/* মডুলার আর্কিটেকচারের সুবিধা: এই CSS শুধু ড্যাশবোর্ডেই কাজ করবে! */
:root {
    --card-bg: #FFFFFF; --border: #E5E5EA; --text-muted: #8E8E93;
    --success: #34C759; --primary: #007AFF; --bg-color: #F4F7F6;
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; 
    padding: 25px; 
    background: var(--bg-color); 
    margin: 0; 
    color: #1C1C1E; 
}

.loader { text-align: center; padding: 50px; color: var(--text-muted); font-size: 18px; font-weight: 600;}

.dash-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; flex-wrap: wrap; gap: 15px;}
.date-filter select { padding: 10px 15px; border-radius: 10px; border: 1px solid var(--border); font-size: 14px; font-weight: 600; outline: none; background: white; cursor:pointer; color: var(--primary);}

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 30px; }
.stat-card { background: var(--card-bg); padding: 20px; border-radius: 16px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); border: 1px solid var(--border); display: flex; align-items: center; gap: 15px; transition: transform 0.2s;}
.stat-card:hover { transform: translateY(-3px); }

.stat-icon { width: 55px; height: 55px; border-radius: 14px; display: flex; justify-content: center; align-items: center; font-size: 26px; }
.stat-info { flex: 1; }
.stat-title { font-size: 13px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;}
.stat-value { font-size: 26px; font-weight: 800; margin-top: 5px; letter-spacing: -0.5px;}
.stat-profit { color: var(--success); }

.chart-container { background: var(--card-bg); padding: 25px; border-radius: 16px; border: 1px solid var(--border); box-shadow: 0 4px 15px rgba(0,0,0,0.03);}

@media (max-width: 768px) {
    body { padding: 15px; }
    .stat-card { padding: 15px; }
    .stat-icon { width: 45px; height: 45px; font-size: 20px; }
    .stat-value { font-size: 22px; }
}