:root{--bg: #071617;--card: #0b1b1b;--muted: #8ca3a3;--accent: #10f0c6;--text: #d7efef}[data-theme=light]{--bg: #f6fbfb;--card: #ffffff;--muted: #6b7b7b;--accent: #0d9488;--text: #0b1b1b}*{box-sizing:border-box}body,html,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica Neue,Arial}.app-root{display:flex;min-height:100vh}.sidebar{width:220px;background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(0,0,0,.06));padding:18px;display:flex;flex-direction:column;gap:18px;border-right:1px solid rgba(255,255,255,.03)}.sidebar.collapsed{width:72px}.sidebar .sidebar-nav button{display:block;width:100%;padding:10px;border-radius:8px;background:transparent;color:var(--muted);border:none;text-align:left;margin-bottom:6px}.sidebar .sidebar-nav button.active{background:rgba(16,240,198,.08);color:var(--accent)}.sidebar .collapse-btn{border:none;background:transparent;color:var(--muted);padding:6px;margin-bottom:6px;cursor:pointer}.main-content{flex:1;display:flex;flex-direction:column}.app-header{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;border-bottom:1px solid rgba(255,255,255,.03)}.brand{display:flex;gap:10px;align-items:center}.logo-mark{width:36px;height:36px;border-radius:8px;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#032;font-weight:700}.logo-text{font-weight:800;color:var(--accent)}.header-actions{display:flex;gap:8px;align-items:center}.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.06);padding:8px 14px;border-radius:999px;color:var(--text);cursor:pointer}.btn-theme{background:transparent;border:none;color:var(--muted);cursor:pointer}.page-body{padding:24px;overflow:auto}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:16px;align-items:start}.draggable-card{background:var(--card);padding:14px;border-radius:12px;box-shadow:0 4px 18px #02080c80;min-width:200px}.card-large{height:340px}.card-small{height:200px}.muted{color:var(--muted)}.devices-list,.alerts-list{display:flex;flex-direction:column;gap:8px}.device-row,.alert-row{display:flex;justify-content:space-between;padding:10px;border-radius:8px;background:linear-gradient(180deg,rgba(255,255,255,.01),transparent)}.alert-row.critical{border-left:4px solid #ff6b6b}.alert-row.warning{border-left:4px solid #ffd166}.alert-row.normal{border-left:4px solid #10f0c6}.acked{opacity:.5}