:root{--bg: #0f1115;--panel: #181b22;--border: #272b33;--text: #e6e8eb;--muted: #9aa3af;--accent: #4f8cff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}.center{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:40px;text-align:center;max-width:360px}.login-card h1{font-size:20px;margin:0 0 4px}.muted{color:var(--muted)}.btn{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 14px;cursor:pointer;font-size:14px}.btn:hover{border-color:var(--accent)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;margin-top:16px}.topbar{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--panel)}.brand{font-weight:600}.spacer{flex:1}.user{color:var(--muted);font-size:14px}.tabs{display:flex;align-items:center;gap:8px;padding:12px 20px;border-bottom:1px solid var(--border)}.tab,.range{background:transparent;color:var(--muted);border:1px solid var(--border);border-radius:8px;padding:6px 12px;cursor:pointer;font-size:14px}.tab.active{color:#fff;background:var(--accent);border-color:var(--accent)}.range.active{color:var(--text);border-color:var(--accent)}.ranges{display:flex;gap:6px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(440px,1fr));gap:16px;padding:20px}.widget-card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:8px;min-height:180px;display:flex;align-items:center;justify-content:center}.widget-img{width:100%;height:auto;border-radius:6px;display:block}.widget-loading{color:var(--muted);font-size:14px}.widget-error{color:#ff6b6b;font-size:13px;padding:12px}.error-banner{margin:16px 20px 0;padding:10px 14px;background:#3a1d1d;border:1px solid #5c2a2a;border-radius:8px;color:#ffb4b4;font-size:14px}