*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif;background:#f4f5f7;color:#1a1a1a}.topbar{display:flex;align-items:center;gap:24px;padding:12px 24px;background:#1c2b3a;color:#fff}.topbar nav{display:flex;gap:16px;flex:1}.topbar nav a{color:#cfd8e3;text-decoration:none}.topbar nav a.active{color:#fff;font-weight:600}.brand{font-weight:700}.user{display:flex;align-items:center;gap:12px}.account-menu{position:relative}.account-menu-trigger{background:transparent;color:#fff;border:none;cursor:pointer;font-size:.95rem;padding:4px 8px}.account-menu-dropdown{position:absolute;right:0;top:calc(100% + 4px);background:#fff;color:#1a1a1a;border-radius:6px;box-shadow:0 2px 8px #0003;display:flex;flex-direction:column;min-width:180px;overflow:hidden;z-index:10}.account-menu-dropdown a,.account-menu-dropdown button{padding:10px 14px;text-align:left;background:none;color:#1a1a1a;border-radius:0;text-decoration:none;font-size:.9rem}.account-menu-dropdown a:hover,.account-menu-dropdown button:hover{background:#f4f5f7}main{padding:24px}.cards{display:flex;gap:16px}.card{background:#fff;border-radius:8px;padding:20px 28px;box-shadow:0 1px 3px #0000001a;display:flex;flex-direction:column}.card-value{font-size:2rem;font-weight:700}.card-alert .card-value{color:#c0392b}.card-label{color:#666}table{width:100%;border-collapse:collapse;background:#fff;margin-top:16px}th,td{text-align:left;padding:8px 12px;border-bottom:1px solid #eee}.row-alert{background:#fdecea}.inline-form{display:flex;gap:8px;margin-top:12px}.inline-form input{padding:6px 10px;border:1px solid #ccc;border-radius:4px}button{padding:6px 14px;border:none;border-radius:4px;background:#2d6cdf;color:#fff;cursor:pointer}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh}.login-form{background:#fff;padding:32px;border-radius:8px;box-shadow:0 1px 3px #0000001a;display:flex;flex-direction:column;gap:12px;width:320px}.login-form h1{font-size:1.25rem;margin:0 0 8px}.login-form input{padding:8px 10px;border:1px solid #ccc;border-radius:4px}.login-error{color:#c0392b;margin:0;font-size:.9rem}.card-section{background:#fff;border-radius:8px;padding:20px 24px;box-shadow:0 1px 3px #0000001a;max-width:420px;margin-top:16px}.card-section h2{margin-top:0;font-size:1.05rem}.card-section form{display:flex;flex-direction:column;gap:10px}.card-section input{padding:8px 10px;border:1px solid #ccc;border-radius:4px}.form-success{color:#1e7e34;margin:0;font-size:.9rem}.silo-3d-section{background:#fff;border-radius:8px;padding:16px 20px 20px;box-shadow:0 1px 3px #0000001a;margin-top:16px}.silo-3d-section h2{margin-top:0;font-size:1.05rem}.silo-3d-canvas{width:100%;height:420px;border-radius:6px;overflow:hidden;background:#eef1f4}.sensor-3d-label{background:#1a1a1ad9;color:#fff;padding:2px 6px;border-radius:4px;font-size:.75rem;white-space:nowrap;pointer-events:none}.device-select{margin-bottom:8px}.device-select select{padding:6px 10px;border:1px solid #ccc;border-radius:4px}