:root{--bg: #f8f9fa;--surface: #ffffff;--border: #e5e7eb;--text: #111827;--muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--success: #16a34a;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .04), 0 1px 2px rgba(0, 0, 0, .03)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;font-size:15px}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{margin-top:0;line-height:1.25}.app-layout{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 24px;display:flex;align-items:center;justify-content:space-between}.app-header .brand{font-weight:700;font-size:18px;color:var(--text);text-decoration:none}.app-header nav{display:flex;gap:20px;align-items:center}.app-header nav a{color:var(--muted);font-weight:500}.app-header nav a.active{color:var(--text)}.app-main{flex:1;padding:32px 24px;max-width:1100px;width:100%;margin:0 auto}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;width:100%;max-width:400px;box-shadow:var(--shadow)}.auth-card h1{margin-bottom:24px;font-size:24px}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-weight:500;font-size:14px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit;background:var(--surface)}.form-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:background-color .15s}.btn:hover:not(:disabled){background:#f3f4f6}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-danger{color:var(--danger);border-color:var(--danger)}.btn-danger:hover:not(:disabled){background:#dc26260f}.btn-small{padding:6px 10px;font-size:13px}.btn-full{width:100%;justify-content:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.card+.card{margin-top:12px}.card-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.device-card{display:flex;flex-direction:column;gap:8px;cursor:pointer;transition:border-color .15s}.device-card:hover{border-color:var(--primary)}.device-card h3{margin:0;font-size:18px}.device-card .meta{color:var(--muted);font-size:13px}.badge{display:inline-block;padding:3px 8px;border-radius:12px;font-size:12px;font-weight:500;background:#e5e7eb;color:#374151}.badge-success{background:#d1fae5;color:#065f46}.badge-muted{background:#f3f4f6;color:var(--muted)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h1{margin:0}.empty-state{text-align:center;padding:60px 24px;color:var(--muted)}.empty-state h3{color:var(--text);margin-bottom:8px}.error-message{background:#fee2e2;color:#991b1b;padding:10px 14px;border-radius:var(--radius);margin-bottom:16px;font-size:14px}.success-message{background:#d1fae5;color:#065f46;padding:10px 14px;border-radius:var(--radius);margin-bottom:16px;font-size:14px}.code-block{background:#111827;color:#f9fafb;padding:12px 16px;border-radius:var(--radius);font-family:Menlo,Monaco,Courier New,monospace;font-size:13px;word-break:break-all;overflow-x:auto}.subscription-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border)}.subscription-row:last-child{border-bottom:none}.subscription-row .info{flex:1}.subscription-row .actions{display:flex;gap:8px}.loading{text-align:center;padding:40px;color:var(--muted)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100;padding:24px}.modal{background:var(--surface);border-radius:var(--radius);padding:24px;width:100%;max-width:500px;box-shadow:0 20px 25px #0000001a}.modal h2{margin-top:0}.modal-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}