:root{--bg-dark: #0f172a;--card-dark: #1e293b;--primary: #3b82f6;--accent: #8b5cf6;--text: #f8fafc;--text-dim: #94a3b8}body{margin:0;font-family:Inter,sans-serif;background-color:var(--bg-dark);color:var(--text)}.dashboard{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background-color:var(--card-dark);padding:2rem;border-right:1px solid #334155}.main-content{padding:2rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background-color:var(--card-dark);padding:1.5rem;border-radius:12px;border:1px solid #334155;transition:transform .2s}.stat-card:hover{transform:translateY(-5px)}.station-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.station-card{background-color:var(--card-dark);padding:1.5rem;border-radius:16px;border:1px solid #334155;background:linear-gradient(145deg,#1e293b,#111827)}.btn{padding:.5rem 1rem;border-radius:8px;border:none;cursor:pointer;font-weight:600;transition:opacity .2s}.btn-primary{background-color:var(--primary);color:#fff}.btn-accent{background-color:var(--accent);color:#fff}.btn-danger{background-color:#ef4444;color:#fff}.status-badge{padding:.25rem .75rem;border-radius:99px;font-size:.875rem}.status-online{background:#065f46;color:#34d399}.status-offline{background:#7f1d1d;color:#f87171}