-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 17, 23, 0.85);
    z-index: 2;
    color: var(--text-muted);
}

.chart-loading.hidden {
    display: none;
}

.chart-error {
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    #tradingChart {
        height: 350px !important;
    }
}